DB_DataObject::factory()
DB_DataObject::factory() -- Autoload and instantate class based on table name.
Synopsis
mixed DB_DataObject::factory ([string $table])
Description
This is the recommended way to autoload a class, and instantate it. The class is loaded based on
the configuration settings (class_location and class_prefix) for table to class naming.
Throws
Table 39-1. Possible PEAR_Error values
| Error code | Error message | Meaning | Solution |
|---|
| DB_DATAOBJECT_ERROR_NOCLASS | "could not autoload $class" | | |
Note
This method can be called statically or dynamically.
Example
Example 39-1. Simple fetch of data based on Primary Key
<?php
// set up our options
$opts = &PEAR::getStaticProperty('DB_DataObject','options');
$opts = array(
'class_location' => '/home/me/Projects/myapplication/DataObjects',
'class_prefix' => 'DataObjects_'
);
// loads the file: /home/me/Projects/myapplication/DataObjects/Person.php
// and checks that the class DataObjects_Person exists, and returns an
// instance of it.
$person = DB_DataObject::factory('person');
if ($person->get(12)) {
print_r($person);
} else {
echo "NO person 12 exists";
}
// it can also be used in a dynamically
class DataObjects_MyTable {
function anExample() {
$person = $this->factory('person');
// supported in version 1.7.2
$another_mytable = $this->factory();
$another_person = $person->factory();
}
}
?>
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