# Partially loading data

**URL:** https://discuss.emberjs.com/t/partially-loading-data/4736
**Category:** Design
**Created:** [April 2, 2014, 10:02pm UTC](https://discuss.emberjs.com/t/partially-loading-data/4736 "2014-04-02T22:02:56Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![dave8401](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/dave8401/32/15653_2.png) [@dave8401](https://discuss.emberjs.com/u/dave8401)
#### Post date: [April 2, 2014, 10:02pm UTC](https://discuss.emberjs.com/t/partially-loading-data/4736/1 "2014-04-02T22:02:56Z")

</div>

Hi everyone,

I’ve put together a [small gallery app](http://david-steinberger.at/mobile) based on ember and ember-model. Basically it retrieves album information (can also be nested) and displays the entities (photos or albums) in a simple grid. It’s working fine, but has 1 major problem right now: **the loading of the full model takes too long!**

**Current design and issues:**

The router waits until the model is completely loaded. The model is always a parent (album) and an unlimited number of children (other album- or photo-entities). The metadata can be fetched fast, but a photo can be public or non-public. In the latter case the image has to be retrieved via a separate request (base64 encoded) which can take some time.

Status quo: In the adapter’s `find()` method all entities are fetched, and for each non-public image the base64 encoded data is fetched (all promise based).

```
G3.Album.adapter = Ember.RESTAdapter.create({
  find: function(record, id) {
    var record;

    // loading album data recursively, then loading all image data

    return new Ember.RSVP.all(promises).then(function(){
      return record;
  }
});

```

**From a design perspective, how could I achieve the following best:**

1. Have the router transition to my route when all metadata is loaded, but the image data is still being fetched (partially loaded)?
2. Display a placeholder image while the image data is being fetched and then replace it with the loaded image?

Thanks, David