我在模型中使用 validates_associated 来使用其他模型的验证代码。问题是验证失败的消息是“..无效”。
我想将模型验证失败的实际描述性错误冒泡到顶部!
我发现了这个问题: validates associated with model's error message
它有一个看起来非常接近的解决方案:
module ActiveRecord
module Validations
class AssociatedBubblingValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
(value.is_a?(Array) ? value : [value]).each do |v|
unless v.valid?
v.errors.full_messages.each do |msg|
record.errors.add(attribute, msg, options.merge(:value => value))
end
end
end
end
end
module ClassMethods
def validates_associated_bubbling(*attr_names)
validates_with AssociatedBubblingValidator, _merge_attributes(attr_names)
end
end
end
end
然而它实际上遇到了一个错误:
undefined method `valid?' for #<TicketType::ActiveRecord_Associations_CollectionProxy:0x007ff86474a478>
任何人都可以帮助完成这个几乎可以解决的工作!?
完整的错误轨迹是:
undefined method `valid?' for #<TicketType::ActiveRecord_Associations_CollectionProxy:0x007ff8646ba148>
Extracted source (around line #6):
4
5
6
7
8
9
def validate_each(record, attribute, value)
(value.is_a?(Array) ? value : [value]).each do |v|
unless v.valid?
v.errors.full_messages.each do |msg|
record.errors.add(attribute, msg, options.merge(:value => value))
end
Rails.root: /Users/andyarmstrong/Documents/Personal/clazzoo_main
Application Trace | Framework Trace | Full Trace
config/initializers/associated_bubbling_validator.rb:6:in `block in validate_each'
config/initializers/associated_bubbling_validator.rb:5:in `each'
config/initializers/associated_bubbling_validator.rb:5:in `validate_each'
app/controllers/events_controller.rb:158:in `block in create'
最佳答案
value
实际上不是一个Array
,而是一个ActiveRecord::Associations::CollectionProxy
。
所以...
value.is_a?(数组) ?值:[值]
#=> [值]
和
[value].each do |v|
unless v.valid?
# ......
end
end
会引发该错误
undefined method `valid?' for #<TicketType::ActiveRecord_Associations_CollectionProxy:0x007ff86474a478>
你可以试试这个:
module ActiveRecord
module Validations
class AssociatedBubblingValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
((value.kind_of?(Enumerable) || value.kind_of?(ActiveRecord::Relation)) ? value : [value]).each do |v|
unless v.valid?
v.errors.full_messages.each do |msg|
record.errors.add(attribute, msg, options.merge(:value => value))
end
end
end
end
end
module ClassMethods
def validates_associated_bubbling(*attr_names)
validates_with AssociatedBubblingValidator, _merge_attributes(attr_names)
end
end
end
end
关于ruby-on-rails - Rails validates_associated 与模型的错误信息,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31915921/