Ruby on rails PG运算符不存在：uuid=文本

我有一个模型

对话

，

用户

，通过

有很多*连接，通过：用户对话

我有这个范围：

class Conversation < ActiveRecord::Base
  has_many :users_conversations
  has_many :users, through: :users_conversations

  scope :by_participants, ->(ids) {
    joins(:users).where("users.id = ALL (ARRAY[?])", ids)
  }
end

你试过这个吗

class Conversation < ActiveRecord::Base
  has_many :users_conversations
  has_many :users, through: :users_conversations

  scope :by_participants, ->(ids) {
    joins(:users).where("users.id = ALL (ARRAY[?]::uuid[])", ids)
    # it's all about ARRAY[?]::uuid[] type cast
  }
end

类对话（ids）{
联接（：users）.where（：users.id=ALL（数组[？]：：uuid[]），id）
#这都是关于数组[？]：：uuid[]类型转换的
}
结束

---

您的目标列是

：：uuid[]

，但源列是

text

，只需键入cast并查看结果。

您是否尝试过任何（

连接（：users）。其中（“users.id=ANY（ARRAY[？]），ids）

）而不是所有？@imechemi，它不太可能解决问题，也不是我需要的

HINT:  No operator matches the given name and argument type(s). You might need to add explicit type casts.
       : SELECT  "conversations".* FROM "conversations" INNER JOIN "users_conversations" ON "users_conversations"."conversation_id" = "conversations"."id" INNER JOIN "users" ON "users"."id" = "users_conversations"."user_id" WHERE (users.id = ALL (ARRAY['cast (6d4ff0b3-e148-40f8-87b5-d4d03577577a as uuid)','cast (432f4f6e-5832-4831-80dc-c747b8d3e742 as uuid)']))  

class Conversation < ActiveRecord::Base
  has_many :users_conversations
  has_many :users, through: :users_conversations

  scope :by_participants, ->(ids) {
    joins(:users).where("users.id = ALL (ARRAY[?]::uuid[])", ids)
    # it's all about ARRAY[?]::uuid[] type cast
  }
end