title: Nunjucks nested variables
body: <p>Are nested variables possible in Nunjucks? I need to be able to store a string in my database containing Nunjucks variable but it does not seem to work. Here's an example of what I need to be able to do:</p>
  
  <pre><code>dict = {
  name: 'John',
  lastname: 'Smith',
  greeting: 'Hello, my name is {{ name }} {{ lastname }}'
  }
  </code></pre>
  
  <p>And then be able to do</p>
  
  <pre><code>&lt;span&gt;{{greeting}}&lt;/span&gt;
  </code></pre>
  
  <p>but it outputs this:</p>
  
  <pre><code>'Hello, my name is {{ name }} {{ lastname }}'
  </code></pre>
  
  <p>The reason i need it this way it because I have a database with some description templates with holes and i have a database with values and I need to be able to combine them. But it is not always the same values so I cant hard-code them.</p>