func (r *Request) setParamValue(args *setParamValueArgs) error {
// We parse the tag to get the options
opts := NewParamOptions(args.tags)
defaultValue := args.tags.Get("default")
// The tag needs to be ignored
if opts.Ignore {
return nil
}
if opts.Name == "" {
opts.Name = args.paramInfo.Name
}
// We get the value and apply the transformations
value := args.source.Get(opts.Name)
if opts.Trim {
value = strings.TrimSpace(value)
}
if value == "" {
value = defaultValue
if opts.Required {
return apierror.NewBadRequest("parameter [%s] missing", opts.Name)
}
}
// We now set the value in the struct
if value != "" {
var errorMsg = fmt.Sprintf("value [%s] for parameter [%s] is invalid", value, opts.Name)
switch args.param.Kind() {
case reflect.Bool:
v, err := strconv.ParseBool(value)
if err != nil {
return apierror.NewBadRequest(errorMsg)
}
args.param.SetBool(v)
case reflect.String:
args.param.SetString(value)
case reflect.Int:
v, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return apierror.NewBadRequest(errorMsg)
}
args.param.SetInt(v)
}
}
return nil
}
func (a *Article) Create() error {
if a == nil {
return apierror.NewServerError("article not instanced")
}
if a.Slug == "" {
a.Slug = slug.Make(a.Title)
}
if bson.IsObjectIdHex(a.Slug) {
return apierror.NewBadRequest("slug cannot be a ObjectId")
}
a.CreatedAt = time.Now()
// To prevent duplicates on the slug, we'll retry the insert() up to 10 times
originalSlug := a.Slug
var err error
for i := 0; i < 10; i++ {
a.ID = bson.NewObjectId()
err = Query().Insert(a)
if err != nil {
// In case of duplicate we'll add "-X" at the end of the slug, where X is
// a number
a.Slug = fmt.Sprintf("%s-%d", originalSlug, i)
if mgo.IsDup(err) == false {
return apierror.NewServerError(err.Error())
}
} else {
// everything went well
return nil
}
}
// after 10 try we just return an error
return apierror.NewConflict(err.Error())
}