Rails的跳過驗證嵌套的屬性，如果條件爲真

Question

我怎麼能跳過驗證了nested_attribute如果條件爲真

aquarium.rb

has_many :fishes 
accepts_nested_attributes_for :fishes, 

fish.rb

belongs_to :aquarium 
validates :ratio, :numericality => { :greater_than => 0 }, if: :skip_this_validation 

然後在aquariums_controller.rb

def some_action 
    @aquarium = Aquarium.new(aqua_params) 
    @aquarium.skip_this_validation = true # i know that this is not valid 
    #must skip validation for ratio and then save to DB 
end 

Answer 1

aquarium.rb

has_many :fishes 
accepts_nested_attributes_for :fishes, 
attr_accessor :skip_fishes_ratio_validation 

fish.rb

belongs_to :aquarium 
validates :ratio, :numericality => { :greater_than => 0 }, unless: proc { |f| f.aquarium&.skip_fishes_ratio_validation } 

然後在aquariums_controller.rb

def some_action 
    @aquarium = Aquarium.new(aqua_params) 
    @aquarium.skip_fishes_ratio_validation = true 
    @aquarium.save 
end 

Answer 2

@aquarium.save(validate: false) 

我相信在模型上跳過驗證。

Answer 3

你可以只添加條件的方法，並檢查conditional validation

class Fish < ActiveRecord::Base 
    validates :ratio, :numericality => { :greater_than => 0 }, if: :custom_validation 

    private 

    def custom_validation 
    # some_condition_here 
    true 
    end 
end