I try to make a particular query but i'm not sure how to achieve this , i would like to access to saison table
{{ \App\Licencies::where(['structure_id' => Auth::user()->structure->id])->where(['saison_id->dt_fin' , '<' , \Carbon\Carbon::now()])->count() }}
here the saison() relation in my model , that i can access very well
$licencie->saison->dt_fin < \Carbon\Carbon::now()
someone knows to right query ? thanks a lot in advance
Thanks for the explanation in the comment.
In the Laraval documentation there is the following example:
// Retrieve all posts with at least one comment containing words like foo%
$posts = Post::whereHas('comments', function ($query) {
$query->where('content', 'like', 'foo%');
})->get();
Which can easily be transformed for your purpose:
// Retrieve all licencies where the saison has a dt_fin before now
$licencies = \App\Licencies::whereHas('saison', function ($query) {
$query->where('dt_fin', '<', \Carbon\Carbon::now());
})->get();
If it still returns errors, let us know! (kinda hard to test without carbin and a structure that is equal to yours)
Related
I'm trying to make a complex query using Laravel Eloquent. I know how to do it using raw SQL query, but I don't have any idea how to do it using Eloquent.
Here is my SQL query, and it works perfectly:
select *
from students
where exists(select *
from (select student_movements.id AS sm_id, student_movements.direction, student_movements.deleted_at
from student_movements
inner join student_student_movements
on student_movements.id = student_student_movements.student_movement_id
where students.id = student_student_movements.student_id
and student_movements.deleted_at is null
order by student_movements.id desc
limit 1) as last_sm
where last_sm.direction = 1 AND last_sm.date >= 5-5-2022
);
My models have many-to-many relation using student_student_movements table:
Student
public function studentMovements(): BelongsToMany
{
return $this->belongsToMany(
StudentMovement::class,
'student_student_movements',
);
}
StudentMovement
public function students(): BelongsToMany
{
return $this->belongsToMany(
Student::class,
'student_student_movements'
);
}
My goal is to get all Students, who have the last Movement where direction = 1 and the date of the last Movement >= $someDate.
So, my question is: how to translate the SQL query to Eloquent? I saw many similar questions, but they are not helping me.
Thanks for any advice.
Use the whereHas method, then fine tune the sub query inside the closure to your needs.
You can use the whereHas and orWhereHas methods to define
additional query constraints on your has queries.
There is an example like that in laravel documentation
use Illuminate\Database\Eloquent\Builder;
// Retrieve posts with at least one comment containing words like code%...
$posts = Post::whereHas('comments', function (Builder $query) {
$query->where('content', 'like', 'code%');
})->get();
// Retrieve posts with at least ten comments containing words like code%...
$posts = Post::whereHas('comments', function (Builder $query) {
$query->where('content', 'like', 'code%');
}, '>=', 10)->get();
check the documentation here
I'm trying to understand some advanced eloquent commands and on the Laravel official documentation, there is not so much about the Eloquent orWhereHas method and there isn't also an example about how it works.
https://laravel.com/docs/8.x/eloquent-relationships#querying-relationship-existence
Can somebody help me to understand it with also a simple example?
How to use it: just chain as any other Eloquent method
User::whereHas(...)->orWhereHas(...)->get();
When to use it: imagine you have Users, Posts and Comments, and each user can write posts and comments. Then you need to get active users. For example, you assume active as user, who has made posts OR comments last 7 days. So, you can get it this way:
$users = App\Models\User::query()
->whereHas('posts', function (Builder $query) {
$query->where('created_at', '>=', Carbon::now()->subDays(7));
})
->orWhereHas('comments', function (Builder $query) {
$query->where('created_at', '>=', Carbon::now()->subDays(7));
})
->get();
Say there's a blog kind of app. The main entity/model of the app would be Post (Blog Post).
When any author writes and publishes a Post,
visitors to the blog site can leave Comment(s) for the Post
visitors can Like a Post
So we have 3 models here
Post - which can have many Comment(s)
Post - can have many Like(s)
Now let's say for some reason we want to get all Post records from the database which either have 10 or more comments in the current month or 3 or more likes in the current month
We can write a query like
$posts = Post::whereHas('comments', function($query) {
$query->where('created_at', '>', now()->startOfMonth();
}, '>=', 10)
->orWhereHas('likes', function($query){
$query->where('created_at', '> ', now()->startOfMonth();
}, '>=', 3)
->get();
Laravel docs: https://laravel.com/docs/8.x/eloquent-relationships#querying-relationship-existence
Just like where both whereHas and orWhereHas accepts closure as 2nd argument for more fine grained query control.
Actually whereHas is supposed to be used when you want to have more power on constraints.
If you just want to check the existence of relation records you can use has for eg:
Get all post records which either have comment or like and paginate 20 per page
$postsWithCommentsOrLikes = Post::has('comments')
->orHas('likes')
->paginate(20);
I'm building a Laravel page on which I want to show a list of lessons. Which lessons should be on the page is filtered by three criteria (of which all should be true):
The lesson is active, ie "where('active', true)". Simple enough.
The lesson is part of a track that the user has chosen. Models are set up with belongsToMany() (it is a many-to-many relationship), so I can get these lessons by a simple $track->lessons.
This is where it gets tricky. Some lessons should only be visible to users with certain titles (ie there is a many to many between titles and lessons). I can get the lessons with the correct title requirement using Auth::user()->title->lessons.
Question is how I get all this together. The best I've come up with this far is the following:
$title = Auth::user()->title;
$lessons = Lesson::where('active', true)
->whereIn('id', $track->lessons->pluck('id'))
->where(function ($query) use($title) {
$query->whereIn('id', $title->lessons->pluck('id'))->orWhere('limited_by_title', false);
})
->get();
...which is crap ugly, clearly suboptimal and (for some reason I really don't understand) also won't work (I don't get the lessons my title entitles me to in my list). Been struggling for quite some hours now, I get the feeling that I'm overcomplicating, first plucking id's and then using them in a whereIn() can't possibly be a good way of doing this.
So I can easily enough get a collection of lessons in the track, and I can get a collection of lessons belonging to the title, but how do I get all objects that exist in both those collections?
Using whereHas() is the answer to your concerns about plucking IDs. Instead of running additional queries to retrieve IDs, whereHas() will attach the constraint to the original query as a subquery on the related tables.
Breaking the query down to its parts:
1: Answered
2: Assuming the inverse of $track->lessons is $lesson->tracks, and $track is coming from code you didn't include:
$lessons = Lesson::whereHas('tracks', function ($query) use ($track) {
$query->where('id', $track->id);
})
3: Assuming the inverse of $title->lessons is $lesson->titles:
$lessons = Lesson::where(function ($query) use ($title) {
$query->whereHas('titles', function ($query) use ($title) {
$query->where('id', $title->id);
})
->orWhere('limited_by_title', false);
})
Combined back into one:
$track = ???;
$title = Auth::user()->title;
$lessons = Lesson::where('active', true)
->whereHas('tracks', function ($query) use ($track) {
$query->where('id', $track->id);
})
->where(function ($query) use ($title) {
$query->whereHas('titles', function ($query) use ($title) {
$query->where('id', $title->id);
})
->orWhere('limited_by_title', false);
})
->get();
If this still doesn't give the results you were expecting, you can examine the full query being run by replacing get() with toSql(). Sometimes working from the ORM as a starting point instead of the SQL can lead you down the wrong path. For even more detail to debug and understand the queries being run, you can enable query logging: https://laravel.com/docs/5.7/database#listening-for-query-events
intead of where use whereHas on "titles" relationship
$title = Auth::user()->title;
$lessons = Lesson::where('active', true)
->whereIn('id', $track->lessons->pluck('id'))
->whereHas('titles',function ($query) use($title) {
$query->whereIn('id', $title->pluck('id'))
->orWhere('limited_by_title', false);
})->get();
First of all complicated, really complicated. Your table structure needs serious modification to make it easier.
However, considering you don't want to go down that road, you could do it simpler by using join
Assuming you have following table structure:
users
titles (has user_id foreign key)
lessons (has title_id foreign key)
tracks (has lesson_id foreign key)
$trackName = $request->input('track_name');
$title = Auth::user()->title;
$lessons = Lesson::join('tracks', 'lessons.id', '=', 'tracks.lesson_id')
->join('titles', 'lessons.title_id', '=', 'titles.id')
->where('lessons.active', true)
->where('tracks.track_name', $trackName)
->where(function ($query) use($title) {
$query->where('titles.id', $title->id)->orWhere('lessons.limited_by_title', false);
});
dd($lessons);
That is of course if your users table and titles have one to one relationship otherwise pluck all title_ids and use whereIn instead of where for titles.id query.
I hope you have enough understanding of laravel framework to understand and implement this solution.
Sorry, I don't have enough time to proofread or give more details.
Good luck!
Good luck if you need pagination after that :p I doubt simple ->paginate() will work :D
I hope it helps
I'm stumped on this one. I can search an array of ids but I want to search the reverse. I have models with lists of ids as "with_ids" attribute and want to search similar to mongo db where id is in that array of ids.
For example
db.conversations.find( { with_ids: { $in: [id] } } )
How do I do that with Laravel and mysql/Eloquent?
$conversations = Conversation::with('messages.user')->where('with_ids', $id)->orWhere('created_by', $id)->get();
it's the where('with_ids', $id) I can't figure out... Any suggestions??
To clarify further:
I need to find if the user is participating in other conversations as well as the ones he created. The with_ids is a json serialized array f.ex [1,2,23,12] how do i search inside the array attribute?
Not sure I understand. Did you try with whereIn();
$conversations = Conversation::with('messages.user')
->whereIn('with_ids', [$id])
->orWhere('created_by', $id)
->get();
Edit
$conversations = Conversation::with('messages.user', function($query) {
$query->where('id', $id); // user_id ?
})
->orWhere('created_by', $id)
->get();
After MUCH digging I finally found a solution. FIND_IN_SET in a whereRaw query did the trick. In case anyone else has come upon this issue, hope it helps.
it's not pretty because for some reason quotes need to be stripped out
Conversation::where('created_by', $id)->orWhereRaw("FIND_IN_SET(?, REPLACE(REPLACE(REPLACE(with_ids, '\"', ''), '[', ''), ']','')) > 0", $id)->get()
That's the final query to get aggregated conversations where user either created or is part of.
Hey guys how you doing?
I'm trying to simply find by id and at the same time guarantee that a column from a relationship table is with a value.
I tried a few things but nothing works.
$tag = Tag::find($id)->whereHas('posts', function($q){
$q->where('status','=', 1);
})->get();
Also:
$tag = Tag::whereHas('posts', function($q) {
$q->where('status','=', 1);
})->where('id','=', $id)->get();
Can you help me?
It is a simple thing but I can't manage to do it...
You need to read on Eloquent docs. Learn what's find, first, get for that matter.
Your code does what you need, and more (a bit wrong though) ;)
$tag = Tag::find($id) // here you fetched the Tag with $id
->whereHas('posts', function($q){ // now you start building another query
$q->where('status','=', 1);
})->get(); // here you fetch collection of Tag models that have related posts.status=1
So, this is what you want:
$tag = Tag::whereHas('posts', function($q){
$q->where('status','=', 1);
})->find($id);
It will return Tag model or null if there is no row matching that where clause OR given $id.
Have you checked Query Scope ?
You can do this:
$tag = Tag::where('status', '=', 1)
->where('id', '=', 1, $id)
->get();