module ViewModel::ActiveRecord::Controller
def create(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context)
def create(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context) update_hash, refs = parse_viewmodel_updates view = nil pre_rendered = viewmodel_class.transaction do view = viewmodel_class.deserialize_from_view(update_hash, references: refs, deserialize_context: deserialize_context) ViewModel.preload_for_serialization(view, serialize_context: serialize_context) view = yield(view) if block_given? prerender_viewmodel(view, serialize_context: serialize_context) end render_json_string(pre_rendered) view end
def destroy(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context)
def destroy(serialize_context: new_serialize_context, deserialize_context: new_deserialize_context) viewmodel_class.transaction do view = viewmodel_class.find(viewmodel_id, eager_include: false, serialize_context: serialize_context) view.destroy!(deserialize_context: deserialize_context) end render_viewmodel(nil) end
def index(scope: nil, viewmodel_class: self.viewmodel_class, serialize_context: new_serialize_context(viewmodel_class: viewmodel_class))
def index(scope: nil, viewmodel_class: self.viewmodel_class, serialize_context: new_serialize_context(viewmodel_class: viewmodel_class)) views = nil pre_rendered = viewmodel_class.transaction do views = viewmodel_class.load(scope: scope, serialize_context: serialize_context) views = yield(views) if block_given? prerender_viewmodel(views, serialize_context: serialize_context) end render_json_string(pre_rendered) views end
def migrated_deep_schema_version
def migrated_deep_schema_version ViewModel::Migrator.migrated_deep_schema_version(viewmodel_class, migration_versions, include_referenced: true) end
def migration_versions
def migration_versions @migration_versions ||= begin version_spec = if params.include?(:versions) params[:versions] elsif request.headers.include?(MIGRATION_VERSION_HEADER) begin JSON.parse(request.headers[MIGRATION_VERSION_HEADER]) rescue JSON::ParserError raise ViewModel::Error.new(status: 400, detail: "Invalid JSON in #{MIGRATION_VERSION_HEADER}") end else {} end versions = IknowParams::Parser.parse_value( version_spec, with: IknowParams::Serializer::HashOf.new( IknowParams::Serializer::String, IknowParams::Serializer::Integer)) migration_versions = {} versions.each do |view_name, required_version| viewmodel_class = ViewModel::Registry.for_view_name(view_name) if viewmodel_class.schema_version != required_version migration_versions[viewmodel_class] = required_version end rescue ViewModel::DeserializationError::UnknownView # Ignore requests to migrate types that no longer exist next end migration_versions.freeze end end
def parse_viewmodel_updates
def parse_viewmodel_updates super.tap do |update_hash, refs| if migration_versions.present? migrator = ViewModel::UpMigrator.new(migration_versions) migrator.migrate!({ 'data' => update_hash, 'references' => refs }) end end end
def prerender_viewmodel(*)
def prerender_viewmodel(*) super do |jbuilder| yield(jbuilder) if block_given? # migrate the resulting structure before it's serialized to a json string if migration_versions.present? tree = jbuilder.attributes! migrator = ViewModel::DownMigrator.new(migration_versions) migrator.migrate!(tree) end end end
def show(scope: nil, viewmodel_class: self.viewmodel_class, serialize_context: new_serialize_context(viewmodel_class: viewmodel_class))
def show(scope: nil, viewmodel_class: self.viewmodel_class, serialize_context: new_serialize_context(viewmodel_class: viewmodel_class)) view = nil pre_rendered = viewmodel_class.transaction do view = viewmodel_class.find(viewmodel_id, scope: scope, serialize_context: serialize_context) view = yield(view) if block_given? prerender_viewmodel(view, serialize_context: serialize_context) end render_json_string(pre_rendered) view end
def viewmodel_id
def viewmodel_id parse_param(:id) end