我有一个与其他模型有几个hasMany关联的模型。我注意到的一件事是,当我对父表进行查询时,也会查询所有关联的表。为了表现的缘故,我想阻止这种情况,因为我不需要每次调用父级模型时的这些数据。使用find查找hasMany模型的相关查询
这是我目前的父模型:
class UserEntity extends UserAgentAppModel {
var $name = 'UserEntity';
var $primaryKey = 'entity_id';
var $actsAs = array('EavEntity');
var $validate = array(
'user_name'=>array(
'rule'=>'isUnique',
'message'=>'This username has already been taken. Please try again'
),
'user_pass' => array(
'rule' => array('between', 8, 16),
'message' => 'Passwords must be between 8 and 16 characters long.')
);
var $hasMany = array(
'UserEntityVarchar' => array(
'className' => 'UserEntityVarchar',
'foreignKey' => 'entity_id',
'isEav' => 'true'
),
'UserEntityDatetime' => array(
'className' => 'UserEntityDatetime',
'foreignKey' => 'entity_id',
'isEav' => 'true'
),
'UserEntityInteger' => array(
'className' => 'UserEntityInteger',
'foreignKey' => 'entity_id',
'isEav' => 'true'
),
'UserEntityBoolean' => array(
'className' => 'UserEntityBoolean',
'foreignKey' => 'entity_id',
'isEav' => 'true'
),
'UserEntityArray' => array(
'className' => 'UserEntityArray',
'foreignKey' => 'entity_id',
'isEav' => 'true'
)
);
);?>
这是我的查询日志是送走。我看到的问题是,查询12-17总是在使用find时发生。但是,我正在使用行为从我的eav模型中提取这些数据。
1 SHOW FULL COLUMNS FROM `user_entities` 8 8 1
2 SELECT CHARACTER_SET_NAME FROM INFORMATION_SCHEMA.COLLATIONS WHERE COLLATION_NAME= 'latin1_swedish_ci'; 1 1 1
3 SHOW FULL COLUMNS FROM `user_entity_varchars` 4 4 1
4 SHOW FULL COLUMNS FROM `user_entity_datetimes` 4 4 1
5 SHOW FULL COLUMNS FROM `user_entity_integers` 4 4 1
6 SHOW FULL COLUMNS FROM `user_entity_booleans` 4 4 1
7 SHOW FULL COLUMNS FROM `user_entity_arrays` 4 4 1
12 SELECT `UserEntity`.`entity_id`, `UserEntity`.`user_name`, `UserEntity`.`user_pass`, `UserEntity`.`user_status`, `UserEntity`.`user_group`, `UserEntity`.`instance_id`, `UserEntity`.`is_logged_in`, `UserEntity`.`is_visible` FROM `user_entities` AS `UserEntity` WHERE 1 = 1 2 2 0
13 SELECT `UserEntityVarchar`.`value_id`, `UserEntityVarchar`.`attribute_id`, `UserEntityVarchar`.`entity_id`, `UserEntityVarchar`.`value` FROM `user_entity_varchars` AS `UserEntityVarchar` WHERE `UserEntityVarchar`.`entity_id` IN (1, 2) 3 3 0
14 SELECT `UserEntityDatetime`.`value_id`, `UserEntityDatetime`.`attribute_id`, `UserEntityDatetime`.`entity_id`, `UserEntityDatetime`.`value` FROM `user_entity_datetimes` AS `UserEntityDatetime` WHERE `UserEntityDatetime`.`entity_id` IN (1, 2) 0 0 0
15 SELECT `UserEntityInteger`.`value_id`, `UserEntityInteger`.`attribute_id`, `UserEntityInteger`.`entity_id`, `UserEntityInteger`.`value` FROM `user_entity_integers` AS `UserEntityInteger` WHERE `UserEntityInteger`.`entity_id` IN (1, 2) 0 0 0
16 SELECT `UserEntityBoolean`.`value_id`, `UserEntityBoolean`.`attribute_id`, `UserEntityBoolean`.`entity_id`, `UserEntityBoolean`.`value` FROM `user_entity_booleans` AS `UserEntityBoolean` WHERE `UserEntityBoolean`.`entity_id` IN (1, 2) 0 0 0
17 SELECT `UserEntityArray`.`value_id`, `UserEntityArray`.`attribute_id`, `UserEntityArray`.`entity_id`, `UserEntityArray`.`value` FROM `user_entity_arrays` AS `UserEntityArray` WHERE `UserEntityArray`.`entity_id` IN (1, 2) 0 0 0
22 SHOW FULL COLUMNS FROM `eav_attributes` 8 8 1
23 SELECT `EavAttribute`.`attribute_id`, `EavAttribute`.`attribute_code`, `EavAttribute`.`backend_model`, `EavAttribute`.`frontend_input`, `EavAttribute`.`frontend_label`, `EavAttribute`.`is_required`, `EavAttribute`.`is_user_defined`, `EavAttribute`.`is_unique` FROM `eav_attributes` AS `EavAttribute` WHERE `attribute_id` = 5 1 1 0
24 SELECT `EavAttribute`.`attribute_id`, `EavAttribute`.`attribute_code`, `EavAttribute`.`backend_model`, `EavAttribute`.`frontend_input`, `EavAttribute`.`frontend_label`, `EavAttribute`.`is_required`, `EavAttribute`.`is_user_defined`, `EavAttribute`.`is_unique` FROM `eav_attributes` AS `EavAttribute` WHERE `attribute_id` = 6 1 1 0
25 SELECT `EavAttribute`.`attribute_id`, `EavAttribute`.`attribute_code`, `EavAttribute`.`backend_model`, `EavAttribute`.`frontend_input`, `EavAttribute`.`frontend_label`, `EavAttribute`.`is_required`, `EavAttribute`.`is_user_defined`, `EavAttribute`.`is_unique` FROM `eav_attributes` AS `EavAttribute` WHERE `attribute_id` = 7
http://stackoverflow.com/questions/7440589/foreign-key-definition-in-cakephp-lazy-loading/7440679#7440679检查此... – Rikesh