Laravel custom messages for array validation

Question

I am having a form and I have an array of input fields for video urls, now when I validate form if I have multiple invalid fields with video urls, I get the same message for each of the invalid field, since I made my own custom messages. I don't want for each input field the same error message and I don't want the default Laravel error messages for arrays where the name of the field is shown with the error message, instead of that, I would like to have error messages with the value, in this case url written from the user. How to do that?

This is my request file with messages and rules:

public function messages(){

    $messages = [
      'title.required' => 'Du må ha tittel.',
      'type.required' => 'Du må velge artikkeltype.',
      'category.required' => 'Du må velge kategori.',
      'summary.required' => 'Du må ha inngress.',
      'text.required' => 'Du må ha artikkeltekst.',
      'active_url' => 'Du må ha gyldig url.',
    ];
  }

  public function rules(){

    $rules = [
      'external_media.*' => 'active_url',
      'title' => 'required',
      'type' => 'required',
      'category' => 'required',
      'summary' => 'required',
      'text' => 'required',
      //'image' => 'required|image|max:20000',
    ];

    return $rules;

  }

Updated code to make the question clearer

When I have my request file like this:

public function messages(){

    $messages = [
      'title.required'    => 'Du må ha tittel.',
      'type.required'    => 'Du må velge artikkeltype.',
      'category.required'    => 'Du må velge kategori.',
      'summary.required'    => 'Du må ha inngress.',
      'text.required'    => 'Du må ha artikkeltekst.',
      'external_media.active_url' => 'Du må ha gyldig url.',
   ];

   return $messages;
  }

  public function rules(){

    $rules = [
      'external_media.*' => 'active_url',
      'title' => 'required',
      'type' => 'required',
      'category' => 'required',
      'summary' => 'required',
      'text' => 'required',
      //'image' => 'required|image|max:20000',
    ];

    return $rules;

  }

I get the output:

The external_media.0 is not a valid URL.
The external_media.1 is not a valid URL.
The external_media.2 is not a valid URL.

Instead of that kind of output I would like to take the value for each of those inputs and have something like:

The htt:/asdfas.com  is not a valid URL.

Answer 1

public function messages() {

    $messages = [
        'title.required'    => 'Du må ha tittel.',
        'type.required'     => 'Du må velge artikkeltype.',
        'category.required' => 'Du må velge kategori.',
        'summary.required'  => 'Du må ha inngress.',
        'text.required'     => 'Du må ha artikkeltekst.',

    ];

    foreach ($this->get('external_media') as $key => $val) {
        $messages["external_media.$key.active_url"] = "$val is not a valid active url";
    }

    return $messages;

}