12.0: Add Star Option

Add isStarred Property to Database

Let's add an option to star a note. This is an example of how to make changes after you've completed the first version of something. It's a good idea to branch off and do this on a separate branch.

First, we need to update our database to have a property of wether or not a note is starred.

1. Go to ElevenNote.Data -> Note.cs

2. Add the following property between the Content and CreatedUtc properties

        [DefaultValue(false)]
        public bool IsStarred { get; set; }

3. CTRL . to bring in the using statement

4. In order for the database to be updated with this new column, we need to:

   RUN MIGRATIONS

Update the NoteListItem Model

We'll want a clickable star on the page that shows all of our notes. The model for that view is NoteListItem

1. Go to ElevenNote.Models -> NoteListItem.cs and add the IsStarred property between the Title and CreatedUtc

        [UIHint("Starred")]
        public bool IsStarred { get; set; }

2. The UIHint will link up to a view we make later

Update NoteService.cs

We'll need the service to know about the star as well???

1. Add the IsStarred option in IEnumerable<NoteListItem>.

        new NoteListItem
    {
        NoteId = e.NoteId,
        Title = e.Title,
        IsStarred = e.IsStarred,
        CreatedUtc = e.CreatedUtc
    }

Add Star to Index View

We need to add a column and column name for the isStarred property in our table that displays the list of notes.

1. Open ElevenNote.Web -> Views -> Note -> Index.cshtml

2. Add the DisplayNameFor for IsStarred

        <th>
            @Html.DisplayNameFor(model => model.Title)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.IsStarred)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.CreatedUtc)
        </th>
        <th></th>
    </tr>

3. Add the DisplayFor for IsStarred

        <td>
            @Html.DisplayFor(modelItem => item.Title)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.IsStarred, new { Id = item.NoteId })
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.CreatedUtc)
        </td>
        <td>
            @Html.ActionLink("Edit", "Edit", new { id = item.NoteId }) |
            @Html.ActionLink("Details", "Details", new { id = item.NoteId }) |
            @Html.ActionLink("Delete", "Delete", new { id = item.NoteId })
        </td>
    </tr>

4. Now, we need some JavaScript to make the star functionality work

5. Add this code to the very end of Index.cshtml, after </table>:

    @section scripts {
    <script language="javascript" type="text/javascript">
        $(document).ready(function () {
            $("i[data-toggle='star']")
                .css({ "cursor": "pointer" })
                .click(function (e) {
                    var target = $(e.target);
                    var noteId = target.attr("data-id");
                    var starSet = target.hasClass("glyphicon-star");
   
                    $.ajax({
                        method: starSet ? "DELETE" : "PUT",
                        url: "/api/note/" + noteId + "/star",
                        data: null
                    })
                    .done(function (r) {
                        target.removeClass();
                        target.addClass("glyphicon " + (starSet ? "glyphicon-star-empty" : "glyphicon-star"));
                    })
                    .fail(function (r) {
                        alert("Failed to change star status");
                    });
                });
        });
    </script>
   }

Add the Starred Display Template

Similar to the DateTime display changes we made, we'll make a view specifically for the star. Notice that the name of this view, Starred, is the same as the UIHint from the NoteListItem model.

1. Right click on the ElevenNote.Web -> Views -> Shared -> Display Templates folder and select Add -> View

2. Name it Starred and fill it out like this:

   
3. Add this code:

    @model bool
   
    <span>
        <i class="glyphicon @(Model ? "glyphicon-star" : "glyphicon-star-empty")"
           data-toggle="star"
           data-id="@ViewBag.Id"></i>
    </span>

4. 

Next, we'll do more setup to get the star function working.