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“Load more” content from the server and add it to the page

Asked By: Anonymous

I’ve waded through a lot of pages/questions regarding pagination/infinite scrolling/load more content.

Either the content is pre-loaded completely in the store or the examples requesting new data simply don’t work.

I’ve got a blog displaying 5 posts then a ‘load more’ button.
Upon hitting this button I’d like to request 5 more posts from the server and add them live to the page.'post', {limit: 5, offset: 5, sort:'createdAt desc'});

Please can you provide a working example or instructions to make it work?

EDIT: the following seems to be a good option but I don’t know how to make it work

Make the model a standard array and use the route hooks and “load more” actions to fill it with records from ED query results

EDIT2 this is how I set the model for the route:

import Ember from 'ember';

export default Ember.Route.extend({
   model: function() {
      return'post', { isPublished: true,
                                       limit: 5,
                                       sort:'createdAt desc'});


Answered By: Anonymous

I’ve created a simple app for you on GitHub:

Just fetch it, install dependencies and you’re ready to go:

$ git clone
$ cd ember-loadMore-example
$ npm install
$ bower install # possibly you don't have to do that
$ npm start

and go to http://localhost:4200 where you have a link to #/post route.

I’ve presented how you can do loadMore button but I set up the offset variable as well, so you can easily transform this code to the pagination.

So, in my routes/post.js file I’ve got two query params defined (though in this example I’m actually using only limit):

export default Ember.Route.extend({
  queryParams: {
    limit: {
      refreshModel: true
    offset: {
      refreshModel: true

  model: function(params) {
    return'post', {
      limit: params.limit,
      offset: params.offset

That sets up both of the query params. refreshModel: true causes fetching new data from server (model hook is called) whenever a query param is changed.

To have it working, you have to also define your query params in the controller (controllers/post.js):

export default Ember.Controller.extend({
  queryParams: ['limit', 'offset'],
  limit: 20,
  offset: 0,

  pageSize: 20,

  actions: {
    loadMore: function() {
      this.set('limit', this.get('limit') + this.get('pageSize'));

And the loadMore action is just adding the pageSize to existing limit.

The template (templates/post.hbs) look like that:


  {{#each post in model}}
    <li>{{}}. {{}}</li>

<button {{action 'loadMore'}}>Load more</button>

To have the fully working example, I’ve created a simple server side that can understand limit and offset:

app.get('/api/posts', function(req, res) {
  var limit = parseInt(req.query.limit);
  var offset = parseInt(req.query.offset) || 0;

  var filteredItems = items;
  if (limit) {
    filteredItems = items.slice(offset, (offset+limit));
  } else {
    filteredItems = items.slice(offset);
    post: filteredItems

where items is an 100-elements array of [{id: 0, name: 'post0'},{id: 1, name: 'post1'},....

Hence the model structure (models/post.js):

export default DS.Model.extend({
  name: DS.attr('string')

I hope that it will help you to understand how to implement the solution in your project.


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