Show modal after redirection, laravel - php

Question

I am trying to show a modal after redirection.
I have seen all the ways on the net but nothing worked.
Controller
return redirect()->back()->with('code');
Blade
#if(session('code')) )
<script>
$(function() {
$('#verify_code').modal('show');
});
</script>
#endif
<div id="verify_code" class="modal custom-modal fade" role="dialog">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h3 class="modal-title">Verify Phone Number</h3>
</div><!-- end modal-header -->
<div class="modal-body">
<form method="POST" action="{{ url('verify_code') }}">
#csrf
<div class="form-group">
<input type="number" class="form-control" id="code" name="code" placeholder="Enter verification code" required/>
</div>
<button class="btn btn-orange btn-block">Verify Phone Number</button>
</form>
</div><!-- end modal-bpdy -->
</div><!-- end modal-content -->
</div><!-- end modal-dialog -->
</div><!-- end edit-profile -->

Answer 1

The with function on redirect can have two parameters, a key and a value. You are passing just a key, 'code' and by default Laravel will set the value to null.
So, when you fetch the value of session('code'), this will return null. And php views null as a false value, so your condition is never true.
To fix this, pass a value to your with function:
return redirect()->back()->with('code', true);

Answer 2

i think better approachment like this,
In Controller
Session::flash('code','randomvalue');
return redirect()->back();
and then change your blade like this
//checking if the session has 'code'
#if(Session::has('code'))
your script
#endif

Answer 3

Your code variable is probably never set when it arrives in your view.
If your variable is defined in your code before you try to return it. You can use compact() function to pass it to your view. Like so:
return redirect()->back()->with(compact('code'));
Compact creates an array containing variables and their values.
Or with just an array:
return redirect()->back()->with([
'code' => $code
]);
Once your variable is passed to your view, you can just test it. Assuming $code contains a boolean or something not empty:
#if ($code)
...
#endif