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Contents
module Volt
class NumericalityValidator
def self.validate(model, field_name, args)
# Construct the class and return the errors
new(model, field_name, args).errors
end
attr_reader :errors
def initialize(model, field_name, args)
@field_name = field_name
@args = args
@errors = {}
@value = model.get(field_name)
# Convert to float if it is a string for a float
# The nil check and the nan? check are only require for opal 0.6
unless @value.nil?
@value = Kernel.Float(@value) rescue nil
@value = nil if RUBY_PLATFORM == 'opal' && @value.nan?
end
check_errors
end
def add_error(error)
field_errors = (@errors[@field_name] ||= [])
field_errors << error
end
# Looks at the value
def check_errors
if @value && @value.is_a?(Numeric)
if @args.is_a?(Hash)
@args.each do |arg, val|
case arg
when :min
if @value < val
add_error("number must be greater than #{val}")
end
when :max
if @value > val
add_error("number must be less than #{val}")
end
end
end
end
else
message = (@args.is_a?(Hash) && @args[:message]) || 'must be a number'
add_error(message)
end
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems