Select 未找到名称-嵌套表单Rails 4的关联
在以下情况下,我对使用嵌套形式的has_many/has_many关系有问题 我有文章,这可以有许多单位(公斤,袋等)。通过我的表格,我需要记录这些数据 因此,我决定使用嵌套形式来处理关系,但我有一个错误:Select 未找到名称-嵌套表单Rails 4的关联,select,ruby-on-rails-4,nested-forms,nested-attributes,has-many,Select,Ruby On Rails 4,Nested Forms,Nested Attributes,Has Many,在以下情况下,我对使用嵌套形式的has_many/has_many关系有问题 我有文章,这可以有许多单位(公斤,袋等)。通过我的表格,我需要记录这些数据 因此,我决定使用嵌套形式来处理关系,但我有一个错误:ArgumentError(未找到名称“article\u unit\u of\u measures”的关联。它是否已定义? 这是我的课程代码: class Article < ActiveRecord::Base has_many :unit_of_measurements,
ArgumentError(未找到名称“article\u unit\u of\u measures”的关联。它是否已定义?
这是我的课程代码:
class Article < ActiveRecord::Base
has_many :unit_of_measurements, :through => :article_unit_of_measurements
accepts_nested_attributes_for :article_unit_of_measurements
end
class ArticleUnitOfMeasurement < ActiveRecord::Base
belongs_to :article
belongs_to :unit_of_measurement
accepts_nested_attributes_for :unit_of_measurement
end
class UnitOfMeasurement < ActiveRecord::Base
has_many :articles, :through => :article_unit_of_measurements
end
这是我的控制器:
class Shop::ArticlesController < ApplicationController
def new
@article = Article.new
@unitOfMeasurement = UnitOfMeasurement.all
render layout: false
end
def create
article = Article.new(article_parameters)
if article.save
flash[:notice] = "Lorem ipsum dolor sit amet."
redirect_to :action => :index
else
flash[:error] = "Lorem ipsum dolor sit amet."
redirect_to :action => :index
end
end
private
def article_parameters
params.require(:article).permit(:name, article_unit_of_measurements_attributes: [:id, :article_id, :unit_of_measurement_id])
end
end
class-Shop::ArticlesController:index
其他的
flash[:error]=“Lorem ipsum door sit amet。”
将_重定向到:action=>:index
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私有的
def物品_参数
参数require(:article).permit(:name,article\u度量单位\u属性:[:id,:article\u id,:unit\u度量单位\u id])
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p.D:已填充的数据单元替换
class Article < ActiveRecord::Base
has_many :unit_of_measurements, :through => :article_unit_of_measurements
accepts_nested_attributes_for :article_unit_of_measurements
end
类文章:文章测量单位
接受以下项的\u嵌套\u属性\u:项目\u度量单位\u
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与
类文章:文章测量单位
接受以下项的\u嵌套\u属性\u:项目\u度量单位\u
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你错过了与文章测量单位有很多联系的
因此,错误ArgumentError(未发现名称“article\u unit\u of \u Measures”的关联)
此问题是否已解决?
class Article < ActiveRecord::Base
has_many :unit_of_measurements, :through => :article_unit_of_measurements
accepts_nested_attributes_for :article_unit_of_measurements
end
class Article < ActiveRecord::Base
has_many :article_unit_of_measurements ## Added association
has_many :unit_of_measurements, :through => :article_unit_of_measurements
accepts_nested_attributes_for :article_unit_of_measurements
end