When I search a model which "has many" of something else.
For example a blog post has many categories.
When searching for blog post with categories associated, how do I order the associated categories? When the array is returned it ignores the order on the category model and defaults to it's usual id order.
Cheers.
In addition you can set the order in your model's relation.
<?php
class Post extends AppModel {
var $hasMany = array(
'Category' => array(
'className' => 'Category',
...
'order' => 'Category.name DESC',
....
),
}?>
in cakephp 3 use 'sort' instead of 'order':
<?php
class Post extends AppModel {
var $hasMany = array(
'Category' => array(
'className' => 'Category',
...
'sort' => 'Category.name DESC',
....
),
}?>
You can do this with the ContainableBehavior:
$this->Post->find('all', array('contain' => array(
'Category' => array(
'order' => 'Category.created DESC'
)
)));
http://book.cakephp.org/view/1325/Containing-deeper-associations
You can specify the order attribute of the find method parameters. Otherwise, it will default to the order for the top-most/parent Model. In your case the Category.id.
Sorting by columns in associated models requires setting sortWhitelist.
$this->paginate['order'] = [ 'Fees.date_incurred' => 'desc' ];
$this->paginate['sortWhitelist'] = ['Fees.date_incurred', 'Fees.amount'];
$this->paginate['limit'] = $this->paginate['maxLimit'] = 200;
Related
I just cant get data from 2 tables in a HABTM relationship and I cant get the answer for these cakephp docs (again). Sorry for asking the question on something that should be explained in the docs.
This should be a simple but I keep getting undefined index and the relationship I set up seems in accordance with the docs. I have another post on a more complicated matter but this issue needs to be isolated .
I dont know how to get related data from the lessons table and the students table via this lessons-students HABTM table.
I want all the lessons a student does. I want the name of the student from the student table and lesson details from the lesson table which has lesson_id as the common link in this lessons-students table. Sounds simple but I cant do it.
public $hasAndBelongsToMany = array(
'Student' => array(
'className' => 'Student',
'joinTable' => 'lessons_students',
'foreignKey' => 'lesson_id',
'associationForeignKey' => 'student_id',
'unique' => 'keepExisting',
)
);
class LessonsController extends AppController {
....
$this->Lesson->recursive = -1;
$options['joins'] = array(
array('table' => 'lessons_students',
'alias' => 'LessonsStudent',
'type' => 'LEFT',
'conditions' => array(
'Lesson.id = LessonsStudent.lesson_id',
)
),
array('table' => 'students',
'alias' => 'Student',
'type' => 'LEFT',
'conditions' => array(
'LessonsStudent.student_id=Student.id',
)
),
);
$options['conditions'] = array('Student.id' => 2);
// $Item->find('all', $options);
$student=$this->set( 'student',$this->Lesson->find('all', $options));
In the view I get the error undefined index Student
<?php
// debug($student);
foreach ($student as $item2):
echo '<td>'. $item2['Lesson']['id'].'</td>';
echo '<td>'. $item2['Student']['id'].'</td>';
http://stackoverflow.com/questions/17250215/cant-get-all-user-data-from-habtm-in-cakephp
http://book.cakephp.org/2.0/en/models/associations-linking-models-together.html#hasandbelongstomany-habtm
If you want to use model association you need to remove $this->Lesson->recursive = -1; because it disable any associations defined in model. And than you can remove $options['joins'].
If you have defined many association in your Lesson model and don't want to fetch all of it use unbindModel() or use Containable behavior
$this->Lesson->Behaviors->load('Containable');
$this->Lesson->contain('Student');
If you need to do find many times in many actions it's better to enable Containable in model itself
class Lesson extends AppModel {
public $actsAs = array('Containable');
}
so you can avoid $this->Lesson->Behaviors->load('Containable'); line;
I have a problem with nested model pagination using containable in Cake...
I've got three models: Category, CompanyCategory, Company and there association is like this
Category hasMany CompanyCategory
CompanyCategory belongsTo Category
CompanyCategory belongsTo Company
Company hasMany CompanyCategory
I get data using contain, as shown below:
$options = [
'conditions' => ['Category.slug' => $slug],
'contain' => [
'CompanyCategory.Company.CompanyAddress'
]
];
return $this->find('first', $options);
Everything works properly, until I wanted to paginate the nested model - Company. I use CategoriesController with show method, which renders the view with the selected category and associated companies (Company hasMany Categories and Category hasMany Companies).
I've tried something like this:
$this->Paginator->settings = [
'limit' => 1,
'order' => [
'id' => 'asc'
],
'contain' => array('CompanyCategory.Company')
];
$data = $this->Paginator->paginate('Category.CompanyCategory.Company', array('Category.slug LIKE' => $slug));
$this->set('category', $data);
But this didn't work for me :(
Any suggestions / help?
If you define Category has a hasAndBelongsToMany relation, it would be easy for you. Thus you created a new Model called CompanyCategory, i assume there is a reason..
You can try this-
$this->Category->bindModel(
array(
'hasAndBelongsToMany' => array(
'Company'
)
)
);
$this->Paginator->settings = array(
'conditions' => array(
'Category.slug' => $slug
),
'limit' => 1,
'order' => array(
'id' => 'asc'
),
'contain' => array(
'Company'
)
);
I assume your relation table name is categorys_companies.... If not then you need take different approach
Finnaly I resolve my problem using
$this->Paginator->settings = array(
'limit' => 2,
);
$this->Paginator->paginate('Category.CompanyCategory.Company');
I forgot to write that I use method from CategoriesController, not Companies.
But now another problem blocked me... I use TranslateBehaviour, and data which I get has no translations...
Any idea? I googled a lot, but couldn't find any satisfactory solution.
hi guys i am new to cakephp
now i'm facing a little big problem
here is the situation
i hava a shop that hasMany Catalogs which is related to many products each product has a category
i want to fetch them all just by getting the shop
i dont know how to do it
trying to use hasMAny gives me just the ids
instead is there any way to get shop inside it array of catalogs each catalog has Product's array which has one array of category
thank you
Ok, I'm on my computer now :).
In ShopModel:
class ShopModel extends AppModel {
public $hasMany = array(
'Catalog' => array(
// binding params here...
),
);
}
In CatalogModel:
class CatalogModel extends AppModel {
public $hasMany = array(
'Product' => array(
// binding params...
),
),
}
... and this goes on...
If you don't want to get excessive data in all actions, you should set in AppModel:
class AppModel extends Model {
public $recursive = -1;
}
In the controller action where you call the find function with associations:
$this->Shop->Behaviors->load('Containable');
$big_array = $this->Shop->find('all', array(
'conditions' => array(
//...
),
'contain' => array(
'Catalog' => array(
'Product' => array(
// etc, you get the point :)
),
),
),
));
It is also nice to declare the $belongsTo associations too, so you can access anything from anywhere, something like this:
$this->Catalog->Behaviors->load('Containable');
$big_array = $this->Catalog->find('all', array(
'conditions' => array(
//...
),
'contain' => array(
'Product' => array(
// ...
),
'Shop' => array(
// ...
),
),
));
EDIT
I see you have a Product->Category relation that i guess would be defined with $belongsTo. If you do a query like the one above, you will get a lot of duplicate queries (same category in many products). You can use $this->Category->find('list') but very often I find this inappropriate as it is returning only one field (I would be grateful if someone knows a way how can I get more fields with the list type). For this purpose, my workaround is making a custom function in the Category model like this:
class Category extends AppModel {
public function getSorted ($options = array()) {
$temp= $this->find('all', $options);
$output = array();
foreach ($temp[$this->alias] as $row) {
$output[$this->alias][$row['id']] = $row;
}
unset($temp);
return $output;
}
}
Then in the controller I would declare two arrays, the big one without category association and the category list one:
$this->loadModel('Category');
$this->set('categories', $this->Category->getSorted());
This way, I can get the needed category row by category id wherever i need it in the view.
Do not use CakePHP association they are not good handling complex relationships, you will later face problems with....Instead create all your join queries on the fly...I am giving you one example below:
Create one function inside Shop model and join catalog and product as shown below:
$options = array(
'conditions' => array('Product.id'=>9),
'joins' => array(
array(
'alias' => 'Catalog',
'table' => 'catalogs',
'type' => 'LEFT',
'conditions' => array(
'Catalog.product_id = Product.id',
),
),
array(
'alias' => 'Product',
'table' => 'products',
'type' => 'LEFT',
'conditions' => array(
'Shop.id = Product.shop_id',
),
)
),
'fields' => array('Product.*'),
'group' => array('Product.id')
);
$returnData = $this->find('all',$options);
This will make coding little easier and you can escape from associations!
Im developing a CMS with cakephp, i have 2 tables that i need to filter by some parameters, and for optimization i must do the query starting on the "hasMany" Model, the easy way will be make it on the "belongsTo" Model.
class Client extends AppModel {
public $actsAs = array('Containable');
public $hasMany = array('Projects');
}
class Project extends AppModel {
public $actsAs = array('Containable');
public $belongsTo = array('Client');
}
I have the where conditions in the $conditions array.
$this->paginate = array(
'Client' => array(
'limit' => 20,
'conditions' => $conditions,
'contain' => array(
'Project' => array(
//'limit' => 20
)
)
)
);
$this->set('clients', $this->paginate('Client'));
By this way i get 20 Clients and all the projects inside each Client. If i uncomment the line i get 20 projects inside each of the 20 Clients.
I want 20 projects totally, doesnt matter how many clients (max 20).
Can anyone help me?
Thanks in advance.
If you want to show the projects, you should paginate the project;
$this->paginate = array(
'Project' => array(
'limit' => 20,
'conditions' => $conditions,
// no need to set a limit on 'client',
// as each project belongs to only one client
'contain' => array(
'Client'
)
)
);
$this->set('projects', $this->paginate('Project'));
It may be nescessary to add the Project model to your $uses array inside the controller
I have a model template which hasmany themes.I want to show the list of templates with count of themes.I am using this
$this->Template->bindModel(
array(
'hasMany' => array(
'TemplateTheme' => array(
'className' => 'TemplateTheme',
'fields' => 'count(TemplateTheme.id) AS themes'
)
)
), false ...
it gives me 2 templates.But it gives me all the 3 themes count in the first template whereas 2 themes belongs to template 1 and the third theme belongs to template 2
in the query it is using id IN(template_id1,template_id2)
Any idea how to do this?
You are doing a common mistake, you are counting everyrow each time since you are not using group by, you should do is group by Template.id when you do your search. Butttttttt.... has many wont do a join :( so you have to force it a littleor use something like linkable component
example
$join = array(
array('table' => 'templateThemes',
'alias' => 'TemplateTheme',
'type' => 'LEFT',
'conditions' => array(
'Template.id = TemplateTheme.Template_id',
)
)
);
$fields = array('Template.id','count(TemplateTheme.id) AS themes');
$this->Template->find('all', array('fields'=>$fields, 'joins'=>$join', $group =>array('Template.id')));
You may also do it in reverse since belongsTo does the join something like this
in your model (it is always recommended to put it static in your model unless is not a normal association)
var belongsTo = array(
'Template'=> array(
'classname' => 'Template',
'foreign_key' => 'template_id'
);
and in controller
$fields = array('Template.id','count(TemplateTheme.id) AS themes');
$this->Template->find('all', array('fields'=>$fields, $group =>array('Template.id')));
Hope this helps you, if not just comment