$posts = PostUrl::with(['post' => function ($q) {
$q->orderBy('created_at', 'DESC');
}])
->where('category','like' ,'%'.$cat.'%')
->paginate(8);
How can I sort the result as per the created_at of the post inside?
When try to ->orderBy('post.created_at','DESC') it show column not found.
Add PostUrl models
public function post(){
return $this->hasMany('App\Post', 'postid')->orderBy('created_at', 'DESC');
}
Controller :
$posts = PostUrl::with(['post'])->where('category','like' ,'%'.$cat.'%')->paginate(8);
Make sure you have established correctly in your PostUrl model the relationship with your Post model (if it is so called). You should have a function similar to the following in your model in order to with() method works correctly in the controller:
public function post(){
return $this->hasMany('App\Post', 'postid');
}
This way there should be no problem for the orderBy clause to work properly.
Related
I made a "hasMany" relationship from Category model to Product model using ProductCatRel model.
I am trying to ordering my products form Category model. The "where" condition is fine, But "orderBy" is not working. Here is my code:
public function Products(){
return $this->hasMany(ProductCatRel::class,'category')
->with('Product')
->whereHas('Product', function($q){
$q->where('status', 1)->orderBy('position');
});
}
Use the following snippet may works
public function products(){
return $this->hasMany(ProductCatRel::class,'category')
->with('Product')
->whereHas('Product', function($q){
$q->where('status', 1)
});
}
$products = App\Category::find(1)->products()->orderBy('position')->get();
whereHas() only check existence and don't affect on retrieved relation data.
You should apply orderBy() in with() method. Also you need to duplicate status checking in with() method.
public function Products(){
return $this
->hasMany(ProductCatRel::class, 'category')
->with(['Product' => function ($q) {
$q->where('status', 1)->orderBy('position');
}])
->whereHas('Product', function($q) {
$q->where('status', 1);
});
}
I have two models in a many-to-many relationship: Fixture and Event.
Fixture:
public function events()
{
return $this->belongsToMany(Event::class, 'fixture_events')->withPivot('player_id');
}
Event:
public function fixtures()
{
return $this->belongsToMany(Fixture::class, 'fixture_events')->withPivot('player_id');
}
You will notice that the pivot table has an additional field player_id. This is because FixtureEvent also had a relationship to a model called Player.
FixtureEvent:
public function fixture()
{
return $this->hasOne(Fixture::class, 'id', 'fixture_id');
}
public function event()
{
return $this->hasOne(Event::class, 'id', 'event_id');
}
public function player()
{
return $this->belongsTo(Player::class, 'id', 'player_id');
}
And Player has:
public function events()
{
return $this->hasMany(FixtureEvent::class);
}
My problem arises when I want to get all the fixture_events for a player and sort them by a field in the events table. This field is named sequence.
However, whatever I do, the events always come out ordered by ID.
This is the query that I would like to order by events.sequence, whether by using some type of join or whatever works (this is inside the Player model so $this is a player object):
$events = $this->events()->whereHas('fixture', function ($query) use ($round, $competition_id) {
$query->where('fixtures.round', '=', $round)->where('competition_id', $competition_id);
})->get();
I've tried adding a join query here on fixture_events.event_id = events.id and then ordering by events.sequence but this doesn't work.
I've also tried adding orderBy directly in the model relationship, i.e. in the Fixture model:
public function events()
{
return $this->belongsToMany(Event::class, 'fixture_events')->orderBy('sequence')->withPivot('player_id');
}
But this does nothing for my problem.
How do I make this happen?
Update
At first I misread the relations, can you try with the below query?
$events = $this->events()->whereHas('fixture', function ($query) use ($round, $competition_id) {
$query->where('fixtures.round', '=', $round)->where('competition_id', $competition_id);
})->with(['events.event' => function ($query) {
$query->orderBy('sequence');
}])->get();
You have a couple of alternatives, but first I suggest you to edit your relationship to include the sequence field you are trying to load.
Then proceed with one of the following:
Order by on the relationship definition, but I think you have to load that field from the pivot table, otherwise you won't have its value, and prefix the relations table on the orderby field.
public function events() {
return $this->belongsToMany(Event::class, 'fixture_events')
->withPivot(['player_id', 'sequence'])
->orderBy('fixture_events.sequence');
}
or with:
public function events() {
return $this->belongsToMany(Event::class, 'fixture_events')
->withPivot(['player_id', 'sequence'])
->orderBy('pivot_sequence');
}
Order by a pivot field outside the relation can be done like this:
$events = $this->events()->whereHas('fixture', function ($query) use ($round, $competition_id) {
$query->where('fixtures.round', '=', $round)->where('competition_id', $competition_id);
})->with(['fixture' => function ($query) {
$query->orderBy('sequence');
}])->get();
or with:
$events = $this->events()->whereHas('fixture', function ($query) use ($round, $competition_id) {
$query->where('fixtures.round', '=', $round)->where('competition_id', $competition_id);
})
->orderBy('pivot_sequence')
->get();
Let me know if any of these methods works!
I have this model for notifications table:
class Notification extends Model
{
public function users()
{
return $this->belongsToMany(User::class, 'notification_user', 'notification_id', 'user_id');
}
}
And this method in controller for getting data from notifications where id of notifications is related to a pivot table named notification_user:
$myNotifications = DB::table('notification_user')
->join('notifications', 'notifications.id', 'notification_user.notification_id')
->where('notification_user.user_id', $userId)
->where('notification_user.seen', 0)
->get();
the result of $myNotifications is correct but I want to use Model and its relationship instead of DB.
How can I get all records in notifications where each notification related to a specific user which is not seen by the user.
You need to add ->withPivot('seen') to the relationship:
public function users()
{
return $this
->belongsToMany(User::class, 'notification_user', 'notification_id', 'user_id')
->withPivot('seen');
}
Then you can do:
Notification::whereHas('users', function ($q) use ($userId) {
$q->where('id', $userId)->where('seen', 0);
})->get();
To avoid joining users, your other option is whereExists:
Notification::whereExists(function ($q) use ($userId) {
$q
->selectRaw(1)
->table('notification_user')
->whereRaw('notifications.id = notification_user.notification_id')
->where('user_id', $userId)
->where('seen', 0);
})->get();
Should still be more performant, but not much more elegant.
You will have to define the same relation in User model as notifications and then:
$notifications = User::where('id', $user_id)->notifications()->where('seen', 0)->get();
You can use with keyword for eager loading inside your controller.
like if you have any relation defined inside your model, just add a with('modelRelation') before your get() statement in eloquent.
Happy Coding.
I have the following eloquent models:
User | id
Post | id
Comment | id | post_id | user_id
Using eloquent, how can I fetch all Posts which a specific User hasn't commented yet?
I tried so far:
In Model Post:
public function noCommentOf(User $user) {
$this->hasNot('App\Comment')->commentOf($user);
}
In Model Comment:
public function commentOf($query, User $user) {
return $query->where('user_id', '=', $user->id);
}
The way I would do this is by querying the Post model with a whereDoesnthave relationship. In your controller:
public function getPostsWithoutCommenter(){
$userId = 1; // Could be `$user`, `use($user)` and `$user->id`.
$posts = \App\Post::whereDoesntHave("comments", function($subQuery) use($userId){
$subQuery->where("user_id", "=", $userId);
})->get();
}
This would assume that comments is defined on the Post model as:
public function comments(){
return $this->hasMany(Comment::class);
}
Basically, if the comments relationship with the check for that $userId returns a Collection, it would be ignored from the result set.
Post model
public function comments()
{
return $this->hasMany(Comment::class)
}
Then get posts
$posts = Post:: whereDoesntHave('comments', function ($query) use ($userId) {
$query->where('user_id', $userId);
});
To get posts with no comments
$posts = Post::has('comments', '=', 0)->get();
I think:
$user->post()->leftJoin('comments', 'posts.id', '=', 'comments.post_id')->whereNull('comments.id');
I have a function on my model that check active status in equipment_station table,
originally it only checked one status, now i need to pass a parameter to the model with active or inactive values, I've tried this with no success.
controller:
model :
How can i change the parameter in the model, I send status from controller as inactive or active.
thanks in advance
You could you query scope
public function scopeActive($query, $active)
{
return $query->where('active', $active);
}
then you can call it in your model
Estacion::active(true)->get();
You could Constraint Eager Loading by specifying additional query constraints for the eager loading
$historial_estaction =
Estacion::where('estacion.id', $id)
->whereHas('equipos', function($query) use ($estado1) {
$query->where('equipo_estacion.estado', $estado1);
})->with(['equipos' => function ($query) use ($estado1) {
$query->where('estado', $estado1);
}])->get();
Model:
public function equipos()
{
return $this->belongsToMany('App\Equipo')
->withPivot('estado')
->withTimestamps();
}