Attr_accessor as boolean

Rails
1

Hi
I have in my user model

attr_accessor :no_password_validation_needed
with_options :unless => :no_password_validation_needed do |p|
p.validates_length_of :password, :minimum => 6
p.validates_confirmation_of :password
end

 And from controller I do

@user.no_password_validation_needed = false
@user.update_attributes(params[:user])

 And it works perfectly and now validation happens. If it is

@user.no_password_validation_needed = true
Then also I get the expected result as now validation not happens

But now when

@user.no_password_validation_needed = 2 #or any other value

    Now I get unexpected result as validation not happens That is

same result when true? Why this?What modification should I make?Please
help

Thanks in advance
Tom

1 Like
2

On Mar 24, 6:09 am, Tom M. [email protected] wrote:

But now when

@user.no_password_validation_needed = 2 #or any other value

    Now I get unexpected result as validation not happens That is

same result when true? Why this?What modification should I make?Please
help

That’s how truth values work in ruby - anything other than nil or
false is generally considered true.

Fred

3

Does this help?

irb
puts “show” if true
show

puts “show” if false
=> nil

puts “show” if nil
=> nil

puts “show” if 2
show

puts “show” if DateTime.new
show

In ruby it’ll be true unless it receives nil or false.

Kind Regards
Luke

4

On 24 March 2010 08:07, Frederick C. [email protected]
wrote:

That’s how truth values work in ruby - anything other than nil or
false is generally considered true.

Have a look at the Ruby F.s library for their “kernel.true?” method:
http://facets.rubyforge.org/apidoc/api/core/classes/Kernel.html#M000436

It only returns true for a TrueClass object.

If you don’t want to install the whole library, you can write a monkey
patch of your own to add this functionality.