In index controller i don't need any condition so data retrieves very clearly with all relational models.
$questions = Question::with('user','courses','subjects')->take(10)->orderBy("id","DESC")->get();
This return the question list with all related data like user courses and subject
But in courses controller when try to retrieve data with same and adding condition for course slug then its return error.
$questions = Question::with('user','courses','subjects')->where("slug",$course)->take(10)->orderBy("id","DESC")->get();
Because its adds this condition in question table query so there are no slug coloumn.
And When i retrieved with course class it return correct result but the subjects and users are missing
$questions = Course::with("question")->where("nick_name",$course)->orWhere("slug",$course)->orderBy("id","DESC")->take(10)->get();
Then how can i get all related data.
And the course model has
public function question(){
return $this->belongsToMany('App\Models\Question','university_questions')->take(10);
}
and question model have
public function courses(){
return $this->belongsToMany('App\Models\Course','course_questions');
}
public function subjects(){
return $this->belongsToMany('App\Models\Subject','subject_questions');
}
public function years(){
return $this->hasMany('App\Models\QuestionYear');
}
What is missing here please help.
if you want to get multiple relations you need to pass array,like this
$questions = Course::with([
'questions.user',
'questions.courses',
'questions.subjects'
])
->take(10)
->where("slug",$slug)
->orderBy("id","DESC")
->get();
Related
Im trying to make list with comments, including data about user and his car, that are stored in another tables.
Controller contained such query:
Charging::available()
->with('some.ports', 'shares')
->find($id);
And I rewrote it to such:
Charging::available()
->with('some.ports', 'shares')
->with('chargingComments.user')
->with('chargingComments.car')
->find($id);
Thats how ChargingComments model looks like:
public function comments() {
return $this->belongsTo(\App\Models\Charging::class);
}
public function user() {
return $this->belongsTo(\App\Models\User::class);
}
public function car() {
// here 'id' is the row in the table with users cars
// 'car_id' is in the table with comments
return $this->hasOne(\App\Models\UserCar::class, 'id', 'car_id');
}
It returns me data about each comments` user and his car, but btw I have to somehow limit result to 10 rows. I tried to add
'user' => function($query) {
return $query->take(10);
}])
But it didnt work.
Im sure that should be the better way to write this code, but dont know how
try this
Charging::with('some.ports', 'shares')->with('chargingComments.user')->with('chargingComments.car')->find($id)->latest()->take(10)->get();
public function getTourDetail(Request $req)
{
//Get link detail
$tour = Tour::where('id',$req->id)->first();
//I want to take location.city of the location table
$detail = Tour::join('location','tour.id_location','=','location.id')
->whereColumn([
['tour.id_location','=','location.id']
])
->get(array(
'tour.id as id_tour',
'location.image',
'tour.name',
'tour.id_location',
'location.city'
));
return view('page.tour-detail',compact('tour','detail'));
}
I would like to be able to combine two query statements to get information from the location table ($ detail) like the id of the link request ($ tour).
Since you use models, you can use Eloquent relationships to load related data. First, define a relationship in the Tour model:
public function location()
{
return $this->belongsTo(Location::class, 'id_location')
}
Then load Tour and get related location:
$tour = Tour::find($req->id);
$relatedLocation = $tour->location;
First thing, if you are using model then using eloquent relationship will be a better idea to deal with the situation like yours. But if you want to join your table then this will be the way:
public function getTourDetail($id)
{
$tour = Tour::where('id',$id)->first();
//I want to take location.city of the location table
$detail = DB::table('location')
->join('tour','tour.id_location','=','location.id')
->select(
'tour.id as id_tour',
'location.image',
'tour.name',
'tour.id_location',
'location.city'
)->get();
return view('page.tour-detail',compact('tour','detail'));
}
Note: if you are getting id from submitted form then replace first portion of the code with:-
public function getTourDetail(Request $request)
{
$tour = Tour::where('id',$request->id)->first();
I would like to display the posts of everyone the current user follows, ordered by date desc.
I have a many to many relationship supplying all the people the user is following.
$users = User::find(Auth::user()->id)->follow()->get();
I have a one to many relationship displaying the posts for any user.
$updates = App\User::find(?????)->updates()->orderBy('created_at', 'desc')->get();
The question mark's shows where the followers ID's need to be placed.
I can put the above query inside the for each loop but that obviously works its way through each follower rather than all posts in date order.
I suspect I may need to set a new relationship and work from the beginning. Can anyone advise.
User Model
public function updates()
{
return $this->hasMany('App\update');
}
/**
* User following relationship
*/
// Get all users we are following
public function follow()
{
return $this->belongsToMany('App\User', 'user_follows', 'user_id', 'follow_id')->withTimestamps()->withPivot('id');;;
}
// This function allows us to get a list of users following us
public function followers()
{
return $this->belongsToMany('App\User', 'user_follows', 'follow_id', 'user_id')->withTimestamps();;
}
}
Update Model
public function user_update()
{
return $this->belongsTo('App\User');
}
Thank you.
Since you want the posts, it is probably going to be easier starting a query on the Post model, and then filter the posts based on their relationships.
Assuming your Post model has an author relationship to the User that created the post, and the User has a follower relationship to all the Users that are following it, you could do:
$userId = Auth::user()->id;
$posts = \App\Post::whereHas('author.follower', function ($q) use ($userId) {
return $q->where('id', $userId);
})
->latest() // built in helper method for orderBy('created_at', 'desc')
->get();
Now, $posts will be a collection of your Post models that were authored by a user that is being followed by your authenticated user.
My Model Items is related to Rooms, which is related to Buildings, which is related to Locations.
Short: Items belongsTo Rooms belongsTo Buildings belongsTo Locations
At the index function of the ItemController I want to show a table of Items. I use Laravel Datatables. It works for 'simple' tables, but I ran into the problem of sorting/searching custom/appended fields, because they are not in the table of course.
Basically I want to join the Room, Building and Location Name for each Item in the displaying table.
This is my Items Model:
protected $appends = [
'building_title',
'location_title',
'room_title',
];
public function getLocationTitleAttribute() {
return $this->room->building->location->title;
}
public function getBuildingTitleAttribute() {
return $this->room->building->title;
}
public function getRoomTitleAttribute() {
return $this->room->title;
}
This is my Controller:
public function anyData()
{
return Datatables::of(Item::query())->make(true);
}
What is the best approach to enable sorting/filtering for appended fields?
Thank you for reading.
This is my solution (no appended fields were used):
public function anyData()
{
$items = Item::join('rooms', 'items.room_id', '=', 'rooms.id')
->join('buildings', 'rooms.building_id', '=', 'buildings.id')
->join('locations', 'buildings.location_id', '=', 'locations.id')
->select([
'items.id',
'items.title',
'items.label_number',
'items.fibu_number',
'rooms.title as room_title',
'buildings.title as building_title',
'locations.title as location_title'
]);
return Datatables::of($items)->make(true);
}
I'm wondering it would be possible to add a where condition to a with.
Such as:
Comment::with('Users')->where('allowed', 'Y')->get();
I was trying to find a more simple way to make queries avoiding the whereHas method which looks quite verbose:
$users = Comment::whereHas('users', function($q)
{
$q->where('allowed', 'Y');
})->get();
The raw query I want internally to generate should be like so:
select * from comments, users
where users.id = comments.user_id and
users.allowed = 'Y'
I'm used to work with CakePHP in which this queries look very simple:
$this->Comments->find('all', array('Users.allowed' => 'Y'));
The relationships I have defined are:
//Comments.php
public function Users()
{
return $this->belongsTo('Users');
}
//Users.php
public function Comments(){
return $this->hasMany('Comments');
}
You may try this
$users = User::with(array('comments' => function($q)
{
$q->where('attachment', 1);
}))->get();
Update : Alternatively you may use a where clause in your relationship in your User model
// Relation for comments with attachment value 1
// and if hasMany relation is used
public function commentsWithAttachment()
{
return $this->hasMany('Comment')->where('attachment', 1);
}
// Relation for all comments
// and if hasMany relation is used
public function comments()
{
return $this->hasMany('Comment');
}
So, you can just use
// Comments with attachment value 1
User::with('commentsWithAttachment')->get();
// All comments
User::with('comments')->get();
Update : I think you want all comments with users where attachment is 1, if this what you want then it should be Comment not User
Comment::with('user')->where('attachment', 1)->get();
In this case your relation should be
public function user()
{
return $this->belongsTo('User'); // if model name is User
}
Because one comment belongs to only one user.