I kēia manawa, ua lilo ka REST API i mea maʻamau no ka hoʻomohala ʻana i nā noi pūnaewele, e ʻae ana i ka hoʻomohala ʻana e māhele ʻia i nā ʻāpana kūʻokoʻa. Hoʻohana ʻia nā ʻano hana like ʻole e like me Angular, React, Vue a me nā mea ʻē aʻe no UI. Hiki i nā mea hoʻomohala backend ke koho mai nā ʻano ʻōlelo like ʻole a me nā frameworks. I kēia lā, makemake wau e kamaʻilio e pili ana i kahi hoʻolālā e like me ʻO NestJS. Aia mākou i loko TestMace Hoʻohana ikaika mākou no nā papahana kūloko. Ke hoʻohana nei i ka pūnana a me ka pūʻolo @nestjsx/crud, e hana mākou i kahi noi CRUD maʻalahi.

No ke aha ʻo NestJS

I kēia mau lā, ua ʻike ʻia ka nui o nā backend frameworks i ke kaiāulu JavaScript. A inā ma ke ʻano o ka hana e hāʻawi lākou i nā mana like me Nest, a laila ma ka mea hoʻokahi e lanakila maoli - ʻo ia ka hale hoʻolālā. ʻO nā hiʻohiʻona NestJS aʻe e ʻae iā ʻoe e hana i nā noi ʻoihana a me ka hoʻomohala ʻana i nā kime nui:

e hoʻohana ana i TypeScript ma ke ʻano he ʻōlelo hoʻomohala nui. ʻOiai ke kākoʻo nei ʻo NestJS i ka JavaScript, ʻaʻole hiki ke hana kekahi mau hana, ʻoiai inā mākou e kamaʻilio e pili ana i nā pūʻolo ʻaoʻao ʻekolu;
ka hele ʻana o kahi pahu DI, kahi e hiki ai iā ʻoe ke hana i nā mea i hoʻopili ʻia;
Hoʻokaʻawale ʻia ka hana o ka framework i nā mea hoʻololi kūʻokoʻa. No ka laʻana, ma lalo o ka puʻupuʻu e like me ka hoʻolālā hiki ke hoʻohana ʻia e like me ka hoike, a hookeai, e hana me ka waihona, pūnana ma waho o ka pahu hāʻawi nakinaki i typeorm, mongoose, hoʻokuʻu;
He kahua agnostic ʻo NestJS a kākoʻo iā REST, GraphQL, Websockets, gRPC, etc.

Hoʻoulu ʻia ka framework e ka Angular frontend framework a me ka manaʻo he nui nā mea like me ia.

Ke hoʻokomo nei i ka NestJS a me ka hoʻolālā ʻana i ka papahana

Loaʻa i ka pūnana kahi pūʻolo pūnana/cli, ka mea e hiki ai iā ʻoe ke hoʻonohonoho koke i kahi ʻōnaehana noi kumu. E hoʻokomo i kēia pūʻolo ma ka honua holoʻokoʻa:

npm install --global @nest/cli

Ma hope o ka hoʻokomo ʻana, e hoʻopuka mākou i ke kumu kumu o kā mākou noi me ka inoa nest-rest. Hana ʻia kēia me ke kauoha nest new nest-rest.

pūnana hou-hoʻomaha

dmitrii@dmitrii-HP-ZBook-17-G3:~/projects $ nest new nest-rest
  We will scaffold your app in a few seconds..

CREATE /nest-rest/.prettierrc (51 bytes)
CREATE /nest-rest/README.md (3370 bytes)
CREATE /nest-rest/nest-cli.json (84 bytes)
CREATE /nest-rest/nodemon-debug.json (163 bytes)
CREATE /nest-rest/nodemon.json (67 bytes)
CREATE /nest-rest/package.json (1805 bytes)
CREATE /nest-rest/tsconfig.build.json (97 bytes)
CREATE /nest-rest/tsconfig.json (325 bytes)
CREATE /nest-rest/tslint.json (426 bytes)
CREATE /nest-rest/src/app.controller.spec.ts (617 bytes)
CREATE /nest-rest/src/app.controller.ts (274 bytes)
CREATE /nest-rest/src/app.module.ts (249 bytes)
CREATE /nest-rest/src/app.service.ts (142 bytes)
CREATE /nest-rest/src/main.ts (208 bytes)
CREATE /nest-rest/test/app.e2e-spec.ts (561 bytes)
CREATE /nest-rest/test/jest-e2e.json (183 bytes)

? Which package manager would you ️ to use? yarn
 Installation in progress... 

  Successfully created project nest-rest
  Get started with the following commands:

$ cd nest-rest
$ yarn run start

                          Thanks for installing Nest 
                 Please consider donating to our open collective
                        to help us maintain this package.

                 Donate: https://opencollective.com/nest

E koho mākou i ka yarn ma ke ʻano he mea hoʻokele pūʻolo.
I kēia manawa hiki iā ʻoe ke hoʻomaka i ke kikowaena me ke kauoha npm start a hele i ka helu wahi http://localhost:3000 hiki iā ʻoe ke ʻike i ka ʻaoʻao nui. Eia naʻe, ʻaʻole kēia ke kumu i ʻākoakoa ai mākou a ke neʻe nei mākou.

Hoʻonohonoho i ka hana me ka waihona

Ua koho au iā PostrgreSQL e like me ka DBMS no kēia ʻatikala. ʻAʻohe hoʻopaʻapaʻa e pili ana i nā ʻono; i koʻu manaʻo, ʻo ia ka DBMS oʻo loa, loaʻa nā mana kūpono. E like me ka mea i haʻi mua ʻia, hāʻawi ʻo Nest i ka hoʻohui ʻana me nā pūʻolo like ʻole e hana me nā ʻikepili. No ka mea No ka hāʻule ʻana o kaʻu koho ma PostgreSQL, kūpono ke koho ʻana iā TypeORM ma kahi ORM. E hoʻokomo i nā pūʻolo pono no ka hoʻohui ʻana me ka waihona:

yarn add typeorm @nestjs/typeorm pg

No ka hoʻonohonoho, he aha kēlā me kēia pūʻolo e pono ai:

typeorm - he pūʻolo pololei mai ka ORM ponoʻī;
@nestjs/typeorm - TypeORM pūʻolo no NestJS. Hoʻohui i nā modula no ka hoʻokomo ʻana i nā modula papahana, a me kahi hoʻonohonoho o nā mea hoʻonaninani kōkua;
pg - mea hoʻokele no ka hana pū me PostgreSQL.

ʻAe, ua hoʻokomo ʻia nā pūʻolo, pono ʻoe e hoʻomaka i ka waihona ponoʻī. No ka waiho ʻana i ka waihona, e hoʻohana wau i ka docker-compose.yml me kēia ʻike:

docker-compose.yml

version: '3.1'

services:
  db:
    image: postgres:11.2
    restart: always
    environment:
      POSTGRES_PASSWORD: example
    volumes:
      - ../db:/var/lib/postgresql/data
      - ./postgresql.conf:/etc/postgresql/postgresql.conf
    ports:
      - 5432:5432
  adminer:
    image: adminer
    restart: always
    ports:
      - 8080:8080

E like me kāu e ʻike ai, hoʻonohonoho kēia faila i ka hoʻomaka ʻana o nā ipu 2:

ʻO db kahi pahu i loaʻa pololei ka waihona. I kā mākou hihia, hoʻohana ʻia ka postgresql version 11.2;
luna hoʻomalu—manakia waihona. Hāʻawi i kahi kikowaena pūnaewele no ka nānā ʻana a me ka mālama ʻana i ka waihona.

No ka hana ʻana me nā pilina tcp, ua hoʻohui au i kēia config.

postgresql.conf

# -----------------------------
# PostgreSQL configuration file
# -----------------------------
#
# This file consists of lines of the form:
#
#   name = value
#
# (The "=" is optional.)  Whitespace may be used.  Comments are introduced with
# "#" anywhere on a line.  The complete list of parameter names and allowed
# values can be found in the PostgreSQL documentation.
#
# The commented-out settings shown in this file represent the default values.
# Re-commenting a setting is NOT sufficient to revert it to the default value;
# you need to reload the server.
#
# This file is read on server startup and when the server receives a SIGHUP
# signal.  If you edit the file on a running system, you have to SIGHUP the
# server for the changes to take effect, run "pg_ctl reload", or execute
# "SELECT pg_reload_conf()".  Some parameters, which are marked below,
# require a server shutdown and restart to take effect.
#
# Any parameter can also be given as a command-line option to the server, e.g.,
# "postgres -c log_connections=on".  Some parameters can be changed at run time
# with the "SET" SQL command.
#
# Memory units:  kB = kilobytes        Time units:  ms  = milliseconds
#                MB = megabytes                     s   = seconds
#                GB = gigabytes                     min = minutes
#                TB = terabytes                     h   = hours
#                                                   d   = days
#------------------------------------------------------------------------------
# FILE LOCATIONS
#------------------------------------------------------------------------------
# The default values of these variables are driven from the -D command-line
# option or PGDATA environment variable, represented here as ConfigDir.
#data_directory = 'ConfigDir'       # use data in another directory
# (change requires restart)
#hba_file = 'ConfigDir/pg_hba.conf' # host-based authentication file
# (change requires restart)
#ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file
# (change requires restart)
# If external_pid_file is not explicitly set, no extra PID file is written.
#external_pid_file = ''         # write an extra PID file
# (change requires restart)
#------------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION
#------------------------------------------------------------------------------
# - Connection Settings -
listen_addresses = '*'
#listen_addresses = 'localhost'     # what IP address(es) to listen on;
# comma-separated list of addresses;
# defaults to 'localhost'; use '*' for all
# (change requires restart)
#port = 5432                # (change requires restart)
#max_connections = 100          # (change requires restart)
#superuser_reserved_connections = 3 # (change requires restart)
#unix_socket_directories = '/tmp'   # comma-separated list of directories
# (change requires restart)
#unix_socket_group = ''         # (change requires restart)
#unix_socket_permissions = 0777     # begin with 0 to use octal notation
# (change requires restart)
#bonjour = off              # advertise server via Bonjour
# (change requires restart)
#bonjour_name = ''          # defaults to the computer name
# (change requires restart)
# - TCP Keepalives -
# see "man 7 tcp" for details
#tcp_keepalives_idle = 0        # TCP_KEEPIDLE, in seconds;
# 0 selects the system default
#tcp_keepalives_interval = 0        # TCP_KEEPINTVL, in seconds;
# 0 selects the system default
#tcp_keepalives_count = 0       # TCP_KEEPCNT;
# 0 selects the system default
# - Authentication -
#authentication_timeout = 1min      # 1s-600s
#password_encryption = md5      # md5 or scram-sha-256
#db_user_namespace = off
# GSSAPI using Kerberos
#krb_server_keyfile = ''
#krb_caseins_users = off
# - SSL -
#ssl = off
#ssl_ca_file = ''
#ssl_cert_file = 'server.crt'
#ssl_crl_file = ''
#ssl_key_file = 'server.key'
#ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
#ssl_prefer_server_ciphers = on
#ssl_ecdh_curve = 'prime256v1'
#ssl_min_protocol_version = 'TLSv1'
#ssl_max_protocol_version = ''
#ssl_dh_params_file = ''
#ssl_passphrase_command = ''
#ssl_passphrase_command_supports_reload = off
#------------------------------------------------------------------------------
# RESOURCE USAGE (except WAL)
#------------------------------------------------------------------------------
# - Memory -
#shared_buffers = 32MB          # min 128kB
# (change requires restart)
#huge_pages = try           # on, off, or try
# (change requires restart)
#temp_buffers = 8MB         # min 800kB
#max_prepared_transactions = 0      # zero disables the feature
# (change requires restart)
# Caution: it is not advisable to set max_prepared_transactions nonzero unless
# you actively intend to use prepared transactions.
#work_mem = 4MB             # min 64kB
#maintenance_work_mem = 64MB        # min 1MB
#autovacuum_work_mem = -1       # min 1MB, or -1 to use maintenance_work_mem
#max_stack_depth = 2MB          # min 100kB
#shared_memory_type = mmap      # the default is the first option
# supported by the operating system:
#   mmap
#   sysv
#   windows
# (change requires restart)
#dynamic_shared_memory_type = posix # the default is the first option
# supported by the operating system:
#   posix
#   sysv
#   windows
#   mmap
# (change requires restart)
# - Disk -
#temp_file_limit = -1           # limits per-process temp file space
# in kB, or -1 for no limit
# - Kernel Resources -
#max_files_per_process = 1000       # min 25
# (change requires restart)
# - Cost-Based Vacuum Delay -
#vacuum_cost_delay = 0          # 0-100 milliseconds (0 disables)
#vacuum_cost_page_hit = 1       # 0-10000 credits
#vacuum_cost_page_miss = 10     # 0-10000 credits
#vacuum_cost_page_dirty = 20        # 0-10000 credits
#vacuum_cost_limit = 200        # 1-10000 credits
# - Background Writer -
#bgwriter_delay = 200ms         # 10-10000ms between rounds
#bgwriter_lru_maxpages = 100        # max buffers written/round, 0 disables
#bgwriter_lru_multiplier = 2.0      # 0-10.0 multiplier on buffers scanned/round
#bgwriter_flush_after = 0       # measured in pages, 0 disables
# - Asynchronous Behavior -
#effective_io_concurrency = 1       # 1-1000; 0 disables prefetching
#max_worker_processes = 8       # (change requires restart)
#max_parallel_maintenance_workers = 2   # taken from max_parallel_workers
#max_parallel_workers_per_gather = 2    # taken from max_parallel_workers
#parallel_leader_participation = on
#max_parallel_workers = 8       # maximum number of max_worker_processes that
# can be used in parallel operations
#old_snapshot_threshold = -1        # 1min-60d; -1 disables; 0 is immediate
# (change requires restart)
#backend_flush_after = 0        # measured in pages, 0 disables
#------------------------------------------------------------------------------
# WRITE-AHEAD LOG
#------------------------------------------------------------------------------
# - Settings -
#wal_level = replica            # minimal, replica, or logical
# (change requires restart)
#fsync = on             # flush data to disk for crash safety
# (turning this off can cause
# unrecoverable data corruption)
#synchronous_commit = on        # synchronization level;
# off, local, remote_write, remote_apply, or on
#wal_sync_method = fsync        # the default is the first option
# supported by the operating system:
#   open_datasync
#   fdatasync (default on Linux)
#   fsync
#   fsync_writethrough
#   open_sync
#full_page_writes = on          # recover from partial page writes
#wal_compression = off          # enable compression of full-page writes
#wal_log_hints = off            # also do full page writes of non-critical updates
# (change requires restart)
#wal_buffers = -1           # min 32kB, -1 sets based on shared_buffers
# (change requires restart)
#wal_writer_delay = 200ms       # 1-10000 milliseconds
#wal_writer_flush_after = 1MB       # measured in pages, 0 disables
#commit_delay = 0           # range 0-100000, in microseconds
#commit_siblings = 5            # range 1-1000
# - Checkpoints -
#checkpoint_timeout = 5min      # range 30s-1d
#max_wal_size = 1GB
#min_wal_size = 80MB
#checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0
#checkpoint_flush_after = 0     # measured in pages, 0 disables
#checkpoint_warning = 30s       # 0 disables
# - Archiving -
#archive_mode = off     # enables archiving; off, on, or always
# (change requires restart)
#archive_command = ''       # command to use to archive a logfile segment
# placeholders: %p = path of file to archive
#               %f = file name only
# e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
#archive_timeout = 0        # force a logfile segment switch after this
# number of seconds; 0 disables
# - Archive Recovery -
# These are only used in recovery mode.
#restore_command = ''       # command to use to restore an archived logfile segment
# placeholders: %p = path of file to restore
#               %f = file name only
# e.g. 'cp /mnt/server/archivedir/%f %p'
# (change requires restart)
#archive_cleanup_command = ''   # command to execute at every restartpoint
#recovery_end_command = ''  # command to execute at completion of recovery
# - Recovery Target -
# Set these only when performing a targeted recovery.
#recovery_target = ''       # 'immediate' to end recovery as soon as a
# consistent state is reached
# (change requires restart)
#recovery_target_name = ''  # the named restore point to which recovery will proceed
# (change requires restart)
#recovery_target_time = ''  # the time stamp up to which recovery will proceed
# (change requires restart)
#recovery_target_xid = ''   # the transaction ID up to which recovery will proceed
# (change requires restart)
#recovery_target_lsn = ''   # the WAL LSN up to which recovery will proceed
# (change requires restart)
#recovery_target_inclusive = on # Specifies whether to stop:
# just after the specified recovery target (on)
# just before the recovery target (off)
# (change requires restart)
#recovery_target_timeline = 'latest'    # 'current', 'latest', or timeline ID
# (change requires restart)
#recovery_target_action = 'pause'   # 'pause', 'promote', 'shutdown'
# (change requires restart)
#------------------------------------------------------------------------------
# REPLICATION
#------------------------------------------------------------------------------
# - Sending Servers -
# Set these on the master and on any standby that will send replication data.
#max_wal_senders = 10       # max number of walsender processes
# (change requires restart)
#wal_keep_segments = 0      # in logfile segments; 0 disables
#wal_sender_timeout = 60s   # in milliseconds; 0 disables
#max_replication_slots = 10 # max number of replication slots
# (change requires restart)
#track_commit_timestamp = off   # collect timestamp of transaction commit
# (change requires restart)
# - Master Server -
# These settings are ignored on a standby server.
#synchronous_standby_names = '' # standby servers that provide sync rep
# method to choose sync standbys, number of sync standbys,
# and comma-separated list of application_name
# from standby(s); '*' = all
#vacuum_defer_cleanup_age = 0   # number of xacts by which cleanup is delayed
# - Standby Servers -
# These settings are ignored on a master server.
#primary_conninfo = ''          # connection string to sending server
# (change requires restart)
#primary_slot_name = ''         # replication slot on sending server
# (change requires restart)
#promote_trigger_file = ''      # file name whose presence ends recovery
#hot_standby = on           # "off" disallows queries during recovery
# (change requires restart)
#max_standby_archive_delay = 30s    # max delay before canceling queries
# when reading WAL from archive;
# -1 allows indefinite delay
#max_standby_streaming_delay = 30s  # max delay before canceling queries
# when reading streaming WAL;
# -1 allows indefinite delay
#wal_receiver_status_interval = 10s # send replies at least this often
# 0 disables
#hot_standby_feedback = off     # send info from standby to prevent
# query conflicts
#wal_receiver_timeout = 60s     # time that receiver waits for
# communication from master
# in milliseconds; 0 disables
#wal_retrieve_retry_interval = 5s   # time to wait before retrying to
# retrieve WAL after a failed attempt
#recovery_min_apply_delay = 0       # minimum delay for applying changes during recovery
# - Subscribers -
# These settings are ignored on a publisher.
#max_logical_replication_workers = 4    # taken from max_worker_processes
# (change requires restart)
#max_sync_workers_per_subscription = 2  # taken from max_logical_replication_workers
#------------------------------------------------------------------------------
# QUERY TUNING
#------------------------------------------------------------------------------
# - Planner Method Configuration -
#enable_bitmapscan = on
#enable_hashagg = on
#enable_hashjoin = on
#enable_indexscan = on
#enable_indexonlyscan = on
#enable_material = on
#enable_mergejoin = on
#enable_nestloop = on
#enable_parallel_append = on
#enable_seqscan = on
#enable_sort = on
#enable_tidscan = on
#enable_partitionwise_join = off
#enable_partitionwise_aggregate = off
#enable_parallel_hash = on
#enable_partition_pruning = on
# - Planner Cost Constants -
#seq_page_cost = 1.0            # measured on an arbitrary scale
#random_page_cost = 4.0         # same scale as above
#cpu_tuple_cost = 0.01          # same scale as above
#cpu_index_tuple_cost = 0.005       # same scale as above
#cpu_operator_cost = 0.0025     # same scale as above
#parallel_tuple_cost = 0.1      # same scale as above
#parallel_setup_cost = 1000.0   # same scale as above
#jit_above_cost = 100000        # perform JIT compilation if available
# and query more expensive than this;
# -1 disables
#jit_inline_above_cost = 500000     # inline small functions if query is
# more expensive than this; -1 disables
#jit_optimize_above_cost = 500000   # use expensive JIT optimizations if
# query is more expensive than this;
# -1 disables
#min_parallel_table_scan_size = 8MB
#min_parallel_index_scan_size = 512kB
#effective_cache_size = 4GB
# - Genetic Query Optimizer -
#geqo = on
#geqo_threshold = 12
#geqo_effort = 5            # range 1-10
#geqo_pool_size = 0         # selects default based on effort
#geqo_generations = 0           # selects default based on effort
#geqo_selection_bias = 2.0      # range 1.5-2.0
#geqo_seed = 0.0            # range 0.0-1.0
# - Other Planner Options -
#default_statistics_target = 100    # range 1-10000
#constraint_exclusion = partition   # on, off, or partition
#cursor_tuple_fraction = 0.1        # range 0.0-1.0
#from_collapse_limit = 8
#join_collapse_limit = 8        # 1 disables collapsing of explicit
# JOIN clauses
#force_parallel_mode = off
#jit = on               # allow JIT compilation
#plan_cache_mode = auto         # auto, force_generic_plan or
# force_custom_plan
#------------------------------------------------------------------------------
# REPORTING AND LOGGING
#------------------------------------------------------------------------------
# - Where to Log -
#log_destination = 'stderr'     # Valid values are combinations of
# stderr, csvlog, syslog, and eventlog,
# depending on platform.  csvlog
# requires logging_collector to be on.
# This is used when logging to stderr:
#logging_collector = off        # Enable capturing of stderr and csvlog
# into log files. Required to be on for
# csvlogs.
# (change requires restart)
# These are only used if logging_collector is on:
#log_directory = 'log'          # directory where log files are written,
# can be absolute or relative to PGDATA
#log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'    # log file name pattern,
# can include strftime() escapes
#log_file_mode = 0600           # creation mode for log files,
# begin with 0 to use octal notation
#log_truncate_on_rotation = off     # If on, an existing log file with the
# same name as the new log file will be
# truncated rather than appended to.
# But such truncation only occurs on
# time-driven rotation, not on restarts
# or size-driven rotation.  Default is
# off, meaning append to existing files
# in all cases.
#log_rotation_age = 1d          # Automatic rotation of logfiles will
# happen after that time.  0 disables.
#log_rotation_size = 10MB       # Automatic rotation of logfiles will
# happen after that much log output.
# 0 disables.
# These are relevant when logging to syslog:
#syslog_facility = 'LOCAL0'
#syslog_ident = 'postgres'
#syslog_sequence_numbers = on
#syslog_split_messages = on
# This is only relevant when logging to eventlog (win32):
# (change requires restart)
#event_source = 'PostgreSQL'
# - When to Log -
#log_min_messages = warning     # values in order of decreasing detail:
#   debug5
#   debug4
#   debug3
#   debug2
#   debug1
#   info
#   notice
#   warning
#   error
#   log
#   fatal
#   panic
#log_min_error_statement = error    # values in order of decreasing detail:
#   debug5
#   debug4
#   debug3
#   debug2
#   debug1
#   info
#   notice
#   warning
#   error
#   log
#   fatal
#   panic (effectively off)
#log_min_duration_statement = -1    # logs statements and their durations
# according to log_statement_sample_rate. -1 is disabled,
# 0 logs all statement, > 0 logs only statements running at
# least this number of milliseconds.
#log_statement_sample_rate = 1  # Fraction of logged statements over
# log_min_duration_statement. 1.0 logs all statements,
# 0 never logs.
# - What to Log -
#debug_print_parse = off
#debug_print_rewritten = off
#debug_print_plan = off
#debug_pretty_print = on
#log_checkpoints = off
#log_connections = off
#log_disconnections = off
#log_duration = off
#log_error_verbosity = default      # terse, default, or verbose messages
#log_hostname = off
#log_line_prefix = '%m [%p] '       # special values:
#   %a = application name
#   %u = user name
#   %d = database name
#   %r = remote host and port
#   %h = remote host
#   %p = process ID
#   %t = timestamp without milliseconds
#   %m = timestamp with milliseconds
#   %n = timestamp with milliseconds (as a Unix epoch)
#   %i = command tag
#   %e = SQL state
#   %c = session ID
#   %l = session line number
#   %s = session start timestamp
#   %v = virtual transaction ID
#   %x = transaction ID (0 if none)
#   %q = stop here in non-session
#        processes
#   %% = '%'
# e.g. '<%u%%%d> '
#log_lock_waits = off           # log lock waits >= deadlock_timeout
#log_statement = 'none'         # none, ddl, mod, all
#log_replication_commands = off
#log_temp_files = -1            # log temporary files equal or larger
# than the specified size in kilobytes;
# -1 disables, 0 logs all temp files
#log_timezone = 'GMT'
#------------------------------------------------------------------------------
# PROCESS TITLE
#------------------------------------------------------------------------------
#cluster_name = ''          # added to process titles if nonempty
# (change requires restart)
#update_process_title = on
#------------------------------------------------------------------------------
# STATISTICS
#------------------------------------------------------------------------------
# - Query and Index Statistics Collector -
#track_activities = on
#track_counts = on
#track_io_timing = off
#track_functions = none         # none, pl, all
#track_activity_query_size = 1024   # (change requires restart)
#stats_temp_directory = 'pg_stat_tmp'
# - Monitoring -
#log_parser_stats = off
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off
#------------------------------------------------------------------------------
# AUTOVACUUM
#------------------------------------------------------------------------------
#autovacuum = on            # Enable autovacuum subprocess?  'on'
# requires track_counts to also be on.
#log_autovacuum_min_duration = -1   # -1 disables, 0 logs all actions and
# their durations, > 0 logs only
# actions running at least this number
# of milliseconds.
#autovacuum_max_workers = 3     # max number of autovacuum subprocesses
# (change requires restart)
#autovacuum_naptime = 1min      # time between autovacuum runs
#autovacuum_vacuum_threshold = 50   # min number of row updates before
# vacuum
#autovacuum_analyze_threshold = 50  # min number of row updates before
# analyze
#autovacuum_vacuum_scale_factor = 0.2   # fraction of table size before vacuum
#autovacuum_analyze_scale_factor = 0.1  # fraction of table size before analyze
#autovacuum_freeze_max_age = 200000000  # maximum XID age before forced vacuum
# (change requires restart)
#autovacuum_multixact_freeze_max_age = 400000000    # maximum multixact age
# before forced vacuum
# (change requires restart)
#autovacuum_vacuum_cost_delay = 2ms # default vacuum cost delay for
# autovacuum, in milliseconds;
# -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1  # default vacuum cost limit for
# autovacuum, -1 means use
# vacuum_cost_limit
#------------------------------------------------------------------------------
# CLIENT CONNECTION DEFAULTS
#------------------------------------------------------------------------------
# - Statement Behavior -
#client_min_messages = notice       # values in order of decreasing detail:
#   debug5
#   debug4
#   debug3
#   debug2
#   debug1
#   log
#   notice
#   warning
#   error
#search_path = '"$user", public'    # schema names
#row_security = on
#default_tablespace = ''        # a tablespace name, '' uses the default
#temp_tablespaces = ''          # a list of tablespace names, '' uses
# only default tablespace
#check_function_bodies = on
#default_transaction_isolation = 'read committed'
#default_transaction_read_only = off
#default_transaction_deferrable = off
#session_replication_role = 'origin'
#statement_timeout = 0          # in milliseconds, 0 is disabled
#lock_timeout = 0           # in milliseconds, 0 is disabled
#idle_in_transaction_session_timeout = 0    # in milliseconds, 0 is disabled
#vacuum_freeze_min_age = 50000000
#vacuum_freeze_table_age = 150000000
#vacuum_multixact_freeze_min_age = 5000000
#vacuum_multixact_freeze_table_age = 150000000
#vacuum_cleanup_index_scale_factor = 0.1    # fraction of total number of tuples
# before index cleanup, 0 always performs
# index cleanup
#bytea_output = 'hex'           # hex, escape
#xmlbinary = 'base64'
#xmloption = 'content'
#gin_fuzzy_search_limit = 0
#gin_pending_list_limit = 4MB
# - Locale and Formatting -
#datestyle = 'iso, mdy'
#intervalstyle = 'postgres'
#timezone = 'GMT'
#timezone_abbreviations = 'Default'     # Select the set of available time zone
# abbreviations.  Currently, there are
#   Default
#   Australia (historical usage)
#   India
# You can create your own file in
# share/timezonesets/.
#extra_float_digits = 1         # min -15, max 3; any value >0 actually
# selects precise output mode
#client_encoding = sql_ascii        # actually, defaults to database
# encoding
# These settings are initialized by initdb, but they can be changed.
#lc_messages = 'C'          # locale for system error message
# strings
#lc_monetary = 'C'          # locale for monetary formatting
#lc_numeric = 'C'           # locale for number formatting
#lc_time = 'C'              # locale for time formatting
# default configuration for text search
#default_text_search_config = 'pg_catalog.simple'
# - Shared Library Preloading -
#shared_preload_libraries = ''  # (change requires restart)
#local_preload_libraries = ''
#session_preload_libraries = ''
#jit_provider = 'llvmjit'       # JIT library to use
# - Other Defaults -
#dynamic_library_path = '$libdir'
#------------------------------------------------------------------------------
# LOCK MANAGEMENT
#------------------------------------------------------------------------------
#deadlock_timeout = 1s
#max_locks_per_transaction = 64     # min 10
# (change requires restart)
#max_pred_locks_per_transaction = 64    # min 10
# (change requires restart)
#max_pred_locks_per_relation = -2   # negative values mean
# (max_pred_locks_per_transaction
#  / -max_pred_locks_per_relation) - 1
#max_pred_locks_per_page = 2            # min 0
#------------------------------------------------------------------------------
# VERSION AND PLATFORM COMPATIBILITY
#------------------------------------------------------------------------------
# - Previous PostgreSQL Versions -
#array_nulls = on
#backslash_quote = safe_encoding    # on, off, or safe_encoding
#escape_string_warning = on
#lo_compat_privileges = off
#operator_precedence_warning = off
#quote_all_identifiers = off
#standard_conforming_strings = on
#synchronize_seqscans = on
# - Other Platforms and Clients -
#transform_null_equals = off
#------------------------------------------------------------------------------
# ERROR HANDLING
#------------------------------------------------------------------------------
#exit_on_error = off            # terminate session on any error?
#restart_after_crash = on       # reinitialize after backend crash?
#data_sync_retry = off          # retry or panic on failure to fsync
# data?
# (change requires restart)
#------------------------------------------------------------------------------
# CONFIG FILE INCLUDES
#------------------------------------------------------------------------------
# These options allow settings to be loaded from files other than the
# default postgresql.conf.
#include_dir = 'conf.d'         # include files ending in '.conf' from
# directory 'conf.d'
#include_if_exists = 'exists.conf'  # include file only if it exists
#include = 'special.conf'       # include file
#------------------------------------------------------------------------------
# CUSTOMIZED OPTIONS
#------------------------------------------------------------------------------
# Add settings for extensions here

ʻO ia wale nō, hiki iā ʻoe ke hoʻomaka i nā ipu me ke kauoha docker-compose up -d. A i ʻole ma kahi console kaʻawale me ke kauoha docker-compose up.

No laila, ua hoʻokomo ʻia nā pūʻolo, ua hoʻokuʻu ʻia ka waihona, ʻo ke koena wale nō e hoʻolauna iā lākou me kekahi. No ka hana ʻana i kēia, pono ʻoe e hoʻohui i kēia faila i ke kumu o ka papahana: ormconfig.js:

ormconfig.js

const process = require('process');
const username = process.env.POSTGRES_USER || "postgres";
const password = process.env.POSTGRES_PASSWORD || "example";
module.exports = {
"type": "postgres",
"host": "localhost",
"port": 5432,
username,
password,
"database": "postgres",
"synchronize": true,
"dropSchema": false,
"logging": true,
"entities": [__dirname + "/src/**/*.entity.ts", __dirname + "/dist/**/*.entity.js"],
"migrations": ["migrations/**/*.ts"],
"subscribers": ["subscriber/**/*.ts", "dist/subscriber/**/.js"],
"cli": {
"entitiesDir": "src",
"migrationsDir": "migrations",
"subscribersDir": "subscriber"
}
}

E hoʻohana ʻia kēia hoʻonohonoho no ka cli typeorm.

E nānā hou aku kākou i kēia hoʻonohonoho. Ma nā laina 3 a me 4 loaʻa iā mākou ka inoa inoa a me ka ʻōlelo huna mai nā ʻano hoʻololi kaiapuni. He mea maʻalahi kēia inā loaʻa iā ʻoe kekahi mau kaiapuni (dev, stage, prod, etc.). Ma ka maʻamau, ʻo ka inoa inoa postgres a ʻo ka ʻōlelo huna he laʻana. He mea liʻiliʻi ke koena o ka config, no laila e nānā wale mākou i nā ʻāpana hoihoi loa:

synchronize - Hōʻike i ka hana ʻokoʻa ʻana o ka schema database ke hoʻomaka ka noi. E makaʻala i kēia koho a mai hoʻohana iā ia i ka hana ʻana, i ʻole e nalowale ʻoe i ka ʻikepili. He kūpono kēia koho i ka hoʻomohala ʻana a me ka hoʻopau ʻana i kahi noi. Ma keʻano he koho i kēia koho, hiki iāʻoe ke hoʻohana i ke kauoha schema:sync mai CLI TypeORM.
dropSchema - hoʻonohonoho hou i ka schema i kēlā me kēia manawa i hoʻokumu ʻia kahi pilina. E like me ka mea ma mua, pono e hoʻohana ʻia kēia koho i ka wā o ka hoʻomohala ʻana a me ka debugging o ka noi.
nā hui - nā ala e nānā ai i nā wehewehe o nā kumu hoʻohālike. E ʻoluʻolu e kākoʻo ʻia ka huli ʻana ma ka mask.
ʻO cli.entitiesDir ka papa kuhikuhi kahi e mālama ʻia ai nā hiʻohiʻona mai ka TypeORM CLI ma ke ʻano paʻamau.

I mea e hiki ai iā mākou ke hoʻohana i nā hiʻohiʻona āpau o TypeORM i kā mākou noi Nest, pono mākou e hoʻokomo i ka module TypeOrmModule в AppModule. ʻO kēlā mau. kou AppModule e like me kēia:

app.module.ts

import { Module } from '@nestjs/common';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { TypeOrmModule } from '@nestjs/typeorm';
import * as process from "process";
const username = process.env.POSTGRES_USER || 'postgres';
const password = process.env.POSTGRES_PASSWORD || 'example';
@Module({
imports: [
TypeOrmModule.forRoot({
type: 'postgres',
host: 'localhost',
port: 5432,
username,
password,
database: 'postgres',
entities: [__dirname + '/**/*.entity{.ts,.js}'],
synchronize: true,
}),
],
controllers: [AppController],
providers: [AppService],
})
export class AppModule {}

E like me kāu i ʻike ai, ʻo ke ʻano forRoot ua hoʻoili ʻia ka hoʻonohonoho like no ka hana ʻana me ka waihona e like me ka faila ormconfig.ts

Hoʻomau ka paʻi hope - hoʻohui i kekahi mau hana no ka hana ʻana me TypeORM ma package.json. ʻO ka mea ʻoiaʻiʻo, ua kākau ʻia ka CLI ma javascript a holo i ka nodejs environment. Eia naʻe, e kākau ʻia kā mākou mau hiʻohiʻona a me ka neʻe ʻana i ka typescript. No laila, pono e unuhi i kā mākou neʻe a me nā hiʻohiʻona ma mua o ka hoʻohana ʻana i ka CLI. No kēia pono mākou i ka pūʻolo ts-node:

yarn add -D ts-node

Ma hope o kēlā, hoʻohui i nā kauoha pono i package.json:

"typeorm": "ts-node -r tsconfig-paths/register ./node_modules/typeorm/cli.js",
"migration:generate": "yarn run typeorm migration:generate -n",
"migration:create": "yarn run typeorm migration:create -n",
"migration:run": "yarn run typeorm migration:run"

ʻO ke kauoha mua, typeorm, hoʻohui i kahi ts-node wrapper e holo i ka TypeORM cli. ʻO nā kauoha i koe he mau pōkole kūpono e hoʻohana ai ʻoe, ma ke ʻano he mea hoʻomohala, kokoke i kēlā me kēia lā:
migration:generate - ka hana ʻana i nā neʻe e pili ana i nā loli i kāu mau hiʻohiʻona.
migration:create - ka hana ʻana i kahi neʻe ʻole.
migration:run - ka hoʻokuʻu ʻana i nā neʻe.
ʻAe, ʻo ia i kēia manawa, ua hoʻohui mākou i nā pūʻolo e pono ai, hoʻonohonoho i ka noi e hana me ka ʻikepili mai ka cli a mai ka noi ponoʻī, a hoʻomaka pū i ka DBMS. ʻO ka manawa kēia e hoʻohui i ka loiloi i kā mākou noi.

Ke hoʻouka nei i nā pūʻolo no ka hana ʻana iā CRUD

Me ka hoʻohana wale ʻana iā Nest, hiki iā ʻoe ke hana i kahi API e hiki ai iā ʻoe ke hana, heluhelu, hoʻohou, a holoi i kahi hui. E maʻalahi kēia hoʻonā e like me ka hiki, akā i kekahi mau manawa e hoʻonui ʻia. No ka laʻana, inā pono ʻoe e hana wikiwiki i kahi prototype, hiki iā ʻoe ke kaumaha pinepine i ka maʻalahi no ka wikiwiki o ka hoʻomohala ʻana. Hāʻawi ka nui o nā frameworks i ka hana no ka hana ʻana i ka CRUD ma ka wehewehe ʻana i ke kumu hoʻohālike ʻikepili o kekahi hui. A ʻaʻole ʻokoʻa ʻo Nest! Hāʻawi ʻia kēia hana e ka pūʻolo @nestjsx/crud. He mea hoihoi loa kona mau mana:

maʻalahi ka hoʻokomo a me ka hoʻonohonoho;
DBMS kūʻokoʻa;
ʻōlelo noiʻi ikaika me ka hiki ke kānana, hoʻokaʻawale ʻaoʻao, ʻano, hoʻouka i nā pilina a me nā mea pūnana, caching, etc.;
pūʻolo no ka hana ʻana i nā noi ma ka ʻaoʻao mua;
ka maʻalahi o ka hoʻoponopono ʻana i nā ala hoʻokele;
config liʻiliʻi;
kākoʻo palapala swagger.

Hoʻokaʻawale ʻia ka hana i kekahi mau pūʻolo:

@nestjsx/crud - ka pūʻolo kumu i hāʻawi ʻia e ka mea hoʻonaninani Crud() no ka hana ala ala, hoʻonohonoho a me ka hōʻoia;
@nestjsx/crud-noi - he pūʻolo e hāʻawi ana i kahi mea hana nīnau / parser no ka hoʻohana ʻana ma ka ʻaoʻao mua;
@nestjsx/crud-typeorm - he pūʻolo no ka hoʻohui ʻana me TypeORM, e hāʻawi ana i ka lawelawe maʻamau TypeOrmCrudService me nā ʻano CRUD no ka hana ʻana me nā hui i ka waihona.

Ma kēia kumu aʻo e pono ai mākou i nā pūʻolo pūnanajsx/crud a pūnanajsx/crud-typeorm. ʻO ka mua, e hoʻokomo iā lākou

yarn add @nestjsx/crud class-transformer class-validator

Nā pūʻolo papa-hoololi и papa-hōʻoia i loko o kēia palapala noi no ka wehewehe ʻana i nā lula no ka hoʻololi ʻana i nā hiʻohiʻona hiʻohiʻona a me ka hōʻoia ʻana i nā noi e hiki mai ana. ʻO kēia mau pūʻolo mai ka mea kākau hoʻokahi, no laila ua like nā interface.

Hoʻokō pololei o CRUD

E lawe mākou i ka papa inoa o nā mea hoʻohana i kumu hoʻohālike. E loaʻa i nā mea hoʻohana nā kahua penei: id, username, displayName, email. id - kahua hoʻonui ʻakomi, email и username - nā kahua kūikawā. He maʻalahi! ʻO nā mea i koe e hoʻokō i kā mākou manaʻo ma ke ʻano o kahi noi Nest.
Pono mua ʻoe e hana i kahi module users, nona ke kuleana no ka hana pū me nā mea hoʻohana. E hoʻohana kākou i ka cli mai NestJS a hoʻokō i ke kauoha ma ka papa kuhikuhi kumu o kā mākou papahana nest g module users.

nā mea hoʻohana pūnana g module

dmitrii@dmitrii-HP-ZBook-17-G3:~/projects/nest-rest git:(master*)$ nest g module users
CREATE /src/users/users.module.ts (82 bytes)
UPDATE /src/app.module.ts (312 bytes)

Ma kēia module e hoʻohui mākou i kahi waihona entities, kahi e loaʻa ai nā hiʻohiʻona o kēia module. ʻO ka mea kūikawā, e hoʻohui kākou i ka faila user.entity.ts me ka wehewehe ʻana i ke kumu hoʻohana:

user.entity.ts

import { Column, Entity, PrimaryGeneratedColumn } from 'typeorm';
@Entity()
export class User {
@PrimaryGeneratedColumn()
id: string;
@Column({unique: true})
email: string;
@Column({unique: true})
username: string;
@Column({nullable: true})
displayName: string;
}

I mea e "ʻikeʻia" kēia kŘkohu e kā mākou noi, pono ia ma ka module UsersModule lawe mai TypeOrmModule ka mea i lalo:

users.module.ts

import { Module } from '@nestjs/common';
import { UsersController } from './controllers/users/users.controller';
import { UsersService } from './services/users/users.service';
import { TypeOrmModule } from '@nestjs/typeorm';
import { User } from './entities/user.entity';
@Module({
controllers: [UsersController],
providers: [UsersService],
imports: [
TypeOrmModule.forFeature([User])
]
})
export class UsersModule {}

ʻO ia hoʻi, eia mākou e lawe mai nei TypeOrmModule, kahi ma ke ʻano he ʻano hoʻohālikelike forFeature Hōʻike mākou i kahi papa inoa o nā hiʻohiʻona e pili ana i kēia module.

ʻO nā mea a pau i koe, ʻo ka hana ʻana i ka mea pili i ka waihona. Hoʻohana ka mīkini neʻe no kēia mau kumu. No ka hana ʻana i kahi neʻe e pili ana i nā loli i nā hiʻohiʻona, pono ʻoe e holo i ke kauoha npm run migration:generate -- CreateUserTable:

poʻomanaʻo spoiler

$ npm run migration:generate -- CreateUserTable
Migration /home/dmitrii/projects/nest-rest/migrations/1563346135367-CreateUserTable.ts has been generated successfully.
Done in 1.96s.

ʻAʻole pono mākou e kākau i ka neʻe ʻana me ka lima, ua hiki mai nā mea āpau. ʻAʻole anei kēia he hana mana! Akā naʻe, ʻaʻole ʻo ia wale nō. E nānā kākou i ka waihona neʻe i hana ʻia:

1563346135367-CreateUserTable.ts

import {MigrationInterface, QueryRunner} from "typeorm";
export class CreateUserTable1563346816726 implements MigrationInterface {
public async up(queryRunner: QueryRunner): Promise<any> {
await queryRunner.query(`CREATE TABLE "user" ("id" SERIAL NOT NULL, "email" character varying NOT NULL, "username" character varying NOT NULL, "displayName" character varying, CONSTRAINT "UQ_e12875dfb3b1d92d7d7c5377e22" UNIQUE ("email"), CONSTRAINT "UQ_78a916df40e02a9deb1c4b75edb" UNIQUE ("username"), CONSTRAINT "PK_cace4a159ff9f2512dd42373760" PRIMARY KEY ("id"))`);
}
public async down(queryRunner: QueryRunner): Promise<any> {
await queryRunner.query(`DROP TABLE "user"`);
}
}

E like me kāu e ʻike ai, ʻaʻole wale ke ala no ka hoʻomaka ʻana i ka neʻe ʻana i hana ʻia, akā ke ʻano no ka hoʻihoʻi ʻana. Mahalo!
ʻO ka mea i koe e ʻōwili i kēia neʻe. Hana ʻia kēia me kēia kauoha:

npm run migration:run.

ʻO ia nō, i kēia manawa ua neʻe nā hoʻololi schema i ka waihona.
A laila, e hana mākou i kahi lawelawe e kuleana no ka hana ʻana me nā mea hoʻohana a hoʻoili mai ia TypeOrmCrudService. Pono e hāʻawi ʻia ka waihona o ka mea hoihoi i ka palena o ka mea kūkulu makua, i kā mākou hihia User waihona waihona.

users.service.ts

import { Injectable } from '@nestjs/common';
import { TypeOrmCrudService } from '@nestjsx/crud-typeorm';
import { User } from '../../entities/user.entity';
import { InjectRepository } from '@nestjs/typeorm';
import { Repository } from 'typeorm';
@Injectable()
export class UsersService extends TypeOrmCrudService<User>{
constructor(@InjectRepository(User) usersRepository: Repository<User>){
super(usersRepository);
}
}

Pono mākou i kēia lawelawe ma ka mea hoʻoponopono users. No ka hana ʻana i kahi mea hoʻoponopono, e kākau i ka console nest g controller users/controllers/users

nest g mea hoʻohana/nā mea hoʻohana/mea hoʻohana

dmitrii@dmitrii-HP-ZBook-17-G3:~/projects/nest-rest git:(master*)$ nest g controller users/controllers/users
CREATE /src/users/controllers/users/users.controller.spec.ts (486 bytes)
CREATE /src/users/controllers/users/users.controller.ts (99 bytes)
UPDATE /src/users/users.module.ts (188 bytes)

E wehe kākou i kēia mea hoʻoponopono a hoʻoponopono iā ia e hoʻohui i kahi kilokilo liʻiliʻi pūnanajsx/crud. Ma ka papa UsersController E hoʻohui kākou i ka mea hoʻonani e like me kēia:

@Crud({
model: {
type: User
}
})

Crud he mea hoʻonani e hoʻohui i ka mea hoʻoponopono i nā ʻano kūpono no ka hana ʻana me ke kumu hoʻohālike. Hōʻike ʻia ke ʻano hoʻohālike ma ke kahua model.type hoʻonohonoho hoʻonaninani.
ʻO ka hana ʻelua e hoʻokō i ka interface CrudController<User>. ʻIke ʻia ka code controller "Assembled" penei:

import { Controller } from '@nestjs/common';
import { Crud, CrudController } from '@nestjsx/crud';
import { User } from '../../entities/user.entity';
import { UsersService } from '../../services/users/users.service';
@Crud({
model: {
type: User
}
})
@Controller('users')
export class UsersController implements CrudController<User>{
constructor(public service: UsersService){}
}

A ʻo ia wale nō! I kēia manawa, kākoʻo ka mea hoʻoponopono i nā hana holoʻokoʻa me ke kumu hoʻohālike! Mai manaʻoʻiʻo mai iaʻu? E hoʻāʻo kāua i kā mākou noi ma ka hana!

Ke hana ʻana i kahi palapala nīnau ma TestMace

No ka hoʻāʻo ʻana i kā mākou lawelawe e hoʻohana mākou i kahi IDE e hana pū me ka API TestMace. No ke aha ʻo TestMace? Ke hoʻohālikelike ʻia me nā huahana like, loaʻa iā ia nā pono penei:

hana ikaika me nā mea hoʻololi. I kēia manawa, aia kekahi mau ʻano o nā mea hoʻololi, ʻo kēlā me kēia mea e pāʻani i kahi kuleana kikoʻī: nā mea i kūkulu ʻia i loko, nā ʻano hoʻololi, nā ʻano hoʻololi kaiapuni. Aia kēlā me kēia ʻano hoʻololi i kahi node me ke kākoʻo no ka mīkini hoʻoilina;
E hana maʻalahi i nā palapala me ka ʻole o ka papahana. E kūkākūkā ʻia kēia ma lalo nei;
he palapala hiki ke heluhelu ʻia e ke kanaka e hiki ai iā ʻoe ke mālama i ka papahana ma nā ʻōnaehana mana mana;
autocompletion, syntax highlighting, variable value highlighting;
Kākoʻo wehewehe API me ka hiki ke hoʻokomo mai Swagger.

E hoʻomaka kākou i kā mākou kikowaena me ke kauoha npm start a hoʻāʻo e komo i ka papa inoa o nā mea hoʻohana. ʻO ka papa inoa o nā mea hoʻohana, e hoʻoholo ana e kā mākou hoʻonohonoho hoʻonohonoho, hiki ke loaʻa mai ka url localhost:3000/mea hoʻohana. E noi kāua i kēia URL.
Ma hope o ka holo ʻana iā TestMace hiki iā ʻoe ke ʻike i kahi interface e like me kēia:

Aia ma ka ʻaoʻao hema he kumulāʻau papahana me kahi kumu kumu hana Hoʻolohe. E ho'āʻo kākou e hana i ka noi mua e kiʻi i ka papa inoa o nā mea hoʻohana. No kēia e hana mākou NīnauStep node Hana ʻia kēia ma ka papa kuhikuhi o ka node Project Hoʻohui i ka node -> RequestStep.

Ma ke kahua URL, hoʻopili i ka localhost:3000/mea hoʻohana a holo i ka noi. E loaʻa iā mākou ke code 200 me kahi ʻāpana ʻole i ke kino pane. Hiki ke hoʻomaopopo, ʻaʻole mākou i hoʻohui i kekahi.
E hana kākou i palapala e komo ai kēia mau ʻanuʻu:

hana i mea hoʻohana;
noi i ka id o ka mea hoʻohana hou;
ka holoi ʻana e ka mea hoʻohana id i hana ʻia ma ka ʻanuʻu 1.

No laila, e hele kāua. No ka maʻalahi, e hana mākou i kahi node like waihona. ʻO ka mea nui, he waihona wale nō kēia e mālama ai mākou i ka palapala holoʻokoʻa. No ka hana ʻana i kahi kōpili kōpili, koho i Project mai ka papa kuhikuhi o ka node Hoʻohui i ka node -> Kōpena. E kāhea kākou i ka node hoʻopaʻa-hana. I loko o kahi node hoʻopaʻa-hana E hana mākou i kā mākou noi mua e hana i mea hoʻohana. E kāhea kākou i ka node i hana hou ʻia hoʻohana-mea hoʻohana. ʻO ia hoʻi, i kēia manawa e like ke ʻano o ka hierarchy node:

E hele kāua i ka papa hāmama hoʻohana-mea hoʻohana node. E hoʻokomo i kēia mau ʻāpana no ka noi:

ʻAno noi - POST
HKH - localhost:3000/mea hoʻohana
Kino - JSON me ka waiwai {"email": "[email protected]", "displayName": "New user", "username": "user"}

E hoʻokō kāua i kēia noi. Ke ʻōlelo nei kā mākou noi ua hana ʻia ka moʻolelo.

ʻAe, e nānā kākou i kēia ʻoiaʻiʻo. I mea e hana ai me ka id o ka mea hoʻohana i hana ʻia ma nā ʻanuʻu aʻe, pono e mālama ʻia kēia ʻāpana. Kūpono ka mīkini no kēia. nā mea hoʻololi ikaika. E hoʻohana kākou i kā mākou laʻana e nānā pehea e hana pū ai me lākou. Ma ka ʻaoʻao i hoʻopaʻa ʻia o ka pane, ma ka ʻaoʻao o ka node id i ka papa kuhikuhi, koho i ka mea Hāʻawi i ka loli. I ka pahu kamaʻilio pono ʻoe e hoʻonohonoho i nā ʻāpana aʻe:

wahi — ma kahi o na kupuna e hana ai i ka hoololi dynamic. E koho kāua hoʻopaʻa-hana
ʻOkoʻa inoa — ka inoa o keia hoololi. E kāhea kāua userId.

Eia ke ʻano o ke kaʻina hana o ka hana ʻana i kahi hoʻololi dynamic:

I kēia manawa, i kēlā me kēia manawa e hoʻokō ʻia ai kēia nīnau, e hoʻonui ʻia ka waiwai o ka hoʻololi dynamic. A no ka mea kākoʻo nā mea hoʻololi ikaika i ke ʻano o ka hoʻoilina hierarchical, variable userId e loaʻa i nā mamo hoʻopaʻa-hana node o kekahi pae nesting.
He mea pono kēia hoʻololi iā mākou i ka noi aʻe. ʻO ia, e noi mākou i ka mea hoʻohana hou. Me he keiki node hoʻopaʻa-hana e hana mākou i kahi noi nānā-inā loaʻa me ka palena url kaulike localhost:3000/users/${$dynamicVar.userId}. Nānā i ka hoʻolālā ${variable_name} loaʻa kēia i ka waiwai o kahi loli. No ka mea Loaʻa iā mākou kahi hoʻololi ikaika, no laila e loaʻa iā ʻoe pono e komo i ka mea $dynamicVar, ʻo ia hoʻi ke komo piha ʻana i kahi hoʻololi dynamic userId e like me keia ${$dynamicVar.userId}. E hoʻokō i ka noi a e hōʻoia i ka noi ʻana i ka ʻikepili pololei.
ʻO ka ʻanuʻu hope i koe ke noi e holoi. Pono mākou ʻaʻole wale e nānā i ka hana o ka holoi ʻana, akā, no laila, e ʻōlelo, e hoʻomaʻemaʻe ma hope o mākou iho i ka waihona, no ka mea He kū hoʻokahi ka leka uila a me ka inoa inoa. No laila, i loko o ka check-create node e hana mākou i kahi noi holoi-mea hoʻohana me nā ʻāpana aʻe

ʻAno noi - DELETE
HKH - localhost:3000/users/${$dynamicVar.userId}

E hoʻomaka kākou. Kali mākou. Hauʻoli mākou i ka hopena)

ʻAe, hiki iā mākou ke holo i kēia palapala holoʻokoʻa i kēlā me kēia manawa. No ka holo ʻana i ka palapala, pono ʻoe e koho mai ka papa kuhikuhi hoʻopaʻa-hana mea node holo.

E hoʻokō ʻia nā nodes i ka palapala i kekahi ma hope o kekahi
Hiki iā ʻoe ke mālama i kēia palapala i kāu papahana ma ka holo ʻana Kōnae -> Mālama i ka papahana.

hopena

ʻAʻole hiki ke kūpono nā hiʻohiʻona āpau o nā mea hana i hoʻohana ʻia i ke ʻano o kēia ʻatikala. No ka mea hewa nui - ka pūʻolo pūnanajsx/crud - ʻaʻole i uhi ʻia kēia mau kumuhana:

hōʻoia maʻamau a me ka hoʻololi ʻana o nā hiʻohiʻona;
ʻōlelo nīnau ikaika a me kona hoʻohana maʻalahi ma mua;
ka wehewehe hou ʻana a me ka hoʻohui ʻana i nā ala hou i nā mea hoʻokele crud;
kākoʻo swagger;
hoʻokele hoʻokele.

Eia nō naʻe, ʻo ka mea i wehewehe ʻia i loko o ka ʻatikala ua lawa ia e hoʻomaopopo ai ʻo kahi ʻoihana ʻoihana e like me NestJS he mau mea hana no ka prototyping noi wikiwiki. A ʻo kahi IDE maikaʻi like TestMace hiki iā ʻoe ke mālama i ka wikiwiki i hāʻawi ʻia.

Kumu kumu no kēia ʻatikala, me ka papahana TestMace, loaʻa i ka waihona https://github.com/TestMace/nest-rest. E wehe i kahi papahana TestMace e hana wale ia ma ka app Kōnae -> Wehe i ka papahana.

Source: www.habr.com

Hana ʻia ʻo CRUD wikiwiki me ka pūnana, @nestjsx/crud a me TestMace