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Diffstat (limited to 'guides/source/layouts_and_rendering.textile')
| -rw-r--r-- | guides/source/layouts_and_rendering.textile | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/guides/source/layouts_and_rendering.textile b/guides/source/layouts_and_rendering.textile index 4b4f9f3745..f69afaa281 100644 --- a/guides/source/layouts_and_rendering.textile +++ b/guides/source/layouts_and_rendering.textile @@ -686,7 +686,7 @@ You can specify a full path relative to the document root, or a URL, if you pref Rails will then output a +script+ tag such as this: <html> -<script src='/assets/main.js' type="text/javascript"></script> +<script src='/assets/main.js'></script> </html> The request to this asset is then served by the Sprockets gem. @@ -718,8 +718,8 @@ If the application does not use the asset pipeline, the +:defaults+ option loads Outputting +script+ tags such as this: <html> -<script src="/javascripts/jquery.js" type="text/javascript"></script> -<script src="/javascripts/jquery_ujs.js" type="text/javascript"></script> +<script src="/javascripts/jquery.js"></script> +<script src="/javascripts/jquery_ujs.js"></script> </html> These two files for jQuery, +jquery.js+ and +jquery_ujs.js+ must be placed inside +public/javascripts+ if the application doesn't use the asset pipeline. These files can be downloaded from the "jquery-rails repository on GitHub":https://github.com/indirect/jquery-rails/tree/master/vendor/assets/javascripts @@ -805,7 +805,7 @@ To include +http://example.com/main.css+: <%= stylesheet_link_tag "http://example.com/main.css" %> </erb> -By default, the +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, the +stylesheet_link_tag+ creates links with +media="screen" rel="stylesheet"+. You can override any of these defaults by specifying an appropriate option (+:media+, +:rel+): <erb> <%= stylesheet_link_tag "main_print", :media => "print" %> @@ -1134,13 +1134,6 @@ In Rails 3.0, there is also a shorthand for this. Assuming +@products+ is a coll Rails determines the name of the partial to use by looking at the model name in the collection. In fact, you can even create a heterogeneous collection and render it this way, and Rails will choose the proper partial for each member of the collection: -In the event that the collection is empty, +render+ will return nil, so it should be fairly simple to provide alternative content. - -<erb> -<h1>Products</h1> -<%= render(@products) || 'There are no products available.' %> -</erb> - * +index.html.erb+ <erb> @@ -1162,6 +1155,13 @@ In the event that the collection is empty, +render+ will return nil, so it shoul In this case, Rails will use the customer or employee partials as appropriate for each member of the collection. +In the event that the collection is empty, +render+ will return nil, so it should be fairly simple to provide alternative content. + +<erb> +<h1>Products</h1> +<%= render(@products) || 'There are no products available.' %> +</erb> + h5. Local Variables To use a custom local variable name within the partial, specify the +:as+ option in the call to the partial: @@ -1193,6 +1193,16 @@ h5. Spacer Templates Rails will render the +_product_ruler+ partial (with no data passed in to it) between each pair of +_product+ partials. +h5. Partial Layouts + +When rendering collections it is also possible to use the +:layout+ option: + +<erb> +<%= render :partial => "product", :collection => @products, :layout => "special_layout" %> +</erb> + +The layout will be rendered together with the partial for each item in the collection. The current object and object_counter variables will be available in the layout as well, the same way they do within the partial. + h4. Using Nested Layouts You may find that your application requires a layout that differs slightly from your regular application layout to support one particular controller. Rather than repeating the main layout and editing it, you can accomplish this by using nested layouts (sometimes called sub-templates). Here's an example: @@ -1206,7 +1216,7 @@ Suppose you have the following +ApplicationController+ layout: <head> <title><%= @page_title or 'Page Title' %></title> <%= stylesheet_link_tag 'layout' %> - <style type="text/css"><%= yield :stylesheets %></style> + <style><%= yield :stylesheets %></style> </head> <body> <div id="top_menu">Top menu items here</div> |