【发布时间】:2017-01-09 19:02:07
【问题描述】:
我有一个带有枚举的模型:
enum pending_users: {
pending_users_disabled: 0,
pending_users_enabled: 1
}
下面是 schema.rb 中描述的字段:
t.integer "pending_users", limit: 4, default: 0, null: false
当我尝试使用以下参数通过控制器更新它时:
Parameters: {"utf8"=>"✓", "authenticity_token"=>"...", "group"=>{"pending_users"=>"1"}, "commit"=>"Update Group", "id"=>"33"}
我看到以下错误:
ArgumentError - '1' is not a valid pending_users:
activerecord (4.2.7.1) lib/active_record/enum.rb:104:in `block (3 levels) in enum'
activerecord (4.2.7.1) lib/active_record/attribute_assignment.rb:54:in `_assign_attribute'
activerecord (4.2.7.1) lib/active_record/attribute_assignment.rb:41:in `block in assign_attributes'
actionpack (4.2.7.1) lib/action_controller/metal/strong_parameters.rb:185:in `each_pair'
activerecord (4.2.7.1) lib/active_record/attribute_assignment.rb:35:in `assign_attributes'
activerecord (4.2.7.1) lib/active_record/persistence.rb:251:in `block in update'
activerecord (4.2.7.1) lib/active_record/transactions.rb:351:in `block in with_transaction_returning_status'
activerecord (4.2.7.1) lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction'
activerecord (4.2.7.1) lib/active_record/connection_adapters/abstract/transaction.rb:184:in `within_new_transaction'
activerecord (4.2.7.1) lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `transaction'
activerecord (4.2.7.1) lib/active_record/transactions.rb:220:in `transaction'
activerecord (4.2.7.1) lib/active_record/transactions.rb:348:in `with_transaction_returning_status'
activerecord (4.2.7.1) lib/active_record/persistence.rb:250:in `update'
app/controllers/groups_controller.rb:53:in `update'
在我看来,1 是枚举的有效值。什么会导致这种行为?
【问题讨论】:
-
你真的应该使用
enum pending_users: %w(enabled disabled)。pending_users_前缀是多余的。 -
@meagar 我没有在这里包含整个模型。事实上,我的模型中还有其他启用/禁用的枚举,不幸的是,rails 4 中无法包含几个具有相同值的不同枚举
标签: ruby-on-rails forms activerecord enums