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RB.ReviewDialogCommentHook() is used to add additional fields or information to the comments shown in the review dialog. The hook is instantiated with a viewType option that expects a custom Backbone.js view class, which is your custom view for modifying the comment dialog.

The view should inherit from Backbone.View (or a subclass of this), and its model will be set to the same comment model (RB.DiffComment() or FileAttachmentComment()) used by the comment. The view’s element will be appended to the list of fields for the comment.

The view should not modify other fields for the comment.


var MyReviewDialogCommentHookView = Backbone.View.extend({
    events: {
        'change input': '_onInputChanged'

    render: function() {
        this.extraData = this.model.get('extraData')['my-extension-id'];
        this.$input = $('<input type="text"/>')

        return this;

    _onInputChanged: function() {
        this.extraData.myValue = this.$input.val();

MyProject.Extension = RB.Extension.extend({
    initialize: function() {

        new RB.ReviewDialogCommentHook({
            extension: this,
            viewType: MyReviewDialogCommentHookView