diff options
Diffstat (limited to 'railties/guides/source/layouts_and_rendering.textile')
| -rw-r--r-- | railties/guides/source/layouts_and_rendering.textile | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/railties/guides/source/layouts_and_rendering.textile b/railties/guides/source/layouts_and_rendering.textile index 809d2b2172..0cee413ac3 100644 --- a/railties/guides/source/layouts_and_rendering.textile +++ b/railties/guides/source/layouts_and_rendering.textile @@ -204,7 +204,7 @@ TIP: You don't need to call +to_xml+ on the object that you want to render. If y h5. Rendering Vanilla JavaScript -Rails can render vanilla JavaScript (as an alternative to using +update+ with n +.rjs+ file): +Rails can render vanilla JavaScript (as an alternative to using +update+ with an +.rjs+ file): <ruby> render :js => "alert('Hello Rails');" @@ -266,7 +266,7 @@ render :xml => photo, :location => photo_url(photo) h5. Finding Layouts -To find the current layout, Rails first looks for a file in +app/views/layouts+ with the same base name as the controller. For example, rendering actions from the +PhotosController+ class will use +/app/views/layouts/photos.html.erb+ (or +app/views/layouts/photos.builder+). If there is no such controller-specific layout, Rails will use +/app/views/layouts/application.html.erb+ ot +/app/views/layouts/application.builder+. If there is no +.erb+ layout, Rails will use a +.builder+ layout if one exists. Rails also provides several ways to more precisely assign specific layouts to individual controllers and actions. +To find the current layout, Rails first looks for a file in +app/views/layouts+ with the same base name as the controller. For example, rendering actions from the +PhotosController+ class will use +app/views/layouts/photos.html.erb+ (or +app/views/layouts/photos.builder+). If there is no such controller-specific layout, Rails will use +app/views/layouts/application.html.erb+ or +app/views/layouts/application.builder+. If there is no +.erb+ layout, Rails will use a +.builder+ layout if one exists. Rails also provides several ways to more precisely assign specific layouts to individual controllers and actions. h6. Specifying Layouts on a per-Controller Basis @@ -418,15 +418,15 @@ def show end </ruby> -Note that the implicit render done by ActionController detects if +render+ has been called, and thus avoids this error. So this code will work with problems: +Note that the implicit render done by ActionController detects if +render+ has been called, and thus avoids this error. Therefore, the following will work without errors: <ruby> - def show - @book = Book.find(params[:id]) - if @book.special? - render :action => "special_show" - end +def show + @book = Book.find(params[:id]) + if @book.special? + render :action => "special_show" end +end </ruby> This will render a book with +special?+ set with the +special_show+ template, while other books will render with the default +show+ template. @@ -447,7 +447,7 @@ redirect_to :back h5. Getting a Different Redirect Status Code -Rails uses HTTP status code 302 (permanent redirect) when you call +redirect_to+. If you'd like to use a different status code (perhaps 301, temporary redirect), you can do so by using the +:status+ option: +Rails uses HTTP status code 302 (temporary redirect) when you call +redirect_to+. If you'd like to use a different status code (perhaps 301, permanent redirect), you can do so by using the +:status+ option: <ruby> redirect_to photos_path, :status => 301 @@ -519,10 +519,10 @@ h4. Asset Tags Asset tags provide methods for generating HTML that links views to assets like images, javascript, stylesheets, and feeds. There are four types of include tag: -* auto_discovery_link_tag -* javascript_include_tag -* stylesheet_link_tag -* image_tag +* +auto_discovery_link_tag+ +* +javascript_include_tag+ +* +stylesheet_link_tag+ +* +image_tag+ You can use these tags in layouts or other views, although the tags other than +image_tag+ are most commonly used in the +<head>+ section of a layout. @@ -622,16 +622,16 @@ To include +public/stylesheets/main.css+ and +public/photos/columns.css+: <%= stylesheet_link_tag "main", "/photos/columns" %> </erb> -To include +http://example.com/main.cs+: +To include +http://example.com/main.css+: <erb> -<%= stylesheet_link_tag "http://example.com/main.cs" %> +<%= stylesheet_link_tag "http://example.com/main.css" %> </erb> -By default, +stylesheet_link_tag+ creates links with +media="screen" rel="stylesheet" type="text/css"+. You can override any of these defaults by specifying an appropriate option (:media, :rel, or :type): +By default, +stylesheet_link_tag+ creates links with +media="screen" rel="stylesheet" type="text/css"+. You can override any of these defaults by specifying an appropriate option (+:media+, +:rel+, or +:type+): <erb> -<%= stylesheet_link_tag "main_print", media => "print" %> +<%= stylesheet_link_tag "main_print", :media => "print" %> </erb> The +all+ option links every CSS file in +public/stylesheets+: @@ -958,13 +958,13 @@ On pages generated by +NewsController+, you want to hide the top menu and add a <% content_for :content do %> <div id="right_menu">Right menu items here</div> <%= yield(:news_content) or yield %> - <% end -%> +<% end -%> <%= render :file => 'layouts/application' %> </erb> That's it. The News views will use the new layout, hiding the top menu and adding a new right menu inside the "content" div. -There are several ways of getting similar results with different sub-templating schemes using this technique. Note that there is no limit in nesting levels. One can use the +ActionView::render+ method via +render :file => 'layouts/news'+ to base a new layout on the News layout. If one is sure she will not subtemplate the +News+ layout, she can ommit the +yield(:news_content) or + part. +There are several ways of getting similar results with different sub-templating schemes using this technique. Note that there is no limit in nesting levels. One can use the +ActionView::render+ method via +render :file => 'layouts/news'+ to base a new layout on the News layout. If one is sure she will not subtemplate the +News+ layout, she can omit the +yield(:news_content) or + part. h3. Changelog |