Question

我有一个模型（ProjectedSquad）属于另一个具有许多不同外键的模型（SoldierBio）。我想验证某些字段是否具有仅在行中出现一次的uid值，而其他字段不需要具有唯一值。

是否有高效或Rails方式来运行这些复杂的验证？

截至目前，自定义验证包含嵌套的每个块，并检查每个字段是否包含其他字段中包含的值。它很慢而且很乱，但确实有效。还有更好的方法吗？

这两个对象之间的关系虽然很奇怪，但必须以这种方式构建（ProjectedSquad属于SoldierBio，如lt，lt2，col，gen等......）。

class ProjectedSquad < ActiveRecord::Base

  belongs_to :soldier_bio, foreign_key: :lt_uid
  belongs_to :soldier_bio, foreign_key: :lt2_uid
  belongs_to :soldier_bio, foreign_key: :col_uid
  belongs_to :soldier_bio, foreign_key: :maj_uid
  belongs_to :soldier_bio, foreign_key: :gen_uid
  belongs_to :soldier_bio, foreign_key: :pfc_uid
  belongs_to :soldier_bio, foreign_key: :cpl_uid
  belongs_to :soldier_bio, foreign_key: :medic_uid
  belongs_to :soldier_bio, foreign_key: :radio_uid
  belongs_to :soldier_bio, foreign_key: :tech_uid
  belongs_to :soldier_bio, foreign_key: :sonar_uid

  RANKS = [:lt_uid, :lt2_uid, :col_uid, :maj_uid, :gen_uid, :pfc_uid, :cpl_uid]

  SPECIALS = [:radio_uid, :tech_uid, :sonar_uid, :medic_uid]

  validate :unique_rank
  validate :multiple_specials
  validate :multiple_specials_is_officer


  private

  def unique_rank
    ## can only have one rank

    # RANKS.each do |rank_uid|
      # if array of rank uid values includes self.rank
      # self.errors.add(rank_uid, "can't have multiple ranks")
    # end
  end

 def specials
  ## can have same uid value both for a rank and a special
  ## cannot have same uid in multiple specials
 end

 def multiple_specials_is_officer
  ## same uid for 2 specials
  ## uid cannot appear in pfc_uid or cpl_uid, but can in one other rank    field
 end 


end

Rails中许多字段的复杂验证

0 个答案: