rails 3.1通过模板解析器模板特定的布局?
问题描述:
我有一个非常简单的模板解析器从数据库返回的模板:rails 3.1通过模板解析器模板特定的布局?
class MyResolver < ActionView::PathResolver
def query path, details, formats
template = MyTemplate.find_by_path path
...
ActionView::Template.new template.source, identifier, handler, details
end
end
这部分的伟大工程......我想不通的是如何告诉Rails使用与相关布局从数据库中拉出的模板(即,template.layout_name或其他)。
class MyResolver < ActionView::PathResolver
def query path, details, formats
template = MyTemplate.find_by_path path
layout template.layout_name # ??? yes? no?
ActionView::Template.new template.source, identifier, handler, details
end
end
有没有什么我可以调用上述查询方法来设置布局?我应该不是返回一个ActionView :: Template,而是返回带有相应AV :: T方法的模板类,然后重写渲染堆栈的其他部分,并使用template.layout_name?
答
你不得不做这样的事情:
pages_controller.rb:
class PagesController < ApplicationController
prepend_view_path PageTemplate::Resolver.instance
def render_page
#Some logic to retrieve the @site & @current_page records....
render :layout => @site.layout.path, :template => @current_page.template.path
end
.
.
.
型号/ page_template.rb:
class Resolver < ActionView::Resolver
require "singleton"
include Singleton
def find_templates(name, prefix, partial, details)
if prefix.empty?
#If this is not a layout, look it up in the views table and pass that record to the init function
initialize_template('Template', record)
end
elsif prefix === 'layouts'
#If this is a layout, look it up in the layouts table and pass that record to the init function
initialize_template('Layout', record)
end
end
end
# Initialize an ActionView::Template object based on the record found.
def initialize_template(type, record)
source = record.body
identifier = "#{type} - #{record.id} - #{record.path.inspect}"
handler = ActionView::Template.registered_template_handler(record.handler)
details = {
:format => Mime[record.format],
:updated_at => record.updated_at,
:virtual_path => virtual_path(record.path, record.partial)
}
ActionView::Template.new(source, identifier, handler, details)
end
# Make paths as "users/user" become "users/_user" for partials.
def virtual_path(path, partial)
return path unless partial
if index = path.rindex("/")
path.insert(index + 1, "_")
else
"_#{path}"
end
end
end
当然,这可以被重构相当位,但这是一般的想法。您还需要1或2个数据库表,这取决于您希望单独存储模板和布局的天气,或与以下列一起存储模板和布局:标题,正文,路径,格式,区域设置,处理程序,部分
希望有所帮助!
你有没有找到一个工作解决方案?目前我做的和我在控制器中定义的任何布局一样,例如'layout“public”',将被忽略。所有渲染的都是视图的内容 - 根本没有布局。 –