How to get a value from controller to view in laravel? - php

Question

I have a simple input form with a text input field and a submit button. I am trying to get the value from the input field to be displayed again on the same page after the submit button is clicked. So far laravel always throws an error that the variable is undefined.
Route:
Route::get('/find/names', "FindController#get_name")->name('names');
Controller
public function get_name(){
$name = Input::get('name_by_user');
return $name;
}
view
<form role="form" method="GET">
<div class="row">
<div class="form-group">
<div class="input-group">
<input type="text" name="name_by_user"/>
<span class="input-group-btn">
<button class="btn search-button" type="submit">
<span aria-hidden="true">
<span>Search</span>
</button>
</span>
</span>
</div>
</div>
</div>
</form>
display name after submitting: {{$name}}

Answer 1

I would do something like this
Route
Route::name('names')->get('/find/names', "FindController#get_name");
Controller
public function get_name(){
$collection = Input::all();
$name = $collection->pluck('name_by_user');
return view('view_file_in_resources', compact('name'));
}
Now you will have a $names collection in your view.
But if you only want to fetch result from one row, you controller should look like this:
public function get_name($name){
$name = Input::where('name_by_user', $name)->get();
return view('view_file_in_resources', compact('name'));
}
And your routes file
Route::name('names')->get('/find/names/{name}', "FindController#get_name");

Answer 2

When generating a view inside a controller for a route, you can do the following in a function to return a view with data depending on whether it exists.
public function showNameView() {
if(is_null(Input::get('name_by_user'))
{
return view('my.view')->with(['name' => Input::get('name_by_user')]);
}
else
{
return view('my.view')->with(['name' => Input::get('name_by_user')]);
}
}

Answer 3

You need to return the same view:
public function get_name(Request $request)
{
return view('same.view', ['name' => $request->name]);
}
Or you can redirect back:
return redirect()->back()->with('name', $request->name);
And display name like using session data:
#if (session()->has('name'))
{{ session('name') }}
#endif