forked from Agowan/imperator
/
rest.rb
70 lines (58 loc) · 1.65 KB
/
rest.rb
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class Imperator::Command
module Rest
class << self
attr_writer :object_class
def create_action &block
action do
object_class.create attribute_set if object_class
yield
end
end
def update_action &block
action do
find_object.update_attributes attribute_set if find_object
yield
rescue e: Imperator::ResourceNotFoundError
on_error e
end
end
def delete_action &block
action do
find_object.delete
yield
end
end
def on_error &block
define_method(:on_error, &block)
end
def for_class clazz
@object_class = clazz
end
def object_class
@object_class ||= filtered_class_name
end
protected
# convert to underscore format, fx UpdatePostCommand becomes update_post_command
# remove 'create', 'update' or 'delete' in the front of name: _post_command
# then remove command at the back: _post_
# then remove any '_': post
def filtered_class_name
self.class.name.underscore.sub(/^(create|update|delete)/, '').sub(/command$/, '').sub(/_/, '')
end
end
def object_class
self.class.object_class
end
def on_error exception
raise Imperator::InvalidCommandError, "The Command #{self} caused an error: #{exception}"
end
def find_object
object ||= object_class.find(self.id)
rescue
find_object_error
end
def find_object_error
raise Imperator::ResourceNotFoundError, "The resource #{self.id} could not be found"
end
end
end