Rails 3 迁移如何使用我的 ApplicationHelper 和 WidgetsHelper 中的方法？
我创建了一个迁移来重新格式化数据库中的一些内容（将格式为“my-name-city-state”的友好链接添加到我的商店记录中），但是 rake db:migrate 失败并且 说
undefined method `make_friendly_link' for #<ActiveRecord::ConnectionAdapters::SQLite3Adapter:0x3f90f30>
当我的迁移尝试访问 StoresHelper 中的 make_Friendly_link 方法时
。我尝试显式包含 ApplicationHelper 和 StoresHelper，但它仍然失败。
我的迁移是：
class FriendlyLinkForEveryone < ActiveRecord::Migration
include ModelHelper
include ApplicationHelper
include StoresHelper
def self.up
Store.find(:all).each do |store|
puts "STORE: #{store.name} #{store.city} #{store.state}"
if store.friendly_link.blank?
store.update_attributes :friendly_link => make_friendly_link(store.name, store.city, store.state)
end
end
end
def self.down
end
end
make_Friendly_link 方法位于我的stores_helper.rb 中，它调用我的application_helper.rb 中的方法
I've created a migration to reformat a few things in the database (adding a friendly link in format 'my-name-city-state' to my Stores records), but rake db:migrate fails and says
undefined method `make_friendly_link' for #<ActiveRecord::ConnectionAdapters::SQLite3Adapter:0x3f90f30>
when my migration tries to access the method make_friendly_link in my StoresHelper.
I tried explicitly including the ApplicationHelper and StoresHelper, butit still fails.
My migration is:
class FriendlyLinkForEveryone < ActiveRecord::Migration
include ModelHelper
include ApplicationHelper
include StoresHelper
def self.up
Store.find(:all).each do |store|
puts "STORE: #{store.name} #{store.city} #{store.state}"
if store.friendly_link.blank?
store.update_attributes :friendly_link => make_friendly_link(store.name, store.city, store.state)
end
end
end
def self.down
end
end
The make_friendly_link method is in my stores_helper.rb and it calls a method in my application_helper.rb
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有点黑客，但你可以这样做：
Kind of hack, but you can do: