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While we can view the detail for a comic book, we don’t have a way to view the list of available comic books. Let’s resolve both this issue by adding a Comic Books List page to our website.
Follow Along
To follow along commiting your changes to this course, you'll need to fork the aspnet-comic-book-gallery repo. Then you can clone, commit, and push your changes to your fork like this:
git clone <your-fork>
cd aspnet-comic-book-gallery
git checkout tags/v5.1 -b adding-a-list-controller-and-view
Keyboard Shortcuts
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CTRL+COMMA- Navigate To -
CTRL+SHIFT+B- Build solution
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[MUSIC]
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The time has arrived to fix our home page 404 error, that is.
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Currently where we browse to the root of our website, our default or
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home page produces a 404 error.
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That's because MVC is looking for a controller named home.
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And an action method on that controller named index and
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our project doesn't contain either of those.
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Our website is also lacking a key feature.
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While we can view the detail for
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a comic book, we don't have a way to view the list of available comic books.
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In this section, we'll resolve both of these issues by
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adding a comic books list page to our website.
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Let's get started.
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Before we work on our controller or view we need to set up the data source for
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our list page.
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To do this we can add another method to our existing comic book repository class.
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I'll open the navigate to dialogue by pressing control comma and
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type the search criteria, comic.
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Then I'll use the down arrow key to select the third item in the list,
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the comic book repository class, and press Enter to open the file.
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Let's scroll down past our comic book data and add our new, get comic books method.
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It'll be public and return an array of comic book objects.
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The implementation is simple.
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Just return_comicBooks private field.
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Now we can turn our attention to the controller.
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I'll use the Navigate to dialogue again to open the ComicBooksController class.
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In between our constructor and the detail method.
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Let's add an index action method.
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Remember our action method needs to be public and return an ActionResult object.
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For its implementation let's create a comic books variable and
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assign to it the result of the repositories get comic books method.
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Then return a call to the base controller's view method
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passing in the comic books variable.
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Remember, passing a comicBooks array into the View method
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will make our array available via the view's model property.
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Before we go any further, let's build our project.
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Press Ctrl+Shift+B to build the solution.
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Visual Studio opens the output window so
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that we can monitor the progress of the build.
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One project succeeded and zero failed, so far, so good.
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Now that we verified that our project is successfully building, let's add our view.
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We're going to use a different process from what we used to add
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our comic book detail view.
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From within our new index action method, right-click on the View method call and
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select the Add view menu item.
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This opens up the Add View dialog.
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Visual Studio will default the name of the view to the action method name,
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which in our case is index.
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If we open the template list,
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we can see that there are a variety of templates that we can choose from.
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For now, we're going to keep things simple and select the Empty without model option.
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In future courses, we'll take a look at how you can use the other templates
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to quickly scaffold a functional website.
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We'll keep the use a layout page checkbox checked.
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Click the add button to finish adding the view.
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Visual Studio will add an index.cshtml file inside of the views.
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Comic books folder.
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Here's our view.
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Not much to look at right now, but that will change shortly.
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If you're using github, let's commit our changes.
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Enter a commit message of added comic books,
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list view and click the commit all button.
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In the next video we'll work on finishing our view.
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See you then.
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