Rails%203%20In%20Action

110 CHAPTER 5 Nested resources
see that it can’t find the text for the first ticket because you’re not displaying any tickets
on the show template yet:
expected there to be content "Make it shiny!" in "[text]"
5.2.1 Listing tickets
To display a ticket on the show template, you can iterate through the project’s tickets
by using the tickets method, made available by the has_many :tickets call in your
model. Put this code at the bottom of app/views/projects/show.html.erb, as shown in
the next listing.
Listing 5.10 app/views/projects/show.html.erb
# -
TIP If you use a @ticket variable in place of the ticket variable in the
link_to’s second argument, it will be nil. You haven’t initialized the
@ticket variable at this point, and uninitialized instance variables are nil
by default. If @ticket rather than the correct ticket is passed in here, the
URL generated will be a projects URL, such as /projects/1, rather than the
correct /projects/1/tickets/2.
Here you iterate over the items in @project.tickets using the each method, which
does the iterating for you, assigning each item to a ticket variable inside the block.
The code inside this block runs for every single ticket. When you run bin/cucumber
features/viewing_tickets.feature, you get this error:
When I follow "Ticketee"
no link with title, id or text 'Ticketee' found
The reasoning behind wanting this not-yet-existing link is that when users click it, it
takes them back to the homepage, which is where you want to go in your feature to get
back to the projects listing. To add this link, put it into app/views/layouts/application
.html.erb (as shown in the following listing) so that it’s available on every page, just
above the .
Listing 5.11 app/views/layouts/application.html.erb
The call to yield should be used only once. If you put then the content
of the page would be rendered twice.