Removed ActionController::Base.scaffold -- it went through the whole idea of...

Removed ActionController::Base.scaffold -- it went through the whole idea of scaffolding (card board walls you remove and tweak one by one). Use the scaffold generator instead (it does resources too now!) [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7429 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
上级 6b0a6472
*SVN*
* Removed ActionController::Base.scaffold -- it went through the whole idea of scaffolding (card board walls you remove and tweak one by one). Use the scaffold generator instead (it does resources too now!) [DHH]
* Optimise named route generation when using positional arguments. [Koz]
This change delivers significant performance benefits for the most
......
module ActionController
module Scaffolding # :nodoc:
def self.included(base)
base.extend(ClassMethods)
end
# Scaffolding is a way to quickly put an Active Record class online by providing a series of standardized actions
# for listing, showing, creating, updating, and destroying objects of the class. These standardized actions come
# with both controller logic and default templates that through introspection already know which fields to display
# and which input types to use. Example:
#
# class WeblogController < ActionController::Base
# scaffold :entry
# end
#
# This tiny piece of code will add all of the following methods to the controller:
#
# class WeblogController < ActionController::Base
# verify :method => :post, :only => [ :destroy, :create, :update ],
# :redirect_to => { :action => :list }
#
# def index
# list
# end
#
# def list
# @entries = Entry.find(:all)
# render_scaffold "list"
# end
#
# def show
# @entry = Entry.find(params[:id])
# render_scaffold
# end
#
# def destroy
# Entry.find(params[:id]).destroy
# redirect_to :action => "list"
# end
#
# def new
# @entry = Entry.new
# render_scaffold
# end
#
# def create
# @entry = Entry.new(params[:entry])
# if @entry.save
# flash[:notice] = "Entry was successfully created"
# redirect_to :action => "list"
# else
# render_scaffold('new')
# end
# end
#
# def edit
# @entry = Entry.find(params[:id])
# render_scaffold
# end
#
# def update
# @entry = Entry.find(params[:id])
# @entry.attributes = params[:entry]
#
# if @entry.save
# flash[:notice] = "Entry was successfully updated"
# redirect_to :action => "show", :id => @entry
# else
# render_scaffold('edit')
# end
# end
# end
#
# The <tt>render_scaffold</tt> method will first check to see if you've made your own template (like "weblog/show.erb" for
# the show action) and if not, then render the generic template for that action. This gives you the possibility of using the
# scaffold while you're building your specific application. Start out with a totally generic setup, then replace one template
# and one action at a time while relying on the rest of the scaffolded templates and actions.
module ClassMethods
# Adds a swath of generic CRUD actions to the controller. The +model_id+ is automatically converted into a class name unless
# one is specifically provide through <tt>options[:class_name]</tt>. So <tt>scaffold :post</tt> would use Post as the class
# and @post/@posts for the instance variables.
#
# It's possible to use more than one scaffold in a single controller by specifying <tt>options[:suffix] = true</tt>. This will
# make <tt>scaffold :post, :suffix => true</tt> use method names like list_post, show_post, and create_post
# instead of just list, show, and post. If suffix is used, then no index method is added.
def scaffold(model_id, options = {})
options.assert_valid_keys(:class_name, :suffix)
singular_name = model_id.to_s
class_name = options[:class_name] || singular_name.camelize
plural_name = singular_name.pluralize
suffix = options[:suffix] ? "_#{singular_name}" : ""
unless options[:suffix]
module_eval <<-"end_eval", __FILE__, __LINE__
def index
list
end
end_eval
end
module_eval <<-"end_eval", __FILE__, __LINE__
verify :method => :post, :only => [ :destroy#{suffix}, :create#{suffix}, :update#{suffix} ],
:redirect_to => { :action => :list#{suffix} }
def list#{suffix}
@#{singular_name}_pages, @#{plural_name} = paginate :#{plural_name}, :per_page => 10
render#{suffix}_scaffold "list#{suffix}"
end
def show#{suffix}
@#{singular_name} = #{class_name}.find(params[:id])
render#{suffix}_scaffold
end
def destroy#{suffix}
#{class_name}.find(params[:id]).destroy
redirect_to :action => "list#{suffix}"
end
def new#{suffix}
@#{singular_name} = #{class_name}.new
render#{suffix}_scaffold
end
def create#{suffix}
@#{singular_name} = #{class_name}.new(params[:#{singular_name}])
if @#{singular_name}.save
flash[:notice] = "#{class_name} was successfully created"
redirect_to :action => "list#{suffix}"
else
render#{suffix}_scaffold('new')
end
end
def edit#{suffix}
@#{singular_name} = #{class_name}.find(params[:id])
render#{suffix}_scaffold
end
def update#{suffix}
@#{singular_name} = #{class_name}.find(params[:id])
@#{singular_name}.attributes = params[:#{singular_name}]
if @#{singular_name}.save
flash[:notice] = "#{class_name} was successfully updated"
redirect_to :action => "show#{suffix}", :id => @#{singular_name}
else
render#{suffix}_scaffold('edit')
end
end
private
def render#{suffix}_scaffold(action=nil)
action ||= caller_method_name(caller)
# logger.info ("testing template:" + "\#{self.class.controller_path}/\#{action}") if logger
if template_exists?("\#{self.class.controller_path}/\#{action}")
render :action => action
else
@scaffold_class = #{class_name}
@scaffold_singular_name, @scaffold_plural_name = "#{singular_name}", "#{plural_name}"
@scaffold_suffix = "#{suffix}"
add_instance_variables_to_assigns
@template.instance_variable_set("@content_for_layout", @template.render_file(scaffold_path(action.sub(/#{suffix}$/, "")), false))
if !active_layout.nil?
render :file => active_layout, :use_full_path => true
else
render :file => scaffold_path('layout')
end
end
end
def scaffold_path(template_name)
File.dirname(__FILE__) + "/templates/scaffolds/" + template_name + ".erb"
end
def caller_method_name(caller)
caller.first.scan(/`(.*)'/).first.first # ' ruby-mode
end
end_eval
end
deprecate :scaffold => 'Controller scaffolding will be moved to a plugin in Rails 2.0. Switch to the generator or `script/plugin install scaffolding`'
end
end
end
<h1>Editing <%= @scaffold_singular_name %></h1>
<%= error_messages_for(@scaffold_singular_name) %>
<%= form(@scaffold_singular_name, :action => "update#{@scaffold_suffix}") %>
<%= link_to "Show", :action => "show#{@scaffold_suffix}", :id => instance_variable_get("@#{@scaffold_singular_name}") %> |
<%= link_to "Back", :action => "list#{@scaffold_suffix}" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Scaffolding</title>
<style>
body { background-color: #fff; color: #333; }
body, p, ol, ul, td {
font-family: verdana, arial, helvetica, sans-serif;
font-size: 13px;
line-height: 18px;
}
pre {
background-color: #eee;
padding: 10px;
font-size: 11px;
}
a { color: #000; }
a:visited { color: #666; }
a:hover { color: #fff; background-color:#000; }
.fieldWithErrors {
padding: 2px;
background-color: red;
display: table;
}
#errorExplanation {
width: 400px;
border: 2px solid red;
padding: 7px;
padding-bottom: 12px;
margin-bottom: 20px;
background-color: #f0f0f0;
}
#errorExplanation h2 {
text-align: left;
font-weight: bold;
padding: 5px 5px 5px 15px;
font-size: 12px;
margin: -7px;
background-color: #c00;
color: #fff;
}
#errorExplanation p {
color: #333;
margin-bottom: 0;
padding: 5px;
}
#errorExplanation ul li {
font-size: 12px;
list-style: square;
}
</style>
</head>
<body>
<p style="color: green"><%= flash[:notice] %></p>
<%= yield %>
</body>
</html>
<h1>Listing <%= @scaffold_plural_name %></h1>
<table>
<tr>
<% for column in @scaffold_class.content_columns %>
<th><%= column.human_name %></th>
<% end %>
</tr>
<% for entry in instance_variable_get("@#{@scaffold_plural_name}") %>
<tr>
<% for column in @scaffold_class.content_columns %>
<td><%= entry.send(column.name) %></td>
<% end %>
<td><%= link_to "Show", :action => "show#{@scaffold_suffix}", :id => entry %></td>
<td><%= link_to "Edit", :action => "edit#{@scaffold_suffix}", :id => entry %></td>
<td><%= link_to "Destroy", {:action => "destroy#{@scaffold_suffix}", :id => entry}, { :confirm => "Are you sure?", :method => :post } %></td>
</tr>
<% end %>
</table>
<%= link_to "Previous page", { :page => instance_variable_get("@#{@scaffold_singular_name}_pages").current.previous } if instance_variable_get("@#{@scaffold_singular_name}_pages").current.previous %>
<%= link_to "Next page", { :page => instance_variable_get("@#{@scaffold_singular_name}_pages").current.next } if instance_variable_get("@#{@scaffold_singular_name}_pages").current.next %>
<br />
<%= link_to "New #{@scaffold_singular_name}", :action => "new#{@scaffold_suffix}" %>
<h1>New <%= @scaffold_singular_name %></h1>
<%= error_messages_for(@scaffold_singular_name) %>
<%= form(@scaffold_singular_name, :action => "create#{@scaffold_suffix}") %>
<%= link_to "Back", :action => "list#{@scaffold_suffix}" %>
<% for column in @scaffold_class.content_columns %>
<p>
<b><%= column.human_name %>:</b>
<%= instance_variable_get("@#{@scaffold_singular_name}").send(column.name) %>
</p>
<% end %>
<%= link_to "Edit", :action => "edit#{@scaffold_suffix}", :id => instance_variable_get("@#{@scaffold_singular_name}") %> |
<%= link_to "Back", :action => "list#{@scaffold_suffix}" %>
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册