I'm, trying to do something like this:
$verfuegbarkeiten = Verfuegbarkeit::verfuegbar()->with('product', 'producer', 'producer.user', 'producer.user.ort')->where('product.kategorie_id', '=', $_GET['kat'])->get()->toArray();
I want to use a 'where' clause so i can only get the results where the 'product's attribute 'kategorie_id' matches the GET parameter. How can I 'where' on a relation? It's really important to me that this value can be dynamic, so writing a fix function in the related Model won't be a good solution.
Every hint appreciated
You want whereHas(), documentation here: https://laravel.com/docs/5.2/eloquent-relationships#querying-relations
For your example, that would mean something like this:
$kat = $_GET['kat'];
$verfuegbarkeiten = Verfuegbarkeit::verfuegbar()
->with('product', 'producer', 'producer.user', 'producer.user.ort')
->whereHas('product', function($query) use ($kat) {
$query->where('kat', $kat);
})
->get()
->toArray();
Although I might add that using $_GET is generally discouraged in Laravel.
Related
$posts = Post::all()->orderby('created_at','desc')->where('usr_id','=',session('LoggedUser'))->get();
return view('admin.profile',compact('userInfo' , 'posts'));
i am making a custom auth for a journal activity but i cant sort the content i shows this error
"Method Illuminate\Database\Eloquent\Collection::orderby does not exist. "
$posts = Post::where('usr_id','=',session('LoggedUser'))->orderby('created_at','desc')->get();
True query like that. When you take all() already query done.
Change it to:
$posts = Post::where('usr_id','=',session('LoggedUser'))->orderby('created_at','desc')->get();
you cant use all() and orderBy because all() does not allow the modification of the query.
I believe this might be because you typed orderby instead of orderBy (notice the uppercase). See laravel orderBy documentation if needed.
Plus, as mentionned by other, don't use all() if you need to do other thing (where clause, order by, etc) in you query.
Change the orderby to orderBy. This could be the reason you are getting the error.
$posts = Post::all()->orderBy('created_at', 'DESC')->where('usr_id','=',session('LoggedUser'))->get();
return view('admin.profile',compact('userInfo' , 'posts'));
Or...
If you want to get specific number of posts you can do it this way to avoid using the Post::all
$posts = Post::orderBy('created_at', 'DESC')->where('usr_id','=',session('LoggedUser'))->paginate(5);
return view('admin.profile',compact('userInfo' , 'posts'));
Yeah this is pretty confusing and just got me as well.
The actual problem isn't the capitilization typo (orderby versus orderBy) but rather the fact that you're using ->all() instead of just Model::orderBy()->...
The moment you use ->all() the object is transformed to another type of collection object and the normal methods one would expect do not exist.
In this case you should rather use sortBy().
See here.
I have a Video model and a Tag model. Let's say I would like to get all videos that have tags, maybe all the videos that have more than three relations with tags. I would do this:
Video::has('tags', '>=', 3)->get();
If I want do add more constrains, for example get all videos with at least 3 tags and the tag name should contain 'something'. I could do something like this:
Video::whereHas('tags' function(Builder $query){$query->where('name', 'like', '%something%');}, '>=', 3)->get();
But what if I would like to do something more, like only tags with odd/even id to be counted. Something like fmod('id', 2) to be used inside the closure. To check if the id is even or odd. Since I can't do something like: $query->where('id%2', '=', 0 );. Well, in this case I know I could use $query->where('name', 'like', '%something%')->whereRaw('tags.id%2=0');. But is there any other way using where() method?
where() first parameter will always be the column, but in cases where you specifies columns in the queries like where() and select(), you can use DB::raw(); This should make this syntax viable, which i think is the best solution the Eloquent ORM.
->where(DB::raw('tags.id%2'), 0);
I use the query to get the models that the user has, but only 1 model is returned for each user. How to get all? If I set $count=3 I should receive 3 or more models in group, but only first row is returned
$items->where(/*.....*/)
->groupBy('user_id')
->havingRaw("COUNT(*) >= {$count}")->get()
UPDATE
I solved it. I created a separate function for preparing the query and used it 2 times.
I think this may be an incorrect solution, but it works
$items = Items::query();
$this->prepareQuery($request, $items)
$items->whereHas('user', function ($q) use ($count, $request){
$q->whereHas('items', function ($query) use ($request){
$this->prepareQuery($request, $query);
}, '>=', $count);
})
->paginate(4);
This may work.Sometimes take can help.
$items->where(/*.....*/)
->groupBy('user_id')
->take({{$count}});
If you have relationships set up you can quite simply call:
$model->models()
$model being the model you're wanting the list for.
models() being the name of the relationship between the two items.
For example, a post may have many comments. You can call $post->comments() to get a list of the posts comments.
You may also query this from the database directly with some eloquent magic.
Post::with('comments')->where(/*....*/)->get();
EDIT:
You can check to see if a model has X number of related models like so.
Post::has('comments', '>=', 3)->where(/*...*/)->get();
Hi I have a query that looks roughly like this
Comment::join('users', 'users.id', '=', 'comments.user_id')
->whereIn('comments.id', $ids)
->paginate(5);
where $ids is an array of comment ids. Changing the paginate to get() works but I want to use paginate as it returns many built-in useful results such as next_page_url etc. So how do I modify the query to utilize both whereIn and paginate together?
I found out the issue later on, I forgot to serialize the object before I return the result. A simple toArray() has done the trick.
In Laravel 4.2 I have a model called Product with many-to-many relationshis to other models like Country or Category. I want to filter out products that are "incomplete", which means they have no connected countries or no connected categories. I can use whereDoesntHave() method to filter out one relation. When I use it two times in one query it creates AND condition, but I need OR. I can't find orWhereDoesntHave() method in API documentation. I can't pass multiple relations as arguments because it expects first argument to be a string.
I need something like this:
$products = Product::whereDoesntHave('categories')->orWhereDoesntHave('countries')->get();
Is there any way to achive whereDoesntHave() with multiple OR conditions?
You can use doesntHave and specify the boolean operator:
$products = Product::doesntHave('categories')->doesntHave('countries', 'or')->get();
Actually you only need whereDoesntHave if you want to pass in a closure to filter the related models before checking if any of them exist. In case you want to do that you can pass the closure as third argument:
$products = Product::doesntHave('categories', 'or', function($q){
$q->where('active', false);
})->doesntHave('countries', 'or')->get();
Since Laravel 5.5 there is an orWhereDoesntHave function.
You may use it like this
Product::whereDoesntHave('categories', function($q){ //... })
->orWhereDoesntHave('countries', function($q){//...})
->get();
From you example it seems that you are not using a where clause, so you may just use
Product::doesntHave('categories')
->orDoesntHave('countries')
->get();
Use
Product::whereDoesntHave('categories')->doesntHave('countries', 'or')->get();
Laravel Source Code:
whereDoesntHave https://github.com/illuminate/database/blob/master/Eloquent/Builder.php#L654
calls
https://github.com/illuminate/database/blob/master/Eloquent/Builder.php#L628
internally.
Let’s say we have Authors and Books, with 1-n relationship – one Author can have one or many Books. Here’s how it looks in app\Author.php:
public function books()
{
return $this->hasMany(\App\Book::class, 'author_id');
}
Now, what if we want to show only those Authors that have at least one book? Simple, there’s method has():
$authors = Author::has('books')->get();
Similarly, there’s an opposite method – what if we want to query only the authors without any books? Use doesnthave():
$authors = Author::doesnthave('books')->get();
It’s not only convenient, but also super-easy to read and understand, even if you’re not a Laravel developer, right?