Ember 1.7 comment pagination example extracted from a working app

controllers-post.js

import Ember from 'ember';

export default Ember.ObjectController.extend({
  queryParams: ['page'],
  page: 1,
  comments: Ember.K(),

  paginationObserver: function() {
    var id = this.get('id'),
        page = this.get('page'),
        comments = this.store.find('comment', {post: id, page: page});
    this.set('comments', comments);
  }.observes('page', 'model') // fetch comments when the page changes and get the first page when `model` is set
});

// post.hbs
{{postTitle}}
{{postBody}}

{{#each comment in comments}}
  {{comment.author}}
  {{comment.body}}
{{else}}
  There are no comments.
{{/each}}

{{#if comments.content.meta}}
  {{#if comments.content.meta.previous}}
    // this could also be an action that just changed the value of `page`
    {{link-to 'Previous' 'post' (query-params page=comments.content.meta.previous) }}
  {{/if}}

  {{#if comments.content.meta.next}}
    {{link-to 'Next' 'post' (query-params page=comments.content.meta.next) }}
  {{/if}}
{{/if}}