Development:Developer FAQ: Difference between revisions
From MoodleDocs
Dan Stowell (talk | contribs) No edit summary |
Dan Stowell (talk | contribs) No edit summary |
||
| Line 3: | Line 3: | ||
===Where can I see a schema for the structure of the Moodle database?=== | ===Where can I see a schema for the structure of the Moodle database?=== | ||
When installing Moodle, the database tables are generated and updated by various db-handling scripts located in various places. There is no canonical schema representation, although the [[Coding#Database_structures coding guidelines for database structure]] give an outline of the general approach. | When installing Moodle, the database tables are generated and updated by various db-handling scripts located in various places. There is no canonical schema representation, although the [[Coding#Database_structures | coding guidelines for database structure]] give an outline of the general approach. | ||
| Line 18: | Line 18: | ||
===How do I insert/retrieve records in the database, without creating my own database connections?=== | ===How do I insert/retrieve records in the database, without creating my own database connections?=== | ||
Always use the "datalib" functions, such as insert_record() or get_record(). Look at [http://moodle.sourceforge.net/dhawes-phpdoc/moodlecore/_lib_datalib_php.html the documentation for datalib.php] for | Always use the "datalib" functions, such as insert_record() or get_record(). This helps with database abstraction (e.g. running on either MySQL or Postgres) as well as maintaining a single database connection. Moodle uses ADODB for database abstraction. | ||
Look at [http://moodle.sourceforge.net/dhawes-phpdoc/moodlecore/_lib_datalib_php.html the documentation for datalib.php] for the list of functions and details of use. | |||
===How do I get/set configuration settings?=== | ===How do I get/set configuration settings?=== | ||
... | ... | ||
Revision as of 11:08, 5 April 2006
Moodle's database
Where can I see a schema for the structure of the Moodle database?
When installing Moodle, the database tables are generated and updated by various db-handling scripts located in various places. There is no canonical schema representation, although the coding guidelines for database structure give an outline of the general approach.
How to get/set information when writing new Moodle code
How do I find out the currently-logged-on user?
The global object $USER, which contains the numeric $USER->id among other things.
How do I find out the current course?
...
How do I insert/retrieve records in the database, without creating my own database connections?
Always use the "datalib" functions, such as insert_record() or get_record(). This helps with database abstraction (e.g. running on either MySQL or Postgres) as well as maintaining a single database connection. Moodle uses ADODB for database abstraction.
Look at the documentation for datalib.php for the list of functions and details of use.
How do I get/set configuration settings?
...
