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# Enforces a type on a field. Typically setup from ```field :name, Type```
module Volt
# Volt::Boolean can be used if you want a boolean type
class Boolean
end
class TypeValidator
def self.validate(model, field_name, args)
errors = {}
value = model.get(field_name)
type_restriction = args.is_a?(Hash) ? (args[:type] || args[:types]) : args
# Make into an array of 1 if its not already an array.
type_restrictions = [type_restriction].flatten
valid_type = false
type_restrictions.each do |type_rest|
if value.is_a?(type_rest)
valid_type = true
break
end
end
unless valid_type
if args.is_a?(Hash) && args[:message]
message = args[:message]
else
type_msgs = type_restrictions.map do |type_rest|
if [Fixnum, Float, Numeric].include?(type_rest)
"a number"
elsif type_rest == NilClass
# we don't mention the nil restriction
nil
elsif type_rest == Volt::Boolean
['true', 'false']
elsif type_rest == TrueClass
'true'
elsif type_rest == FalseClass
'false'
else
"a #{type_rest.to_s}"
end
end.flatten
message = "must be #{type_msgs.compact.to_sentence(conjunction: 'or')}"
end
errors[field_name] = [message]
end
errors
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems