Node.js, MongoDB, and AngularJS Web Development

Creating a Comment Service

Because you know you will need a comment service to handle getting and adding comments, you need to add that first. Listing 27.15 implements a comment service that uses the service method. You need to create a function definition called CommentObj. The constructor function accepts the $http service as the only parameter.

You define a getComment() function that accepts commentId and then does a GET request to the /comment/get route to get the full comment data. Notice that this function also accepts a callback function. The callback function returns an error if $http reports one or the comment data from the server.

The addComment() function accepts rootCommentId for the comment thread, parentId for the parent comment, ...