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diff --git a/content/post/2008-9-27-highlight-link-based-on-current-page-in-rails.markdown b/content/post/2008-9-27-highlight-link-based-on-current-page-in-rails.markdown new file mode 100644 index 0000000..e696208 --- /dev/null +++ b/content/post/2008-9-27-highlight-link-based-on-current-page-in-rails.markdown @@ -0,0 +1,31 @@ +--- +layout: post +title: "Highlight link based on current page in rails" +date: 2008-09-27T19:47:00Z +comments: false +permalink: /post/52081481/highlight-link-based-on-current-page-in-rails +categories: +--- + + + +This is common pattern in website navigation, where it highlights the link (usually by setting `class=”active”`) that took you to the current page while you are on that page. + +First, define a helper: + +```ruby +def is_active?(page_name) + "active" if params[:action] == page_name +end + +``` + +Then call it in your link_to’s in your layout as such: + +```ruby +link_to 'Home', '/', :class => is_active?("index") +link_to 'About', '/about', :class => is_active?("about") +link_to 'contact', '/contact', :class => is_active?("contact") +``` + +This effect is achieved due to how link_to handles being passed `nil` for its `:class`, so when `is_active?` returns `nil` (because its not the current page), `link_to` outputs nothing as its class (not `class=””` as you might expect). |