Laravel 7 conditional form method POST | PUT

Question

Hi I'm using Laravel 7 and trying to submit based on the following condition:

if isset($category) == true then the method should be PUT
if isset($category) == false then method should change to POST

Update method which is PUT works fine with a response 302 changed from POST to PUT. The problem is if I'm going to submit via POST method based on given condition it says:

Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException
The PUT method is not supported for this route. Supported methods:GET, HEAD, POST.

Any suggestion how to do it, in the same form?

Here my codes:

<form action="{{ isset($category) ? route('categories.update',$category->id) : route('categories.store') }}" method="POST">
    @csrf
    @method('PUT')
        <div class="form-group">
            <label for="name">Name</label>
            <input type="text" id="name" class="form-control" name="name" value="{{ isset($category) ? $category->name : '' }}">
        </div>

   <div class="form-group">
      <button class="btn btn-success">
        {{ isset($category) ? 'Update category' : 'Add category' }}
      </button>
   </div>
</form>

I'm using Route::resource('categories','CategoriesController');

+--------+-----------+----------------------------+--------------------+------------------------------------------------------------------------+--------------+
| Domain | Method    | URI                        | Name               | Action                                                                 | Middleware   |
+--------+-----------+----------------------------+--------------------+------------------------------------------------------------------------+--------------+
|        | POST      | categories                 | categories.store   | App\Http\Controllers\CategoriesController@store                        | web          |
|        | GET|HEAD  | categories                 | categories.index   | App\Http\Controllers\CategoriesController@index                        | web          |
|        | GET|HEAD  | categories/create          | categories.create  | App\Http\Controllers\CategoriesController@create                       | web          |
|        | DELETE    | categories/{category}      | categories.destroy | App\Http\Controllers\CategoriesController@destroy                      | web          |
|        | PUT|PATCH | categories/{category}      | categories.update  | App\Http\Controllers\CategoriesController@update                       | web          |
|        | GET|HEAD  | categories/{category}      | categories.show    | App\Http\Controllers\CategoriesController@show                         | web          |
|        | GET|HEAD  | categories/{category}/edit | categories.edit    | App\Http\Controllers\CategoriesController@edit                         | web          |
+--------+-----------+----------------------------+--------------------+------------------------------------------------------------------------+--------------+

Answer 1

You need to condition the @method('PUT') as well like below:

<form action="{{ isset($category) ? route('categories.update',$category->id) : route('categories.store') }}" method="POST">
    @csrf
    @if(isset($category))
       @method('PUT')
    @endif
        <div class="form-group">
            <label for="name">Name</label>
            <input type="text" id="name" class="form-control" name="name" value="{{ isset($category) ? $category->name : '' }}">
        </div>

   <div class="form-group">
      <button class="btn btn-success">
        {{ isset($category) ? 'Update category' : 'Add category' }}
      </button>
   </div>
</form>