I have Categories associated to many Products but a Product can only have one category.
In my Category view, I have a list of all products assign to that particular category and outputted into a table. I'm trying to paginate this table, since it can easily grow in size.
My CategoriesController, View action:
public function admin_view($id=null) {
if (!$id) {$this->redirect('/admin/categories');}
$category = $this->Category->find('first', array(
'conditions' => array(
'Category.id' => $id
),
'contain' => array('Product')
));
if(!$category) {
$this->redirect('/admin/categories');
} else {
$this->set('category', $category);
}
Category Model: public $hasMany = array('Product');
Product Model:
public $belongsTo = 'Category';
This outputs the data with a Category array with all the Category data and a Products array with all the Products associated with this particular Category:
Question: How can I paginate the Products list that I have as a table in my Categories Admin_View view?
$this->Paginator->settings = array(
'conditions' => array(
'Category.id' => $id
),
'contain' => array('Product'),
'limit' => 25
);
$category = $this->paginate('Category');
Related
Hi I have a database where i use a link table to link products and categories.
The relationships look like this:
Product ProductCategories Category
Id Id Id
Name ProductId Name
CategoryId
So the productCategory table links Products to Categories
My problem is when im trying to find all Products under the category with the Id of 1
I use this code but it doesnt seem to be working:
$models = Products::model()->with('productcategories')->findByPk(1);
This is the Products Relationships:
public function relations()
{
return array(
'productcategories' => array(self::HAS_MANY, 'Productcategories', 'ProductId'),
);
}
public function relations()
{
return array(
'productcategories' => array(self::HAS_MANY, 'Productcategories', 'ProductId'),
'Categories' => array(self::HAS_MANY, 'Category', '',
'through'=>'productcategories',
'on' => 'Categories.Id = productcategories.CategoryId',
),
);
}
// Get all Product with a Category with id = 1
$models = Products::model()->with('Categories')->findAll('Categories.Id = 1');
My Category Model:
class Category extends AppModel {
public $displayField = 'name';
// public $actsAs = array('Containable');
public $hasAndBelongsToMany = array(
'Post' => array(
'className' => 'Post',
'joinTable' => 'categories_postss',
'foreignKey' => 'category_id',
'associationForeignKey' => 'post_id',
'unique' => 'keepExisting'
)
);
}
$params['contain'] = array('Post' => array(
'limit'=> 3));
pr($this->Category->find('first',$params)); exit;
It is fetching all Posts, irrespective of limit.
What I want to do:
I have this page where I ma listing all the categories and latest 5 posts related to it.
I want to limit the associated model to only 5 rows.
Any ideas?
Containable behavior is not in use
The most likely reason for this problem is that the containable behavior is not being used at all.
Compare, for the below code example:
$results = $this->Category->find('first', array(
'contain' => array(
'Post' => array(
'limit' => 3
)
)
));
Without containable behavior, it'll generate the following queries:
SELECT ... FROM `crud`.`categories` AS `Category` WHERE 1 = 1 LIMIT
SELECT ... FROM `crud`.`posts` AS `Post`
JOIN `crud`.`categories_posts` AS `CategoriesPost` ON (...)
With containable behavior, it'll generate the following queries:
SELECT ... FROM `crud`.`categories` AS `Category` WHERE 1 = 1 LIMIT
SELECT ... FROM `crud`.`posts` AS `Post`
JOIN `crud`.`categories_posts` AS `CategoriesPost` ON (...) LIMIT 3
Given this (and the code in the question) check that the AppModel has the containable behavior in $actsAs:
<?php
// app/Model/AppModel.php
class AppModel extends Model {
public $actsAs = array('Containable');
}
Limit always required?
Alternatively, or possibly in addition, you may prefer to put a limit in the association definition - To do so just define the 'limit' key:
class Category extends AppModel {
public $hasAndBelongsToMany = array(
'Post' => array(
'limit' => 100, // default to a high but usable number of results
)
);
}
the hasAndBelongsToMany relationship seems unnecessary to me. I think you only need Category hasMany Post and Post belongsTo Category relationships. Add category_id to the posts table. Make both models actAs containable.
Post Model
class Post extends AppModel {
public $actsAs = array('Containable');
var $belongsTo = array(
'Category' => array(
'className' => 'Category',
'foreignKey' => 'category_id'
),
// ... more relationships
);
Category Model
class Category extends AppModel {
public $actsAs = array('Containable');
var $hasMany = array(
'Post' => array(
'className' => 'Post',
'foreignKey' => 'category_id'
),
// ... more relationships
);
Categories Controller
class CategoriesController extends AppController {
public $paginate = array(
'Category' => array(
'contain' => array(
'Post' => array(
'limit' => 3
), // end Post
) // end Category contain
) // end Category pagination
); // end pagination
public function index() {
// for paginated results
$this->set('categories', $this->paginate());
// for find results
$this->Category->contain(array(
'Post' => array(
'limit' => 3
)
));
$this->set('categories', $this->Category->find('all'));
}
Model box
public $hasMany = array('Ticket' => array(
'className' => 'Ticket',
'order' => 'Ticket.created DESC',
'foreign_key' => 'box_id'
));
Model Ticket
public $belongsTo = 'Box';
In BoxesController I get data from box table
$this->set('boxes', $this->Box->find('all'));
This function get all data from table Box and from table Ticket.
How can I get data only from one table, without join other tables?
$this->Box->recursive = -1;
$this->set('boxes', $this->Box->find('all'));
or
$this->Box->unbindModel(
array('hasMany' => array('Ticket'))
);
$this->set('boxes', $this->Box->find('all'));
More on recursive
I have a site develop in cakephp 2.0
I want to make a HABTM relation to the same model: A product can has more products.
I thinked to do in this mode into my model:
class Product extends AppModel {
public $name = 'Product';
public $useTable = 'products';
public $belongsTo = 'User';
public $actsAs = array('Containable');
public $hasAndBelongsToMany = array(
'Ingredient' => array(
'className' => 'Product',
'joinTable' => 'ingredients_products',
'foreignKey' => 'product_id',
'associationForeignKey' => 'ingredient_id',
'unique' => true
)
);
}
Is correct my relation? But have I to insert into my table products the field product_id and ingredient_id?
And how can I save my data with a form? I know how to save data with HABTM but I never done an HABTM to the same table.
Your relation is fine. What you have written will create a Product Model that can have any number of Ingredients and allows an Ingredient to belong to any number of Products.
When saving, you must simply treat the Ingredient as if it were another Model. The CakePHP example on saving HABTM works just as well as for associating the same model as with 2 different models: http://book.cakephp.org/2.0/en/models/saving-your-data.html.
So, if you're saving multiple Ingredients to a Product, your Array structure will look like this:
Array(
[0] => Array(
Product => Array(
id => 1
),
Ingredient => Array(
id => 18
)
),
1 => Array(
Product => Array(
id => 1
),
Ingredient => Array(
id => 23
)
)
// ...
)
It is up to you how you capture this in a form, but the form example used in the link provided above should manage this properly.
Ok this is kind of hard to explain but I'll try my best.
I have 3 tables
companies products product_availabilities
--------- -------- ----------------------
id id id
name name company_id
product_id
buys (tinyint)
sells (tinyint)
And their models
class Company extends AppModel
{
public $name = 'Company';
public $hasMany = array(
'ProductAvailability'
);
class Product extends AppModel
{
public $name = 'Product';
public $hasMany = array(
'ProductAvailability'
);
class ProductAvailability extends AppModel
{
public $name = 'ProductAvailability';
public $belongsTo = array(
'Company',
'Product'
);
}
What I want to do is when I create a company, I want to be able to select products that the company buys or sells. I've seen an example of a hasMany through relationship in the book (http://book.cakephp.org/1.3/view/1650/hasMany-through-The-Join-Model) but they are creating the form from the "join table" controller. Is it possible to bind the productAvailability model to my company model to be able to select the products while creating the company?
Edit : Here is how I've done it. I know it is not optimal as there is a lot of looping involved but it works.
Company controller :
$products = $this->Company->ProductAvailability->Product->find('list', array('fields' => array('Product.id', 'Product.label')));
$this->set('products', $products);
if($this->request->is('post')){
if($this->Company->save($this->request->data)){
foreach($products as $product)
{
$tmpArray = array(
'company_id' => $this->Company->id,
'product_id' => $product['Product']['id']
);
foreach($this->request->data('BuyProducts.product_id') as $buyProduct)
{
if($buyProduct == $product['Product']['id'])
$tmpArray['buys'] = 1;
}
foreach($this->request->data('SellProducts.product_id') as $sellProduct)
{
if($sellProduct == $product['Product']['id'])
$tmpArray['sells'] = 1;
}
if(count($tmpArray) > 2)
{
$this->Company->ProductAvailability->create();
$this->Company->ProductAvailability->set($tmpArray);
$this->Company->ProductAvailability->save();
}
}
$this->Session->setFlash('Yay', 'success');
$this->redirect(array('action' => 'index'));
} else {
$this->Session->setFlash('Nay', 'error');
}
}
Company add form :
<?php echo $this->Form->create('Company'); ?>
<?php echo $this->Form->input('name', array( 'div' => 'full-form')); ?>
<?php echo $this->Form->input('BuyProducts.product_id', array('multiple' => 'checkbox', 'options' => $products, 'div' => 'full-form', 'label' => false)); ?>
<?php echo $this->Form->input('SellProducts.product_id', array('multiple' => 'checkbox', 'options' => $products, 'div' => 'full-form', 'label' => false)); ?>
<?php echo $this->Form->end(array('label' => __('Save'), 'div' => 'center', 'class' => 'bouton-vert')); ?>
You have two options. Either let cakePHP do some magic with the hasAndBelongsToMany relationship or doing it manually which is necessary if you add attributes to the join table
1. CakePHP HABTM
Using the capabilities of CakePHP and making a straight forward solution I would make these changes:
Model
If one company has more than one product, and the products belong to many companies. It is a hasAndBelongsToMany relationship between Company<->Product
// company.php
...
var $hasAndBelongsToMany = array(
'Product' => array(
'className' => 'Product',
'joinTable' => 'companies_products',
'foreignKey' => 'company_id',
'associationForeignKey' => 'product_id',
'unique' => true,
)
);
...
// similar in product.php
Add the required table 'companies_products' in the database.
Controller
Then in the add function from the Company Controller there should be something like:
$products = $this->Company->Product->find('list');
$this->set(compact('products'));
View
Finally insert the products in the add.ctp, the select should allow multiple selections and let cakePHP do some magic, like this:
echo $this->Form->input('products', array(
'label' => 'Products to buy (Ctr+multiple choice)'
'type' => 'select',
'multiple' => true,
));
2. Manually
When the HABTM becomes more 'exotic' and includes some attributes like in your case 'buy' or 'sell' you need to do the manual way. This is in the Product Controller setting manually the fields before inserting them in the database. Something like:
foreach($availableProducts as $availableProduct ){
$this->Product->ProductAvailabilities->create();
$this->Product->ProductAvailabilities->set( array(
'company_id' => $this->Product->id,
'product_id' => $availableProduct['Product']['id'],
'buys' => $availableProduct['Product']['buy'],
'sells' => $availableProduct['Product']['sell']
// or however you send it to the controller
));
$this->Product->ProductAvailabilities->save();
}
Let's hope this helps you ...
you are planning a habtm-relationship (m:n) with the possibility to have extra fields in the join table. Even though this can be done with regular habtm I prefer the way you choose and implement the m:n as 1:n:1, which is simply the same and gives you more options when saving your data.
Here is a similar question and answer
As for your question: You can collect the the data from your products table like this:
$this->Company->ProductAvailability->Product->find('all', $params);
Also you might want to have a look at the containable-behaviour which is very useful for this use case:
$params['conditions'] = array(
'Company.id' => $id
);
$params['contain'] => array(
'ProductAvailability' => array(
'conditions' =>array(
'buys' => 1
),
'Product' => array(
'order' => array(
'name' => 'ASC'
)
)
)
);
$this->Company->find('all', $params);