Reusing a Controller method for multiple actions in Laravel - SimplestWeb (https://simplestweb.in/blog/reusing-a-controller-method-for-multiple-actions-in-laravel)

edit.blade.php

<div class="modal" id="modalEditUser" tabindex="-1" role="dialog" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="mb-0">Edit User - {{ $edit->name }}</h5>
      </div>
      <div class="modal-body">
        <form method="POST" action="{{ route('users.update', ['users' => $edit->id]) }}">
          @method("POST")
          @csrf
          
          {{-- Your usual form to edit user's detail --}}
          
        </form>
      </div>
    </div>
  </div>
</div>

@push('scripts')
  <script>
    window.addEventListener('DOMContentLoaded', function (e) {
      $('#modalEditUser').modal('show');
    });
  </script>
@endpush

index.blade.php

@extends('admin')
@section('content')

  {{-- All your other markup to display users --}}


  {{-- Below shows a way to add the parameter to the url --}}
  <a href="{{ route('users.index', ['edit' => $user->id]) }}">Edit User</a>


  {{-- The template the model is included only when the veriable is set --}}
  @includeWhen($edit, 'modals.users.edit')
@endsection

UsersController.php

class UsersController
{
    // ......

    public function index(Request $request) {
        $edit = null;

      	// We check if the edit parameter is set, if so we find the user with that ID
        // This $edit variable can be used in our template
        if ($request->has('edit')) $edit = User::where('id', $request->query('edit'))->first();

        $users = User::all();
        return view('users.index', compact('users', 'edit'));
    }

    // ......
}