func (PageResource) BeforeDelete(res kit.Resource, obj kit.Model, user kit.User) apperror.Error {
// Note: other relationship deletion handling happens in models BeforeDelete() hook.
// Files have to be deleted here, since they require the fileService.
// Delete files.
fileService := res.Registry().FileService()
m2m, err := res.Backend().M2M(obj, "Files")
if err != nil {
return err
}
files, err := m2m.All()
if err != nil {
return err
}
// Delete m2m relation.
if err := m2m.Clear(); err != nil {
return err
}
for _, file := range files {
if err := fileService.Delete(file.(kit.File), user); err != nil {
return err
}
}
return nil
}
// ApiFindOne verifies the session and returns user and profile in meta if valid.
func (SessionResourceHooks) ApiFindOne(res kit.Resource, rawId string, r kit.Request) kit.Response {
if rawId == "" {
return kit.NewErrorResponse("empty_token", "Empty token")
}
userService := res.Registry().UserService()
user, session, err := userService.VerifySession(rawId)
if err != nil {
return kit.NewErrorResponse(err)
}
meta := make(map[string]interface{})
if user != nil {
userData, err := res.Backend().ModelToMap(user, true, false)
if err != nil {
return kit.NewErrorResponse("marshal_error", err)
}
meta["user"] = userData
if user.GetProfile() != nil {
profileData, err := res.Backend().ModelToMap(user.GetProfile(), true, false)
if err != nil {
return kit.NewErrorResponse("marshal_error", err)
}
meta["profile"] = profileData
}
}
return &kit.AppResponse{
Data: session,
Meta: meta,
}
}
// Creating a session is equivalent to logging in.
func (hooks SessionResourceHooks) ApiCreate(res kit.Resource, obj kit.Model, r kit.Request) kit.Response {
userService := res.Registry().UserService()
meta := r.GetMeta()
isAnonymous, _ := meta.Bool("anonymous")
// Find user.
userIdentifier := meta.String("user")
adaptor := meta.String("adaptor")
data, _ := meta.Map("authData")
var user kit.User
if !isAnonymous {
if adaptor == "" {
return kit.NewErrorResponse("adaptor_missing", "Expected 'adaptor' in metadata.", true)
}
if data == nil {
kit.NewErrorResponse("no_or_invalid_auth_data", "Expected 'authData' dictionary in metadata.")
}
var err apperror.Error
user, err = userService.AuthenticateUser(userIdentifier, adaptor, data)
if err != nil {
return kit.NewErrorResponse(err)
}
}
session, err := userService.StartSession(user, r.GetFrontend())
if err != nil {
return kit.NewErrorResponse(err)
}
responseMeta := make(map[string]interface{})
if !isAnonymous {
userData, err := res.Backend().ModelToMap(user, true, false)
if err != nil {
return kit.NewErrorResponse("marshal_error", err)
}
responseMeta["user"] = userData
if user.GetProfile() != nil {
profileData, err := res.Backend().ModelToMap(user.GetProfile(), true, false)
if err != nil {
return kit.NewErrorResponse("marshal_error", err)
}
responseMeta["profile"] = profileData
}
}
return &kit.AppResponse{
Data: session,
Meta: responseMeta,
}
}
func (SessionResourceHooks) ApiDelete(res kit.Resource, id string, r kit.Request) kit.Response {
if id != r.GetSession().GetStrId() {
return kit.NewErrorResponse("permission_denied", "Permission denied", 403)
}
if err := res.Backend().Delete(r.GetSession()); err != nil {
return kit.NewErrorResponse("db_delete_error", err, true)
}
return &kit.AppResponse{}
}
func (s *Service) RegisterResource(res kit.Resource) {
if res.Backend() == nil {
if s.defaultBackend == nil {
s.registry.Logger().Panic("Registering resource without backend, but no default backend set on resources.Service")
}
s.defaultBackend.RegisterModel(res.Model())
res.SetBackend(s.defaultBackend)
}
if res.Collection() == "" {
s.registry.Logger().Panic("Registering resource without a model type")
}
s.resources[res.Collection()] = res
}
func (PageResource) Methods(res kit.Resource) []kit.Method {
publish := &methods.Method{
Name: "cms.page.publish",
Blocking: true,
Handler: func(registry kit.Registry, r kit.Request, unblock func()) kit.Response {
user := r.GetUser()
if user == nil || !user.HasRole("admin") {
return kit.NewErrorResponse("permission_denied")
}
id := utils.GetMapStringKey(r.GetData(), "id")
if id == "" {
return kit.NewErrorResponse("no_id_in_data", "Expected 'id' key in data.")
}
rawPage, err := res.Backend().FindOne("pages", id)
if err != nil {
return kit.NewErrorResponse("db_error", err)
} else if rawPage == nil {
return kit.NewErrorResponse("not_found", "The specified page id does not exist.")
}
err = res.ModelInfo().UpdateModelFromData(rawPage, map[string]interface{}{
"published": true,
"published_at": time.Now(),
})
if err != nil {
return kit.NewErrorResponse("db_error", err)
}
return &kit.AppResponse{
Data: map[string]interface{}{"success": true},
}
},
}
return []kit.Method{publish}
}
func (a *App) RegisterResource(res kit.Resource) {
if res.Backend() == nil {
if a.registry.DefaultBackend() == nil {
a.Logger().Panic("Registering resource without backend, but no default backend set.")
}
// Set backend.
res.SetBackend(a.registry.DefaultBackend())
}
if res.Registry() == nil {
res.SetRegistry(a.registry)
}
res.SetDebug(a.Debug())
// Allow a resource to register custom http routes and methods.
if res.Hooks() != nil {
// Handle http routes.
if resRoutes, ok := res.Hooks().(resources.ApiHttpRoutes); ok {
for _, route := range resRoutes.HttpRoutes(res) {
a.RegisterHttpHandler(route.Method(), route.Route(), route.Handler())
}
}
// Handle methods.
if resMethods, ok := res.Hooks().(resources.MethodsHook); ok {
for _, method := range resMethods.Methods(res) {
a.RegisterMethod(method)
}
}
}
a.registry.AddResource(res)
}
func Find(res kit.Resource, request kit.Request) (kit.Response, apperror.Error) {
collection := res.Collection()
info := res.Backend().ModelInfo(collection)
var query *db.Query
jsonQuery := request.GetContext().String("query")
if jsonQuery != "" {
var rawQuery map[string]interface{}
if err := json.Unmarshal([]byte(jsonQuery), &rawQuery); err != nil {
return nil, apperror.Wrap(err, "invalid_query_json")
}
rawQuery["collection"] = collection
// A custom query was supplied.
// Try to parse the query.
var err apperror.Error
query, err = db.ParseQuery(res.Backend(), rawQuery)
if err != nil {
return nil, apperror.Wrap(err, "invalid_query", "", false)
}
}
if query == nil {
query = res.Backend().Q(collection)
}
// Check paging parameters.
var limit, offset int
context := request.GetContext()
if context.Has("limit") {
val, err := context.Int("limit")
if err != nil {
return nil, &apperror.Err{
Public: true,
Code: "non_numeric_limit_parameter",
Message: "The get query contains a non-numeric ?limit",
}
}
limit = val
}
if context.Has("offset") {
val, err := context.Int("offset")
if err != nil {
return nil, &apperror.Err{
Public: true,
Code: "non_numeric_offset_parameter",
Message: "The get query contains a non-numeric ?offset",
}
}
offset = val
}
var page, perPage int
if context.Has("page") {
val, err := context.Int("page")
if err != nil {
return nil, &apperror.Err{
Public: true,
Code: "non_numeric_page_parameter",
Message: "The get query contains a non-numeric ?page",
}
}
page = val
}
if context.Has("per_page") {
val, err := context.Int("per_page")
if err != nil {
return nil, &apperror.Err{
Public: true,
Code: "non_numeric_per_page_parameter",
Message: "The get query contains a non-numeric ?per_page",
}
}
perPage = val
}
if perPage > 0 {
limit = perPage
}
if page > 1 {
offset = (page - 1) * limit
}
if limit > 0 {
query.Limit(int(limit)).Offset(int(offset))
}
// Add joins.
if context.Has("joins") {
parts := strings.Split(context.String("joins"), ",")
for _, name := range parts {
relation := info.FindRelation(name)
if relation == nil {
return nil, &apperror.Err{
Code: "invalid_join",
Message: fmt.Sprintf("Tried to join a NON-existant relationship %v", name),
Public: true,
}
}
query.Join(relation.Name())
}
}
// Add filters.
if context.Has("filters") {
parts := strings.Split(context.String("filters"), ",")
for _, filter := range parts {
filterParts := strings.Split(filter, ":")
if len(filterParts) != 2 {
return nil, &apperror.Err{
Public: true,
Code: "invalid_filter",
Message: fmt.Sprintf("Invalid filter: %v", filter),
}
}
fieldName := filterParts[0]
// COnvert id query to pk field.
if fieldName == "id" {
fieldName = info.PkAttribute().BackendName()
}
var typ reflect.Type
if attr := info.FindAttribute(fieldName); attr != nil {
fieldName = attr.BackendName()
typ = attr.Type()
} else if rel := info.FindRelation(fieldName); rel != nil {
if rel.RelationType() == db.RELATION_TYPE_HAS_ONE {
fieldName = rel.LocalField()
typ = info.Attribute(rel.LocalField()).Type()
} else {
return nil, &apperror.Err{
Public: true,
Code: "cant_filter_on_relation",
Message: fmt.Sprintf("Tried to filter on relationship field %v (only possible for has-one relations)", fieldName),
}
}
} else {
return nil, &apperror.Err{
Public: true,
Code: "filter_for_inexistant_field",
Message: fmt.Sprintf("Tried to filter with inexistant field %v", fieldName),
}
}
converted, err := reflector.R(filterParts[1]).ConvertTo(typ)
if err != nil {
return nil, &apperror.Err{
Public: true,
Code: "inconvertible_filter_value",
Message: fmt.Sprintf("Coult not convert filter value %v for field %v (should be %v)",
filterParts[1], fieldName, typ),
}
}
query.Filter(fieldName, converted)
}
}
return res.ApiFind(query, request), nil
}
