I've been getting along slowly but surely with Laravel / Eloquent, but am now stumped:
entries Table:
id
user_id
group_id
content
users Table
id
faculty_id
name
group Table:
id
name
faculty Table
id
name
So entries are related to users and groups, and users are related to faculties - I've set up the basic relationships without a problem, and this enables me to find all entries by users from a certain faculty:
Faculty Model:
public function entries()
{
return $this->hasManyThrough('Entry','User');
}
Controller:
Faculty::find(Faculty-ID-here)->entries;
However, I now need to find entries by users that are from a certain faculty AND from a certain group, and I don't know how to write this combination this in Eloquent.
Hope that makes sense! Any suggestions?
Something like:
Entries::whereHas('user', function($q) {
$q->where('faculty_id', $facultyID);
})
->where('group_id', $groupID)
->get();
Assuming you have set up your 'user' relationship.
Related
I would like to begin with the messy things I have done with the database architecture.
I have put the fields title, description, donation_amount, in the users table which should have been in a different table. But now if I change this, I would have to change a lot of things.
The ManyToMany relation is already setup between these tables in laravel. I tried to join tables that query builder as well.
There are different roles in the application. We will talk specifically about Donor When a Donor registers in the Application. It selects multiple categories and sub_categories which stores in selections table.
Now when a donor logs in to the application. It should only get the records based on the categories selected.
Now I am confused how can I retrieve the users based on the logged in users selected categories and sub_categories.
I have tried joining the tables which works well but it is getting all the results against the joined tables.
DB::table("users")->select('users.*')->from('categories')
->join('selections','categories.id', '=', 'selections.category_id')
->join('users', 'users.id','=', 'selections.user_id')
->join('sub_categories','sub_categories.id', '=', 'selections.sub_category_id')
->where('users.status','approved')->paginate(6);
Relations in the model Category
public function users() {
return $this->belongsToMany(User::class,'selections');
}
Relations in the model User
public function categories() {
return $this->belongsToMany(Category::class,'selections');
}
If there is a way of doing this calling eloquent relationships. I would love the help else It would be evenly nicer to get the job done with the joins I have already implemented.
Use has-many-through relationship.
https://laravel.com/docs/9.x/eloquent-relationships#has-many-through
In other way you can query like this :
DB::table("users")->select('users.*')
->whereIn('users.id',function($query) use ($specific_category_id){
$query->select(''user_id')->from('selections')->where('category_id',$specific_category_id)
})
->where('users.status','approved')->paginate(6);
I have two tables, one is Users and the other is Loans. These have one to many relationship between them. One user can have many loans and one loan belongs to one User.
Now I want to get the user from the list of loans.
Loan::where('user_id', $user)->get()
This give me repeated array of sample user associated to the multiple loans. But I want to get only a single record, like many loans associate to one user.
I assume you already set up relationships between User & Loan Models
// App\User
public function loans() {
return $this->hasMany('App\Loan');
}
// App\Loan
public function user() {
return $this->belongsTo('App\User');
}
Get user from the list of loans
$user = Loan::where('user_id', $id)->first()->user;
// eager loading version
$loansWithUsers = Loan::with('user')->where('user_id', $id)->get();
Loans associate to one user
$loans = User::findOrFail($id)->loans;
// eager loading version
$userWithLoans = User::with('loans')->findOrFail($id);
For what I understand in your question, you want to get the user together with it's loan right ? Your query should like this.
$user_loans = User::with('loans')->where('id', $user_id)->get();
Get the user informations from loan table
Loan::where('user_id', $user_id)->with('user')->get()
Ge the users from loans table depends on brach id
Loan::where('branch_id', $branch_id)->with('user')->get();
I'm new to Laravel and trying to soft-delete both rows from two tables.
Vehicles table,
id
license
brand
is_taken
Taken_bies table,
id
name
phone
vehicle_id
In vehicles table, if is_taken is true, I grab the id of vehicle and fill it to vehicle_id from taken_bies table with other information.
In my TakenBy model, I've implemented relationship as follow:
public function vehicle() {
return $this->belongsTo('App\Vehicle');
}
My Requiremnet:
If I soft-delete the vehicle, I want to delete the related taken_bies information from taken_bies table. How can I achieve that? I'm using Laravel 5.8. Thank you.
you can delete it like below
$vehicle = Vehicle::find(1);
$vehicle->taken_bies()->delete();
$vehicle->delete();
I have tables:
user
id
name
companies
id
name
company_user
company_id
user_id
Tables has Many To Many relationships.
As it complicated relationship for me, I can't find way how to make this limit, when user can see companies that was created by this user. (probably not well experienced)
Now I have this, but user can see any company
CompanyController:
public function show($company_id)
{
$company = Company::where('id', $company_id)->firstOrFail();
return view('company.settings', compact('company'));
}
So tip me please how to make user can see only companies created by this user.
You can do this:
public function show($company_id)
{
$company = auth()->user()->companies()->findOrFail($company_id);
return view('company.settings', compact('company'));
}
It will scope the company to the currently logged in user (through the many-to-many relationship on the User model). If none is found, it will return 404.
Since it many to many relation, you can map one company to many users, also map one user to many companies. Check if you have not mistakenly assign the company to many user
Also the above code can be written the way
public function show($company_id)
{
$company = Company::findOrFail($company_id);
return view('company.settings', compact('company'));
}
I'd like your input on this.
I have a Customer_table with a field name. I have another table called Reservation_table with a Customer_name field.
How can I relate them in such a way that I'd see all the bookings by the specific customer?
In Reservation_table you should have a field(foreign key) userid in order ta have a user for each reservation.
You can using primary key - foreign key relationship to relate/join those two tables. Also, instead of having a 'Customer_name' field as your FK referring to 'name' field in 'Customer_table' table, it is better to have an id (unique) generated for each customer; This way you can have an efficient way of uniquely identifying and relating customer across tables; can save space on Database side as well. Hope this helps!
If you want to use eloquent you must first define a relationship.
One reservation belongs to a user. Here is how to define the relationships:
Inside the Reservation model:
public function user()
{
return $this->belongsTo('App/User'); //User model
}
To define the inverse you do the following:
Inside User model:
public function reservations()
{
return $this->hasMany('App/Reservation'); // Reservation Model
}
Now you can do the following in your controller:
$reservations = Auth::user()->reservations;
Now you have all reservations by the currently logged in user.
I am not sure if I got the question right so ask away.