title: Laravel language on Auth validation error
body: <p>I would like to use the laravel default functionality to show the error, but in another language.
  <strong>I don't need a "nice name", but a translation for the **:attribute</strong> value in lang files.
  Right now if I just use: </p>
  
  <pre><code>&lt;input type="text" placeholder="{{ trans('generic.phone') }}" name="phone" value="{{ old('phone') }}"&gt;
  @if ($errors-&gt;has('phone'))
  &lt;span class="help-block"&gt;
      &lt;strong&gt;{{ $errors-&gt;first('phone') }}&lt;/strong&gt;
  &lt;/span&gt;
  @endif
  </code></pre>
  
  <p>it works perfectly, because the <strong>:attribute</strong> takes the field <strong>phone</strong>, and in the validation language I have:</p>
  
  <pre><code>'required' =&gt; 'The :attribute field is required.',
  </code></pre>
  
  <p>But how to manage <strong>phone</strong> field with a language file?</p>
  
  <p><strong>Do I must have to write a custom error for each field?</strong> Please tell me I don't.</p>
  
  <blockquote>
    <p>The following function is just a <strong>wrong example</strong> to let you understand what
    I'm trying to do</p>
  </blockquote>
  
  <pre><code>@if ($errors-&gt;has('phone'))
      &lt;strong&gt;{{ $errors-&gt;first(trans('generic.phone')) }}&lt;/strong&gt;
  @endif
  </code></pre>