Pakalipano, REST API yakhala muyeso wa chitukuko cha mapulogalamu a pa intaneti, kulola kuti chitukuko chigawidwe mu magawo odziimira. Mitundu yosiyanasiyana yotchuka monga Angular, React, Vue ndi ena amagwiritsidwa ntchito pa UI. Madivelopa akumbuyo amatha kusankha kuchokera kuzilankhulo ndi zilankhulo zosiyanasiyana. Lero ndikufuna kunena za chimango ngati NestJS. Ife tiri mkati Zithunzi za TestMace Timagwiritsa ntchito kwambiri ntchito zamkati. Kugwiritsa ntchito chisa ndi paketi @nestjsx/crud, tidzapanga pulogalamu ya CRUD yosavuta.

Chifukwa chiyani NestJS

Posachedwapa, machitidwe ambiri akumbuyo awonekera m'gulu la JavaScript. Ndipo ngati potengera magwiridwe antchito amapereka mphamvu zofananira ku Nest, ndiye kuti mu chinthu chimodzi zimapambana - izi ndi zomangamanga. Zotsatira zotsatirazi za NestJS zimakupatsani mwayi wopanga ntchito zamafakitale ndikukulitsa magulu akuluakulu:

pogwiritsa ntchito TypeScript ngati chilankhulo chachikulu chakukula. Ngakhale NestJS imathandizira JavaScript, ntchito zina sizingagwire ntchito, makamaka ngati tikukamba za phukusi lachitatu;
kukhalapo kwa chidebe cha DI, chomwe chimakulolani kuti mupange zida zosakanikirana;
Magwiridwe a chimango palokha lagawidwa paokha kusinthana zigawo zikuluzikulu. Mwachitsanzo, pansi pa hood ngati chimango chingagwiritsidwe ntchito ngati kufotokoza, ndi fastify, kugwira ntchito ndi database, chisa kunja kwa bokosi amapereka zomangira typorm, mongo, sequelize;
NestJS ndi agnostic papulatifomu ndipo imathandizira REST, GraphQL, Websockets, gRPC, etc.

Chimango chokhacho chimalimbikitsidwa ndi chimango cha Angular frontend ndipo mwachidziwitso chimakhala chofanana kwambiri ndi icho.

Kukhazikitsa NestJS ndi Kutumiza Ntchitoyi

Nest ili ndi phukusi chisa/ cli, yomwe imakupatsani mwayi wotumiza mwachangu chimango choyambira. Tiyeni tiyike phukusili padziko lonse lapansi:

npm install --global @nest/cli

Pambuyo kukhazikitsa, tidzapanga maziko a pulogalamu yathu ndi dzina nest-rest. Izi zimachitika pogwiritsa ntchito lamulo nest new nest-rest.

chisa chatsopano chisa-mpumulo

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

Tidzasankha ulusi ngati woyang'anira phukusi lathu.
Pakadali pano mutha kuyambitsa seva ndi lamulo npm start ndi kupita ku adilesi http://localhost:3000 mutha kuwona tsamba lalikulu. Komabe, ichi sichifukwa chake tasonkhana pano ndipo tikupita patsogolo.

Kupanga ntchito ndi database

Ndinasankha PostrgreSQL ngati DBMS ya nkhaniyi. Palibe kutsutsana pa zokonda; mwa lingaliro langa, iyi ndi DBMS yokhwima kwambiri, yokhala ndi mphamvu zonse zofunika. Monga tanenera kale, Nest imapereka kuphatikiza ndi mapaketi osiyanasiyana kuti agwire ntchito ndi nkhokwe. Chifukwa Popeza kusankha kwanga kudagwera pa PostgreSQL, zingakhale zomveka kusankha TypeORM ngati ORM. Tiyeni tiyike mapaketi ofunikira kuti aphatikizidwe ndi nkhokwe:

yarn add typeorm @nestjs/typeorm pg

Kuti, zomwe phukusi lililonse limafunikira:

typeorm - phukusi mwachindunji kuchokera ku ORM yokha;
@nestjs/typeorm - TypeORM phukusi la NestJS. Amawonjezera ma modules kuti alowe mu ma modules a polojekiti, komanso gulu la okongoletsa othandizira;
pg - dalaivala wogwira ntchito ndi PostgreSQL.

Chabwino, maphukusi aikidwa, tsopano muyenera kuyambitsa database yokha. Kutumiza nkhokwe, ndigwiritsa ntchito docker-compose.yml ndi izi:

makina oyimba.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

Monga mukuwonera, fayiloyi imakonza kukhazikitsidwa kwa zotengera 2:

db ndi chidebe chomwe chili ndi database. Kwa ife, postgresql version 11.2 imagwiritsidwa ntchito;
adminer-database manager. Amapereka mawonekedwe apaintaneti kuti muwone ndikuwongolera nkhokwe.

Kuti mugwire ntchito ndi ma tcp, ndinawonjezera 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

Ndizo zonse, mutha kuyambitsa zotengera ndi lamulo docker-compose up -d. Kapena mu console yosiyana ndi lamulo docker-compose up.

Chifukwa chake, maphukusi akhazikitsidwa, nkhokwe yakhazikitsidwa, zonse zomwe zatsala ndikupangitsa kuti akhale mabwenzi wina ndi mnzake. Kuti muchite izi, muyenera kuwonjezera fayilo yotsatira ku mizu ya polojekiti: 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"
}
}

Kukonzekera uku kudzagwiritsidwa ntchito pa cli typeorm.

Tiyeni tiwone masinthidwe awa mwatsatanetsatane. Pa mizere 3 ndi 4 timapeza dzina lolowera ndi mawu achinsinsi kuchokera pazosintha zachilengedwe. Izi ndizosavuta mukakhala ndi malo angapo (dev, siteji, prod, ndi zina). Mwachikhazikitso, dzina lolowera ndi postgres ndipo mawu achinsinsi ndi chitsanzo. Zina zonsezo ndizochepa, kotero tingoyang'ana pa magawo osangalatsa kwambiri:

synchronize - Imawonetsa ngati schema ya database iyenera kupangidwa yokha ntchito ikayamba. Samalani ndi njirayi ndipo musagwiritse ntchito popanga, apo ayi mudzataya deta. Izi ndizothandiza pokonza ndi kukonza pulogalamu. Monga njira ina, mungagwiritse ntchito lamulo schema:sync kuchokera ku CLI TypeORM.
dropSchema - sinthaninso schema nthawi iliyonse pomwe kulumikizana kukhazikitsidwa. Monga m'mbuyomu, njirayi iyenera kugwiritsidwa ntchito pokhapokha pokonza ndi kukonza pulogalamuyo.
mabungwe - njira zomwe mungayang'ane mafotokozedwe amitundu. Chonde dziwani kuti kusaka ndi chigoba kumathandizidwa.
cli.entitiesDir ndiye chikwatu chomwe mitundu yopangidwa kuchokera ku TypeORM CLI iyenera kusungidwa mwachisawawa.

Kuti tithe kugwiritsa ntchito mawonekedwe onse a TypeORM mu pulogalamu yathu ya Nest, tifunika kulowetsa gawoli. TypeOrmModule в AppModule. Iwo. wanu AppModule zidzawoneka motere:

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 {}

Monga mukuonera, njira forRoot kasinthidwe komweko kogwirira ntchito ndi database kumasamutsidwa monga mu fayilo ya ormconfig.ts

Kukhudza komaliza kumakhalabe - onjezani ntchito zingapo zogwirira ntchito ndi TypeORM mu package.json. Chowonadi ndi chakuti CLI imalembedwa mu javascript ndipo imayenda mu nodejs chilengedwe. Komabe, zitsanzo zathu zonse ndi kusamuka zidzalembedwa m'malembedwe. Choncho, m'pofunika transpilate kusamuka kwathu ndi zitsanzo tisanagwiritse ntchito CLI. Pachifukwa ichi, tikufuna phukusi la ts-node:

yarn add -D ts-node

Pambuyo pake, onjezani malamulo ofunikira pa 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"

Lamulo loyamba, typeorm, likuwonjezera ts-node wrapper kuyendetsa TypeORM cli. Malamulo otsalawo ndi njira zazifupi zomwe inu, monga wopanga mapulogalamu, muzigwiritsa ntchito pafupifupi tsiku lililonse:
migration:generate - kupanga kusamuka kutengera kusintha kwa zitsanzo zanu.
migration:create - kupanga kusamuka kopanda kanthu.
migration:run - kuyambitsa kusamuka.
Chabwino, ndi zomwezo tsopano, tawonjezera phukusi lofunikira, tidakonza pulogalamuyo kuti igwire ntchito ndi nkhokwe zonse kuchokera ku cli komanso kuchokera ku pulogalamu yokha, ndikuyambitsanso DBMS. Yakwana nthawi yoti tiwonjezere malingaliro pakugwiritsa ntchito kwathu.

Kuyika ma phukusi opangira CRUD

Pogwiritsa ntchito Nest yokha, mutha kupanga API yomwe imakulolani kupanga, kuwerenga, kusintha, ndi kufufuta. Yankho limeneli lidzakhala losinthika momwe zingathere, koma nthawi zina lidzakhala lopanda ntchito. Mwachitsanzo, ngati mukufuna kupanga prototype mwachangu, mutha kudzipereka nthawi zambiri kuti muzitha kusinthika mwachangu. Zomangamanga zambiri zimapereka magwiridwe antchito popanga CRUD pofotokoza mtundu wa data wa bungwe linalake. Ndipo Nest ndi chimodzimodzi! Izi zimaperekedwa ndi phukusi @nestjsx/crud. Maluso ake ndi osangalatsa kwambiri:

unsembe mosavuta ndi kasinthidwe;
DBMS kudziyimira pawokha;
chilankhulo champhamvu chamafunso chomwe chimatha kusefa, kusanja, kusanja, kunyamula maubale ndi mabungwe omwe ali ndi zisa, kusungitsa, etc.;
phukusi lopangira zopempha kutsogolo;
kuwongolera kosavuta kwa njira zowongolera;
config yaying'ono;
thandizo la zolemba za swagger.

Ntchitoyi imagawidwa m'magulu angapo:

@nestjsx/crud - phukusi lofunikira lomwe wokongoletsa amapereka Crud() pakupanga njira, kasinthidwe ndi kutsimikizira;
@nestjsx/crud-request - phukusi lomwe limapereka womanga / wopangira mafunso kuti agwiritse ntchito mbali yakutsogolo;
@nestjsx/crud-typeorm - phukusi lophatikizika ndi TypeORM, lopereka ntchito zoyambira za TypeOrmCrudService ndi njira za CRUD zogwirira ntchito ndi mabungwe omwe ali munkhokwe.

Mu phunziro ili tidzafunika phukusi chisajsx/crud ndi chisajsx/crud-typeorm. Choyamba, tiyeni tiyike izo

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

Phukusi kalasi-transformer и class-validator mu ntchito iyi pakufunika kufotokozera momveka bwino malamulo osinthira zitsanzo zachitsanzo ndikutsimikizira zopempha zomwe zikubwera, motsatira. Maphukusiwa akuchokera kwa wolemba yemweyo, kotero kuti mawonekedwe ake ndi ofanana.

Kukhazikitsa kwachindunji kwa CRUD

Titenga mndandanda wa ogwiritsa ntchito ngati chitsanzo. Ogwiritsa adzakhala ndi magawo awa: id, username, displayName, email. id - gawo lowonjezera auto, email и username - minda yapadera. Ndi zophweka! Zomwe zatsala ndikukhazikitsa lingaliro lathu ngati pulogalamu ya Nest.
Choyamba muyenera kupanga module users, omwe adzakhala ndi udindo wogwira ntchito ndi ogwiritsa ntchito. Tiyeni tigwiritse ntchito cli kuchokera ku NestJS ndikuchita lamulo mu bukhu la pulojekiti yathu nest g module users.

nest g module ogwiritsa

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)

Mu gawoli tiwonjezera chikwatu cha mabungwe, pomwe tidzakhala ndi zitsanzo za gawoli. Makamaka, tiyeni tiwonjeze apa fayilo user.entity.ts ndi kufotokoza kwachitsanzo:

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;
}

Kuti fanizoli "liwonekere" ndikugwiritsa ntchito kwathu, ndikofunikira mu gawoli UsersModule import TypeOrmModule zotsatirazi:

ogwiritsa.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 {}

Ndiko kuti, apa tikutumiza kunja TypeOrmModule, kumene ngati njira parameter forFeature Tikuwonetsa mndandanda wamitundu yokhudzana ndi gawoli.

Zomwe zatsala ndikupanga gulu lofananira mu database. Njira yosamuka imagwira ntchito pazifukwa izi. Kuti mupange kusamuka kutengera kusintha kwa zitsanzo, muyenera kuyendetsa lamulo npm run migration:generate -- CreateUserTable:

Mutu wa spoiler

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

Sitinafunikire kulemba kusamukako pamanja, zonse zidachitika mwamatsenga. Kodi ichi si chozizwitsa! Komabe, si zokhazo. Tiyeni tiwone fayilo yosamukira yomwe idapangidwa:

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"`);
}
}

Monga mukuwonera, sikuti njira yokhayo yoyambira kusamuka idapangidwa yokha, komanso njira yobwezeretsanso. Zodabwitsa!
Chotsalira ndikutulutsa kusamukaku. Izi zimachitika ndi lamulo ili:

npm run migration:run.

Ndizomwezo, tsopano zosintha za schema zasamukira ku database.
Kenaka, tidzapanga ntchito yomwe idzakhala ndi udindo wogwira ntchito ndi ogwiritsa ntchito ndikulowa nawo TypeOrmCrudService. Malo omwe ali ndi chidwi ayenera kuperekedwa kwa omwe amamanga makolo, ifeyo. User posungira.

ogwiritsa.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);
}
}

Tidzafunika ntchitoyi muzowongolera users. Kuti mupange chowongolera, lembani mu console nest g controller users/controllers/users

nest g controller users/controller/users

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)

Tiyeni titsegule chowongolera ichi ndikusintha kuti tiwonjezere matsenga pang'ono chisajsx/crud. Pa kalasi UsersController Tiyeni tiwonjeze zokongoletsa motere:

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

Crud ndi zokongoletsera zomwe zimawonjezera kwa wolamulira njira zoyenera zogwirira ntchito ndi chitsanzo. Mtundu wachitsanzo ukuwonetsedwa m'munda model.type masinthidwe okongoletsa.
Gawo lachiwiri ndikukhazikitsa mawonekedwe CrudController<User>. "Assembled" controller code ikuwoneka motere:

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){}
}

Ndipo ndizo zonse! Tsopano wowongolera amathandizira seti yonse ya ntchito ndi chitsanzo! Osandikhulupirira? Tiyeni tiyese kugwiritsa ntchito kwathu!

Kupanga Query Script mu TestMace

Kuti tiyese ntchito yathu tidzagwiritsa ntchito IDE kuti tigwire ntchito ndi API Zithunzi za TestMace. Chifukwa chiyani TestMace? Poyerekeza ndi zinthu zofanana, ili ndi zabwino izi:

ntchito yamphamvu ndi zosintha. Pakalipano, pali mitundu ingapo yamitundu yosiyanasiyana, yomwe ili ndi gawo linalake: zosinthika zomangidwa, zosinthika, zosinthika zachilengedwe. Zosintha zilizonse zimakhala za node yothandizidwa ndi cholowa;
Pangani zolemba mosavuta popanda kupanga mapulogalamu. Izi zidzakambidwa pansipa;
mawonekedwe owerengeka ndi anthu omwe amakulolani kusunga pulojekiti mu machitidwe owongolera;
kumalizitsa zokha, kuwunikira mawu, kuwunikira kosinthika;
Thandizo lofotokozera za API ndikutha kutumiza kuchokera ku Swagger.

Tiyeni tiyambe seva yathu ndi lamulo npm start ndikuyesa kupeza mndandanda wa ogwiritsa ntchito. Mndandanda wa ogwiritsa ntchito, kutengera kasinthidwe ka owongolera athu, atha kupezeka kuchokera ku url localhost:3000/users. Tiyeni tipemphe ku ulalowu.
Mukatha kuyendetsa TestMace mutha kuwona mawonekedwe ngati awa:

Pamwamba kumanzere pali mtengo wa polojekiti wokhala ndi node ya mizu Project. Tiyeni tiyese kupanga pempho loyamba kuti tipeze mndandanda wa ogwiritsa ntchito. Kwa ichi tidzapanga Pemphani Gawo mfundo Izi zimachitika mumndandanda wazotsatira za Project node Onjezani node -> RequestStep.

M'munda wa URL, ikani localhost:3000/users ndikuyendetsa pempho. Tidzalandira code 200 ndi gulu lopanda kanthu mu gulu loyankha. Ndizomveka, sitinaonjezepo aliyense.
Tiyeni tipange script yomwe ikhale ndi izi:

kupanga wogwiritsa;
pemphani ID ya wogwiritsa ntchito watsopano;
Kuchotsa ndi id yogwiritsa ntchito yomwe idapangidwa mu gawo 1.

Kotero, tiyeni tizipita. Kuti zitheke, tiyeni tipange node ngati Foda. Kwenikweni, ichi ndi chikwatu chomwe tidzasungiramo zolemba zonse. Kuti mupange node ya Foda, sankhani Project kuchokera pazosankha za node Onjezani mfundo -> Foda. Tiyeni tiyitane mfundo fufuzani-pangani. Mkati mwa mfundo fufuzani-pangani Tiyeni tipange pempho lathu loyamba kuti tipange wosuta. Tiyeni tiyimbe mfundo yomwe yangopangidwa kumene kulenga-wogwiritsa. Ndiko kuti, pakadali pano utsogoleri wa node udzawoneka motere:

Tiyeni tipite ku tabu yotsegula kulenga-wogwiritsa mfundo. Tiyeni tiyike magawo otsatirawa a pempho:

Mtundu wofunsira - POST
URL - localhost:3000/users
Thupi - JSON lamtengo wapatali {"email": "[email protected]", "displayName": "New user", "username": "user"}

Tiyeni tikwaniritse pempholi. Ntchito yathu imanena kuti mbiriyo idapangidwa.

Chabwino, tiyeni tione mfundo imeneyi. Kuti mugwiritse ntchito ndi id ya wogwiritsa ntchito wopangidwa m'masitepe otsatirawa, parameter iyi iyenera kusungidwa. Makinawa ndi abwino kwa izi. zosinthika zosinthika. Tiyeni tigwiritse ntchito chitsanzo chathu kuti tiwone momwe tingagwirire nawo ntchito. Mu tabu yosankhidwa ya yankho, pafupi ndi id node mumenyu yankhani, sankhani chinthucho Perekani kusinthasintha. Mu bokosi la dialog muyenera kukhazikitsa magawo awa:

Node - momwe mwa makolo kuti apange kusintha kosinthika. Tiyeni tisankhe fufuzani-pangani
Mayina osintha - dzina la kusinthaku. Tiyeni tiyimbe userId.

Izi ndi momwe njira yopangira kusintha kosinthika kumawonekera:

Tsopano, nthawi iliyonse pamene funsoli likuchitidwa, mtengo wa kusintha kosinthika udzasinthidwa. Ndipo chifukwa zosinthika zosinthika zimathandizira njira ya cholowa chokhazikika, chosinthika userId zidzapezeka mwa ana fufuzani-pangani mfundo za mulingo uliwonse wa zisa.
Kusinthaku kudzakhala kothandiza kwa ife mu pempho lotsatira. Mwakutero, tidzapempha wogwiritsa ntchito watsopano. Monga mwana wa node fufuzani-pangani tipanga pempho fufuzani ngati alipo ndi parameter url ofanana localhost:3000/users/${$dynamicVar.userId}. Onani mapangidwe ${variable_name} uku ndikupeza mtengo wosinthika. Chifukwa Tili ndi kusintha kosinthika, kotero kuti muchipeze muyenera kupeza chinthucho $dynamicVar, i.e. kupeza kwathunthu kusintha kosinthika userId zidzawoneka chonchi ${$dynamicVar.userId}. Tiyeni tipereke pempho ndikuwonetsetsa kuti zomwe zafunsidwa molondola.
Gawo lomaliza lomwe latsala ndikupempha kufufutidwa. Sitiyenera kungoyang'ana momwe kufufutitsa kumagwirira ntchito, komanso, kunena kwake, kudziyeretsa tokha mu database, chifukwa. Maimelo ndi malo olowera ndi apadera. Chifukwa chake, mu cheke-panga node tipanga zopempha zochotsa-wogwiritsa ndi magawo otsatirawa

Mtundu wa pempho - DELETE
ulalo - localhost:3000/users/${$dynamicVar.userId}

Tiyeni tiyambitse. Tikuyembekezera. Timasangalala ndi zotsatira zake)

Chabwino, tsopano tikhoza kuyendetsa malemba onsewa nthawi iliyonse. Kuti mugwiritse ntchito script muyenera kusankha kuchokera ku menyu yankhani fufuzani-pangani node chinthu Thamangani.

Node zomwe zili mu script zidzachitidwa chimodzi ndi chimodzi
Mutha kusunga script iyi ku polojekiti yanu pothamanga Fayilo -> Sungani polojekiti.

Pomaliza

Zonse zomwe zidagwiritsidwa ntchito sizingafanane ndi zomwe zili m'nkhaniyi. Ponena za wolakwa wamkulu - phukusi chisajsx/crud - mitu yotsatirayi idawululidwa:

kutsimikizira mwachizolowezi ndi kusintha kwa zitsanzo;
chilankhulo champhamvu chofunsa komanso kugwiritsa ntchito bwino kutsogolo;
kutanthauziranso ndi kuwonjezera njira zatsopano kwa owongolera crud;
chithandizo chamankhwala;
kasamalidwe ka caching.

Komabe, ngakhale zomwe zafotokozedwa m'nkhaniyi ndizokwanira kumvetsetsa kuti ngakhale dongosolo lamabizinesi ngati NestJS lili ndi zida zopangira ma prototyping mwachangu. Ndipo IDE yabwino ngati Zithunzi za TestMace amakulolani kuti musunge mayendedwe omwe mwapatsidwa.

Magwero a nkhaniyi, pamodzi ndi polojekitiyi Zithunzi za TestMace, kupezeka m'nkhokwe https://github.com/TestMace/nest-rest. Kutsegula ntchito Zithunzi za TestMace ingochitani mu pulogalamuyi Fayilo -> Tsegulani polojekiti.

Source: www.habr.com

Kupanga CRUD mwachangu ndi chisa, @nestjsx/crud ndi TestMace