3
我不知道我问这个问题是正确的,还是太累了,因为它是显而易见的。collection_select给ActiveRecord :: AssociationTypeMismatch
我的代码是:
_form.html.haml
= f.collection_select :category, Category.where(:user_id => current_user.id), :id, :name
我得到的是
ActiveRecord::AssociationTypeMismatch in LinksController#create
Category(#70203963939880) expected, got String(#70203929255820)
日志被
Started POST "/links" for 127.0.0.1 at 2012-11-12 22:14:05 -0800
Processing by LinksController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"z4RYcUW3hGLfKBAwQLMZbye2I1mn16fg6BSBGe7GILU=", "link"=>{"name"=>"SFGate", "url"=>"http://www.sfgate.com/", "category"=>"1"}, "commit"=>"Save"}
Completed 500 Internal Server Error in 0ms
看来好像它的消逝:id作为一个字符串而不是一个整数。任何线索?
更新:
class Category < ActiveRecord::Base
belongs_to :user
has_many :links
attr_accessible :name, :color, :position
COLOR_CODES = ["Green", "Blue", "Yellow", "Orange", "Red", "Purple", "Pink"]
end
class Link < ActiveRecord::Base
belongs_to :user
belongs_to :category
attr_accessible :category, :name, :position, :url, :user_id
end
修正:我有
t.integer :category
,而不是
t.integer :category_id
切换所做的一切和它的工作完美 - 我想我是太累了:)
我得到的错误:NoMethodError在链接#新的未定义的方法'合并”:名称:符号 – jbolanos
你有外键'category_id'您模型?你在做什么? – Thanh
@jbolanos我更新了我的答案,检查它。 – Thanh