How to find data through foreign key in cakephp? - php

Question

Product Plan ProductPlan
id |name id |name id | product_id | plan_id
1 aplha 1 a 1 1 2
2 bravo 2 b
3 charlie
I want to find Product name and Plan name against ProductPlan, if product id and plan id for product exist in ProductPlan then the name of plan and product will show, I tried a lot, the relation b/w tables are correct but i didn't get the exact data, query which i used that is
$p_plan = $this->ProductPlan->find('all',array(
'conditions'=>array(
'ProductPlan.product_id'=>'Product.product_id'
)
)
);
$this->set('p_plan', $p_plan);
if some body help me , i'll very thaksful to him. Thanks in advance.
Relation
For Plan
class Plan extends AppModel{
public $primaryKey='plan_id';
public $hasMany = array(
'ProductPlan'=>array(
'className' => 'ProductPlan',
'foreignKey' => 'plan_id'
)
);
Product
class Product extends AppModel{
public $primaryKey='product_id';
public $hasMany = array(
'ProductsUser'=>array(
'className' => 'ProductsUser',
'foreignKey' => 'product_id'
),
'ProductsUserNode'=>array(
'className' => 'ProductsUserNode',
'foreignKey' => 'product_id'
),
'ProductPlan'=>array(
'className' => 'ProductPlan',
'foreignKey' => 'product_id'
)
);
for Product Plan
class ProductPlan extends AppModel{
var $primaryKey='product_plan_id';
public $belongsTo = array(
'Product' => array(
'className' => 'Product',
'foreignKey' => 'product_id'
),
'Plan' => array(
'className' => 'Plan',
'foreignKey' => 'plan_id'
)
);
public $hasMany = array(
'ProductPlansUserNode'=>array(
'className' => 'ProductPlansUserNode',
'foreignKey' => 'product_plan_id'
),
);
}

Answer 1

You should simply be able to use 'contain':-
$p_plan = $this->Product->find('all', array(
'contain' => array('Plan')
));
This will return all your products, with their associated plans. Your Product and Plan models need a hasAndBelongToMany relationship. There is no need to define a model for your joins table.
class Product AppModel {
...
public $hasAndBelongsToMany = array('Plan');
...
}
class Plan AppModel {
...
public $hasAndBelongsToMany = array('Product');
...
}
As a side note I'd personally avoid overriding CakePHP's default way of handling primary keys. It is better to stick with convention and use id.