title: How to find key of hash in jsonb in Rails?
body: <p><strong>Example</strong>
  Model Home, column: animals.
  Inside animals jsonb like this:</p>
  
  <pre><code>dogs: {
    dog1: { attributes...},
    dog2: { attributes...},
    ...
  }
  </code></pre>
  
  <p><strong>Question</strong><br>
  How can I find dog1 only by the key("dog1")</p>