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523 Named Routes
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Let s put the named routes created in Section 522 to work in our layout This will entail filling in the second arguments of the link_to functions with the proper named routes For example, we ll convert
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<%= link_to "About", '#' %>
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<%= link_to "About", about_path %>
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and so on
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5: Filling in the Layout
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We ll start in the header partial, _headerhtmlerb (Listing 521), which has links to the Home and Help pages While we re at it, we ll follow a common web convention and link the logo image to the Home page as well
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Listing 521 Header partial with links
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app/views/layouts/_headerhtmlerb
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<header> <% logo = image_tag("logopng", :alt => "Sample App", :class => "round") %> <%= link_to logo, root_path %> <nav class="round"> <ul> <li><%= link_to "Home", root_path %></li> <li><%= link_to "Help", help_path %></li> <li><%= link_to "Sign in", '#' %></li> </ul> </nav> </header>
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We won t have a named route for the Sign in link until 9, so we ve left it as # for now Note that this code defines the local variable logo for the logo image tag, and then links to it in the next line:
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<% logo = image_tag("logopng", :alt => "Sample App", :class => "round") %> <%= link_to logo, root_path %>
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This is a little cleaner than stuffing it all into one line It s especially important to notice that the ERb for the variable assignment doesn t have an equals sign; it s just <% %>, because we don t want that line inserted into the template (Using a local variable in this manner is only one way to do it An even cleaner way might be to define a logo helper; see Section 55) The other place with links is the footer partial, _footerhtmlerb, which has links for the About and Contact pages (Listing 522)
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Listing 522 Footer partial with links
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app/views/layouts/_footerhtmlerb
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<footer> <nav class="round"> <ul> <li><%= link_to "About", about_path %></li>
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Layout Links
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<li><%= link_to "Contact", contact_path %></li> <li><a href="http://newsrailstutorialorg/">News</a></li> <li><a href="http://wwwrailstutorialorg/">Rails Tutorial</a></li> </ul> </nav> </footer>
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With that, our layout has links to all the static pages created in 3, so that, for example, /about goes to the About page (Figure 59) By the way, it s worth noting that, although we haven t actually tested for the presence of the links on the layout, our tests will fail if the routes aren t defined You can check this by commenting out the routes in Listing 518 and running your test suite For a testing method that actually makes sure the links go to the right places, see Section 55
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The About page at /about
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5: Filling in the Layout
53 User Signup: A First Step
As a capstone to our work on the layout and routing, in this section we ll make a route for the signup page, which will mean creating a second controller along the way This is a first important step toward allowing users to register for our site; we ll take the next step, modeling users, in 6, and we ll finish the job in 8
531 Users Controller
It s been a while since we created our first controller, the Pages controller, way back in Section 312 It s time to create a second one, the Users controller As before, we ll use generate to make the simplest controller that meets our present needs, namely, one with a stub signup page for new users Following the conventional REST architecture favored by Rails, we ll call the action for new users new and pass it as an argument to generate controller to create it automatically (Listing 523)
Listing 523 Generating a Users controller (with a new action)
$ rails generate controller Users new create app/controllers/users_controllerrb route get "users/new" invoke erb create app/views/users create app/views/users/newhtmlerb invoke rspec create spec/controllers/users_controller_specrb create spec/views/users create spec/views/users/newhtmlerb_specrb invoke helper create app/helpers/users_helperrb invoke rspec create spec/helpers/users_helper_specrb
As with the Pages controller, this generates view and helper specs that we won t need, so remove them: