Refactor callbacks

callback.go

@@ -23,7 +23,7 @@ type Callback struct {
 	processors []*CallbackProcessor
 }
 
-// callbackProcessor contains all informations for a callback
+// CallbackProcessor contains all informations for a callback
 type CallbackProcessor struct {
 	name      string              // current callback's name
 	before    string              // register current callback before a callback
@@ -79,7 +79,7 @@ func (c *Callback) Query() *CallbackProcessor {
 	return c.addProcessor("query")
 }
 
-// Query could be used to register callbacks for querying objects with `Row`, `Rows`, refer `Create` for usage
+// RowQuery could be used to register callbacks for querying objects with `Row`, `Rows`, refer `Create` for usage
 func (c *Callback) RowQuery() *CallbackProcessor {
 	return c.addProcessor("row_query")
 }
@@ -125,6 +125,17 @@ func (cp *CallbackProcessor) Replace(callbackName string, callback func(scope *S
 	cp.parent.reorder()
 }
 
+// Get registered callback
+//    db.Callback().Create().Get("gorm:create")
+func (cp *CallbackProcessor) Get(callbackName string) (callback func(scope *Scope)) {
+	for _, processor := range cp.parent.processors {
+		if processor.name == callbackName && processor.kind == cp.kind && !cp.remove {
+			return *cp.processor
+		}
+	}
+	return nil
+}
+
 // getRIndex get right index from string slice
 func getRIndex(strs []string, str string) int {
 	for i := len(strs) - 1; i >= 0; i-- {

callback_create.go

@@ -5,12 +5,12 @@ import (
 	"strings"
 )
 
-func BeforeCreate(scope *Scope) {
+func beforeCreateCallback(scope *Scope) {
 	scope.CallMethodWithErrorCheck("BeforeSave")
 	scope.CallMethodWithErrorCheck("BeforeCreate")
 }
 
-func UpdateTimeStampWhenCreate(scope *Scope) {
+func updateTimeStampForCreateCallback(scope *Scope) {
 	if !scope.HasError() {
 		now := NowFunc()
 		scope.SetColumn("CreatedAt", now)
@@ -18,7 +18,7 @@ func UpdateTimeStampWhenCreate(scope *Scope) {
 	}
 }
 
-func Create(scope *Scope) {
+func createCallback(scope *Scope) {
 	defer scope.trace(NowFunc())
 
 	if !scope.HasError() {
@@ -102,25 +102,25 @@ func Create(scope *Scope) {
 	}
 }
 
-func ForceReloadAfterCreate(scope *Scope) {
+func forceReloadAfterCreateCallback(scope *Scope) {
 	if columns, ok := scope.InstanceGet("gorm:force_reload_after_create_attrs"); ok {
 		scope.DB().New().Select(columns.([]string)).First(scope.Value)
 	}
 }
 
-func AfterCreate(scope *Scope) {
+func afterCreateCallback(scope *Scope) {
 	scope.CallMethodWithErrorCheck("AfterCreate")
 	scope.CallMethodWithErrorCheck("AfterSave")
 }
 
 func init() {
-	defaultCallback.Create().Register("gorm:begin_transaction", BeginTransaction)
+	defaultCallback.Create().Register("gorm:begin_transaction", beginTransactionCallback)
-	defaultCallback.Create().Register("gorm:before_create", BeforeCreate)
+	defaultCallback.Create().Register("gorm:before_create", beforeCreateCallback)
-	defaultCallback.Create().Register("gorm:save_before_associations", SaveBeforeAssociations)
+	defaultCallback.Create().Register("gorm:save_before_associations", saveBeforeAssociationsCallback)
-	defaultCallback.Create().Register("gorm:update_time_stamp_when_create", UpdateTimeStampWhenCreate)
+	defaultCallback.Create().Register("gorm:update_time_stamp_when_create", updateTimeStampForCreateCallback)
-	defaultCallback.Create().Register("gorm:create", Create)
+	defaultCallback.Create().Register("gorm:create", createCallback)
-	defaultCallback.Create().Register("gorm:force_reload_after_create", ForceReloadAfterCreate)
+	defaultCallback.Create().Register("gorm:force_reload_after_create", forceReloadAfterCreateCallback)
-	defaultCallback.Create().Register("gorm:save_after_associations", SaveAfterAssociations)
+	defaultCallback.Create().Register("gorm:save_after_associations", saveAfterAssociationsCallback)
-	defaultCallback.Create().Register("gorm:after_create", AfterCreate)
+	defaultCallback.Create().Register("gorm:after_create", afterCreateCallback)
-	defaultCallback.Create().Register("gorm:commit_or_rollback_transaction", CommitOrRollbackTransaction)
+	defaultCallback.Create().Register("gorm:commit_or_rollback_transaction", commitOrRollbackTransactionCallback)
 }

callback_delete.go

@@ -2,11 +2,11 @@ package gorm
 
 import "fmt"
 
-func BeforeDelete(scope *Scope) {
+func beforeDeleteCallback(scope *Scope) {
 	scope.CallMethodWithErrorCheck("BeforeDelete")
 }
 
-func Delete(scope *Scope) {
+func deleteCallback(scope *Scope) {
 	if !scope.HasError() {
 		if !scope.Search.Unscoped && scope.HasColumn("DeletedAt") {
 			scope.Raw(
@@ -23,14 +23,14 @@ func Delete(scope *Scope) {
 	}
 }
 
-func AfterDelete(scope *Scope) {
+func afterDeleteCallback(scope *Scope) {
 	scope.CallMethodWithErrorCheck("AfterDelete")
 }
 
 func init() {
-	defaultCallback.Delete().Register("gorm:begin_transaction", BeginTransaction)
+	defaultCallback.Delete().Register("gorm:begin_transaction", beginTransactionCallback)
-	defaultCallback.Delete().Register("gorm:before_delete", BeforeDelete)
+	defaultCallback.Delete().Register("gorm:before_delete", beforeDeleteCallback)
-	defaultCallback.Delete().Register("gorm:delete", Delete)
+	defaultCallback.Delete().Register("gorm:delete", deleteCallback)
-	defaultCallback.Delete().Register("gorm:after_delete", AfterDelete)
+	defaultCallback.Delete().Register("gorm:after_delete", afterDeleteCallback)
-	defaultCallback.Delete().Register("gorm:commit_or_rollback_transaction", CommitOrRollbackTransaction)
+	defaultCallback.Delete().Register("gorm:commit_or_rollback_transaction", commitOrRollbackTransactionCallback)
 }

callback_query.go

@@ -6,7 +6,7 @@ import (
 	"reflect"
 )
 
-func Query(scope *Scope) {
+func queryCallback(scope *Scope) {
 	defer scope.trace(NowFunc())
 
 	var (
@@ -78,12 +78,12 @@ func Query(scope *Scope) {
 	}
 }
 
-func AfterQuery(scope *Scope) {
+func afterQueryCallback(scope *Scope) {
 	scope.CallMethodWithErrorCheck("AfterFind")
 }
 
 func init() {
-	defaultCallback.Query().Register("gorm:query", Query)
+	defaultCallback.Query().Register("gorm:query", queryCallback)
-	defaultCallback.Query().Register("gorm:after_query", AfterQuery)
+	defaultCallback.Query().Register("gorm:after_query", afterQueryCallback)
-	defaultCallback.Query().Register("gorm:preload", Preload)
+	defaultCallback.Query().Register("gorm:preload", preloadCallback)
 }

callback_query_preload.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 )
 
-func Preload(scope *Scope) {
+func preloadCallback(scope *Scope) {
 	if scope.Search.preload == nil || scope.HasError() {
 		return
 	}

callback_shared.go

@@ -2,15 +2,15 @@ package gorm
 
 import "reflect"
 
-func BeginTransaction(scope *Scope) {
+func beginTransactionCallback(scope *Scope) {
 	scope.Begin()
 }
 
-func CommitOrRollbackTransaction(scope *Scope) {
+func commitOrRollbackTransactionCallback(scope *Scope) {
 	scope.CommitOrRollback()
 }
 
-func SaveBeforeAssociations(scope *Scope) {
+func saveBeforeAssociationsCallback(scope *Scope) {
 	if !scope.shouldSaveAssociations() {
 		return
 	}
@@ -32,7 +32,7 @@ func SaveBeforeAssociations(scope *Scope) {
 	}
 }
 
-func SaveAfterAssociations(scope *Scope) {
+func saveAfterAssociationsCallback(scope *Scope) {
 	if !scope.shouldSaveAssociations() {
 		return
 	}

callback_update.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 )
 
-func AssignUpdateAttributes(scope *Scope) {
+func assignUpdateAttributesCallback(scope *Scope) {
 	if attrs, ok := scope.InstanceGet("gorm:update_interface"); ok {
 		if maps := convertInterfaceToMap(attrs); len(maps) > 0 {
 			protected, ok := scope.Get("gorm:ignore_protected_attrs")
@@ -24,20 +24,20 @@ func AssignUpdateAttributes(scope *Scope) {
 	}
 }
 
-func BeforeUpdate(scope *Scope) {
+func beforeUpdateCallback(scope *Scope) {
 	if _, ok := scope.Get("gorm:update_column"); !ok {
 		scope.CallMethodWithErrorCheck("BeforeSave")
 		scope.CallMethodWithErrorCheck("BeforeUpdate")
 	}
 }
 
-func UpdateTimeStampWhenUpdate(scope *Scope) {
+func updateTimeStampForUpdateCallback(scope *Scope) {
 	if _, ok := scope.Get("gorm:update_column"); !ok {
 		scope.SetColumn("UpdatedAt", NowFunc())
 	}
 }
 
-func Update(scope *Scope) {
+func updateCallback(scope *Scope) {
 	if !scope.HasError() {
 		var sqls []string
 
@@ -75,7 +75,7 @@ func Update(scope *Scope) {
 	}
 }
 
-func AfterUpdate(scope *Scope) {
+func afterUpdateCallback(scope *Scope) {
 	if _, ok := scope.Get("gorm:update_column"); !ok {
 		scope.CallMethodWithErrorCheck("AfterUpdate")
 		scope.CallMethodWithErrorCheck("AfterSave")
@@ -83,13 +83,13 @@ func AfterUpdate(scope *Scope) {
 }
 
 func init() {
-	defaultCallback.Update().Register("gorm:assign_update_attributes", AssignUpdateAttributes)
+	defaultCallback.Update().Register("gorm:assign_update_attributes", assignUpdateAttributesCallback)
-	defaultCallback.Update().Register("gorm:begin_transaction", BeginTransaction)
+	defaultCallback.Update().Register("gorm:begin_transaction", beginTransactionCallback)
-	defaultCallback.Update().Register("gorm:before_update", BeforeUpdate)
+	defaultCallback.Update().Register("gorm:before_update", beforeUpdateCallback)
-	defaultCallback.Update().Register("gorm:save_before_associations", SaveBeforeAssociations)
+	defaultCallback.Update().Register("gorm:save_before_associations", saveBeforeAssociationsCallback)
-	defaultCallback.Update().Register("gorm:update_time_stamp_when_update", UpdateTimeStampWhenUpdate)
+	defaultCallback.Update().Register("gorm:update_time_stamp_when_update", updateTimeStampForUpdateCallback)
-	defaultCallback.Update().Register("gorm:update", Update)
+	defaultCallback.Update().Register("gorm:update", updateCallback)
-	defaultCallback.Update().Register("gorm:save_after_associations", SaveAfterAssociations)
+	defaultCallback.Update().Register("gorm:save_after_associations", saveAfterAssociationsCallback)
-	defaultCallback.Update().Register("gorm:after_update", AfterUpdate)
+	defaultCallback.Update().Register("gorm:after_update", afterUpdateCallback)
-	defaultCallback.Update().Register("gorm:commit_or_rollback_transaction", CommitOrRollbackTransaction)
+	defaultCallback.Update().Register("gorm:commit_or_rollback_transaction", commitOrRollbackTransactionCallback)
 }