I have joined two tables in Clint table controller and Appointment table as below image and dd function showing the data already.
Here is my controller:
and here is result of dd():
but in the view page it's an empty field:
and here is available I am using in the view:
I have seen your controller image and in join statement mistake.
When you join your appointment table to the clients table then you should use foreign keys.
public function show(Client $client) {
abort_if(Gate::denies('client_show'), Response::HTTP_FORBIDDEN, '403 Forbidden');
$client = DB::table('clients') ->join('appoinments', 'clients.id', '=', 'appoinments.clint_id') ->select('clients.*', 'appoinments.start_time', 'appoinments.finish_time') ->get();
return view('admin.clients.show', compact('client'));
}
I assume in the appointment table you have clint_id.
The variable $client that you are passing to your view is from your Route Model Binding. $clients is the result of your query with the join to appointments which provides the fields start_time and finish_time. You are showing us the output of a dd on $clients which includes those fields, but passing $client to your view which most likely does not have such fields.
You could adjust what you are passing to your view to fix this:
return view('admin.clients.show', [
'client' => $clients,
]);
I am not sure what your purpose is with this method though as the route parameter doesn't end up being used. You probably want to be using that route parameter to filter your query. Though this could be a good place to try using relationships instead of directly joining with query builder.
Also, please do not put up pictures of code. Please edit your question and include the code into the question if you can. Thanks.
Laravel 6.x - Docs - Routing - Route Model Binding
Related
I'm new to Laravel. I am developing a project. and in this project I have 4 tables related to each other
-Users
-Orders
-OrderParcels
-Situations
When listing the parcels of an order, I want to get the information of that order only once, the user information of that order once again, and list the parcels as a table under it. so far everything ok. but I also want to display the status of the parcels listed in the table as names. I couldn't add the 4th table to the query. do you have a suggestion? I'm putting pictures that explain the structure below.
My current working code is
$orderParcels = Orders::whereId($id)
->with('parcels')
->with('users:id,name')
->first();
and my 'orders' model has method
public function parcels(){
return $this->hasMany(OrderParcels::class);
}
public function users(){
return $this->hasOne(User::class,'id','affixer_id');
}
Note[edit]: I already know how to connect like this
$orderParcels = DB::table('order_parcels as op')
->leftjoin('orders as o','op.orders_id','o.id')
->leftjoin('users as u','o.affixer_id','u.id')
->leftjoin('situations as s','op.status','s.id')
->select('op.*','o.*','u.name','s.situations_name')
->where('op.orders_id',$id)->get();
but this is not working for me, for each parcels record it returns me orders and user info. I want once orders info and once user info.
Laravel provides an elegant way to manage relations between models. In your situation, the first step is to create all relations described in your schema :
1. Model Order
class User extends Model {
public function parcels()
{
return $this->hasMany(OrderParcels::class);
}
public function users()
{
return $this->hasOne(User::class,'id','affixer_id');
}
}
2. Model Parcel
class Parcel extends Model {
public function situations()
{
return $this->hasOne(Situation::class, ...);
}
}
Then, you can retrieve all desired informations simply like this :
// Retrieve all users of an order
$users = $order->users; // You get a Collection of User instances
// Retrieve all parcels of an order
$parcels = $order->parcels; // You get a Collection of User instances
// Retrieve the situation for a parcel
$situations = $parcel->situations // You get Situation instance
How it works ?
When you add a relation on your model, you can retrieve the result of this relation by using the property with the same name of the method. Laravel will automatically provide you those properties ! (e.g: parcels() method in your Order Model will generate $order->parcels property.
To finish, in this situation where you have nested relations (as describe in your schema), you should use with() method of your model to eager load all the nested relation of order model like this :
$orders = Orders::with(['users', 'parcels', 'parcels.situations'])->find($id)
I encourage you to read those stubs of Laravel documentation :
Define model relations
Eager loading
Laravel Collection
Good luck !
Use join to make a perfect relations between tables.
$output = Orders::join('users', 'users.id', '=', 'orders.user_id')
->join('order_parcels', 'order_parcels.id', '=', 'orders.parcel_id')
->join('situations', 'situation.id', '=', 'order_parcels.situation_id')
->select([
'orders.id AS order_id',
'users.id AS user_id',
'order.parcels.id AS parcel_id',
'and so on'
])
->where('some row', '=', 'some row or variable')->get();
When I eagerly load a straightforward Eloquent relationship I can limit the columns retrieved using the following syntax:
MyModel::with(myRelation:id,col_2,col_3);
When I want to constrain the members of the relationship, I do this:
MyModel::with(['myRelation' => function ($query) {
$query->where([
['field_1', 'a_value'],
['field_2', 'b_value']
]);
}]);
But that loads all columns of the related models. I tried replacing the key myRelation with the full syntax, myRelation:id,col_2,col_3, but it throws an error which says the relation name is not found.
I also tried adding the following methods to the $query:
->select('id', 'col_2', 'col_3')
or
->addSelect('id', 'col_2', 'col_3')
or
->get('id', 'col_2', 'col_3')
None of these were successful.
One option could be keeping all the columns (except id, col_2, col_3) hidden in your original model MyRelation is pointing to.
protected $hidden = ['col_4', 'col_5',...];
You could also change the relationship definition in your model MyModel:
public function myRelation()
{
return $this->belongsTo('MyRelation')->select(array('id', 'col_2', 'col_3'));
}
But, in general, this should work:
MyModel::with(array('myRelation'=>function($query){
$query->select('id','col_2', 'col_3)
->where([
['field_1', 'a_value'],
['field_2', 'b_value']
]);
}))->get();
Remember, you have to include the joining key (say id) in the select list above.
Ok, so to get this to work, I had to:
include the foreign_key in the list of selects (thanks, #ankitPatel), and
pass the parameters to the select statement as an array, as follows:
->select(['id','foreign_key','col3','col4'])
I am using laravel eloquent. I have fetched data from two table using eloquent.
I have post table and chat table. For post table I have model Post.php and for chat table I have model Chat.php. Here is the the eloquent relation I have created to fetch chat for individual post for a user.
in Post.php
public function TeamMessage()
{
return $this->hasMany('App\Chat','post_id');
}
And in Chat.php
public function ChatRelation()
{
return $this->belongsTo('App\Post');
}
it is working perfect. But this relation fetch all messages for a specific post. I want to fetch all unread message from chat table. I have a column named unread in chat table.
Now my question is how I can fetch only unread message for a specific post.
While the other answers all work, they either depend on scopes (which are very useful in many circumstances) or on you having already instantiated an instance of $post, which doesn't let you eager load multiple posts with their messages.
The dynamic solution is this, which will let you fetch either 1 or more posts and eager load their messages with subquery:
$posts = Post::with(['TeamMessage' => function ($query) {
$query->where('unread', true); // This part applies to the TeamMessage query
}])->get();
See in documentation
Edit:
If you, however, want to filter the posts, to only show those that have unread messages, you need to use whereHas instead of with:
$posts = Post::whereHas(['TeamMessage' => function ($query) {
$query->where('unread', true); // This part applies to the TeamMessage query
}])->get();
More in the documentation.
You can also chain whereHas(...) with with(...).
For querying relationships, you have to call them as functions instead of properties, like this:
$unreadPosts = $post->TeamMessage()->where('unread', true)->get();
For more information on this you can take a look at the docs.
You need to create a local scope on your model, information on local scopes can be found here: https://laravel.com/docs/5.6/eloquent#local-scopes
public function scopeUnread($query)
{
return $query->where('unread', 1);
}
Then in your controller/view
$unread = $yourmodel->unread()
First I would change your relation names to the name of the entity in lower case:
in Post.php
public function chats()
{
return $this->hasMany('App\Chat','post_id');
}
And in Chat.php
public function post()
{
return $this->belongsTo('App\Post');
}
public function scopeUnread($query)
{
return $query->where('unread', 1);
}
Then you can use
$post->chats()->unread()->get();
I already looked at this post but I can't seem to make it right:
Laravel form model binding
I get this error:
https://gyazo.com/2ea7b7bb6a19d588829447ee1a92053e I use laravel 5.2
for this.
some screenshots:
https://gyazo.com/1b2c35e660dfe1aae69a02703733d083
https://gyazo.com/3d6f294473f6e54650a4a4403dc2777e
https://gyazo.com/a59aebc7362f51f9ac27852ea032f962
To expand on my comment:
Your problem is here:
$user = User::where('id', $id) // Here more specifically, Laravel does not know if you mean id of users table or details table
->leftJoin('user_details', user_details.user_id', '=', 'users.id')
->first();
Rewrite your where statement like this:
$user = User::where('users.id', $id)....
And it should work. Basically since you're joining 2 tables and they both got id you need to specify which id you want to query by.
I'm new to Laravel and I'm stuck. This is what I am struggling with:
$questions = Question::find($id)->quiz(); // this code retrieves data from
// the table using the primary key
// in the table. The is a parameter
// that is passed via get.
This is what I have right now:
$questions = Question::where('quiz_id', '=', $id)->quiz();
This is the error I get:
Call to undefined method Illuminate\Database\Query\Builder::quiz()
What I want to do:
I want to run a query to get data from my database table using the foreign key in the table not the primary key, I also want to be able to use relations with this as seen from what I tried to do above.
Edit: Added the Question Model
<?php
class Question extends Eloquent{
protected $table = 'quiz_questions';
public function quiz()
{
return $this->belongsTo('Quiz');
}
}
Calling the quiz() function from Question::find($id)->quiz() will return a Query Builder instance allowing you to query the parent of the Question, its not going to return any data at that point until you call ->get() or another method that actually executes the query.
If you're wanting to return all the questions belonging to a certain quiz then you can do it like this.
$questions = Question::where('quiz_id', $id)->get();
This will return an Eloquent\Collection of the results for all questions with a quiz_id that is equal to $id.
If you've setup the relations between the Quiz and Questions then you can also do this using the Laravel relations.
$quiz = Quiz::findOrFail($id);
foreach($quiz->questions as $question)
{
// Do stuff with $question
}
Laravel will automagically pull Questions from the database that belongTo the Quiz you've already got from the database, this is known as eager loading http://laravel.com/docs/4.2/eloquent#eager-loading
Wader is correct, just calling where() will not execute your query. You either call get() and get an iterable result or use first() if you only want one result.
$quiz = Question::where('quiz_id', '=', $id)->first()->quiz();