Ruby on rails 3 Rails中聚合属性组合的简单表单自定义输入
我正在尝试为一个Rails 3模型的简单表单gem编写一个自定义输入,该模型有一个composited\u of aggregate属性。请参见下面的示例 我尝试为使用字段,但它会生成参数,如Ruby on rails 3 Rails中聚合属性组合的简单表单自定义输入,ruby-on-rails-3,activerecord,simple-form,Ruby On Rails 3,Activerecord,Simple Form,我正在尝试为一个Rails 3模型的简单表单gem编写一个自定义输入,该模型有一个composited\u of aggregate属性。请参见下面的示例 我尝试为使用字段,但它会生成参数,如“person”=>{“name”=>{“fname”=>“James”,“middle”=>“T”,“lname”=>“Kirk”},而person不会处理这些参数。创建或像关联一样更新属性 给出以下错误 undefined method `fname' for {"fname"=>"James",
“person”=>{“name”=>{“fname”=>“James”,“middle”=>“T”,“lname”=>“Kirk”}
,而person不会处理这些参数。创建或像关联一样更新属性
给出以下错误
undefined method `fname' for {"fname"=>"James", "middle"=>"T", "lname"=>"Kirk"}:ActiveSupport::HashWithIndifferentAccess
您将如何实现这一点
范例
$ rails g scaffold person last_name:string first_name:string middle_name:string
lib/fullname.rb
class Fullname
attr_reader :fname, :middle, :lname
def initialize(fname, middle, lname)
@fname, @middle, @lname = fname, middle, lname
end
end
app/models/person.rb
class Person < ActiveRecord::Base
composed_of :name,
:class_name => 'Fullname',
:mapping =>
[ # database # Fullname
[:first_name, :fname],
[:middle_name, :middle],
[:last_name, :lname]
],
:allow_nil => true
end
app/inputs/fullname_input.rb
class FullnameInput < SimpleForm::Inputs::Base
def input
@builder.simple_fields_for attribute_name, :validate => false do |form|
[ 'First:', form.input_field(:fname, :size => 10),
'Middle:', form.input_field(:middle, :size => 5),
'Last:', form.input_field(:lname, :size => 10)
].join(' ').html_safe
end
end
end
class FullnameInputfalse do | form|
['First:',form.input_字段(:fname,:size=>10),
“Middle:”,form.input_字段(:Middle,:size=>5),
“Last:”,form.input_字段(:lname,:size=>10)
].join(“”).html\u安全
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class FullnameInput < SimpleForm::Inputs::Base
def input
@builder.simple_fields_for attribute_name, :validate => false do |form|
[ 'First:', form.input_field(:fname, :size => 10),
'Middle:', form.input_field(:middle, :size => 5),
'Last:', form.input_field(:lname, :size => 10)
].join(' ').html_safe
end
end
end