diff options
Diffstat (limited to 'user_guide_src')
| -rw-r--r-- | user_guide_src/source/database/forge.rst | 53 |
1 files changed, 40 insertions, 13 deletions
diff --git a/user_guide_src/source/database/forge.rst b/user_guide_src/source/database/forge.rst index 48642ad7e..ce915e270 100644 --- a/user_guide_src/source/database/forge.rst +++ b/user_guide_src/source/database/forge.rst @@ -6,6 +6,7 @@ The Database Forge Class contains methods that help you manage your database. .. contents:: Table of Contents + :depth: 3 **************************** Initializing the Forge Class @@ -35,8 +36,11 @@ object:: $this->dbforge->some_method(); -$this->dbforge->create_database('db_name') -========================================== +******************************* +Creating and Dropping Databases +******************************* + +**$this->dbforge->create_database('db_name')** Permits you to create the database specified in the first parameter. Returns TRUE/FALSE based on success or failure:: @@ -46,8 +50,7 @@ Returns TRUE/FALSE based on success or failure:: echo 'Database created!'; } -$this->dbforge->drop_database('db_name') -========================================== +**$this->dbforge->drop_database('db_name')** Permits you to drop the database specified in the first parameter. Returns TRUE/FALSE based on success or failure:: @@ -57,6 +60,8 @@ Returns TRUE/FALSE based on success or failure:: echo 'Database deleted!'; } +:returns: TRUE on success, FALSE on failure. + **************************** Creating and Dropping Tables **************************** @@ -123,11 +128,12 @@ After the fields have been defined, they can be added using ``$this->dbforge->add_field($fields);`` followed by a call to the ``create_table()`` method. -$this->dbforge->add_field() ---------------------------- +**$this->dbforge->add_field()** The add fields method will accept the above array. +:returns: The DB_forge object + Passing strings as fields ------------------------- @@ -180,6 +186,8 @@ below is for MySQL. $this->dbforge->add_key(array('blog_name', 'blog_label')); // gives KEY `blog_name_blog_label` (`blog_name`, `blog_label`) +:returns: The DB_forge object + Creating a table ================ @@ -211,6 +219,8 @@ You could also pass optional table attributes, such as MySQL's ``ENGINE``:: ``create_table()`` will always add them with your configured *char_set* and *dbcollat* values, as long as they are not empty (MySQL only). +:returns: TRUE on success, FALSE on failure. + Dropping a table ================ @@ -224,6 +234,8 @@ Execute a DROP TABLE statement and optionally add an IF EXISTS clause. // Produces: DROP TABLE IF EXISTS table_name $this->dbforge->drop_table('table_name'); +:returns: TRUE on success, FALSE on failure. + Renaming a table ================ @@ -234,13 +246,17 @@ Executes a TABLE rename $this->dbforge->rename_table('old_table_name', 'new_table_name'); // gives ALTER TABLE old_table_name RENAME TO new_table_name +:returns: TRUE on success, FALSE on failure. + **************** Modifying Tables **************** -$this->dbforge->add_column() -============================ +Adding a Column to a Table +========================== + +**$this->dbforge->add_column()** The ``add_column()`` method is used to modify an existing table. It accepts the same field array as above, and can be used for an unlimited @@ -269,8 +285,12 @@ Examples:: 'preferences' => array('type' => 'TEXT', 'first' => TRUE) ); -$this->dbforge->drop_column() -============================= +:returns: TRUE on success, FALSE on failure. + +Dropping a Column From a Table +============================== + +**$this->dbforge->drop_column()** Used to remove a column from a table. @@ -279,8 +299,12 @@ Used to remove a column from a table. $this->dbforge->drop_column('table_name', 'column_to_drop'); -$this->dbforge->modify_column() -=============================== +:returns: TRUE on success, FALSE on failure. + +Modifying a Column in a Table +============================= + +**$this->dbforge->modify_column()** The usage of this method is identical to ``add_column()``, except it alters an existing column rather than adding a new one. In order to @@ -295,4 +319,7 @@ change the name you can add a "name" key into the field defining array. ), ); $this->dbforge->modify_column('table_name', $fields); - // gives ALTER TABLE table_name CHANGE old_name new_name TEXT
\ No newline at end of file + // gives ALTER TABLE table_name CHANGE old_name new_name TEXT + +:returns: TRUE on success, FALSE on failure. + |