set CSS class depending on returned string with Ember

Question

Im still learning ember and i didn't got how i can apply certain CSS class depending on the returned string of a model on a certain controller.

The official documentation (http://emberjs.jsbin.com/yoqifiguva/1/edit?html,js,output) only covers when you have a boolean.

I didn't manage to apply this knowledge for my case. I have status string string like : "passed", "failed", "pendent" and "blocked", which i want to apply different css class for each status.

Any examples on how to achieve that?

Answer 1

You can use bind-attr, for example:

<ul>
{{#each item in model}}
  <li {{bind-attr class='item.status'}}>An item with status: `{{item.status}}`</li>
{{/each}}
</ul>

Which produces following HTML:

<ul>
  <li class="passed" data-bindattr-262="262">An item with status: `passed`</li>
  <li class="failed" data-bindattr-265="265">An item with status: `failed`</li>
</ul>

For collection:

[
  YourModel.create({ status: 'passed'}),
  YourModel.create({ status: 'failed'})
]

of objects declared like:

YourModel = Em.Object.extend({
  status: null
});

Demo.

You can also create Component which can be reused with many models. Component code:

App.StatusItemComponent = Em.Component.extend({
  classNameBindings: ['status'],

  status: function() {
    var modelStatus = this.get('model.status');
    if (modelStatus)
      return 'status-' + modelStatus;
  }.property('model.status')
});

Template code:

{{#each item in model}}
  {{#status-item model=item}}
    An item with status: {{item.status}}
  {{/status-item}}
{{/each}}

Demo.