       <div class="meta">
         <ItemView full item={this.props.model} />
         <div class="Controls">
-          <Control onClick={this.onAddComment} icon="reply" />
+          {this.getUser() && <Control onClick={this.onAddComment} icon="reply" />}
           <Control href={this.url()} icon="link" />
         </div>
       </div>

     </div>`

CommentView = React.createClass
  mixins: [HasComments, HasScreen]

  propTypes:
    model: React.PropTypes.instanceOf(Item).isRequired

     </div>`

ItemScreen = React.createClass
  mixins: [UserAware, HasScreen, HasComments, DOMEvents, FocusController]
  propTypes:
    model: React.PropTypes.instanceOf(Item).isRequired
  focusItems: '.ItemView'

  renderAddCommentButton: ->
    if not this.state?.commentEditorShown and this.getUser()
      `<div class="Controls">
        <Control onClick={this.onAddComment} icon="comment" label="Discuss" />
       </div>`
