couchrest_model/lib/couchrest/validation/contextual_validators.rb
Matt Aimonetti dfdcd79a58 Started added a validation mixin
Usage:
  class Invoice < CouchRest::ExtendedDocument
    include CouchRest::Validation

    property :client_name
    property :employee_name
    property :location

    # Validation
    validates_present :client_name, :employee_name
    validates_present :location, :message => "Hey stupid!, you forgot the location"

  end
2009-02-02 19:21:32 -08:00

56 lines
1.5 KiB
Ruby

module CouchRest
module Validation
##
#
# @author Guy van den Berg
# @since 0.9
class ContextualValidators
def dump
contexts.each_pair do |key, context|
puts "Key=#{key} Context: #{context}"
end
end
# Get a hash of named context validators for the resource
#
# @return <Hash> a hash of validators <GenericValidator>
def contexts
@contexts ||= {}
end
# Return an array of validators for a named context
#
# @return <Array> An array of validators
def context(name)
contexts[name] ||= []
end
# Clear all named context validators off of the resource
#
def clear!
contexts.clear
end
# Execute all validators in the named context against the target
#
# @param <Symbol> named_context the context we are validating against
# @param <Object> target the resource that we are validating
# @return <Boolean> true if all are valid, otherwise false
def execute(named_context, target)
raise(ArgumentError, 'invalid context specified') if !named_context || (contexts.length > 0 && !contexts[named_context])
target.errors.clear!
result = true
context(named_context).each do |validator|
next unless validator.execute?(target)
result = false unless validator.call(target)
end
result
end
end # module ContextualValidators
end # module Validation
end # module CouchRest