I have two related tables and I want to return all fields including the ID (key) field. My query below returns all fields except the ID. how do I return the ID field from one of the tables?
'programmes' => ProgrammeInstances::with('programmes')->get(),
the query below returns Unknown column 'programmes.programme_title' as it is looking for it in the table 'programme_instances'
'programmes' => ProgrammeInstances::with('programmes')->select('programmes.programme_title', 'programmeInstances.id', 'programmeInstances.name', 'programmeInstances.year')->get(),
Laravel provides multiple relationships, one of these is the hasMany() relationship which should return a collection where a User hasMany rows inside of your database
For example, inside your User model :
public function programmes() {
return $this->hasMany(Program::class);
}
Now in your controller, you can do :
public function edit($id) {
$programmes = User::find($id)->with('programmes')->get();
return view('user.edit')->with('programmes', $programmes);
}
And then you can loop over it inside your view
#forelse($programmes->programmes as $program)
// provide the data
#empty
// the user doesn’t have any programmes
#endforelse
a solution i found below - still not sure why ID isnt automatically returned when i get all fields, but works when i specify individual fields:
'programmes' => ProgrammeInstances::with('programmes')
->get()
->transform(fn ($prog) => [
'programme_title' => $prog->programmes->programme_title,
'id' => $prog->id,
'name' => $prog->name,
'year' => $prog->year,
]),
I have my Country model and a State Model. Only countries that have states can show states, or return [];
I would like to return this in one hit into my response object, yet I can't wrap my head around getting the id of the current country that is running in the query, I built this just now:
return response()->responseObject([
'code' => 200,
'status' => true,
'message' => 'Retrieved List of Available Countries',
'data' => Country::where('allow_registration', Country::REGISTRATION_ALLOWED)->get([
'id',
'name',
'iso',
'iso3',
'prefix',
'states' => function($query){}
])
]);
And I have another function waiting for this:
public static function getStates($id)
{
$states = State::where('country_id', $id);
return $states ? $states : [];
}
Am I approaching this right? What do I have to put in my sub query function in order for current country ID? Or did I approach this wrong and there is a more eloquent way of implementing?
in your country model create states relation
$this->hasMany(State::class);
then you can get all countries with its states by that :
Country::with('states')->get();
Below is my model code Product.php.
public $asYouType = true;
public function toSearchableArray()
{
$array = $this->toArray();
// Customize array...
return $array;
}
Controller code
$phones = Product::search($request['phone'])->get();
Now I want to search for products from my product table, but TNTSearch is searching all columns in my tables and gives me the result. However, I am working on an e-commerce site, and I want results by product title and then from the description column.
My table structure looks like the below image.
For indexing specific columns you should set custom array,
For instance:
public function toSearchableArray()
{
$array = [
//'title' => $this->title,
'description' => $this->description
];
return $array;
}
In above example we ignore the title field content to indexing and just index description field.
I have three database table:
product (id, name)
product_has_adv (product,advantage,sort,important)
advantage (id, text)
In ProductModel I defined this:
public function getAdvantages()
{
return $this->hasMany(AdvantageModel::className(), ['id' => 'advantage'])
->viaTable('product_has_advantage', ['product' => 'id']);
}
I get the advantages without any problems.
But now I need to add a where product_has_advantage.important = 1 clausel and also sort the advantages by the sort-columen in the product_has_advantage-table.
How and where I have to realize it?
Using via and viaTable methods with relations will cause two separate queries.
You can specify callable in third parameter like this:
public function getAdvantages()
{
return $this->hasMany(AdvantageModel::className(), ['id' => 'advantage'])
->viaTable('product_has_advantage', ['product' => 'id'], function ($query) {
/* #var $query \yii\db\ActiveQuery */
$query->andWhere(['important' => 1])
->orderBy(['sort' => SORT_DESC]);
});
}
The filter by important will be applied, but the sort won't since it happens in first query. As a result the order of ids in IN statement will be changed.
Depending on your database logic maybe it's better to move important and sort columns to advantage table.
Then just add condition and sort to the existing method chain:
public function getAdvantages()
{
return $this->hasMany(AdvantageModel::className(), ['id' => 'advantage'])
->viaTable('product_has_advantage', ['product' => 'id'])
->andWhere(['important' => 1])
->orderBy(['sort' => SORT_DESC]);
}
Using viaTable methods with relations will cause two separate queries, but if you don't need link() method you can use innerJoin in the following way to sort by product_has_advantage table:
public function getAdvantages()
{
$query = AdvantageModel::find();
$query->multiple = true;
$query->innerJoin('product_has_advantage','product_has_advantage.advantage = advantage.id');
$query->andWhere(['product_has_advantage.product' => $this->id, 'product_has_advantage.important' => 1]);
$query->orderBy(['product_has_advantage.sort' => SORT_DESC]);
return $query;
}
Note than $query->multiple = true allows you to use this method as Yii2 hasMany relation.
Just for reference https://github.com/yiisoft/yii2/issues/10174
It's near impossible to ORDER BY viaTable() columns.
For Yii 2.0.7 it returns set of ID's from viaTable() query,
and final/top query IN() clause ignores the order.
For who comes here after a while and don't like above solutions, I got it working by joining back to the via table after the filter via table.
Example for above code:
public function getAdvantages()
{
return $this->hasMany(AdvantageModel::className(), ['id' => 'advantage'])
->viaTable('product_has_advantage', ['product' => 'id'])
->innerJoin('product_has_advantage','XXX')
->orderBy('product_has_advantage.YYY'=> SORT_ASC);
}
Take care about changing XXX with the right join path and YYY with the right sort column.
First you need to create a model named ProductHasAdv for junction table (product_has_adv) using CRUD.
Then create relation in product model and sort it:
public function getAdvRels()
{
return $this->hasMany(ProductHasAdv::className(), ['product' => 'id'])->
orderBy(['sort' => SORT_ASC]);;
}
Then create second relationship like this:
public function getAdvantages()
{
$adv_ids = [];
foreach ($this->advRels as $adv_rel)
$adv_ids[] = $adv_rel->advantage;
return $this->hasMany(Advantage::className(), ['id' => 'advantage'])->viaTable('product_has_adv', ['product' => 'id'])->orderBy([new Expression('FIELD (id, ' . implode(',', $adv_ids) . ')')]);
}
This will sort final result using order by FIELD technique.
Don't forget to add:
use yii\db\Expression;
line to head.
I`ve managed this some how... but it needs additional work after.
The point is that you have to query many-to-many relation first from source model and after that inside that closure you should query your target model.
$query = Product::find();
$query->joinWith([
'product_has_adv' => function ($query)
{
$query->alias('pha');
$query->orderBy('pha.sort ASC');
$query->joinWith(['advantage ' => function ($query){
$query->select([
'a.id',
'a.text',
]);
$query->alias('a');
}]);
},
]);
Then you just have to prettify the sorted result to your needs.
The result for each row would look like
"product_has_adv": [
{
"product": "875",
"advantage": "true",
"sort": "0",
"important": "1",
"advantage ": {
"id": "875",
"text": "Some text..",
}
},
As explained by #arogachev, the viaTable uses two separate queries, which renders any intermediate orderBy obsolete
You could replace the viaTable with an innerJoin as follows, in a similar solution to #MartinM
public function getAdvantages()
{
return $this->hasMany(AdvantageModel::class, ['pha.product' => 'id'])
->innerJoin('product_has_advantage pha', 'pha.advantage = advantage.id')
->andWhere(['pha.important' => 1])
->orderBy(['pha.sort' => SORT_ASC]);
}
By adjusting the result of hasMany, you are adjusting the query for the target class - AdvantageModel::find(); product_has_advantage can be joined via the advantage identity
The second parameter of hasMany, link, can be viewed as [ query.column => $this->attribute ], which you can now support via the joined product_has_advantage and its product identity
Note, when using viaTable, the link parameter can be viewed as if the intermediate query is complete and we are starting from there; [ query.column => viaTable.column ]
hence ['id', 'advantage'] in your question
public function getAdvantages()
{
return $this
->hasMany(AdvantageModel::className(), ['id' => 'advantage'])
->viaTable('product_has_advantage', ['product' => 'id'])
->andWhere(['important' => 1])
->orderBy(['sort' => SORT_DESC]);
}
I'm trying to return a list of $users with an array of roles.
Here's my controller:
$users = DB::table('users')->take(5)->skip(2)->get();
foreach ($users as $user)
{
$user = User::with('roles')->find($user->id);
}
return Response::json(array(
'users' => $users
));
And here's the model relationship:
public function roles()
{
return $this->belongsToMany('Role')->withTimestamps();
}
But this just returns the users without the role attached to it. However, if I do this:
return Response::json(array(
'users' => User::with('roles')->get()
));
I get the full list with the roles attached to each user. So, what am I doing wrong?
Oddly, if I do this:
return Response::json(array(
'users' => User::with('roles')->find($user->id)
));
Then it returns that user with the roles as I expected, so why not return it in the foreach statement?
You are loosing the whole Eloquent relations functionality when using DB queries.
You could just
$users = User::with('roles')->take(5)->skip(2)->get();
A good practice is to not mix Eloquent model "style" queries (User::...->get()) with direct DB queries (DB::table('user')...->get).
The foreach uses pass by value. That means you are not changing the actual array item but just a copy of the value. To change that and get the item passed by reference add a &:
foreach ($users as &$user) {
$user = User::with('roles')->find($user->id);
}
However why don't you just do it this way?
$users = User::with('roles')->take(5)->skip(2)->get();
return Response::json(array(
'users' => $users
));