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authorAndrey Andreev <narf@bofh.bg>2012-07-04 11:32:14 +0200
committerAndrey Andreev <narf@bofh.bg>2012-07-04 11:32:14 +0200
commitb94b91afc77bcc133ff282559015933602bb2d3f (patch)
tree08329d26cfbe5e4aecde1f780c642380e1286105
parent474674f8402e3f6198fb2c99a78b6ec2eb80710a (diff)
Some user guide updates
-rw-r--r--user_guide_src/source/database/configuration.rst122
-rw-r--r--user_guide_src/source/database/connecting.rst34
-rw-r--r--user_guide_src/source/general/models.rst61
3 files changed, 118 insertions, 99 deletions
diff --git a/user_guide_src/source/database/configuration.rst b/user_guide_src/source/database/configuration.rst
index 7a19c840f..c17de600a 100644
--- a/user_guide_src/source/database/configuration.rst
+++ b/user_guide_src/source/database/configuration.rst
@@ -12,26 +12,44 @@ it the respective environment config folder.
The config settings are stored in a multi-dimensional array with this
prototype::
- $db['default']['hostname'] = "localhost";
- $db['default']['username'] = "root";
- $db['default']['password'] = "";
- $db['default']['database'] = "database_name";
- $db['default']['dbdriver'] = "mysql";
- $db['default']['dbprefix'] = "";
- $db['default']['pconnect'] = TRUE;
- $db['default']['db_debug'] = FALSE;
- $db['default']['cache_on'] = FALSE;
- $db['default']['cachedir'] = "";
- $db['default']['char_set'] = "utf8";
- $db['default']['dbcollat'] = "utf8_general_ci";
- $db['default']['swap_pre'] = "";
- $db['default']['autoinit'] = TRUE;
- $db['default']['stricton'] = FALSE;
-
-If you use PDO as your dbdriver, you can specify the full DSN string describe a connection to the database like this::
-
+ $db['default'] = array(
+ 'dsn' => '',
+ 'hostname' => 'localhost',
+ 'username' => 'root',
+ 'password' => '',
+ 'database' => 'database_name',
+ 'dbdriver' => 'mysqli',
+ 'dbprefix' => '',
+ 'pconnect' => TRUE,
+ 'db_debug' => TRUE,
+ 'cache_on' => FALSE,
+ 'cachedir' => '',
+ 'char_set' => 'utf8',
+ 'dbcollat' => 'utf8_general_ci',
+ 'swap_pre' => '',
+ 'autoinit' => TRUE,
+ 'stricton' => FALSE,
+ 'failover' => array()
+ );
+
+Some database drivers (such as PDO, PostgreSQL, Oracle, ODBC) might
+require a full DSN string to be provided. If that is the case, you
+should use the 'dsn' configuration setting, as if you're using the
+driver's underlying native PHP extension, like this::
+
+ // PDO
$db['default']['dsn'] = 'pgsql:host=localhost;port=5432;dbname=database_name';
+ // Oracle
+ $db['default']['dsn'] = '//localhost/XE';
+
+.. note:: If you do not specify a DSN string for a driver that requires it, CodeIgniter
+ will try to build it with the rest of the provided settings.
+
+.. note:: If you provide a DSN string and it is missing some valid settings (e.g. the
+ database character set), which are present in the rest of the configuration
+ fields, CodeIgniter will append them.
+
You can also specify failovers for the situation when the main connection cannot connect for some reason.
These failovers can be specified by setting the failover for a connection like this::
@@ -41,7 +59,7 @@ These failovers can be specified by setting the failover for a connection like t
'username' => '',
'password' => '',
'database' => '',
- 'dbdriver' => 'mysql',
+ 'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => TRUE,
'db_debug' => TRUE,
@@ -58,7 +76,7 @@ These failovers can be specified by setting the failover for a connection like t
'username' => '',
'password' => '',
'database' => '',
- 'dbdriver' => 'mysql',
+ 'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => TRUE,
'db_debug' => TRUE,
@@ -81,30 +99,34 @@ production, test, etc.) under a single installation, you can set up a
connection group for each, then switch between groups as needed. For
example, to set up a "test" environment you would do this::
- $db['test']['hostname'] = "localhost";
- $db['test']['username'] = "root";
- $db['test']['password'] = "";
- $db['test']['database'] = "database_name";
- $db['test']['dbdriver'] = "mysql";
- $db['test']['dbprefix'] = "";
- $db['test']['pconnect'] = TRUE;
- $db['test']['db_debug'] = FALSE;
- $db['test']['cache_on'] = FALSE;
- $db['test']['cachedir'] = "";
- $db['test']['char_set'] = "utf8";
- $db['test']['dbcollat'] = "utf8_general_ci";
- $db['test']['swap_pre'] = "";
- $db['test']['autoinit'] = TRUE;
- $db['test']['stricton'] = FALSE;
+ $db['test'] = array(
+ 'dsn' => '',
+ 'hostname' => 'localhost',
+ 'username' => 'root',
+ 'password' => '',
+ 'database' => 'database_name',
+ 'dbdriver' => 'mysqli',
+ 'dbprefix' => '',
+ 'pconnect' => TRUE,
+ 'db_debug' => TRUE,
+ 'cache_on' => FALSE,
+ 'cachedir' => '',
+ 'char_set' => 'utf8',
+ 'dbcollat' => 'utf8_general_ci',
+ 'swap_pre' => '',
+ 'autoinit' => TRUE,
+ 'stricton' => FALSE,
+ 'failover' => array()
+ );
Then, to globally tell the system to use that group you would set this
variable located in the config file::
- $active_group = "test";
+ $active_group = 'test';
-Note: The name "test" is arbitrary. It can be anything you want. By
-default we've used the word "default" for the primary connection, but it
-too can be renamed to something more relevant to your project.
+.. note:: The name 'test' is arbitrary. It can be anything you want. By
+ default we've used the word "default" for the primary connection,
+ but it too can be renamed to something more relevant to your project.
Query Builder
-------------
@@ -119,8 +141,8 @@ when the database classes are initialized.
$query_builder = TRUE;
-.. note:: that some CodeIgniter classes such as Sessions require Active
- Records be enabled to access certain functionality.
+.. note:: that some CodeIgniter classes such as Sessions require Query
+ Builder to be enabled to access certain functionality.
Explanation of Values:
----------------------
@@ -128,11 +150,12 @@ Explanation of Values:
====================== ==================================================================================================
Name Config Description
====================== ==================================================================================================
-**hostname** The hostname of your database server. Often this is "localhost".
+**dsn** The DSN connect string (an all-in-one configuration sequence).
+**hostname** The hostname of your database server. Often this is 'localhost'.
**username** The username used to connect to the database.
**password** The password used to connect to the database.
**database** The name of the database you want to connect to.
-**dbdriver** The database type. ie: mysql, postgre, odbc, etc. Must be specified in lower case.
+**dbdriver** The database type. ie: mysqli, postgre, odbc, etc. Must be specified in lower case.
**dbprefix** An optional table prefix which will added to the table name when running :doc:
`Query Builder <query_builder>` queries. This permits multiple CodeIgniter installations
to share one database.
@@ -144,14 +167,7 @@ Explanation of Values:
**char_set** The character set used in communicating with the database.
**dbcollat** The character collation used in communicating with the database
- .. note:: For MySQL and MySQLi databases, this setting is only used
- as a backup if your server is running PHP < 5.2.3 or MySQL < 5.0.7
- (and in table creation queries made with DB Forge). There is an
- incompatibility in PHP with mysql_real_escape_string() which can
- make your site vulnerable to SQL injection if you are using a
- multi-byte character set and are running versions lower than these.
- Sites using Latin-1 or UTF-8 database character set and collation are
- unaffected.
+ .. note:: Only used in the 'mysql' and 'mysqli' drivers.
**swap_pre** A default table prefix that should be swapped with dbprefix. This is useful for distributed
applications where you might run manually written queries, and need the prefix to still be
@@ -163,11 +179,11 @@ Explanation of Values:
**port** The database port number. To use this value you have to add a line to the database config array.
::
- $db['default']['port'] = 5432;
+ $db['default']['port'] = 5432;
====================== ==================================================================================================
.. note:: Depending on what database platform you are using (MySQL, PostgreSQL,
etc.) not all values will be needed. For example, when using SQLite you
will not need to supply a username or password, and the database name
will be the path to your database file. The information above assumes
- you are using MySQL.
+ you are using MySQL. \ No newline at end of file
diff --git a/user_guide_src/source/database/connecting.rst b/user_guide_src/source/database/connecting.rst
index 5822ca62c..9b8117076 100644
--- a/user_guide_src/source/database/connecting.rst
+++ b/user_guide_src/source/database/connecting.rst
@@ -57,25 +57,28 @@ file.
To connect manually to a desired database you can pass an array of
values::
- $config['hostname'] = "localhost";
- $config['username'] = "myusername";
- $config['password'] = "mypassword";
- $config['database'] = "mydatabase";
- $config['dbdriver'] = "mysql";
- $config['dbprefix'] = "";
- $config['pconnect'] = FALSE;
- $config['db_debug'] = TRUE;
- $config['cache_on'] = FALSE;
- $config['cachedir'] = "";
- $config['char_set'] = "utf8";
- $config['dbcollat'] = "utf8_general_ci";
+ $config['hostname'] = 'localhost';
+ $config['username'] = 'myusername';
+ $config['password'] = 'mypassword';
+ $config['database'] = 'mydatabase';
+ $config['dbdriver'] = 'mysqli';
+ $config['dbprefix'] = '';
+ $config['pconnect'] = FALSE;
+ $config['db_debug'] = TRUE;
+ $config['cache_on'] = FALSE;
+ $config['cachedir'] = '';
+ $config['char_set'] = 'utf8';
+ $config['dbcollat'] = 'utf8_general_ci';
$this->load->database($config);
For information on each of these values please see the :doc:`configuration
page <configuration>`.
-.. note:: For the PDO driver, $config['hostname'] should look like
- this: 'mysql:host=localhost'
+.. note:: For the PDO driver, you should use the $config['dsn'] setting
+ instead of 'hostname' and 'database':
+
+ |
+ | $config['dsn'] = 'mysql:host=localhost;dbname=mydatabase';
Or you can submit your database values as a Data Source Name. DSNs must
have this prototype::
@@ -149,5 +152,4 @@ connections, you can explicitly close the connection.
::
- $this->db->close();
-
+ $this->db->close(); \ No newline at end of file
diff --git a/user_guide_src/source/general/models.rst b/user_guide_src/source/general/models.rst
index 2e1e025ee..4e52a9648 100644
--- a/user_guide_src/source/general/models.rst
+++ b/user_guide_src/source/general/models.rst
@@ -72,10 +72,11 @@ The basic prototype for a model class is this::
class Model_name extends CI_Model {
- function __construct()
- {
- parent::__construct();
- }
+ public function __construct()
+ {
+ parent::__construct();
+ }
+
}
Where **Model_name** is the name of your class. Class names **must** have
@@ -87,10 +88,11 @@ example, if your class is this::
class User_model extends CI_Model {
- function __construct()
- {
- parent::__construct();
- }
+ public function __construct()
+ {
+ parent::__construct();
+ }
+
}
Your file will be this::
@@ -102,7 +104,7 @@ Loading a Model
Your models will typically be loaded and called from within your
:doc:`controller <controllers>` functions. To load a model you will use
-the following function::
+the following method::
$this->load->model('model_name');
@@ -112,33 +114,34 @@ application/models/blog/queries.php you'll load it using::
$this->load->model('blog/queries');
-Once loaded, you will access your model functions using an object with
-the same name as your class::
+Once loaded, you will access your model methods using an object with the
+same name as your class::
$this->load->model('model_name');
- $this->model_name->function();
+ $this->model_name->method();
If you would like your model assigned to a different object name you can
-specify it via the second parameter of the loading function::
+specify it via the second parameter of the loading method::
- $this->load->model('model_name', 'fubar');
+ $this->load->model('model_name', 'foobar');
- $this->fubar->function();
+ $this->foobar->method();
Here is an example of a controller, that loads a model, then serves a
view::
class Blog_controller extends CI_Controller {
- function blog()
- {
- $this->load->model('blog');
+ public function blog()
+ {
+ $this->load->model('blog');
- $data['query'] = $this->Blog->get_last_ten_entries();
+ $data['query'] = $this->Blog->get_last_ten_entries();
+
+ $this->load->view('blog', $data);
+ }
- $this->load->view('blog', $data);
- }
}
@@ -170,15 +173,13 @@ database. The following options for connecting are available to you:
- You can manually pass database connectivity settings via the third
parameter::
- $config['hostname'] = "localhost";
- $config['username'] = "myusername";
- $config['password'] = "mypassword";
- $config['database'] = "mydatabase";
- $config['dbdriver'] = "mysql";
- $config['dbprefix'] = "";
+ $config['hostname'] = 'localhost';
+ $config['username'] = 'myusername';
+ $config['password'] = 'mypassword';
+ $config['database'] = 'mydatabase';
+ $config['dbdriver'] = 'mysqli';
+ $config['dbprefix'] = '';
$config['pconnect'] = FALSE;
$config['db_debug'] = TRUE;
- $this->load->model('Model_name', '', $config);
-
-
+ $this->load->model('Model_name', '', $config); \ No newline at end of file