我一直在试图找出一些代码.我有一个表单,我试图使用
Wicked和Cocoon宝石.一切正常,包括link_to_add_association功能.我正在像Cocoon所推荐的那样渲染一些关联的表单域,并且除了link_to_remove_association函数之外,一切似乎都在工作.它返回以下错误：
未定义的方法new_record？为nil：NilClass
这是我的部分是抛出错误：
<div class="nested-fields">
<div>
<%= f.input :address1 %>
</div>
<div>
<%= f.input :address2 %>
</div>
<div>
<%= f.input :city %>
</div>
<div>
<%= f.input :state %>
</div>
<div>
<%= f.input :postal %>
</div>
<div>
<%= link_to_remove_association "remove task",f %>
</div>
</div>
这是调用部分的视图：
<%= simple_form_for @vendor,url: wizard_path do |f| %>
<div id="locations">
<%= f.simple_fields_for :locations do |location| %>
<%= render 'location_fields',:f => location %>
<% end %>
<div class="links">
<%= link_to_add_association 'add location',f,:locations %>
</div>
</div>
<div class="actions">
<%= f.submit "Continue" %>
</div>
<% end %>
这是调用视图的控制器动作：
class UserStepsController < ApplicationController
include Wicked::Wizard
steps :personal,:locations
def show
@vendor = current_vendor_user.vendor
@vendor.locations.build
render_wizard
end
def link_to_remove_association(*args,&block)
if block_given?
f = args.first
html_options = args.second || {}
name = capture(&block)
link_to_remove_association(name,html_options)
else
name = args[0]
f = args[1]
html_options = args[2] || {}
**is_dynamic = f.object.new_record?**
html_options[:class] = [html_options[:class],"remove_fields #{is_dynamic ? 'dynamic' : 'existing'}"].compact.join(' ')
hidden_field_tag("#{f.object_name}[_destroy]") + link_to(name,'#',html_options)
end
end