ng-repeat unknown number of nested elements

Question

I'm wondering if there is a simple solution to this type of problem.

I have an object comment, which can in turn contain comments, and those comments can also contain comments ...and this can go on for a unknown number of cycles.

Here is an example of the data structure:

var comment = {
   text : "",
   comments: [
      { text: "", comments : []},
      { text: "", comments: [
         { text: "", comments : []},
         { text: "", comments : []}
         { text: "", comments : []}
      ]}
   ]
}

Lets say for 2 levels of comments I would write:

<div ng-repeat="comment in comments">
   {{comment.text}}
   <div ng-repeat="comment in comments">
      {{comment.text}}
   </div>
</div>

How would I implent my divs for "n" level of nested comments ?

Answer 1

The easiest way is to create a generic partial so you can recursively call and render it using ng-include.

<div ng-include="'partialComment.html'" ng-model="comments"></div>

Here is the partial:

<ul>
    <li ng-repeat="c in comments">
      {{c.text}}
      <div ng-switch on="c.comments.length > 0">
        <div ng-switch-when="true">
          <div ng-init="comments = c.comments;" ng-include="'partialComment.html'"></div>  
        </div>
      </div>
    </li>
</ul>

The data model should be a list var comments = [{ ... }].

I created a demo for you and hope it helps.

Demo

Answer 2

You need a recursive directive. Something like this, or probably better this.