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v 2.3.2 - appropriates attributes ending in _type and _value

#2314

If a table has attributes ending in type or value then these attributes cannot be set.

Example:


class CreateIdentifiers < ActiveRecord::Migration
  def self.up
    create_table :identifiers do |t|
      t.integer :entity_id
      t.string :code_type,  :null => false
      t.string :code_value, :null => false
    end
  end

script/console

mi = me.identifiers.build => #mi.code_type = "Xray" => "Xray" mi.code_type => nil mn = Identifier.new => #mn.entity_id = 1 => 1 mn.code_type = "Whisky" => "Whisky" mn => #



If the write_attribute method is used instead, then the values are set but any attribute= overrides are skipped.

Example:

class Identifier < ActiveRecord::Base belongs_to :entity

def code_type=(code)

code.upcase

end

def code_value=(desc)

desc.downcase

end end

script/console

mn.write_attribute("code_type", "MixCase") => "MixCase" mn => #

Reported by James B. Byrne · March 23rd, 2009 @ 05:27 PM

Activity

James B. Byrne

Lost example added:

Using write_attribute skips attribute= processing in model.


>> mn.write_attribute(code_type, "MixCase")
NameError: undefined local variable or method `code_type' for #<Object:0x2b1bc50203f8>
        from (irb):19
>> mn.write_attribute("code_type", "MixCase")
=> "MixCase"
>> mn
=> #<Identifier id: nil, entity_id: 1, code_type: "MixCase", code_value: nil>
>>

March 23rd, 2009 @ 05:31 PM

James B. Byrne
- Title changed from v 2.3.2 - appropriates attributed ending in _type and _value to v 2.3.2 - appropriates attributes ending in _type and _value
March 23rd, 2009 @ 05:32 PM

James B. Byrne

mi = me.identifiers.build 
=> 
mi.code_type = "Xray" 
=> "Xray" 
mi.code_type 
=> nil 
mn = Identifier.new 
=> mn.entity_id = 1 
=> 1 
mn.code_type = "Whisky" 
=> "Whisky" 
mn,code_type
=> nil

March 23rd, 2009 @ 05:36 PM

James B. Byrne

This appears to be dependent upon whether or not the model name forms part of the attribute name. So:

mi = Identity.new
=> ...
mi.x_type = "A Type"
=> "A Type"
mi.x_type
=> "A Type"
mi.identifier_type = "this type"
=> "this type"
mi.identifier_type
=> nil

March 23rd, 2009 @ 07:44 PM

James B. Byrne
- Tag changed from 2.3.2, activerecord, attributes, defect to invalid
Please close. Invalid.

March 23rd, 2009 @ 08:20 PM
Matt Jones
What was the final resolution? Before closing the ticket, it's good to know what happened, in case others run into the same problem.

March 25th, 2009 @ 02:22 AM
James B. Byrne
Sorry for the late replay, I did not get an email notice when the ticket was updated, or missed it if I did.

The error was mine. I had the attr_protected set for those fields in the model that I was testing.

April 30th, 2009 @ 08:22 PM
Frederick Cheung
- State changed from new to invalid
May 7th, 2009 @ 11:20 PM