I have simple model relationship in CakePHP 1.3 with Categories -> Products
Category hasMany Products
There is slight difference between the data arrays which I get in the different controllers. The Product data is in the main product array when getting as associated model in the Categories controller and is separated when getting it in Products.
For Example to get 'Product1'
in Categories - $category['Product'][0]['title']
and in Products - $product[0]['Product']['title']
I would like to use same element for displaying the products. It does not matter which array scheme will be used just to be the same. And where is the right place to make the modification? I can modify those arrays after getting them, but don't think that it is the best option.
When I am in the Categories controller and get a category I get this:
// $this->Category->findById('12');
Array
(
[ProductCategory] => Array
(
[id] => 12
[title] => Category 1
[updated] => 2013-02-24 10:06:15
[created] => 2013-02-24 10:06:15
)
[Product] => Array
(
[0] => Array
(
[id] => 4
[parent_id] => 12
[title] => Product1
[updated] => 2013-02-24 10:17:01
[created] => 2013-02-24 09:12:59
)
[1] => Array
(
[id] => 6
[parent_id] => 12
[title] => Product2
[updated] => 2013-02-24 10:16:54
[created] => 2013-02-24 09:13:53
)
)
And when getting all the products inside the Products controller:
// $this->Product->find('all');
Array
(
[0] => Array
(
[Product] => Array
(
[id] => 10
[parent_id] => 12
[title] => Product1
[updated] => 2013-02-24 10:16:42
[created] => 2013-02-24 09:16:35
)
)
[1] => Array
(
[Product] => Array
(
[id] => 8
[parent_id] => 12
[title] => Product2
[updated] => 2013-02-24 10:16:47
[created] => 2013-02-24 09:15:39
)
)
)
)
One of your finds is a find('all') and the other is a findById() (which uses find('first')).
Both of these return data in a different format, since find('first') knows you only want one item, and find('all') is an unknown set of item(s).
Just use find('all') for both, but set your limit based on whether you need only one or more than one. Then, your data will be returned exactly the same.
Which Controller you retrieve your data from has no effect on the data returned. Which MODEL however, does - so just make sure you're doing your find from the same model.
Eg.
//in your ProductsController
$this->Product->find('all');
//in your CategoriesController
$this->Category->Product->find('all');
// in some other controller
$this->loadModel('Product);
$this->Product->find('all');
PS - BUT it's better if you don't do your "finds" in your Controller - make a method in your Model, and call it from your Controller(s) so instead of $this->Product->find(), it would be $this->Product->getProducts() (or whatever you want to call it). (read more about "fat models, skinny controllers" for reasons/examples...etc).
Dave is right, the difference is the method you're using... Even though you claim that associated data is always merged, your find on the 'Product' model is NOT associated data, so the format WILL always be different.
I've been here for a short while and I've already noticed that Dave knows his stuff. :)
I agree with the fat models/skinny controllers paradigm for clean, efficient code.
If you changed:
<?php
$this->Category->contain(array(
'Product'
));
$this->Category->find('all',
array(
'conditions' => array(
'Category.id' => $id // 12 for your OP.
),
'limit' => 1
)
);
?>
Should give you:
<?php
array
(
[0] => array
(
'Category' => array
(
[id] => 12
[title] => Category 1
[updated] => 2013-02-24 10:06:15
[created] => 2013-02-24 10:06:15
),
'Product' => array
(
[0] => array
(
...
),
[1] => array
(
...
)
)
)
)
?>
Please correct me if I am mistaken, thanks!
Or if you want "Products" to look like:
<?php
'Product' => array
(
[0] => array
(
'Product' => array
(
...
)
)
)
?>
when fetching data from the category model, you would need to fetch the associated data manually, e.g.:
<?php
$this->Category->contain();
$cats = $this->Category->find('all');
foreach ($cats as &$cat) {
$this->Category->Product->contain(); // You have to contain for each find.
$cat['Product'] = $this->Category->Product->find('all',
array(
'conditions' => array(
'Product.category_id' => $cat['Category']['id']
)
)
);
}
?>
Related
I have three Models in cakephp
//Union
public $hasMany = 'Member';
and
//Member
public $hasOne = 'Post';
where as post contains post names
Now the problem is when I use:
$this->Union->findById(1);
in Union controller it shows linked Members but not name of posts
[Union] => Array
(
[id] => 1
[Name] => Dawa vyapar mandal
[created] => 2014-03-31 14:08:12
)
[Member] => Array
(
[0] => Array
(
[id] => 1
[Name] => Ashish
[post_id] => 1
[union_id] => 1
[created] => 2014-03-31 14:11:02
)
[1] => Array
(
[id] => 2
[Name] => Ashu
[post_id] => 1
[union_id] => 1
[created] => 2014-07-01 15:01:15
)
)
)
so how to achieve Post Model inside Member Model?
You have to make the model to be recursive to the level upto which you need data.
In your case, you need the data upto 2nd level, so make recursive as -
$this->Union->recursive = 2;
And after that find your data -
$this->Union->findById(1)
I have 3 users tables on my DB:
Users
users_twitter
users_web
Users is the parent of both users_twitter and users_web.
And then another table for comments. Both kind of users can comment.
So, when I want to show the comments I need to get information of the author of each comment.
In order to do this I am using the variable $belongsTo on the /Model/Comment.php like this:
public $belongsTo = array(
'users' => array(
'foreignKey' => 'idUser'
)
);
In Controller/CommentController, when i do this:
public function index($idPost) {
$this->Comment->recursive = 0;
return $this->Comment->find('all');
}
I get this kind of array:
[0] => Array
(
[Comment] => Array
(
[id] => 1
[idPost] => 441
[idUser] => 387371023
[comment] => hello word
[created] => 2012-03-01 00:00:00
)
[User] => Array
(
[id] => 1
[username] => myname
)
)
And what I want is to get more info yet, the one of the subtype of Users, depending on the existence of the ID on the subtype tables.
In case it was an id of a user_web table, I would like to get this:
[0] => Array
(
[Comment] => Array
(
[id] => 1
[idPost] => 441
[idUser] => 387371023
[comment] => hello word
[created] => 2012-03-01 00:00:00
)
[User] => Array
(
[id] => 1
[username] => myname
[users_web] => Array
(
[id] => 1
[username] => myName
[password] => XXXXX
[verified] => 1
[created] => 1
)
)
Do you know if that's possible with CakePHP?
As far as I know, with $hasOne I only get one level more, I need two.
In your AppModel add
public $actsAs = array('Containable');
In your index:
public function index($idPost) {
return $this->Comment->find('all', array(
'contain' => array('User.UsersWeb')));
}
Your User model has to be associated with a UsersWeb model to make this work.
See http://book.cakephp.org/2.0/en/core-libraries/behaviors/containable.html#containing-deeper-associations for a complete description.
Also why do you return the data in the controller index? Are you using requestAction for this? And why don't you use pagination? Do you really want to display hundreds of comments on one page?
See http://book.cakephp.org/2.0/en/core-libraries/components/pagination.html
Imagine I have 2 models: Item and Category. Category hasMany Items and Item belongsTo Category.
I would like to obtain an array "reversed" on how cakephp normally return it: Usually I get something like
[Item]
...some props...
[Category]
...some props...
While I want something like:
Array
[0][Category]
Array
[0][Item]
...some props...
[1][Item]
[1][Category]
...and so on
How can I obtain this result with find method if possible? Otherwise, how to obtain it?
My current model is much more complex but I think I could apply this teory to all my models (I have a Category => Group => Item relationship).
Thanks for suggestions and answers.
According to the title of your question, if the point is to get only Items that are linked to categories named 'bla', you can just call the find() method on the Category model instead of the Item model.
Instead of
$this->Item->find('all', array('conditions' => array('Category.name' => 'bla')));
do
$this->Item->Category->find('all', array('conditions' => array('Category.name' => 'bla')));
This way it will first filter the corresponding Categories and then get the linked Items. So you will obtain something like
Array
(
[0] => Array
(
[Category] => Array
(
[id] => 1
[name] => bla
...
)
[Item] => Array
(
[0] => Array
(
[id] => 1
...
)
[1] => Array
(
[id] => 2
...
)
)
)
)
EDIT
With three models linked together, it is a bit more complicated. The only solution I can think of to prevent loading a lot of data is to build a query with INNER JOINs:
$categories = $this->Category->find('all', array('fields' => array('Category.id', 'Category.name', 'Item.id', 'Item.name'),
'joins' => array(
array( 'table' => 'groups',
'alias' => 'Group',
'type' => 'inner',
'conditions' => 'Group.category_id = Category.id'
),
array( 'table' => 'items',
'alias' => 'Item',
'type' => 'inner',
'conditions' => array('Item.group_id = Group.id', 'Item.name' => 'bla')
))));
It will return an array like this:
Array
(
[0] => Array
(
[Category] => Array
(
[id] => 2
[name] => Shop
)
[Item] => Array
(
[id] => 1
[name] => Bla
)
)
)
EDIT2
A last word about the structure of the array you'll get: it is not exactly like you wanted. The Item array is at the same level that the Category array. So you may end up with many pairs of Category-Item for the same Category.
But a simple foreach loop would then allow you to build an array with the exact struture you wish and this query has the advantage to get only what is neccessary from the database.
I would like to save several records for one model. This would have been done pretty easily with saveAll() if it hadn't been for a problem:
I have a notification form, where I select multiple users from a <select> and two fields, for subject and content respectively. Now, when I output what $this->data contains, I have:
Array([Notification] => Array
(
[user_id] => Array
(
[0] => 4
[1] => 6
)
[subject] => subject
[content] => the-content-here
)
)
I've read on Cake 1.3 book, that in order to save multiple records for a model, you have to have the $this->data something like:
Array([Article] => Array(
[0] => Array
(
[title] => title 1
)
[1] => Array
(
[title] => title 2
)
)
)
So, how do I 'share' the subject and content to all selected users?
First off, this database design needs to be normalized.
It seems to me like a Notification can have many Users related to it. At the same time, a User can have many Notifications. Therefore,
Introduce a join table named users_notifications.
Implement the HABTM Relationship: Notification hasAndBelongsToMany User
In the view, you can simply use the following code to automagically bring up the multi-select form to grab user ids:
echo $this->Form->input('User');
The data that is sent to the controller will be of the form:
Array(
[Notification] => Array
(
[subject] => subject
[content] => contentcontentcontentcontentcontentcontent
),
[User] => Array
(
[User] => Array
(
[0] => 4
[1] => 6
)
)
)
Now, all you have to do is called the saveAll() function instead of save().
$this->Notification->saveAll($this->data);
And that's the Cake way to do it!
Those values have to be repeat like this
Array([Notification] => Array(
[0] => Array
(
[user_id] => 4
[subject] => subjects
[content] => content
)
[1] => Array
(
[user_id] => 6
[subject] => subject
[content] => contents
)
)
)
$this->Notification->saveAll($data['Notification']); // should work
If you don't pass any column value, this cake will just ignore it
You're going to have to massage your form's output to suit Model::saveAll. In your controller:
function action_name()
{
if ($this->data) {
if ($this->Notification->saveMany($this->data)) {
// success! :-)
} else {
// failure :-(
}
}
}
And in your model:
function saveMany($data)
{
$saveable = array('Notification'=>array());
foreach ($data['Notification']['user_id'] as $user_id) {
$saveable['Notification'][] = Set::merge($data['Notification'], array('user_id' => $user_id));
}
return $this->saveAll($saveable);
}
The benefit here is your controller still knows nothing about your model's schema, which it shouldn't.
In fact, you could probably redefine saveAll in your model, which hands off correctly formatted input arrays to parent::saveAll, but handles special cases itself.
There might be a more cakey way of doing this, but I've used this kind of technique: First, change the form so that you get an array like this:
Array(
[Notification] => Array
(
[subject] => subject
[content] => contentcontentcontentcontentcontentcontent
),
[selected_users] => Array
(
[id] => Array
(
[0] => 4
[1] => 6
)
)
)
(Just change the multiselect input's name to selected_users.id)
Then loop through the user ids and save each record individually:
foreach( $this->data[ 'selected_users' ][ 'id' ] as $userId ) {
$this->data[ 'Notification' ][ 'user_id' ] = $userId;
$this->Notification->create(); // initializes a new instance
$this->Notification->save( $this->data );
}
Basically I have following models in CakePHP:
User(id, username)
Photo(id, user_id, path)
I have set up following relation: User hasMany Photo.
On one screen, I would like to list users, and show random photo next to each user. I tried setting up following relation:
User hasOne SamplePhoto (where SamplePhoto is just Photo model)
but when user has two photos for instance, he is listed twice on the list.
basically my question is: can you reduce hasMany relation to hasOne, without adding any fields to table schema presented above? I would like to tell cake - find the first record in the Photo table which matches a certain user_id.
You could also use the Containable behaviour and then set up something like:
$this->User->find(
'all',
array(
'contains' => array(
'Photo' => array(
'order' => 'rand()',
'limit' => 1
)
)
)
);
You should then get something like
Array
(
[User] => Array
(
[id] => 121
[username] => tom
)
[Photo] => Array
(
[0] => Array
(
[id] => 123
[user_id] => 121
[path] => Somewhere
)
)
)
if you do a find like $this->User->read(null,$id), the return will be an array that looks something like:
Array
(
[User] => Array
(
[id] => 121
[username] => tom
)
[Photo] => Array
(
[0] => Array
(
[id] => 123
[user_id] => 121
[path] => Somewhere
)
[1] => Array
(
[id] => 124
[user_id] => 121
[path] => SomeOtherPlace
)
)
)
From this array you can pick the photo however you like, be it the first:
$this->data['Photo'][0]
the last:
$this->data['Photo'][count($this->data['Photo'])]
an explicit record:
$this->data['Photo'][3]
or by some random means:
$this->data['Photo'][$rnd]
Don't make this more complicated than it needs to be. :)
$data = $this->User->Photo->find('first',
array('conditions' => array('Photo.user_id' => $id)));
Gives you a photo in $data['Photo'] with the user attached in $data['User'].
You'd do something like:
$user = $this->User->find('first', array('conditions' =>
array('username'=>$this->data['User']['username'],
'active'=>true) ));