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Get by id (generated API)

Reads one row by its primary key, or by any other column with the second param. With select and deep, it is the detail screen of your app in one call.
Method GET
URL /api/gen/admin/mysql8/inventory/customers/get-by-id/:id[/:primaryKey]
Body none
Query params select, deep, find (extra conditions)
Answer data : the row, or null when nothing matches
Databases MongoDB, MySQL, MariaDB, PostgreSQL, SQL Server, Oracle, TiDB, Percona
Cached yes, with enableCaching on the table
From code g.sys.db.gen.getByIdGen
API id GEN_GET_BY_ID (groups, settings, hooks, WebSocket subscriptions)
The other family Get by id as a schema API

Schemaless : the data passes as it is

The generated APIs never read the schema of the table. Nothing is converted, validated, defaulted, encrypted or numbered : what you send is what the database gets, and a filter matches the type you send ("22" does not match the number 22). On MongoDB, strings which look like ObjectIds are converted. Every table has these APIs, with or without a schema ; the same operations under /api/schema apply the schema.

The URL

/api/gen/admin/mysql8/inventory/customers/get-by-id/:id[/:primaryKey] : replace admin with the user path of your account, mysql8 with your instance, inventory with the database and customers with the table. The examples use this table :

customer_id first_name last_name last_update pincode isActive
1 Bob lin 2022-11-14 04: 34: 58 382345 1
2 Alice Page 2022-10-15 02: 10: 40 382346 1
3 Mallory Brown 2022-09-13 03: 44: 05 382347 1
4 Eve Mathly 2022-11-12 01: 59: 33 382348 1
5 Eve Page 2022-11-12 01: 59: 33 382349 1

By primary key

GET /api/gen/admin/mysql8/inventory/customers/get-by-id/1

{
    "success": true,
    "statusCode": 200,
    "data": { "customer_id": 1, "first_name": "Bob", "last_name": "lin", "last_update": "2022-11-14T04:34:58.000Z", "pincode": 382345, "isActive": 1 }
}
  • The primary key is the one of the table (_id on MongoDB, the primary key column on SQL, or isPrimaryKey in the schema). An unknown id answers data: null with success: true.

By any column

Name the column as the second param :

GET /api/gen/admin/mysql8/inventory/customers/get-by-id/Bob/first_name
GET /api/gen/admin/mysql8/inventory/customers/get-by-id/382345/pincode
  • When several rows match, the first one is returned.
  • The value is converted to the type of the column, so 382345 is compared as a number.
GET /api/gen/admin/mysql8/inventory/customers/get-by-id/1?select=first_name,last_name
GET /api/gen/admin/mysql8/inventory/customers/get-by-id/1?deep=[{s_key:'customer_id',t_col:'orders',t_key:'customer_id',isMultiple:true}]
  • deep works as on get all, with the relations of the schema when the table has one.

One more condition

find narrows the match further, for example to make sure the row belongs to the caller :

GET /api/gen/admin/mysql8/inventory/customers/get-by-id/1?find={isActive:1}

From your code

g.sys.db.gen.getByIdGen makes the same call from custom APIs, hooks, events, schedulers and test cases, with the same headers and params. Pass true as the second argument to get the whole response envelope instead of data.

Headers

Every call takes the request headers : the tokens, x-am-response-case, x-am-content-type-response (JSON, XML, YAML…), x-am-response-object-type: make_flat, x-am-cache-control, x-am-get-encrypted-data, x-am-internationalization, x-am-tenant-username, x-am-meta.

Errors

Code When
401 The token in x-am-authorization is missing or invalid.
403 No group of the API user grants this API of this table, or a field of the request.
404 The instance, database or table of the URL does not exist.
400 The query or the body is wrong : the error messages say which key and why.