I am stuck at one situation where i have to insert record only if composite columns values are not exist with given user id; something like
UsersInvited::firstOrCreate([
'invited_by_id'=>$eventDetails->user_id,
function($query) use ($thisEmail,$thisPhone){
return $query->where('email',$thisEmail)->orWhere('phone',$thisPhone);
}
]);
If user_id =3 is inviter of event and some members are not registered in portal then they have to preserve in one table so that in future if invited user will install the app then i have to make it event member automatically.
Any other user can also invite the same members multiple times.
So in above case i wants to check that thisEmail = abc#gmail.com is invited by user_id = 3 or thisPhone=8945454545 is invited by same inviter then no need to make entry.
Is it possible in laravel - eloquent firsOrCreate ()?
Using the code to get the method firstOrCreate():
public function firstOrCreate(array $attributes, array $values = [])
Hence: you can not append extra query parameters to this method.
In your case, you should try and find the matching record yourself. If it doesnt exist, you can create one. For example:
$attributes = ['invited_by_id' => '..'];
$instance = Model::where($attributes)->where(..)->orWhere(..)->first();
if( is_null ( $instance ) ) {
$instance = Model::create($attributes);
}
Good luck!
Related
I had an admin panel where 3 types of user are there Admin, Teacher and Student. Now I want that when student logged in he/she only see data uploaded by admin
According to his/her class and class group like class=10th and group=computer science. I have no idea how can i get this type of thing. I had used following code
$paper = Paper::where('paper_type','PaperSolution' && 'class',Auth::user()->class)->get();
this is not working properly as I am dumping data
dd($paper);
it is giving me null as answer.
you can use more granular wheres passed as array:
$query->where([
['column_1', '=', 'value_1'],
['column_2', '<>', 'value_2'],
[COLUMN, OPERATOR, VALUE],
...
])
Try this
$paper = Paper::where([['paper_type','PaperSolution'],['class', Auth::user()->class]])->get();
dd($paper);
OR
$paper = Paper::where([['paper_type','=','PaperSolution'],['class','=', Auth::user()->class]])->get();
dd($paper);
Reference for where query using array
ReferenceLink
Please refer to Laravel collection docs to correct syntax.
$paper = Paper::where('paper_type','PaperSolution')
->where('class', Auth::user()->class)
->get();
I did not exactly understand structure of your DB, but at first you need to have corresponding columns to then write any query. Your first option is uploaded by admin so in your uploads table (which is Paper model as I can see from your text) you should have something like uploader_role. Then you have student_class and student_group options. I want to get your attention in fact that this 2 options are users table columns NOT uploads (Paper). So you need to check some permissions of users, then get papers uploaded by admins. You can do that with middleware or just in your controller
$user = Auth::user();
if ($user->class == 10 && $user->group == 'computer_science') {
$papers = Paper::where('uploader_role', 'admin')
// you can add extra where options if that columns exist in papers table and you need to filter them also by class and group
->where( 'class_that_has_permissions', $user->class)
->where( 'group_that_has_permissions', $user->group)
->get();
return $papers;
}
abort(404);
Also be careful with columns that have name class that can return real user class name like App\User, try to use class_name or class_number.
really need your help here. ( I don't know what I want is possible on Eloquent )
Lets pretend this Relationship: One user can have many Childs
Note: Ignore problems in the code, this is just an example.
Now lets add some code into it.
// Return HasMany Object Instance from Eloquent.
$hasMany = $user->childs()
// Perform Mass Update.
$hasMany->update(['born_at' => Carbon::now])
So far nothing wrong with it, the first line returns an HasMany Object ( Documentation )
The problem is that Mass Updating touches my Model's timestamps ( created_at, updated_at ) and specially for this update I don't want it to do that.
Disabling it on the Model is not an option for me I do use the timestamp touch normally but I don't want to use in this case.
Neither I want to iterate over the Collection ( $user->childs ) because I have many rows to update and its an overhead to generate one query for each Model to update.
What I expect for an answer to this question: Simple, I just want an way to turn off the timestamps to do the mass updating or something like that.
( Normally on a single Model you can disable it like this: $model->timestamps = false, but this will not work here because hasMany instance does not have this attribute. )
You could set the property default of the model to false. So in you're model class you will have:
public $timestamps = false;
But this will always disable the timestamps until je use:
$model->timestamps = true;
In case someone finds this through Google:
One possible solution is to Fallback to the base QueryBuilder:
(new Child)
->newQuery()
->toBase()
->where('parent_id', $model->id)
->update([
'born_at' => Carbon::now,
]);
Of course, one could just use here something like DB::table(...)...
I've got a many to many relationship between a student and an institution_contact.
students should only ever have two institution_contacts and I have an attribute on the pivot table named type to be set as 1 or 2.
So, my pivot table looks like this:
institution_contact_student: id, institution_contact_id, student_id, type
I've run into difficulty in deciding how to approach the issue of adding/updating the pivot table. Let's say I have 100 students and I want to assign them a contact with the type of 1.
My current solution is to delete the contact then add it:
$students = Student::all(); // the 100 students
$contactId = InstitutionContact::first()->id; // the contact
foreach ($students as $student) {
// remove existing contact
$student
->institutionContacts()
->newPivotStatement()
->where('type', 1)
->delete();
// add new contact
$student
->institutionContacts()
->attach([$contactId => ['type' => 1]]);
}
However, I'm thinking that this is going to hit the database twice for each student, right? So would I be better off creating a model for the pivot table and removing all entries that matched the student id and the type then simply adding the new ones? Or would creating a model for the pivot table be considered bad practice and is there a better way of accomplishing this that I've missed?
Please note the reason I'm not using sync is because I'm relying on the type attribute to maintain only two contacts per student. I'm not aware of a way to modify an existing pivot without causing issues to my two contacts per student requirement.
Edit:
Instead of creating a model I could run the following code to perform the delete using DB.
DB::table('institution_contact_student') // the pivot table
->whereIn('student_id', $studentIds)
->where('type', 1)
->delete();
If I have understood your question correctly then you can use the updateExistingPivot method for updating your pivot table.But first of course you have to define the pivot in your relationship. For instance,
public function institutionContacts(){
return $this->belongsToMany('institutionContact')->withPivot('type');
}
after this, all you have to do is use the following code:
$student
->institutionContacts()
->updateExistingPivot($contactId, ["type" => 1]);
Hope this helps.
I'm trying to figure out a way to combine data from two tables into a single variable that I can then send to my view. I'm using Authority as my authentication bundle and so I have the following tables set up: users, roles, role_user. I want to get the following data into a single variable.
From the users table:
id, name, email
From the roles table:
name
The following returns all the user data in the users table:
$users = User::all();
But, I want to make a chain that can get the related data stored in the roles table? I want all users and all of each users roles together.
And while I can find examples that help get related data for a single record I haven't been able to find any reference to retrieving entire tables with related data.
Thanks.
$users = User::with('roles')->get()
Eager loading is what you are looking for, read the docs :)
Im not 100% sure what you are after, I think you should make relations with Eloquents methods. But if you are looking for a way to just merge the data returned by two models you could do the following:
$users = User::all();
$roles = Roles::all();
$array = array_merge($users->toArray(), $roles->toArray());
return Response::json($array);
You could make the model calls so that they return exactly what you are after and then merge them together. If you want one Model to return something specific just make a function for it.
You need to use something like that:
$user = User::get();
$roles = Roles::get();
$user .= (object) $roles; //because of that both them are object array and we have to combine them as object array...
than you can pass the data to View
return View:make('templatefile')//or Redirect to_route whatever
->with('user', $user);
But the best way is belongs_to in your case. Please read the documentation:
http://laravel.com/docs/database/eloquent#relationships
I followed doctrine documnetation to get started. Here is the documentation.
My code is
$User = Doctrine_Core::getTable("User")->find(1);
when I access relations by $User->Phonenumbers, it works. When I convert User object to array by using toArray() method, it does not convert relations to array. It simply display $User data.
Am I missing something?
By using the find method you've only retrieved the User data which is why the return of toArray is limited to that data. You need to specify the additional data to load, and the best place to do this is usually in the original query. From the example you linked to, add the select portion:
$q = Doctrine_Query::create()
->select('u.*, e.*, p.*') // Example only, select what you need, not *
->from('User u')
->leftJoin('u.Email e')
->leftJoin('u.Phonenumbers p')
->where('u.id = ?', 1);
Then when toArray'ing the results from that, you should see the associated email and phonenumber data as well.
I also noticed an anomaly with this where if you call the relationship first then call the ToArray, the relationship somehow gets included. what i mean is that, taking your own eg,
$User = Doctrine_Core::getTable("User")->find(1);
$num= $User->Phonenumbers->office; // assumed a field 'office' in your phone num table
$userArray = $user->toArray(true);
In the above case, $userArray somehow contains the whole relationship. if we remove the $num assignment it doesn't.
am guessing this is due to doctrine only fetching the one record first, and it's only when you try to access foreign key values that it fetches the other related tables