[英]Codeigniter datamapper one to many relationship
我有兩個表rostertype和rostertypepositions
我創建了兩個模型
class Roster_type extends DataMapper{
var $table = "rostertype";
var $has_many = array(
'position' => array(
'class' => 'Roster_typeposition',
'other_field' => 'roster_position',
'join_self_as' => '',
'join_other_as' => 'RosterType'
)
);
function __construct($id = NULL){
parent::__construct($id);
}
function getAllRoster(){
return $this->count();
}
}
class Roster_typeposition extends DataMapper{
var $table = "rostertypepositions";
var $default_order_by = array('PositionIndex'=>'asc');
var $has_one = array(
'roster_position' => array(
'class' => 'Roster_type',
'other_field' => 'position',
'join_self_as' => 'RosterType',
'join_other_as' => ''
)
);
function __construct($id = NULL){
parent::__construct($id);
}
function get_all_positions(){
$u = $this->get_iterated();
foreach ($u as $ab=>$d){
echo "<pre>";print_r($d->roster_position->get());echo "</pre>";
}
die();
}
}
但是由於某種原因我遇到了這個錯誤
Error Number: 1146
Table 'ad_8cceab3cf7883a5.rostertype_rostertypepositions' doesn't exist
SELECT `rostertype`.*
FROM (`rostertype`)
LEFT OUTER JOIN `rostertype_rostertypepositions` position_rostertype_rostertypepositions ON `rostertype`.`id` = `position_rostertype_rostertypepositions`.`_id`
WHERE `position_rostertype_rostertypepositions`.`RosterType_id` = 2
Filename: /Applications/MAMP/htdocs/IBM_bluemix/Development/Draftbeast-Dev/libraries/Datamapper.php
Line Number: 1344
我不知道它是如何生成該表position_rostertype_rostertypepositions
。 請幫助,我在做什么錯。
通過采取模型中的空白字段來解決
class Roster_typeposition extends DataMapper{
var $model = 'rostertypepositions';
var $table = "rostertypepositions";
var $default_order_by = array('PositionIndex'=>'asc');
var $has_one = array(
'roster_position' => array(
'class' => 'Roster_type',
'other_field' => 'position',
'join_self_as' => 'RosterType',
)
);
和
class Roster_type extends DataMapper{
var $model = 'Roster_type';
var $table = "rostertype";
var $has_many = array(
'position' => array(
'class' => 'Roster_typeposition',
'other_field' => 'roster_position',
'join_other_as' => 'RosterType'
)
);
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