Database examples, including DBTNG.

'DBTNG' means 'Database: The Next Generation.' Yes, Backdroplers are nerds.

General documentation is available at database abstraction layer documentation and at Database API.

The several examples here demonstrate basic database usage.

In Backdrop the usage of db_query() for INSERT, UPDATE, or DELETE is deprecated, because it is database-dependent. Instead specific functions are provided to perform these operations: db_insert(), db_update(), and db_delete() do the job now. (Note that backdrop_write_record() is also deprecated.)

db_insert() example:

  // INSERT INTO {dbtng_example} (name, surname) VALUES('John, 'Doe')
  db_insert('dbtng_example')
    ->fields(array('name' => 'John', 'surname' => 'Doe'))
    ->execute();

db_update() example:

  // UPDATE {dbtng_example} SET name = 'Jane' WHERE name = 'John'
  db_update('dbtng_example')
    ->fields(array('name' => 'Jane'))
    ->condition('name', 'John')
    ->execute();

db_delete() example:

  // DELETE FROM {dbtng_example} WHERE name = 'Jane'
  db_delete('dbtng_example')
    ->condition('name', 'Jane')
    ->execute();

See Database Abstraction Layer

See also

db_insert()

db_update()

db_delete()

backdrop_write_record()

Parent topics

File

modules/examples/dbtng_example/dbtng_example.module, line 14
This is an example outlining how a module can make use of the DBTNG database API in Backdrop.

Functions

Name Locationsort descending Description
dbtng_example_install modules/examples/dbtng_example/dbtng_example.install Implements hook_install().
dbtng_example_schema modules/examples/dbtng_example/dbtng_example.install Implements hook_schema().
dbtng_example_entry_insert modules/examples/dbtng_example/dbtng_example.module Save an entry in the database.
dbtng_example_entry_update modules/examples/dbtng_example/dbtng_example.module Update an entry in the database.
dbtng_example_entry_delete modules/examples/dbtng_example/dbtng_example.module Delete an entry from the database.
dbtng_example_entry_load modules/examples/dbtng_example/dbtng_example.module Read from the database using a filter array.
dbtng_example_advanced_list modules/examples/dbtng_example/dbtng_example.module Render a filtered list of entries in the database.
dbtng_example_menu modules/examples/dbtng_example/dbtng_example.module Implements hook_menu().
dbtng_example_list modules/examples/dbtng_example/dbtng_example.module Render a list of entries in the database.
dbtng_example_form_add modules/examples/dbtng_example/dbtng_example.module Prepare a simple form to add an entry, with all the interesting fields.
dbtng_example_form_add_submit modules/examples/dbtng_example/dbtng_example.module Submit handler for 'add entry' form.
dbtng_example_form_update modules/examples/dbtng_example/dbtng_example.module Sample UI to update a record.
dbtng_example_form_update_callback modules/examples/dbtng_example/dbtng_example.module AJAX callback handler for the pid select.
dbtng_example_form_update_submit modules/examples/dbtng_example/dbtng_example.module Submit handler for 'update entry' form.

Classes

Name Locationsort descending Description
DBTNGExampleUnitTestCase modules/examples/dbtng_example/dbtng_example.test Default test case for the dbtng_example module.