A user has multiple products. Each product has a brand.
In the Products Table, I have a "brand_id" column.
For the moment there is no join when I do debug($user).
I would like a join between Brands and Products Tables (product.brand_id = brand.id). How can I solve this ?
(sorry for my english)
//Controller Users
$users = TableRegistry::getTableLocator()->get('users');
$user = $users->find('all')
->contain(['Products' => ['conditions' => ['id' => 25]]])
->first();
debug($user);
//Model Users
public function initialize(array $config)
{
$this->hasMany('products');
}
//model Products
public function initialize(array $config)
{
$this->belongsTo('brands');
}
Simple:
->contain([
'Products' => ['conditions' => ['id' => 25]],
'Products.Brands', // Add product brands
])
read more: https://book.cakephp.org/4/en/orm/query-builder.html#loading-associations
Related
I have master table portfolios and there are 2 child tables portfoliotags and p_snaps
models are as below
class PortfoliosTable extends Table
{
public function initialize(array $config): void
{
parent::initialize($config);
$this->setTable('portfolios');
$this->setDisplayField('id');
$this->setPrimaryKey('id');
$this->hasMany('PSnaps', [
'foreignKey' => 'portfolio_id',
]);
$this->hasMany('PortfolioTags', [
'foreignKey' => 'portfolio_id',
]);
}
}
class PortfolioTagsTable extends Table
{
public function initialize(array $config): void
{
parent::initialize($config);
$this->setTable('portfolio_tags');
$this->setDisplayField('id');
$this->setPrimaryKey('id');
$this->belongsTo('Portfolios', [
'foreignKey' => 'portfolio_id',
'joinType' => 'INNER',
]);
$this->belongsTo('Tags', [
'foreignKey' => 'tag_id',
'joinType' => 'INNER',
]);
}
}
class PSnapsTable extends Table
{
public function initialize(array $config): void
{
parent::initialize($config);
$this->setTable('p_snaps');
$this->setDisplayField('title');
$this->setPrimaryKey('id');
$this->belongsTo('Portfolios', [
'foreignKey' => 'portfolio_id',
'joinType' => 'INNER',
]);
}
}
find() method in controller is as below
$pfolios = $this->Portfolios->find('all')
->select(['Portfolios.id','Portfolios.client','Portfolios.country','Portfolios.url'])
->where(['Portfolios.status'=>1])
->order(['Portfolios.order_at'=>'asc','Portfolios.id'=>'asc'])
->limit(8)
->contain([
'PSnaps'=>function($q){
return $q
->select(['PSnaps.portfolio_id','PSnaps.snap'])
->where(['PSnaps.status'=>1])
->order(['PSnaps.order_at'])
->limit(1);
},
'PortfolioTags.Tags'=>function($q2){
return $q2
->order(['Tags.tag']);
}
])
->toList();
debug($pfolios);exit;
It is retuning PSnaps inside first record of Portfolio, while in all other records it is empty array
while I know there are records in database I tried using below query in mysql too
SELECT p.id,s.snap FROM `portfolios` p INNER join p_snaps s on p.id=s.portfolio_id
it is returning records as below
id snap
1 s1.png
2 pers.png
3 gmap.png
4 ita.png
5 soapd.png
6 chat.png
7 aissmo.png
8 zippy.png
2 pereport.png
This is because of limit() inside PSnaps, if it is commented it will show all PSnap records under each Portfolios records.
To handle this situation I fix it by adding hasOne relation in PortfoliosTable.php as
$this->hasOne('FirstPSnaps', [
'className' => 'PSnaps',
'foreignKey' => 'portfolio_id',
'strategy' => 'select',
'sort' => ['FirstPSnaps.order_at' => 'ASC'],
'conditions' => function ($e, $query) {
return [];
}]);
now call in controller will be changed to as below
$pfolios = $this->Portfolios->find('all')
->select(['Portfolios.id','Portfolios.client','Portfolios.country','Portfolios.url'])
->where(['Portfolios.status'=>1])
->order(['Portfolios.order_at'=>'asc','Portfolios.id'=>'asc'])
->limit(8)
->contain([
/********instead of PSnap I used FirstPSnaps *********/
'FirstPSnaps'=>function($q){
return $q
->select(['FirstPSnaps.portfolio_id','FirstPSnaps.snap'])
->where(['FirstPSnaps.status'=>1])
->order(['FirstPSnaps.order_at']);
},
'PortfolioTags.Tags'=>function($q2){
return $q2
->order(['Tags.tag']);
}
])
->toList();
debug($pfolios);exit;
I’m struggling with the hasOne association. Here are my 2 tables :
Actually the ‘Etudiant’ (means student) has one User associated to it with the foreign key id present in both table which is the primary key of Users.
Here is the model EtudiantTable (student) :
class EtudiantTable extends Table
{
/**
* Initialize method
*
* #param array $config The configuration for the Table.
* #return void
*/
public function initialize(array $config)
{
parent::initialize($config);
$this->setTable('etudiant');
$this->setDisplayField('ETUDIANT_ID');
$this->setPrimaryKey('ETUDIANT_ID');
$this->addBehavior('Timestamp');
$this->belongsTo('Maitredestage', [
'foreignKey' => 'MAITREDESTAGE_ID',
'joinType' => 'INNER'
]);
$this->belongsToMany('Tuteuriut', [
'foreignKey' => 'ETUDIANT_ID',
'targetForeignKey' => 'TUTEURIUT_ID',
'joinTable' => 'Suivre'
]);
$this->belongsTo('Users', [
'foreignKey' => 'ID',
'joinType' => 'INNER'
]);
}
And here is the add function in the EtudiantController :
public function add()
{
$etudiant = $this->Etudiant->newEntity();
if ($this->request->is('post')) {
$etudiant = $etutable->patchEntity($etudiant, $this->request->data(), [
'associated' => ['Users']
]);
if ($this->Etudiant->save($etudiant)){
$this->Flash->success(__('The etudiant has been saved.'));
return $this->redirect(['action' => 'index']);
}
$this->Flash->error(__('The etudiant could not be saved. Please, try again.'));
}
$this->set(compact('etudiant'));
}
And my usersTable model is like this :
$this->belongsTo('Users', [ 'foreignKey' => 'ID', 'joinType' => 'INNER' ]);
I want to do this : when i insert an Etudiant it inserts a new user and both have the same id.
But currently when i insert an Etudiant i get an error saying “no default value…id is empty” but the id is supposed to be inserted automatically.
I'm completely stuck so i need your help. Thanks in advance.
I have a specific request, to build an association between users. This causes me confusion, how to reduce duplicate associations, query and results?
The starting point would look like this?
// UsersTable
$this->belongsToMany('Users', [
'through' => 'Connections',
]);
How to fetch all associations in one query, regardless of whether users key in "user_from" or "user_to" field?
How about using aliases?
Your users table:
class UsersTable extends Table
{
public function initialize(array $config)
{
$this->hasMany('ToConnections', [
'className' => 'Connections',
'foreignKey' => 'user_to'
]);
$this->hasMany('FromConnections', [
'className' => 'Connections',
'foreignKey' => 'user_from'
]);
}
}
And your connections table:
class ConnectionsTable extends Table
{
public function initialize(array $config)
{
$this->belongsTo('ToUsers', [
'className' => 'Users',
'foreignKey' => 'user_to'
]);
$this->belongsTo('FromUsers', [
'className' => 'Users',
'foreignKey' => 'user_from'
]);
}
}
You can then use contain() to load associated models as required.
$query = $conections->find()->contain([
'ToUsers',
'FromUsers'
]);
$recipients = TableRegistry::get('users');
$query = $recipients->find()->contain([
'ToConnections.FromUsers',
]);
I have a form that collects data about an Article, and I want to save that data, as well as for a model called Abstract, where an Article hasMany Abstracts. My models look like this:
namespace App\Model\Table;
use Cake\ORM\Table;
use Cake\Validation\Validator;
class AbstractsTable extends Table
{
public function initialize(array $config)
{
$this->belongsTo('Articles');
}
public function validationDefault(Validator $validator)
{
$validator
->notEmpty('body');
return $validator;
}
}
And
namespace App\Model\Table;
use Cake\ORM\Table;
use Cake\Validation\Validator;
class ArticlesTable extends Table
{
public function initialize(array $config)
{
$this->addBehavior('Timestamp');
$this->hasMany('Abstracts');
}
public function validationDefault(Validator $validator)
{
$validator ->notEmpty('category')
return $validator;
}
}
My input form has a field named 'abstracts.body', and in my ArticlesController I have this function:
public function add()
{
$data = $this->request->data;
$article = $this->Articles->newEntity($data, [
'associated' => ['Abstracts']
]);
if ($this->request->is('post')) {
$article->user_id = $this->Auth->user('id');
$data['abstracts']['user_id'] = $article->user_id;
$data['abstracts']['approved'] = 0;
$article = $this->Articles->patchEntity($article, $data, [
'associated' => ['Abstracts']
]);
if ($this->Articles->save($article, [ 'validate' => false,
'associated' => ['Abstracts']
]) )
{
$this->Flash->success(__('Your article has been saved.'));
return $this->redirect(['action' => 'index']);
}
$this->Flash->error(__('Unable to add your article.'));
}
$this->set('article', $article);
}
My Abstracts table is pretty straightforward:
CREATE TABLE 'abstracts' ('id' INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, 'article_id' INTEGER , 'user_id' INTEGER , 'body' TEXT, 'approved' BOOLEAN )
From debugging I can see that I have the correct 'abstracts' array within my $data (in add()), but it doesn't appear to ever try to save it to the database. Can someone please point out my error? Thanks!
Got it.
I started going wrong here:
My input form has a field named 'abstracts.body'
Because it's a hasMany relationship, I need to have that input be 'abstracts.0.body'
Then the rest of LeWestopher's answer will work-- adding an index to the fields I want to fill in from the Controller, so $data[abstracts][0]['user_id'] => ... and so on. Thanks!
You're post processing your $data['abstracts'] array incorrectly resulting in the association not saving. $data['abstracts'] is expected to be an array of Abstracts. Your issue lies here:
$data['abstracts']['user_id'] = $article->user_id;
$data['abstracts']['approved'] = 0;
You should be able to fix this pretty easily by changing this to:
foreach($data['abstracts'] as $index => $abstract) {
$abstract['user_id'] = $article->user_id;
$abstract['approved'] = 0;
$data['abstracts'][$index] = $abstract;
}
This should correctly iterate over your array of abstracts, set the user_id and approved keys appropriately and then it should save correctly.
CakePHP 3.x Documentation on Saving Associations
EDIT: Very interesting issue indeed. Try it without using patchEntity, and use newEntity by itself instead:
public function add()
{
if ($this->request->is('post')) {
$data = $this->request->data;
// Post process abstracts objects
foreach($data['abstracts'] as $index => $abstract) {
$abstract['user_id'] = $article->user_id;
$abstract['approved'] = 0;
$data['abstracts'][$index] = $abstract;
}
// Build newEntity
$article = $this->Articles->newEntity($data, [
'associated' => ['Abstracts']
]);
// Save our entity with associations
if ($this->Articles->save($article, [
'validate' => false,
'associated' => ['Abstracts']
])) {
$this->Flash->success(__('Your article has been saved.'));
return $this->redirect(['action' => 'index']);
}
// On save fail
$this->Flash->error(__('Unable to add your article.'));
$this->set('article', $article);
}
}
EDIT 2: Your issue looks like it's definitely in your form helper. Your current form helper input creates an $data array that looks like this:
$data = [
'abstracts' => [
'body' => 'example text'
],
'category' => 'Science'
];
Which SHOULD look like:
$data = [
'abstracts' => [
['body' => 'example text'],
['body' => 'Im your second abstract'],
['body' => 'Abstract three!']
],
'category' => 'Science'
];
The issue lies in:
abstracts.body
Which should read as (in array dot notation):
// abstracts.0.body
echo $this->Form->input('abstracts.0.body', [
'label' => 'summary of article',
'maxlength' =>'440',
'rows' => '7'
]);
I believe that should be the last issue you run into.
Trying to set up an example on how to use join table with extra data I have the following set:
table students: id, name, [...]
table courses: id, title, [...]
join table courses_students: id, course_id, student_id, grade, hours_attended
The two base table's :
class StudentsTable extends Table {
public function initialize(array $config) {
$this->belongsToMany('Courses', [
'alias' => 'Courses',
'foreignKey' => 'student_id',
'targetForeignKey' => 'course_id',
'joinTable' => 'courses_students',
'through' => 'CoursesStudents',
]);
}
class CoursesTable extends Table {
public function initialize(array $config) {
$this->belongsToMany('Students', [
'alias' => 'Students',
'foreignKey' => 'course_id',
'targetForeignKey' => 'student_id',
'joinTable' => 'courses_students',
'through' => 'CoursesStudents',
]);
}
And the association table:
class CoursesStudentsTable extends Table {
public function initialize(array $config) {
$this->belongsTo('Courses', [
'alias' => 'Courses',
'foreignKey' => 'course_id'
]);
$this->belongsTo('Students', [
'alias' => 'Students',
'foreignKey' => 'student_id'
]);
}
Having some courses available in the table, I try to add and edit student records. Setting
[courses] => [_ids]
in the student record creates the records in both students table and the association table.
How should the post data array be formed in order to be able to store the grade and hours_attended fields in the association table when saving the student record?
You should configure your form field as the following assuming you are in the Courses form.
echo $this->Form->create($courses);
echo $this->Form->input("Courses.id");
echo $this->Form->input("Courses.title");
echo $this->Form->input("Courses.courses_students.$i.grade");
echo $this->Form->input("Courses.courses_students.$i.hours_attended");
The basic idea is that your forms should exactly follow how the data is formatted when retrieved in your controller.
This will then format your data correctly for you.
Then in your controller, you'll need to pass the associations to patch your entity.
$courses = $this->Courses->patchEntity($this->request->data(), ['associations' => ['CoursesStudents']]);
This will merge your associated request data in your entity, so you can save it.