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Diffstat (limited to 'guides/source/layouts_and_rendering.md')
| -rw-r--r-- | guides/source/layouts_and_rendering.md | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/guides/source/layouts_and_rendering.md b/guides/source/layouts_and_rendering.md index 76b325d0bf..15345c94b7 100644 --- a/guides/source/layouts_and_rendering.md +++ b/guides/source/layouts_and_rendering.md @@ -71,23 +71,25 @@ If we want to display the properties of all the books in our view, we can do so <h1>Listing Books</h1> <table> - <tr> - <th>Title</th> - <th>Summary</th> - <th></th> - <th></th> - <th></th> - </tr> - -<% @books.each do |book| %> - <tr> - <td><%= book.title %></td> - <td><%= book.content %></td> - <td><%= link_to "Show", book %></td> - <td><%= link_to "Edit", edit_book_path(book) %></td> - <td><%= link_to "Remove", book, method: :delete, data: { confirm: "Are you sure?" } %></td> - </tr> -<% end %> + <thead> + <tr> + <th>Title</th> + <th>Content</th> + <th colspan="3"></th> + </tr> + </thead> + + <tbody> + <% @books.each do |book| %> + <tr> + <td><%= book.title %></td> + <td><%= book.content %></td> + <td><%= link_to "Show", book %></td> + <td><%= link_to "Edit", edit_book_path(book) %></td> + <td><%= link_to "Destroy", book, method: :delete, data: { confirm: "Are you sure?" } %></td> + </tr> + <% end %> + </tbody> </table> <br> @@ -95,7 +97,7 @@ If we want to display the properties of all the books in our view, we can do so <%= link_to "New book", new_book_path %> ``` -NOTE: The actual rendering is done by subclasses of `ActionView::TemplateHandlers`. This guide does not dig into that process, but it's important to know that the file extension on your view controls the choice of template handler. Beginning with Rails 2, the standard extensions are `.erb` for ERB (HTML with embedded Ruby), and `.builder` for Builder (XML generator). +NOTE: The actual rendering is done by nested classes of the module [`ActionView::Template::Handlers`](http://api.rubyonrails.org/classes/ActionView/Template/Handlers.html). This guide does not dig into that process, but it's important to know that the file extension on your view controls the choice of template handler. ### Using `render` @@ -230,14 +232,14 @@ You can send an HTML string back to the browser by using the `:html` option to `render`: ```ruby -render html: "<strong>Not Found</strong>".html_safe +render html: helpers.tag.strong('Not Found') ``` TIP: This is useful when you're rendering a small snippet of HTML code. However, you might want to consider moving it to a template file if the markup is complex. -NOTE: When using `html:` option, HTML entities will be escaped if the string is not marked as HTML safe by using `html_safe` method. +NOTE: When using `html:` option, HTML entities will be escaped if the string is not composed with `html_safe`-aware APIs. #### Rendering JSON @@ -283,7 +285,7 @@ the response. Using `:plain` or `:html` might be more appropriate most of the time. NOTE: Unless overridden, your response returned from this render option will be -`text/html`, as that is the default content type of Action Dispatch response. +`text/plain`, as that is the default content type of Action Dispatch response. #### Options for `render` @@ -1264,7 +1266,7 @@ You can also pass in arbitrary local variables to any partial you are rendering In this case, the partial will have access to a local variable `title` with the value "Products Page". -TIP: Rails also makes a counter variable available within a partial called by the collection, named after the member of the collection followed by `_counter`. For example, if you're rendering `@products`, within the partial you can refer to `product_counter` to tell you how many times the partial has been rendered. This does not work in conjunction with the `as: :value` option. +TIP: Rails also makes a counter variable available within a partial called by the collection, named after the title of the partial followed by `_counter`. For example, when rendering a collection `@products` the partial `_product.html.erb` can access the variable `product_counter` which indexes the number of times it has been rendered within the enclosing view. You can also specify a second partial to be rendered between instances of the main partial by using the `:spacer_template` option: |