ActiveRecord :: RecordInvalid：验证失败：密钥不能为空

Question

After updating to Rails 4.0, I am getting this error.

ActiveRecord::RecordInvalid (Validation failed: Key can't be blank):
  app/models/users_setting.rb:25:in `update_value'
  app/controllers/management_reports/employee_onboarding_controller.rb:35:in `update_filter_values'
  app/controllers/management_reports/employee_onboarding_controller.rb:57:in `prepare_to_read_data'
  app/controllers/management_reports/employee_onboarding_controller.rb:11:in `index'

This is the method:

def update_value options={}
  binding.pry
    self.update_attributes!({:value => options.inspect})
  end

pry shows me this:

[5] pry(#<UsersSetting>)> self.update_attributes!({:value => options.inspect})
   (5.0ms)  BEGIN
   (5.0ms)  BEGIN
   (4.8ms)  ROLLBACK
   (4.8ms)  ROLLBACK
ActiveRecord::RecordInvalid: Validation failed: Key can't be blank
from /Users/justinhung/.rvm/gems/ruby-2.1.10/gems/activerecord-4.0.0/lib/active_record/validations.rb:57:in `save!'
[6] pry(#<UsersSetting>)> options
=> {:status=>"-1", :client_id=>"-100"}
[7] pry(#<UsersSetting>)> :value
=> :value
[8] pry(#<UsersSetting>)> value
=> "{:status=>\"-1\", :client_id=>\"-100\"}"
[9] pry(#<UsersSetting>)> :value => options.inspect
SyntaxError: unexpected =>, expecting end-of-input
:value => options.inspect
         ^
[9] pry(#<UsersSetting>)> options.inspect
=> "{:status=>\"-1\", :client_id=>\"-100\"}"
[10] pry(#<UsersSetting>)> options
=> {:status=>"-1", :client_id=>"-100"}

Not sure how to proceed, any help would be appreciated.

Answer 1

See options itself is a hash so you just need to pass options try,

self.update_attributes!(options)

where status and client_id are model attributes.

Key can't blank and value can't blank are the rails validation error messages coming because of maybe you set presence true for these two fields.

If you want to skip validation you can do the following so that when you update rails don't shout for key and value presence.

def update_value options={}
  self.status = options[:status]
  self.client_id = options[:client_id]
  self.save(validate: false)
end