title: how to define column type in golang type struct as longtext?
body: <p>I have this peace of code:</p>
  
  <pre><code>type Post struct {
      Id      int64 `db:"post_id"`
      Created int64
      Title   string `form:"Title"`
      Body    string `form:"Body" binding:"required"`
  
  }
  </code></pre>
  
  <p>but that gets me only 255 varchar for Body.
  How can i set that to be longtext?</p>
  
  <p>This is from example app for martini framework.</p>