Merge branch 'devel' into 'master'

fix default sort order

See merge request wolf/mango!5

paging/paging.go

@@ -20,7 +20,7 @@ const (
 type StdPaging struct {
 	Limit  *int64  `mgo-paging:"limit,default: 10"`
 	Offset *int64  `mgo-paging:"offset"`
-	Sort   *string `mgo-paging:"sort,default: _id_"`
+	Sort   *string `mgo-paging:"sort,default: _id"`
 }
 
 // cacheLimit contains cached info for a limit paging data
@@ -124,17 +124,19 @@ func RegisterStruct(s interface{}) error {
 // field and default value when applicable
 // Eg:
 // ```
-// type SimplemPagingStruct struct {
-// 	Limit  *int64  `mgo-paging:"limit,default: 10"`
-// 	Offset *int64  `mgo-paging:"offset"`
-// 	Sort   *string `mgo-paging:"sort,default: _id_"`
-// }
+//
+//	type SimplemPagingStruct struct {
+//		Limit  *int64  `mgo-paging:"limit,default: 10"`
+//		Offset *int64  `mgo-paging:"offset"`
+//		Sort   *string `mgo-paging:"sort,default: _id"`
+//	}
+//
 // ```
 // The `default` opt is the default value, used when the field is a nil pointer.
 // The `limit`, `offset` and `sort` value define what the field is used for.
 // The sort field value should contain the key used for sorting. You can add a
 // `-` as prefix to revert the sorting order.
-// Eg: `-_id_`, `_id_`, `myField`, `-myField`
+// Eg: `-_id`, `_id`, `myField`, `-myField`
 func GeneratePagination(s interface{}) (res options.FindOptions, err error) {
 
 	// register paging struct. Will skip if already registered