method

link_to_unless

v2.0.3 - Show latest stable - 0 notes - Class: ActionView::Helpers::UrlHelper

link_to_unless(condition, name, options = {}, html_options = {}, &block) public

Creates a link tag of the given name using a URL created by the set of options unless condition is true, in which case only the name is returned. To specialize the default behavior (i.e., show a login link rather than just the plaintext link text), you can pass a block that accepts the name or the full argument list for link_to_unless.

Examples

  <%= link_to_unless(@current_user.nil?, "Reply", { :action => "reply" }) %>
  # If the user is logged in...
  # => <a href="/controller/reply/">Reply</a>

  <%=
     link_to_unless(@current_user.nil?, "Reply", { :action => "reply" }) do |name|
       link_to(name, { :controller => "accounts", :action => "signup" })
     end
  %>
  # If the user is logged in...
  # => <a href="/controller/reply/">Reply</a>
  # If not...
  # => <a href="/accounts/signup">Reply</a>

Show source

# File actionpack/lib/action_view/helpers/url_helper.rb, line 294
      def link_to_unless(condition, name, options = {}, html_options = {}, &block)
        if condition
          if block_given?
            block.arity <= 1 ? yield(name) : yield(name, options, html_options)
          else
            name
          end
        else
          link_to(name, options, html_options)
        end
      end

link_to_unless

Related methods

Examples