我认为液体是一种弹性模板系统。 命令调查/使用。
违约后,液体模板无法得到任何模型方法。 这是一件好事。 然后,请具体说明可采用哪些方法。 (白人名单)
我使用邮寄名单上的模块。 全面延长期限如下。 它处理液体:通过在班级和单元中添加简单的“方法”方法,为你创建Drop。
那么,在您的榜样中,我们就是这样:
class Blog
# id
# name
has_many :posts
def latest_posts(n)
posts.latest(n) # using a named scope
end
def latest_10_posts;latest_posts(10); end
liquid_methods :id, :name, :posts, :latest_10_posts
end
我不敢肯定你如何/如果能够把 para子带入 drop子。 资产负债表上的Ak。 我认为你能够这样做。
<><><> 我现在重新谈了你的问题,并看到你希望把这个段落寄给这个方法。 你可以在不止一个论点/参数上向液体过滤器发送。 因此,你可以有一个过滤器:
# Define as a Liquid filter
def latest_posts(blog, n)
blog.latest(n)
end
# then call the filter in a template:
{{ blog2 | latest_posts: 10 }}
# Note that the second param is after the filter name.
在这方面,还记得,你也需要在员额类别中宣布清算方法。
此处是单元的延伸。
# By dd -- http://groups.google.com/group/liquid-templates/browse_thread/thread/bf48cfebee9fafd9
# This extension is usesd in order to expose the object of the implementing class
# to liquid as it were a Drop. It also limits the liquid-callable methods of the instance
# to the allowed method passed with the liquid_methods call
# Example:
#
# class SomeClass
# liquid_methods :an_allowed_method
#
# def an_allowed_method
# this comes from an allowed method
# end
# def unallowed_method
# this will never be an output
# end
# end
#
# if you want to extend the drop to other methods you can define more methods
# in the class <YourClass>::LiquidDropClass
#
# class SomeClass::LiquidDropClass
# def another_allowed_method
# and this is another allowed method
# end
# end
# end
#
# usage:
# @something = SomeClass.new
#
# template:
# {{something.an_allowed_method}}{{something.unallowed_method}}{{something.another_allowed_method}}
#
# output:
# this comes from an allowed method and this is another allowed method
#
# You can also chain associations, by adding the liquid_method calls in the
# association models.
#
class Module
def liquid_methods(*allowed_methods)
drop_class = eval "class #{self.to_s}::LiquidDropClass < Liquid::Drop; self; end"
define_method :to_liquid do
drop_class.new(self)
end
drop_class.class_eval do
allowed_methods.each do |sym|
define_method sym do
@object.send sym
end
end
def initialize(object)
@object = object
end
end
end
end