title: How to avoid updating slug while editing category in symfony2 sonata admin bundle and what is the best practice?
body: <p>Here I want to know about the best practice first.</p>
  
  <p>Assume we create a category using symfony2 sonata admin bundle then it creates  the slug as well</p>
  
  <p>e.g. Name: "My Category"
       Slug: "my-category"</p>
  
  <p>Now when I edit Category name to "My Category Edited" the slug becomes "my-category-edited".</p>
  
  <p>So first question </p>
  
  <p>Is it good to change slug every time we edit something?
  As that slug can be used to put a check say in some if() condition so changing the slug may break things.</p>
  
  <p>My Second Question</p>
  
  <p>How to avoid changing the slug on every edit? I am using Gedmo (http://gediminasm.org/article/sluggable-behavior-extension-for-doctrine-2)</p>