Module StripAttributes
In: lib/strip_attributes.rb

Methods

narrow   strip_attributes!  

Public Class methods

narrow(attributes, options)

Necessary because Rails has removed the narrowing of attributes using :only and :except on Base#attributes

[Source]

    # File lib/strip_attributes.rb, line 16
16:   def self.narrow(attributes, options)
17:     if options.nil?
18:       attributes
19:     else
20:       if except = options[:except]
21:         except = Array(except).collect { |attribute| attribute.to_s }
22:         attributes.except(*except)
23:       elsif only = options[:only]
24:         only = Array(only).collect { |attribute| attribute.to_s }
25:         attributes.slice(*only)
26:       else
27:         raise ArgumentError, "Options does not specify :except or :only (#{options.keys.inspect})"
28:       end    
29:     end
30:   end

Public Instance methods

strip_attributes!(options = nil)

Strips whitespace from model fields and converts blank values to nil.

[Source]

    # File lib/strip_attributes.rb, line 3
 3:   def strip_attributes!(options = nil)
 4:     before_validation do |record|
 5:       attributes = StripAttributes.narrow(record.attributes, options)
 6:       attributes.each do |attr, value|
 7:         if value.respond_to?(:strip)
 8:           record[attr] = (value.blank?) ? nil : value.strip
 9:         end
10:       end
11:     end
12:   end

[Validate]