Plugins - system_messages
Add to favoritesThis plugin displays system messages globally, for a specific object, or for a block.
To generate the necessary model, controller, and migration run the following command:
ruby ./script/generate system_message
To use the plugin, run rake db:migrate to create the SystemMessage model.
The plugin can be used as-is at this point to display global system messages and static system messages.
To set up messages for a specific model, use polymorphic associations:
class User < ActiveRecord::Base
has_many :system_messages, :as => :messageable
end
To link the stylesheet: <%= stylesheet_link_tag 'system_messages' %>
The message dismissal action uses prototype, so you’ll probably want to link in prototype and friends:<%= javascript_include_tag :defaults %>
If you want to change the default style (and you probably will), edit public/stylesheets/system_message.css. You’ll also want to create a CRUD interface to add SystemMessage records.
By default, there are 3 levels of messages that you can specify. error, warn, and info. You can easily add more levels by editing the stylesheet.
NOTE: This plugin only works with Rails 2.1 and up.
Example:
To Display global system messages in your view:<%= system_messages %>
System messages for a specific user (or any other model of your choosing):<%= system_messages_for(current_user) %>
Displaying a system message for the text of your choosing:<% static_system_message('info', 'This is my header text') %>
Blah, Blab, blah
<% end %>
All 3 helpers accept an options hash as the last parameter. If for you need to add non-default attributes to the div (such as overriding the class or id), pass them in as the last argument to the helper.
<%= system_messages(:class => 'foo', :id => 'bar') %>
