title: Laravel - Return All Posts Except some post with Condition
body: <p>i want to get posts but not that post with specific key value</p>
  <p>i use below code for get my posts</p>
  <pre><code>$col = Post::where('type', $type)-&gt;whereNotIn('restrict', ['res1'])-&gt;orderBy('id', 'desc')-&gt;paginate(24);
  </code></pre>
  <p>it's work but it also not return posts with <strong>null</strong> restrict value</p>
  <p>how i get posts <strong>Except</strong> some of theme with restrict key value == 'res1'  ?</p>