Laravel: how to get data with post - php

Question

I've created a function in my routes that take some data from a view and send to another view
Route::post('/trans', function(){
$j = Input::get('r');
return view('movs.create')->with($j);
});
this route take the data from this form
<form action="/trans" method="POST">
#csrf
<div class="input-group">
<input type="hidden" class="form-control" name="r" value={{$cooperado->id}}>
<button type="submit" class="btn btn-primary">
<span>+</span>
</button>
</span>
</div>
</form>
but cant set the data in this other form on 'movs.create'
<form method="post" action="{{ route('movs.store') }}">
<div class="form-group">
#csrf
<label for="name">ID COOP:</label>
<input type="number" class="form-control" name="id_coop" readonly/> <-- data must be setted here
</div>
<div class="form-group">
<label for="price">VALOR MOVIMENTACAO:</label>
<input type="number" step=0.01 class="form-control" name="valor"/>
</div>
<button type="submit" class="btn btn-primary">Add</button>
</form>
when i try to set the data in id_coop input, laravel says that the variable doesnt exists

Answer 1

To set data in the create form, you may need to add a value attribute to the id_coop input:
<input type="number" class="form-control" name="id_coop" value="{{ $j }} readonly/>
Also, ->with() needs to be a key (variable name) and value:
Route::post('/trans', function(){
$j = Input::get('r');
return view('movs.create')->with('id_coop', $j);
});
This would mean you use {{ $id_coop }} instead.

Answer 2

with works with key value pair
Route::post('/trans', function(){
$j = Input::get('r');
return view('movs.create')->with('j',$j);
// or return view('movs.create', compact('j')); // it will extract in
//blade as $j
// or return view('movs.create', ['j' => $j]);
});
// you can fetch that data in blade as {{$j}}
<input type="number" class="form-control" name="id_coop" value="{{$j ?? ''}}" readonly/>
Example of with,
return view('greeting')->with('name', 'Victoria'); // name as key and Victorial as value.
{{$j ?? ''}} if data is not set then '' value.

Answer 3

//controller
public function Postdata(Request $request){
$data['j'] = Input::get('r');
return view('movs.create',$data);
}
//route
Route::post('/trans','yourController#Postdata');
//your view
<form method="post" action="{{ url('/store') }}">
<div class="form-group">
#csrf
<label for="name">ID COOP:</label>
<input type="number" class="form-control" name="id_coop" value="{{ $j }}" readonly/> <-- data must be setted here
</div>
<div class="form-group">
<label for="price">VALOR MOVIMENTACAO:</label>
<input type="number" step=0.01 class="form-control" name="valor"/>
</div>
<button type="submit" class="btn btn-primary">Add</button>
</form>
//store route
Route::post('/store','yourController#Savedata');
hope this helps