67 lines
1.9 KiB
Ruby
67 lines
1.9 KiB
Ruby
|
module CouchRest
|
||
|
module Validation
|
||
|
|
||
|
##
|
||
|
#
|
||
|
# @author Guy van den Berg
|
||
|
# @since 0.9
|
||
|
class MethodValidator < GenericValidator
|
||
|
|
||
|
def initialize(field_name, options={})
|
||
|
super
|
||
|
@field_name, @options = field_name, options.clone
|
||
|
@options[:method] = @field_name unless @options.has_key?(:method)
|
||
|
end
|
||
|
|
||
|
def call(target)
|
||
|
result, message = target.send(@options[:method])
|
||
|
add_error(target, message, field_name) unless result
|
||
|
result
|
||
|
end
|
||
|
|
||
|
def ==(other)
|
||
|
@options[:method] == other.instance_variable_get(:@options)[:method] && super
|
||
|
end
|
||
|
end # class MethodValidator
|
||
|
|
||
|
module ValidatesWithMethod
|
||
|
|
||
|
##
|
||
|
# Validate using the given method. The method given needs to return:
|
||
|
# [result::<Boolean>, Error Message::<String>]
|
||
|
#
|
||
|
# @example [Usage]
|
||
|
#
|
||
|
# class Page
|
||
|
#
|
||
|
# property :zip_code, String
|
||
|
#
|
||
|
# validates_with_method :in_the_right_location?
|
||
|
#
|
||
|
# def in_the_right_location?
|
||
|
# if @zip_code == "94301"
|
||
|
# return true
|
||
|
# else
|
||
|
# return [false, "You're in the wrong zip code"]
|
||
|
# end
|
||
|
# end
|
||
|
#
|
||
|
# # A call to valid? will return false and
|
||
|
# # populate the object's errors with "You're in the
|
||
|
# # wrong zip code" unless zip_code == "94301"
|
||
|
#
|
||
|
# # You can also specify field:
|
||
|
#
|
||
|
# validates_with_method :zip_code, :in_the_right_location?
|
||
|
#
|
||
|
# # it will add returned error message to :zip_code field
|
||
|
#
|
||
|
def validates_with_method(*fields)
|
||
|
opts = opts_from_validator_args(fields)
|
||
|
add_validator_to_context(opts, fields, CouchRest::Validation::MethodValidator)
|
||
|
end
|
||
|
|
||
|
end # module ValidatesWithMethod
|
||
|
end # module Validation
|
||
|
end # module CouchRest
|