CakePhp: On the fly associations using a re-named Model field? - cakephp

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'
)
)
),
)
));
//...

Related

How we can add php code to model file in CAKE PHP

public $hasOne = array(
'Subscriber' => array(
'className' => 'Subscriber',
'foreignKey' => 'UserID',
'conditions' => array(
'Subscriber.end_date >=' => date('Y-m-d')
),
));
Here date('Y-m-d') gives html parse error. Even echo and print is not working in model file.
My aim is to get data from all subscribed users table till current date.
You can try like this,
public $hasOne = array(
'Subscriber' => array(
'className' => 'Subscriber',
'foreignKey' => 'UserID',
'conditions' => array(
'Subscriber.end_date >= date("Y-m-d")'
),
));
It will work as per your requirement

cake 2.5.1 bind 2 models together

I have a model Ranking which holds a contact_id and belongsTo Model Contact.
Model Contact has a costumer_id and belongsTo Model Costumer.
And hasMany Rankings.
There is also a Model Product which hasMany Ranking.
On a statistics page I select
$this->Product->recursive = 1;
$this->set('products', $this->Paginator->paginate())
;
and I get the array of
array(
'Product' => array(
'id' => '69',
),
'Ranking' => array(
(int) 0 => array(
'id' => '29',
'contact_id' => '9',
'product_id' => '69',
'ranking' => '9',
),
I would like to bind now the Contact and Costumer to the ranking based on the contact_id.
Is this manually possible via bindModel?
If yes, how can I do that?
I tried to set $this->Product->recursive = 1; to 2 and 3, but that select so many other things which I would need to clear with unbindModel... So I hope there is a smarter way of bind those model to get to the data...?
What you basically want to use is containable behavior. With this behavior you are able to filter and limit model find operations. You have the possibility to add this behavior on model level or at the controller to avoid side effects if the application has already grown to a complicated level.
Example from Cake-Book:
// Activate Containable Behavior on the fly in a controller
$this->User->Behaviors->load('Containable');
$this->User->contain();
$this->User->find('all', array(
'contain' => array(
'Profile',
'Account' => array(
'AccountSummary'
),
'Post' => array(
'PostAttachment' => array(
'fields' => array('id', 'name'),
'PostAttachmentHistory' => array(
'HistoryNotes' => array(
'fields' => array('id', 'note')
)
)
),
'Tag' => array(
'conditions' => array('Tag.name LIKE' => '%happy%')
)
)
)
));
Hope this gives you a push into the right direction.
using find it will get me the right data with this:
$this->set('products', $this->Product->find('all', array(
'contain' => array(
'Ranking' => array(
'Contact' => array(
'foreignKey' => 'contact_id',
'Customer' => array(
'foreignKey' => 'customer_id',
)
)
)
)
)));
When using the Paginator it looks like
$this->Paginator->settings['contain'] = array(
'Ranking' => array(
'Contact' => array(
'foreignKey' => 'contact_id',
'Customer' => array(
'foreignKey' => 'customer_id',
)
)
)
);
$this->Product->Behaviors->load('Containable');
$this->set('products', $this->Paginator->paginate());
Thanks so much!!

Associate different column name to one Model + cakephp

how to get name of (UserTransactionType.name) with Transaction.who_pay_fee_1,2,3 fields.
'user_transaction_type_id' works well but how to get the rest of fields work :(
//Transaction Model
public $belongsTo = array(
'UserTransactionType' => array(
'className' => 'UserTransactionType',
'foreignKey' => 'user_transaction_type_id',
'conditions' => '',
'fields' => '',
'order' => ''
),
//UserTransactionType Model
public $hasMany = array(
'Transaction' => array(
'className' => 'Transaction',
'foreignKey' => 'user_transaction_type_id',
'dependent' => false,
))
This is the sample code for your controller:
$this->UserTransactionType->find('all',array(
'fields' => array('name'),
'contain' => array('Transaction')
)
);
If Models are associated you can specify in 'contain' which of them you want to get in the result.
If you want to have only some fields of related Model, you can determine them after 'Transaction' in 'contain' just like in the regular find() query:
'contain' => array('Transaction' => array('fields' => array('field_1',
'field_2') ))
But in your case, you don't need to specify fields, because by default you get all fields.
So no matter if you define or not fields "who_pay_fee_1,2,3" because if you use 'contain' by default you will get foreing_key - user_transaction_type_id.
I hope it's helpful
For people they like CakePhp :)
in Controller ->
get the list of 'UserTransactionType'
in View ->
after looping trough all the transactions; in Transaction Status column simply load the 'UserTransactionType'array and assign the number of array to $userTransactionTypes.
$userTransactionTypes[$transaction['Who_pay_fee_1']];
To be honest it was straight forward but needed a bit concentration :)

Joining models in cake php

I have this NPO table which has one template. A template in turn has a theme. I want to retrieve which theme was selected by Npo.
I have following relation setup:
NPO - template on npo.id = template.npoid Template - theme on theme.id
= template.template_theme_id
And I am using:
$this->Npo->bindmodel(array(
'hasOne' => array(
'NpoTemplate' => array(
'className' => 'NpoTemplate'
)
)
), false);
$this->NpoTemplate->bindmodel(array(
'hasOne' => array(
'TemplateTheme' => array(
'className' => 'TemplateTheme',
'fields' => 'TemplateTheme.html'
)
)
), false);
$arrUserSite = $this->Npo->find('first', array(
'conditions'=> array(
'Npo.address' => $user
)
));
But it does not fetch anything from TemplateTheme. Instead it writes a seperate query for this table and does not consider it in the join.
I have set recursive level to 3
Please help. I don't really understand how the cake association works.
Regards
Himanshu Sharma
Try setting up your relationships in a single bindModel() call.
$this->Npo->bindmodel(array(
'hasOne' => array(
'NpoTemplate' => array(
'foreignKey' => false,
'conditions' => array(
'Npo.id = NpoTemplate.npoid'
)
),
'TemplateTheme' => array(
'foreignKey' => false,
'conditions' => array(
'NpoTemplate.template_theme_id = TemplateTheme.id'
)
)
)
));
$arrUserSite = $this->Npo->find('first', array(
'conditions' => array(
'Npo.address' => $user
)
));
You'll probably need to tweak the bindModel setup because I'm not 100% sure of your database structure. Good luck.

what is CakePHP model alias used for?

In user model:
var $hasMany = array(
'Photo' => array(
'className' => 'Photo',
'foreignKey' => 'owner_id',
...
),
);
In photo model:
var $belongsTo = array(
'Owner' => array(
'className' => 'User',
'foreignKey' => 'owner_id',
...
),
);
Here one user has many photos.
So what my question is that here the alias name is 'Owner', which make me clear to understand the exact meaning of 'User', but is this the only reason to use alias? does it affect 'Photo' in user model? or how to use 'Owner' in/by cakephp?
I don't quite understand the meaning of alias in model.
Appreciate your help!
Two useful scenarios for aliases:
1. Multiple foreign keys to the same model
For example, your photos table has two fields: created_user_id & modified_user_id
var $belongsTo = array(
'CreatedUser' => array(
'className' => 'User',
'foreignKey' => 'created_user_id',
...
),
'ModifiedUser' => array(
'className' => 'User',
'foreignKey' => 'modified_user_id',
...
),
);
2. Creating logical words specific to your application's domain
Using the conditions field in the array, you could specify different kinds of models:
var $hasMany = array(
'ApprovedUser' => array(
'className' => 'User',
'foreignKey' => 'group_id',
'conditions' => array(
'User.approved' => 1,
'User.deleted' => 0
),
...
),
'UnapprovedUser' => array(
'className' => 'User',
'foreignKey' => 'group_id',
'conditions' => array(
'User.approved' => 0,
'User.deleted' => 0
),
...
),
'DeletedUser' => array(
'className' => 'User',
'foreignKey' => 'group_id',
'conditions' => array('User.deleted' => 1),
...
),
);
In the above example, a Group model has different kinds of users (approved, unapproved and deleted). Using aliases helps make your code very elegant.
It allows you to do things like $this->Owner->read(null,$userId); You can have an OwnersController and views/owners.
It is ... an alias. In a sense, User is an alias for the db table users.
A better example: I have a CMS where I use the table articles for Article, BlogItem and News. Those three names are aliases for the same table that allow me to set up different models, relationships and behaviour. So I have a BlogItemsController and a NewsController as well as an ArticlesController.

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