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我一直在試圖找出一些代碼。我有一個表格,我嘗試使用Wicked和Cocoon寶石。一切正常,包括link_to_add_association
功能。我正在像Cocoon建議的那樣渲染關聯的表單域的一部分,除了link_to_remove_association
函數之外,似乎所有東西都可以正常工作。它返回以下錯誤:Rails Cocoon Gem:未定義方法'new_record?'在link_to_remove_association與邪惡
未定義的方法new_record?
爲無:NilClass
這裏是我的部分是引發錯誤:
<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>
這裏是正在調用的部分觀點:
<%= 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 %>
以下是調用視圖的控制器操作:
class UserStepsController < ApplicationController
include Wicked::Wizard
steps :personal, :locations
def show
@vendor = current_vendor_user.vendor
@vendor.locations.build
render_wizard
end
櫃面有幫助,這裏是繭函數拋出錯誤:
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, f, 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
我從來沒有猜到過。謝謝! – Tim