Mjs

A slice for the Merb framework that offers Ajax actions like RJS with jQuery This privides new 'link_to' method for clients and 'page' object for servers.

Methods

Merb::Controller#link_to(name, url='', opts={}) link_to now recognize :remote, :submit option
Merb::Controller#page page method is reserved for RJS object. You can access dom elements by it as many times and in anywhere. No more ugly render(:update) block, just type 'page' as you want!

Setup

Include jQuery as usual

app/views/layouts/application.html.erb:

<%= js_include_tag  "jquery.js" -%>

Example1

[ajax get request]

Add :remote option to create ajax link

app/views/top/index.html.erb:
<%= link_to "hello", url(:action=>"hello"), :remote=>true %> ^^^^^^^^^^^^^ generates: hello
Use 'page' object to respond as RJS.

app/controllers/top.rb: def hello page.text "Good morning!" return page end

generates: $("#message").text("Good morning!");

Example2

[ajax post request]

Add :submit option to specify a DOM element that should be serialized

app/views/top/index.html.erb:
<%= text_field ... %> <%= text_area ... %> <%= link_to "update", url(:action=>"update"), :submit=>:edit %> ^^^^^^^^^^^^^ generates: update

enjoy 'page' as you like

app/controllers/top.rb: def update(id) @item = Item.find(id) ... # update logic is here page.text "successfully saved" update_canvas_for(@item) return page end

private
  def update_canvas_for(item)
    page[:workspace].html partial("record", :item=>item)
  rescue => error
    page[:message].text error.to_s
    page << "alert('something wrong!')"
  end