Actually in my scenario I am binding relations in model's constructor function. Actually I need to use a model attribute in my model relationship and Cakephp preventing using model attribute in default relationships. So I can't use
public $hasMany = array(
'ProductDetail' => array(
'className' => 'ProductDetail',
'conditions' => array(
'ProductDetail.language_id' => $this->languageId //Throws error
),
'dependent' => true
),
);
So I made a trick. I did bind model relations on model's __construct() function. Below is my code
public function __construct($id = false, $table = null, $ds = null) {
parent::__construct($id, $table, $ds);
$this->bindModel(array(
"hasMany" => array(
'ProductDetail' => array(
'className' => 'ProductDetail',
'dependent' => true,
'conditions' => array(
'ProductDetail.language_id' => $this->languageId //Doesn't throw an error
)
)
)
)
);
}
This trick works for me in each scenario. But when I delete a product, dependent model can't be deleted when I am binding relations under __construct() function. Is there any way to make this trick works or I need to trigger dependent functionality manually ?
After doing research I found that pass second parameter to false on bindModel function. Because this will make your on-the-fly binding last the duration of the request. So in that case Model::bindModel function looks like
$this->bindModel(array(
"hasMany" => array(
'ProductDetail' => array(
'className' => 'ProductDetail',
'dependent' => true,
'conditions' => array(
'ProductDetail.language_id' => $this->languageId
)
)
)
), false
);
Related
I have problem with HABTM models. When I try to fetch any related model f.e. like this:
$this->Tagi->find('first');
I dont get any results for associated model. Result looks like this:
array(
'Tagi' => array(
'id' => '1',
'nazwa' => 'sth'
),
'Instytucje' => array()
)
I am sure that there should be result, I've double checked it, even
$this->Tagi->getDataSource()->getLog(false, false)
shows correct query, that fetches right results.
If you have any idea whats wrong plz give me a hint.
Tagi model:
public $hasAndBelongsToMany = array(
'Instytucje' =>
array(
'className' => 'Instytucje.Instytucje',
'joinTable' => 'instytucje-tagi',
'foreignKey' => 'tag_id',
'associationForeignKey' => 'instytucja_id',
'unique'=> true
)
);
Instytucje model:
public $hasAndBelongsToMany = array(
'Tagi' =>
array(
'className' => 'Instytucje.Tagi',
'joinTable' => 'instytucje-tagi',
'foreignKey' => 'instytucja_id',
'associationForeignKey' => 'tag_id',
'unique'=> true
)
);
EDIT:
Main problem is that HABTM refers to AppModel causing error:
Error: Table app_models for model AppModel was not found in datasource prod.
Which can be bypassed by adding $useTable in AppModel, which results in prior problem.
SOLVED
When using naming convention far beyond this Cake use, you have use third model with $useTable pointed on reference table.
Moreover its important to correctly point Cake to classes inside plugins.
I think you're problem relates to the fact that you are not using CakePHP's naming conventions. From the look of the query being generated Cake doesn't know how to correctly alias the join table, hence getting an AppModel alias in your query. I suspect that this is causing issues when Cake tries to build the results array from the query.
This might not work, but try creating a model for the joins table called InstytucjeTagi; then update your associations to use this using the with key:-
Tagi model:
public $hasAndBelongsToMany = array(
'Instytucje' =>
array(
'className' => 'Instytucje.Instytucje',
'joinTable' => 'instytucje-tagi',
'with' => 'InstytucjeTagi',
'foreignKey' => 'tag_id',
'associationForeignKey' => 'instytucja_id',
'unique'=> true
)
);
Instytucje model:
public $hasAndBelongsToMany = array(
'Tagi' =>
array(
'className' => 'Instytucje.Tagi',
'joinTable' => 'instytucje-tagi',
'with' => 'InstytucjeTagi',
'foreignKey' => 'instytucja_id',
'associationForeignKey' => 'tag_id',
'unique'=> true
)
);
If this doesn't fix it try using the afterFind() callback in the Tagi model to check what Cake is returning:-
afterFind($results, $primary = false) {
parent::afterFind($results, $primary);
// Print out the $results to check what Cake is returning.
debug($results);
return $results;
}
I have the following models: Attachment and PurchaseOrder hence the datatables attachments and purchase_orders.
In PurchaseOrder, I have
class PurchaseOrder extends AppModel {
public $hasMany = array(
'Pdf' => array(
'className' => 'Attachment',
'foreignKey' => 'foreign_key',
'conditions' => array(
'Pdf.model' => 'PurchaseOrder'
)
),
'Zip' => array(
'className' => 'Attachment',
'foreignKey' => 'foreign_key',
'conditions' => array(
'Zip.model' => 'PurchaseOrder'
)
),
In Attachment, I have the following:
public $belongsTo = array(
'PurchaseOrder' => array(
'className' => 'PurchaseOrder',
'foreignKey' => 'foreign_key',
'counterCache' => array(
'attachment_count' => array('Pdf.model' => 'PurchaseOrder'),
)
),
My problem is when I try to use $this->PurchaseOrder->Zip->save($data); I run into problem because the alias Pdf is not found.
How do I overcome this while maintaining the countercache behavior of updating the attachment_count inside purchase_orders?
Note that if a PurchaseOrder is associated with 3 Pdf Attachments and 2 Zip Attachments, the attachment_count should read 3.
I am using cakephp 2.4.2
I stopped using counterCache and used afterSave instead.
/**
* Called after each successful save operation.
*
* #param boolean $created True if this save created a new record
* #param array $options Options passed from Model::save().
* #return void
* #link http://book.cakephp.org/2.0/en/models/callback-methods.html#aftersave
* #see Model::save()
*/
public function afterSave($created, $options = array()) {
// update the PurchaseOrder based on pdf
if (isset($this->data['Pdf'])) {
$this->updatePurchaseOrderAttachmentCount($this->data);
}
}
/**
*
* #param Array $data where we expect key Pdf
*/
public function updatePurchaseOrderAttachmentCount($data) {
// check for Pdf
$pdfSet = isset($data['Pdf']);
if (!$pdfSet) {
throw new Exception('we expect Pdf as a key in your $data');
}
// check for foreign_key and model
$pdfFKSet = isset($data['Pdf']['foreign_key']);
$pdfModelSet = isset($data['Pdf']['model']);
if (!$pdfFKSet || !$pdfModelSet) {
throw new Exception('we expect foreign_key and model as keys in your $data["Pdf"]');
}
$count = $this->find('count', array(
'conditions' => array(
'model' => 'PurchaseOrder',
'type' => 'application/pdf',
'foreign_key' => $data['Pdf']['foreign_key'],
)
));
if (!is_numeric($count)) {
throw new Exception('we expect numeric in the $count');
}
$poData = array(
'PurchaseOrder' => array(
'id' => $data['Pdf']['foreign_key'],
'attachment_count' => $count,
)
);
return $this->PurchaseOrder->save($poData);
}
I know this post is very old, but I recently faced a similar issue and found another way to handle the same problem. You can continue using the counterCache approach with multiple counterCache, the only difference would be, you need to add you association on the fly, in the __construct method of your model.
public function __construct($id = false, $table = null, $ds = null) {
parent::__construct($id, $table, $ds);
/**
* When using Aliases, associations need to be added on the fly, otherwise, the CounterScope conditions would result in an SQL Error, during counterCache updates
*/
$this->bindModel(
array('belongsTo' => array(
'PurchaseOrder' => array(
'className' => 'PurchaseOrder',
'foreignKey' => 'foreign_key',
'counterCache' => array(
'attachment_count' => array($this->alias . '.model' => 'PurchaseOrder'),
'attachment_count' => array($this->alias . '.model' => 'PurchaseOrder')
)
)
)
)
);
}
I have question in cakephp model,
I want to add dynamic condition in var $hasMany keyword
I want to add condition like current user_id, i got user Id after my login.
var $hasMany = array(
"AskComment"=>array('limit'=>3),
'AskStatistic',
'AskContactsLink',
'AskStatistic',
'AskObject',
'AskLikes'
);
If you want to add dynamic condition in your model, then you might have to bind the model association-ship dynamically into your controller's code. Write the following code into your controller's method for which you want to impose some new condition on the existing/new associated models.
$this->PrimaryModel->bindModel(array('hasMany' => array(
'AskComment' => array(
'className' => 'AskComment',
'foreignKey' => 'primary_id',
'conditions' => array('AskComment.user_id' => $user_id)
)
)
));
Take a look at this link: Creating and destroying associations on the fly. This will surely help you to achieve the same.
I think its better to put your association in the construct function of your Model.
like this:
/**
* #see Model::__construct
*/
public function __construct($id = false, $table = null, $ds = null) {
public $hasMany = array(
'AskComment' => array(
'className' => 'AskComment',
'foreignKey' => 'primary_id',
'conditions' => array(
'AskComment.user_id' => $user_id,
),
),
);
}
I'm trying to use on the fly associations to trim down the data I retrieve, but the model I'm using is associated to other models with a re-named field because I have 2 of the same models associated with it.
So, here's the model, say 'test', that has two 'user' fields, both related to the User model.
In the model:
var $belongsTo = array(
'User' => array(
'className' => 'User',
'foreignKey' => 'user_id'
),
'User_Watched' => array(
'className' => 'User',
'foreignKey' => 'user_id_watched'
)
);
When I retrieve data related to 'test', I want to only retrieve particular data linked to the 'User' and 'User_Watched' fields without any other nested information.
But when I do:
$this->User->unbindModel(array('hasMany' => array('something1', 'something2')), false);
then something1 and something2 data does not show up for the 'User' field of model 'test', but is still retrieved for the 'User_watched' field.
Can I not retrieve unwanted data for the 'User_watched' field?
Hope this makes sense... :)
KcYxA,
Containable behavior might help a lot in this case, as benjamin mentioned, your "find" queries would look like:
$this->User->find('first', array(
'conditions' => array('User.id' => $id),
'contain' => array('UserWatched')
));
In this case, you won't have to use unbindModel method. In this example, you'll get User and UserWatched data.
If you need only User data from "find", then tell Cake to "$this->User->contain();" so it won't go further then User model.
to use on the fly associations to trim
down the data I retrieve
Good idea.
'foreignKey' => 'user_id_watched'
should possibly be:
'foreignKey' => 'user_watched_id'.
Edit 1: At least this would make sense according to my current understanding. If user_id is a correct foreign key(FK), which cakephp uses to unbind the relations, but user_id_watched isn't, than your described behavior is explained.
Edit 2: The Containable behavior gives you another tool for controlling associated models.
Change $primaryKey in fly, run controller
Sample:
// Models
//....
class PreProductoDescripcion extends AppModel {
/**
* Primary key field
*
* #var string
*/
public $primaryKey = 'id_producto_descripcion';
//....
//....
}
class SenasaPedidosDetalles extends AppModel {
/**
* Display field
*
* #var string
*/
public $displayField = 'cod_tango';
public $belongsTo = array(
'SenasaPedidos' => array(
'className' => 'SenasaPedidos',
'foreignKey' => 'senasa_pedidos_id',
'conditions' => '',
'fields' => '',
'order' => ''
),
'PreProductoDescripcion' => array(
'className' => 'PreProductoDescripcion',
'foreignKey' => 'cod_tango',
//'conditions' => array('SenasaPedidosDetalles.cod_tango' => 'PreProductoDescripcion.codigo'),
'fields' => '',
'order' => ''
)
);
//....
#
// Controller Fly
//...
$this->SenasaPedidos->Behaviors->load('Containable');
$this->SenasaPedidos->SenasaPedidosDetalles->PreProductoDescripcion->primaryKey = 'codigo';
$datos = $this->SenasaPedidos->find(
'first', array(
'fields' => array( 'SenasaPedidos.*' ),
'conditions' => array( 'SenasaPedidos.id' => $id ),
'contain' => array(
'Usuarios' => array(
'fields' => array( 'Usuarios.apellido_nombre' )
),
'Clientes' => array(
'fields' => array( 'Clientes.razon_social' )
),
'Provincias' => array(
'fields' => array( 'Provincias.nombre' )
),
'Transportes' => array(
'fields' => array( 'Transportes.razon_social' )
),
'SenasaPedidosDetalles' => array(
'fields' => array( 'SenasaPedidosDetalles.*' ),
'PreProductoDescripcion' => array(
'fields' => array(
'PreProductoDescripcion.id_producto_descripcion',
'PreProductoDescripcion.descripcion'
)
)
),
)
));
//...
I have the following model
class Comment extends AppModel {
var $useTable = "comments";
var $recursive = 1;
var $belongsTo = array(
'User' => array(
'className' => 'User',
'foreignKey' => 'userID'
)
);
function bindCommentsToUser() {
$this->bindModel(
array('belongsTo' => array(
'User' => array(
'className' => 'User',
'foreignKey' => 'userID'
)
)
)
);
}
The belongsTo variable at the top does absolutely nothing, I just cannot get it to work.
To confirm that the binding exists, I created the lower function to do dynamic binding which works perfectly. There appears to be no difference between the two. Is there some mistake that I am making or is there some setting somewhere else that has to be set?
There should be the same in both cases. You may want to create a ticket at http://cakephp.lighthouseapp.com. If possible change 'userID' to 'user_id' as recommended Travis Lleu. That will work for sure.