Question

我有模特

class Profile < ActiveRecord::Base
  belongs_to :user
  has_many :user_interests
  has_many :interests, :through => :user_interests
  accepts_nested_attributes_for :user_interests
end

class UserInterest < ActiveRecord::Base
  belongs_to :profile
  belongs_to :interest
end

class Interest < ActiveRecord::Base
  has_many :user_interests
  has_many :profiles, :through => :user_interests
end

controller

private
    def profile_params
      params.require(:profile).permit(:first_name, :last_name, :date_of_birth, user_interests_attributes: {:interest => []})
    end

视图

=#"http://stackoverflow.com/questions/18428871/multi-column-forms-with-fieldsets"
= simple_form_for(@profile, html: {class: 'form-horizontal'}) do |f|
  .well.well-lg
    %fieldset
      %legend Personal Information
      .row
        .col-sm-4
          .form-group
            = f.input :first_name, label: 'First Name*'
            = f.hint 'No special characters, please!'
        .col-sm-4
          .form-group
            = f.input :last_name, label: 'First Name*'
            = f.hint 'No special characters, please!'
      .row
        .col-sm-4
          .form-group
            = f.input :date_of_birth, as: :string, 'data-behaviour'=>'datepicker'
      %legend Other Information
      .row
        .col-sm-4
          .form-group
            = f.simple_fields_for :user_interests, UserInterest.new do |s|
              = s.collection_select(:interest, Interest.all, :id, :name,{},{:multiple=>true})
            = f.hint 'Please use Ctrl key on your keyboard to select multiple items'
      .row
        = f.submit

但是获取错误未允许的参数

profile_params

未经许可的参数：兴趣

=＆GT; {“first_name”=＆gt;“”，“last_name”=＆gt;“”，“date_of_birth”=＆gt;“”，“user_interests_attributes”=＆gt; {“0”=＆gt; {}}}

我的参数是：

PARAMS   =＆GT; {“utf8”=＆gt;“✓”，“_ method”=＆gt;“patch”，“authenticity_token”=＆gt;“7 / 7sKljbi88cmUOen / WFWzhzV6exE8I8fBnNMA5EELw =”，   “简档”=＆GT; {“first_name”=＆gt;“”，“last_name”=＆gt;“”，
  “DATE_OF_BIRTH”=＆gt; “中”，
  “user_interests_attributes”=＆GT; { “0”=＆GT; { “兴趣”=＆gt; “中测试”}}}，   “commit”=＆gt;“更新个人资料”，“行动”=＆gt;“更新”，   “controller”=＆gt;“profiles”，“id”=＆gt;“1”}

请纠正我错在哪里

Answer 1

您忘记在UserInterest上添加accepts_nested_attributes_for :interest。

class Profile < ActiveRecord::Base
  belongs_to :user
  has_many :user_interests
  has_many :interests, :through => :user_interests
  accepts_nested_attributes_for :user_interests
end

class UserInterest < ActiveRecord::Base
  belongs_to :profile
  belongs_to :interest
  accepts_nested_attributes_for :interest
end

class Interest < ActiveRecord::Base
  has_many :user_interests
  has_many :profiles, :through => :user_interests
end

您可能必须将兴趣定义为控制器中strong_parameters定义的有效参数。

nested_attributes with simple_field_for获取未经许可的参数错误轨道

1 个答案: