[#80] fixed before hooks data and added optional interceptor to upsert submit

apis/admin.go

@@ -166,7 +166,7 @@ func (api *adminApi) create(c echo.Context) error {
 
 	// load request
 	if err := c.Bind(form); err != nil {
-		return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+		return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 	}
 
 	event := &core.AdminCreateEvent{
@@ -174,20 +174,24 @@ func (api *adminApi) create(c echo.Context) error {
 		Admin:       admin,
 	}
 
-	handlerErr := api.app.OnAdminBeforeCreateRequest().Trigger(event, func(e *core.AdminCreateEvent) error {
 	// create the admin
-		if err := form.Submit(); err != nil {
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			return api.app.OnAdminBeforeCreateRequest().Trigger(event, func(e *core.AdminCreateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("Failed to create admin.", err)
 				}
 
 				return e.HttpContext.JSON(http.StatusOK, e.Admin)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnAdminAfterCreateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }
 
 func (api *adminApi) update(c echo.Context) error {
@@ -205,7 +209,7 @@ func (api *adminApi) update(c echo.Context) error {
 
 	// load request
 	if err := c.Bind(form); err != nil {
-		return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+		return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 	}
 
 	event := &core.AdminUpdateEvent{
@@ -213,20 +217,24 @@ func (api *adminApi) update(c echo.Context) error {
 		Admin:       admin,
 	}
 
-	handlerErr := api.app.OnAdminBeforeUpdateRequest().Trigger(event, func(e *core.AdminUpdateEvent) error {
 	// update the admin
-		if err := form.Submit(); err != nil {
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			return api.app.OnAdminBeforeUpdateRequest().Trigger(event, func(e *core.AdminUpdateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("Failed to update admin.", err)
 				}
 
 				return e.HttpContext.JSON(http.StatusOK, e.Admin)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnAdminAfterUpdateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }
 
 func (api *adminApi) delete(c echo.Context) error {

apis/admin_test.go

@@ -507,9 +507,6 @@ func TestAdminCreate(t *testing.T) {
 			},
 			ExpectedStatus:  400,
 			ExpectedContent: []string{`"data":{"email":{"code":"validation_required","message":"Cannot be blank."},"password":{"code":"validation_required","message":"Cannot be blank."}}`},
-			ExpectedEvents: map[string]int{
-				"OnAdminBeforeCreateRequest": 1,
-			},
 		},
 		{
 			Name:   "authorized as admin + invalid data format",
@@ -532,9 +529,6 @@ func TestAdminCreate(t *testing.T) {
 			},
 			ExpectedStatus:  400,
 			ExpectedContent: []string{`"data":{"avatar":{"code":"validation_max_less_equal_than_required","message":"Must be no greater than 9."},"email":{"code":"validation_admin_email_exists","message":"Admin email already exists."},"password":{"code":"validation_length_out_of_range","message":"The length must be between 10 and 100."},"passwordConfirm":{"code":"validation_values_mismatch","message":"Values don't match."}}`},
-			ExpectedEvents: map[string]int{
-				"OnAdminBeforeCreateRequest": 1,
-			},
 		},
 		{
 			Name:   "authorized as admin + valid data",
@@ -647,9 +641,6 @@ func TestAdminUpdate(t *testing.T) {
 			},
 			ExpectedStatus:  400,
 			ExpectedContent: []string{`"data":{"avatar":{"code":"validation_max_less_equal_than_required","message":"Must be no greater than 9."},"email":{"code":"validation_admin_email_exists","message":"Admin email already exists."},"password":{"code":"validation_length_out_of_range","message":"The length must be between 10 and 100."},"passwordConfirm":{"code":"validation_values_mismatch","message":"Values don't match."}}`},
-			ExpectedEvents: map[string]int{
-				"OnAdminBeforeUpdateRequest": 1,
-			},
 		},
 		{
 			Method: http.MethodPatch,

apis/collection.go

@@ -76,9 +76,9 @@ func (api *collectionApi) create(c echo.Context) error {
 
 	form := forms.NewCollectionUpsert(api.app, collection)
 
-	// read
+	// load request
 	if err := c.Bind(form); err != nil {
-		return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+		return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 	}
 
 	event := &core.CollectionCreateEvent{
@@ -86,20 +86,24 @@ func (api *collectionApi) create(c echo.Context) error {
 		Collection:  collection,
 	}
 
-	handlerErr := api.app.OnCollectionBeforeCreateRequest().Trigger(event, func(e *core.CollectionCreateEvent) error {
+	// create the collection
-		// submit
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
-		if err := form.Submit(); err != nil {
+		return func() error {
+			return api.app.OnCollectionBeforeCreateRequest().Trigger(event, func(e *core.CollectionCreateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("Failed to create the collection.", err)
 				}
 
 				return e.HttpContext.JSON(http.StatusOK, e.Collection)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnCollectionAfterCreateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }
 
 func (api *collectionApi) update(c echo.Context) error {
@@ -110,9 +114,9 @@ func (api *collectionApi) update(c echo.Context) error {
 
 	form := forms.NewCollectionUpsert(api.app, collection)
 
-	// read
+	// load request
 	if err := c.Bind(form); err != nil {
-		return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+		return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 	}
 
 	event := &core.CollectionUpdateEvent{
@@ -120,20 +124,24 @@ func (api *collectionApi) update(c echo.Context) error {
 		Collection:  collection,
 	}
 
-	handlerErr := api.app.OnCollectionBeforeUpdateRequest().Trigger(event, func(e *core.CollectionUpdateEvent) error {
+	// update the collection
-		// submit
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
-		if err := form.Submit(); err != nil {
+		return func() error {
+			return api.app.OnCollectionBeforeUpdateRequest().Trigger(event, func(e *core.CollectionUpdateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("Failed to update the collection.", err)
 				}
 
 				return e.HttpContext.JSON(http.StatusOK, e.Collection)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnCollectionAfterUpdateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }
 
 func (api *collectionApi) delete(c echo.Context) error {

apis/collection_test.go

@@ -297,9 +297,6 @@ func TestCollectionCreate(t *testing.T) {
 				`"name":{"code":"validation_required"`,
 				`"schema":{"code":"validation_required"`,
 			},
-			ExpectedEvents: map[string]int{
-				"OnCollectionBeforeCreateRequest": 1,
-			},
 		},
 		{
 			Name:   "authorized as admin + invalid data (eg. existing name)",
@@ -315,9 +312,6 @@ func TestCollectionCreate(t *testing.T) {
 				`"name":{"code":"validation_collection_name_exists"`,
 				`"schema":{"0":{"name":{"code":"validation_required"`,
 			},
-			ExpectedEvents: map[string]int{
-				"OnCollectionBeforeCreateRequest": 1,
-			},
 		},
 		{
 			Name:   "authorized as admin + valid data",
@@ -399,9 +393,6 @@ func TestCollectionUpdate(t *testing.T) {
 				`"data":{`,
 				`"name":{"code":"validation_collection_name_exists"`,
 			},
-			ExpectedEvents: map[string]int{
-				"OnCollectionBeforeUpdateRequest": 1,
-			},
 		},
 		{
 			Name:   "authorized as admin + valid data",

apis/record.go

@@ -193,7 +193,7 @@ func (api *recordApi) create(c echo.Context) error {
 		testRecord := models.NewRecord(collection)
 		testForm := forms.NewRecordUpsert(api.app, testRecord)
 		if err := testForm.LoadData(c.Request()); err != nil {
-			return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+			return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 		}
 
 		testErr := testForm.DrySubmit(func(txDao *daos.Dao) error {
@@ -210,7 +210,7 @@ func (api *recordApi) create(c echo.Context) error {
 
 	// load request
 	if err := form.LoadData(c.Request()); err != nil {
-		return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+		return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 	}
 
 	event := &core.RecordCreateEvent{
@@ -218,20 +218,24 @@ func (api *recordApi) create(c echo.Context) error {
 		Record:      record,
 	}
 
-	handlerErr := api.app.OnRecordBeforeCreateRequest().Trigger(event, func(e *core.RecordCreateEvent) error {
 	// create the record
-		if err := form.Submit(); err != nil {
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			return api.app.OnRecordBeforeCreateRequest().Trigger(event, func(e *core.RecordCreateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("Failed to create record.", err)
 				}
 
 				return e.HttpContext.JSON(http.StatusOK, e.Record)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnRecordAfterCreateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }
 
 func (api *recordApi) update(c echo.Context) error {
@@ -276,7 +280,7 @@ func (api *recordApi) update(c echo.Context) error {
 
 	// load request
 	if err := form.LoadData(c.Request()); err != nil {
-		return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+		return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 	}
 
 	event := &core.RecordUpdateEvent{
@@ -284,20 +288,24 @@ func (api *recordApi) update(c echo.Context) error {
 		Record:      record,
 	}
 
-	handlerErr := api.app.OnRecordBeforeUpdateRequest().Trigger(event, func(e *core.RecordUpdateEvent) error {
 	// update the record
-		if err := form.Submit(); err != nil {
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			return api.app.OnRecordBeforeUpdateRequest().Trigger(event, func(e *core.RecordUpdateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("Failed to update record.", err)
 				}
 
 				return e.HttpContext.JSON(http.StatusOK, e.Record)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnRecordAfterUpdateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }
 
 func (api *recordApi) delete(c echo.Context) error {

apis/settings.go

@@ -40,6 +40,8 @@ func (api *settingsApi) list(c echo.Context) error {
 
 func (api *settingsApi) set(c echo.Context) error {
 	form := forms.NewSettingsUpsert(api.app)
+
+	// load request
 	if err := c.Bind(form); err != nil {
 		return rest.NewBadRequestError("An error occurred while reading the submitted data.", err)
 	}
@@ -50,8 +52,11 @@ func (api *settingsApi) set(c echo.Context) error {
 		NewSettings: form.Settings,
 	}
 
-	handlerErr := api.app.OnSettingsBeforeUpdateRequest().Trigger(event, func(e *core.SettingsUpdateEvent) error {
+	// update the settings
-		if err := form.Submit(); err != nil {
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			return api.app.OnSettingsBeforeUpdateRequest().Trigger(event, func(e *core.SettingsUpdateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("An error occurred while submitting the form.", err)
 				}
 
@@ -62,10 +67,12 @@ func (api *settingsApi) set(c echo.Context) error {
 
 				return e.HttpContext.JSON(http.StatusOK, redactedSettings)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnSettingsAfterUpdateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }

apis/settings_test.go

@@ -139,9 +139,6 @@ func TestSettingsSet(t *testing.T) {
 				`"emailAuth":{"minPasswordLength":{"code":"validation_min_greater_equal_than_required","message":"Must be no less than 5."}}`,
 				`"meta":{"appName":{"code":"validation_required","message":"Cannot be blank."}}`,
 			},
-			ExpectedEvents: map[string]int{
-				"OnSettingsBeforeUpdateRequest": 1,
-			},
 		},
 		{
 			Name:   "authorized as admin submitting valid data",

apis/user.go

@@ -348,7 +348,7 @@ func (api *userApi) create(c echo.Context) error {
 
 	// load request
 	if err := c.Bind(form); err != nil {
-		return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+		return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 	}
 
 	event := &core.UserCreateEvent{
@@ -356,20 +356,24 @@ func (api *userApi) create(c echo.Context) error {
 		User:        user,
 	}
 
-	handlerErr := api.app.OnUserBeforeCreateRequest().Trigger(event, func(e *core.UserCreateEvent) error {
 	// create the user
-		if err := form.Submit(); err != nil {
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			return api.app.OnUserBeforeCreateRequest().Trigger(event, func(e *core.UserCreateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("Failed to create user.", err)
 				}
 
 				return e.HttpContext.JSON(http.StatusOK, e.User)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnUserAfterCreateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }
 
 func (api *userApi) update(c echo.Context) error {
@@ -387,7 +391,7 @@ func (api *userApi) update(c echo.Context) error {
 
 	// load request
 	if err := c.Bind(form); err != nil {
-		return rest.NewBadRequestError("Failed to read the submitted data due to invalid formatting.", err)
+		return rest.NewBadRequestError("Failed to load the submitted data due to invalid formatting.", err)
 	}
 
 	event := &core.UserUpdateEvent{
@@ -395,20 +399,24 @@ func (api *userApi) update(c echo.Context) error {
 		User:        user,
 	}
 
-	handlerErr := api.app.OnUserBeforeUpdateRequest().Trigger(event, func(e *core.UserUpdateEvent) error {
 	// update the user
-		if err := form.Submit(); err != nil {
+	submitErr := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			return api.app.OnUserBeforeUpdateRequest().Trigger(event, func(e *core.UserUpdateEvent) error {
+				if err := next(); err != nil {
 					return rest.NewBadRequestError("Failed to update user.", err)
 				}
 
 				return e.HttpContext.JSON(http.StatusOK, e.User)
 			})
+		}
+	})
 
-	if handlerErr == nil {
+	if submitErr == nil {
 		api.app.OnUserAfterUpdateRequest().Trigger(event)
 	}
 
-	return handlerErr
+	return submitErr
 }
 
 func (api *userApi) delete(c echo.Context) error {

apis/user_test.go

@@ -748,9 +748,6 @@ func TestUserCreate(t *testing.T) {
 				`"email":{"code":"validation_required"`,
 				`"password":{"code":"validation_required"`,
 			},
-			ExpectedEvents: map[string]int{
-				"OnUserBeforeCreateRequest": 1,
-			},
 		},
 		{
 			Name:           "invalid data",
@@ -764,9 +761,6 @@ func TestUserCreate(t *testing.T) {
 				`"password":{"code":"validation_length_out_of_range"`,
 				`"passwordConfirm":{"code":"validation_values_mismatch"`,
 			},
-			ExpectedEvents: map[string]int{
-				"OnUserBeforeCreateRequest": 1,
-			},
 		},
 		{
 			Name:   "valid data but with disabled email/pass auth",
@@ -868,9 +862,6 @@ func TestUserUpdate(t *testing.T) {
 				`"data":{`,
 				`"email":{"code":"validation_user_email_exists"`,
 			},
-			ExpectedEvents: map[string]int{
-				"OnUserBeforeUpdateRequest": 1,
-			},
 		},
 		{
 			Name:   "authorized as admin - valid data",

forms/admin_upsert.go

@@ -74,8 +74,11 @@ func (form *AdminUpsert) checkUniqueEmail(value any) error {
 	return validation.NewError("validation_admin_email_exists", "Admin email already exists.")
 }
 
-// Submit validates the form and upserts the form's admin model.
+// Submit validates the form and upserts the form admin model.
-func (form *AdminUpsert) Submit() error {
+//
+// You can optionally provide a list of InterceptorFunc to further
+// modify the form behavior before persisting it.
+func (form *AdminUpsert) Submit(interceptors ...InterceptorFunc) error {
 	if err := form.Validate(); err != nil {
 		return err
 	}
@@ -87,5 +90,7 @@ func (form *AdminUpsert) Submit() error {
 		form.admin.SetPassword(form.Password)
 	}
 
+	return runInterceptors(func() error {
 		return form.app.Dao().SaveAdmin(form.admin)
+	}, interceptors...)
 }

forms/admin_upsert_test.go

@@ -2,6 +2,7 @@ package forms_test
 
 import (
 	"encoding/json"
+	"errors"
 	"testing"
 
 	validation "github.com/go-ozzo/ozzo-validation/v4"
@@ -252,7 +253,14 @@ func TestAdminUpsertSubmit(t *testing.T) {
 			continue
 		}
 
-		err := form.Submit()
+		interceptorCalls := 0
+
+		err := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+			return func() error {
+				interceptorCalls++
+				return next()
+			}
+		})
 
 		hasErr := err != nil
 		if hasErr != s.expectError {
@@ -266,6 +274,14 @@ func TestAdminUpsertSubmit(t *testing.T) {
 			continue
 		}
 
+		expectInterceptorCall := 1
+		if s.expectError {
+			expectInterceptorCall = 0
+		}
+		if interceptorCalls != expectInterceptorCall {
+			t.Errorf("(%d) Expected interceptor to be called %d, got %d", i, expectInterceptorCall, interceptorCalls)
+		}
+
 		if s.expectError {
 			continue // skip persistence check
 		}
@@ -283,3 +299,51 @@ func TestAdminUpsertSubmit(t *testing.T) {
 		}
 	}
 }
+
+func TestAdminUpsertSubmitInterceptors(t *testing.T) {
+	app, _ := tests.NewTestApp()
+	defer app.Cleanup()
+
+	admin := &models.Admin{}
+	form := forms.NewAdminUpsert(app, admin)
+	form.Email = "test_new@example.com"
+	form.Password = "1234567890"
+	form.PasswordConfirm = form.Password
+
+	testErr := errors.New("test_error")
+	interceptorAdminEmail := ""
+
+	interceptor1Called := false
+	interceptor1 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptor1Called = true
+			return next()
+		}
+	}
+
+	interceptor2Called := false
+	interceptor2 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptorAdminEmail = admin.Email // to check if the record was filled
+			interceptor2Called = true
+			return testErr
+		}
+	}
+
+	err := form.Submit(interceptor1, interceptor2)
+	if err != testErr {
+		t.Fatalf("Expected error %v, got %v", testErr, err)
+	}
+
+	if !interceptor1Called {
+		t.Fatalf("Expected interceptor1 to be called")
+	}
+
+	if !interceptor2Called {
+		t.Fatalf("Expected interceptor2 to be called")
+	}
+
+	if interceptorAdminEmail != form.Email {
+		t.Fatalf("Expected the form model to be filled before calling the interceptors")
+	}
+}

forms/base.go

@@ -0,0 +1,19 @@
+// Package models implements various services used for request data
+// validation and applying changes to existing DB models through the app Dao.
+package forms
+
+// InterceptorNextFunc is a interceptor handler function.
+// Usually used in combination with InterceptorFunc.
+type InterceptorNextFunc = func() error
+
+// InterceptorFunc defines a single interceptor function that will execute the provided next func handler.
+type InterceptorFunc func(next InterceptorNextFunc) InterceptorNextFunc
+
+// runInterceptors executes the provided list of interceptors.
+func runInterceptors(next InterceptorNextFunc, interceptors ...InterceptorFunc) error {
+	for i := len(interceptors) - 1; i >= 0; i-- {
+		next = interceptors[i](next)
+	}
+
+	return next()
+}

forms/collection_upsert.go

@@ -189,7 +189,10 @@ func (form *CollectionUpsert) checkRule(value any) error {
 // Submit validates the form and upserts the form's Collection model.
 //
 // On success the related record table schema will be auto updated.
-func (form *CollectionUpsert) Submit() error {
+//
+// You can optionally provide a list of InterceptorFunc to further
+// modify the form behavior before persisting it.
+func (form *CollectionUpsert) Submit(interceptors ...InterceptorFunc) error {
 	if err := form.Validate(); err != nil {
 		return err
 	}
@@ -211,5 +214,7 @@ func (form *CollectionUpsert) Submit() error {
 	form.collection.UpdateRule = form.UpdateRule
 	form.collection.DeleteRule = form.DeleteRule
 
+	return runInterceptors(func() error {
 		return form.app.Dao().SaveCollection(form.collection)
+	}, interceptors...)
 }

forms/collection_upsert_test.go

@@ -2,6 +2,7 @@ package forms_test
 
 import (
 	"encoding/json"
+	"errors"
 	"testing"
 
 	validation "github.com/go-ozzo/ozzo-validation/v4"
@@ -387,14 +388,31 @@ func TestCollectionUpsertSubmit(t *testing.T) {
 			continue
 		}
 
+		interceptorCalls := 0
+		interceptor := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+			return func() error {
+				interceptorCalls++
+				return next()
+			}
+		}
+
 		// parse errors
-		result := form.Submit()
+		result := form.Submit(interceptor)
 		errs, ok := result.(validation.Errors)
 		if !ok && result != nil {
 			t.Errorf("(%d) Failed to parse errors %v", i, result)
 			continue
 		}
 
+		// check interceptor calls
+		expectInterceptorCall := 1
+		if len(s.expectedErrors) > 0 {
+			expectInterceptorCall = 0
+		}
+		if interceptorCalls != expectInterceptorCall {
+			t.Errorf("(%d) Expected interceptor to be called %d, got %d", i, expectInterceptorCall, interceptorCalls)
+		}
+
 		// check errors
 		if len(errs) > len(s.expectedErrors) {
 			t.Errorf("(%d) Expected error keys %v, got %v", i, s.expectedErrors, errs)
@@ -450,3 +468,53 @@ func TestCollectionUpsertSubmit(t *testing.T) {
 		}
 	}
 }
+
+func TestCollectionUpsertSubmitInterceptors(t *testing.T) {
+	app, _ := tests.NewTestApp()
+	defer app.Cleanup()
+
+	collection, err := app.Dao().FindCollectionByNameOrId("demo")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	form := forms.NewCollectionUpsert(app, collection)
+	form.Name = "test_new"
+
+	testErr := errors.New("test_error")
+	interceptorCollectionName := ""
+
+	interceptor1Called := false
+	interceptor1 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptor1Called = true
+			return next()
+		}
+	}
+
+	interceptor2Called := false
+	interceptor2 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptorCollectionName = collection.Name // to check if the record was filled
+			interceptor2Called = true
+			return testErr
+		}
+	}
+
+	submitErr := form.Submit(interceptor1, interceptor2)
+	if submitErr != testErr {
+		t.Fatalf("Expected submitError %v, got %v", testErr, submitErr)
+	}
+
+	if !interceptor1Called {
+		t.Fatalf("Expected interceptor1 to be called")
+	}
+
+	if !interceptor2Called {
+		t.Fatalf("Expected interceptor2 to be called")
+	}
+
+	if interceptorCollectionName != form.Name {
+		t.Fatalf("Expected the form model to be filled before calling the interceptors")
+	}
+}

forms/record_upsert.go

@@ -271,7 +271,10 @@ func (form *RecordUpsert) DrySubmit(callback func(txDao *daos.Dao) error) error
 }
 
 // Submit validates the form and upserts the form Record model.
-func (form *RecordUpsert) Submit() error {
+//
+// You can optionally provide a list of InterceptorFunc to further
+// modify the form behavior before persisting it.
+func (form *RecordUpsert) Submit(interceptors ...InterceptorFunc) error {
 	if err := form.Validate(); err != nil {
 		return err
 	}
@@ -281,6 +284,7 @@ func (form *RecordUpsert) Submit() error {
 		return err
 	}
 
+	return runInterceptors(func() error {
 		return form.app.Dao().RunInTransaction(func(txDao *daos.Dao) error {
 			// persist record model
 			if err := txDao.SaveRecord(form.record); err != nil {
@@ -300,6 +304,7 @@ func (form *RecordUpsert) Submit() error {
 
 			return nil
 		})
+	}, interceptors...)
 }
 
 func (form *RecordUpsert) processFilesToUpload() error {

forms/record_upsert_test.go

@@ -3,6 +3,7 @@ package forms_test
 import (
 	"bytes"
 	"encoding/json"
+	"errors"
 	"net/http"
 	"net/http/httptest"
 	"path/filepath"
@@ -400,13 +401,27 @@ func TestRecordUpsertSubmitFailure(t *testing.T) {
 	req.Header.Set(echo.HeaderContentType, mp.FormDataContentType())
 	form.LoadData(req)
 
+	interceptorCalls := 0
+	interceptor := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptorCalls++
+			return next()
+		}
+	}
+
 	// ensure that validate is triggered
 	// ---
-	result := form.Submit()
+	result := form.Submit(interceptor)
 	if result == nil {
 		t.Fatal("Expected error, got nil")
 	}
 
+	// check interceptor calls
+	// ---
+	if interceptorCalls != 0 {
+		t.Fatalf("Expected interceptor to be called 0 times, got %d", interceptorCalls)
+	}
+
 	// ensure that the record changes weren't persisted
 	// ---
 	recordAfter, err := app.Dao().FindFirstRecordByData(collection, "id", recordBefore.Id)
@@ -451,11 +466,25 @@ func TestRecordUpsertSubmitSuccess(t *testing.T) {
 	req.Header.Set(echo.HeaderContentType, mp.FormDataContentType())
 	form.LoadData(req)
 
-	result := form.Submit()
+	interceptorCalls := 0
+	interceptor := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptorCalls++
+			return next()
+		}
+	}
+
+	result := form.Submit(interceptor)
 	if result != nil {
 		t.Fatalf("Expected nil, got error %v", result)
 	}
 
+	// check interceptor calls
+	// ---
+	if interceptorCalls != 1 {
+		t.Fatalf("Expected interceptor to be called 1 time, got %d", interceptorCalls)
+	}
+
 	// ensure that the record changes were persisted
 	// ---
 	recordAfter, err := app.Dao().FindFirstRecordByData(collection, "id", recordBefore.Id)
@@ -482,6 +511,57 @@ func TestRecordUpsertSubmitSuccess(t *testing.T) {
 	}
 }
 
+func TestRecordUpsertSubmitInterceptors(t *testing.T) {
+	app, _ := tests.NewTestApp()
+	defer app.Cleanup()
+
+	collection, _ := app.Dao().FindCollectionByNameOrId("demo4")
+	record, err := app.Dao().FindFirstRecordByData(collection, "id", "054f9f24-0a0a-4e09-87b1-bc7ff2b336a2")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	form := forms.NewRecordUpsert(app, record)
+	form.Data["title"] = "test_new"
+
+	testErr := errors.New("test_error")
+	interceptorRecordTitle := ""
+
+	interceptor1Called := false
+	interceptor1 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptor1Called = true
+			return next()
+		}
+	}
+
+	interceptor2Called := false
+	interceptor2 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptorRecordTitle = record.GetStringDataValue("title") // to check if the record was filled
+			interceptor2Called = true
+			return testErr
+		}
+	}
+
+	submitErr := form.Submit(interceptor1, interceptor2)
+	if submitErr != testErr {
+		t.Fatalf("Expected submitError %v, got %v", testErr, submitErr)
+	}
+
+	if !interceptor1Called {
+		t.Fatalf("Expected interceptor1 to be called")
+	}
+
+	if !interceptor2Called {
+		t.Fatalf("Expected interceptor2 to be called")
+	}
+
+	if interceptorRecordTitle != form.Data["title"].(string) {
+		t.Fatalf("Expected the form model to be filled before calling the interceptors")
+	}
+}
+
 func hasRecordFile(app core.App, record *models.Record, filename string) bool {
 	fs, _ := app.NewFilesystem()
 	defer fs.Close()

forms/settings_upsert.go

@@ -33,13 +33,17 @@ func (form *SettingsUpsert) Validate() error {
 // Submit validates the form and upserts the loaded settings.
 //
 // On success the app settings will be refreshed with the form ones.
-func (form *SettingsUpsert) Submit() error {
+//
+// You can optionally provide a list of InterceptorFunc to further
+// modify the form behavior before persisting it.
+func (form *SettingsUpsert) Submit(interceptors ...InterceptorFunc) error {
 	if err := form.Validate(); err != nil {
 		return err
 	}
 
 	encryptionKey := os.Getenv(form.app.EncryptionEnv())
 
+	return runInterceptors(func() error {
 		saveErr := form.app.Dao().SaveParam(
 			models.ParamAppSettings,
 			form.Settings,
@@ -56,4 +60,5 @@ func (form *SettingsUpsert) Submit() error {
 
 		// merge the application settings with the form ones
 		return form.app.Settings().Merge(form.Settings)
+	}, interceptors...)
 }

forms/settings_upsert_test.go

@@ -2,6 +2,7 @@ package forms_test
 
 import (
 	"encoding/json"
+	"errors"
 	"os"
 	"testing"
 
@@ -98,14 +99,31 @@ func TestSettingsUpsertSubmit(t *testing.T) {
 			continue
 		}
 
+		interceptorCalls := 0
+		interceptor := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+			return func() error {
+				interceptorCalls++
+				return next()
+			}
+		}
+
 		// parse errors
-		result := form.Submit()
+		result := form.Submit(interceptor)
 		errs, ok := result.(validation.Errors)
 		if !ok && result != nil {
 			t.Errorf("(%d) Failed to parse errors %v", i, result)
 			continue
 		}
 
+		// check interceptor calls
+		expectInterceptorCall := 1
+		if len(s.expectedErrors) > 0 {
+			expectInterceptorCall = 0
+		}
+		if interceptorCalls != expectInterceptorCall {
+			t.Errorf("(%d) Expected interceptor to be called %d, got %d", i, expectInterceptorCall, interceptorCalls)
+		}
+
 		// check errors
 		if len(errs) > len(s.expectedErrors) {
 			t.Errorf("(%d) Expected error keys %v, got %v", i, s.expectedErrors, errs)
@@ -128,3 +146,42 @@ func TestSettingsUpsertSubmit(t *testing.T) {
 		}
 	}
 }
+
+func TestSettingsUpsertSubmitInterceptors(t *testing.T) {
+	app, _ := tests.NewTestApp()
+	defer app.Cleanup()
+
+	form := forms.NewSettingsUpsert(app)
+	form.Meta.AppName = "test_new"
+
+	testErr := errors.New("test_error")
+
+	interceptor1Called := false
+	interceptor1 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptor1Called = true
+			return next()
+		}
+	}
+
+	interceptor2Called := false
+	interceptor2 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptor2Called = true
+			return testErr
+		}
+	}
+
+	submitErr := form.Submit(interceptor1, interceptor2)
+	if submitErr != testErr {
+		t.Fatalf("Expected submitError %v, got %v", testErr, submitErr)
+	}
+
+	if !interceptor1Called {
+		t.Fatalf("Expected interceptor1 to be called")
+	}
+
+	if !interceptor2Called {
+		t.Fatalf("Expected interceptor2 to be called")
+	}
+}

forms/user_upsert.go

@@ -98,7 +98,10 @@ func (form *UserUpsert) checkEmailDomain(value any) error {
 }
 
 // Submit validates the form and upserts the form user model.
-func (form *UserUpsert) Submit() error {
+//
+// You can optionally provide a list of InterceptorFunc to further
+// modify the form behavior before persisting it.
+func (form *UserUpsert) Submit(interceptors ...InterceptorFunc) error {
 	if err := form.Validate(); err != nil {
 		return err
 	}
@@ -114,5 +117,7 @@ func (form *UserUpsert) Submit() error {
 
 	form.user.Email = form.Email
 
+	return runInterceptors(func() error {
 		return form.app.Dao().SaveUser(form.user)
+	}, interceptors...)
 }

forms/user_upsert_test.go

@@ -2,6 +2,7 @@ package forms_test
 
 import (
 	"encoding/json"
+	"errors"
 	"testing"
 
 	validation "github.com/go-ozzo/ozzo-validation/v4"
@@ -212,13 +213,28 @@ func TestUserUpsertSubmit(t *testing.T) {
 			continue
 		}
 
-		err := form.Submit()
+		interceptorCalls := 0
+
+		err := form.Submit(func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+			return func() error {
+				interceptorCalls++
+				return next()
+			}
+		})
 
 		hasErr := err != nil
 		if hasErr != s.expectError {
 			t.Errorf("(%d) Expected hasErr to be %v, got %v (%v)", i, s.expectError, hasErr, err)
 		}
 
+		expectInterceptorCall := 1
+		if s.expectError {
+			expectInterceptorCall = 0
+		}
+		if interceptorCalls != expectInterceptorCall {
+			t.Errorf("(%d) Expected interceptor to be called %d, got %d", i, expectInterceptorCall, interceptorCalls)
+		}
+
 		if s.expectError {
 			continue
 		}
@@ -240,3 +256,51 @@ func TestUserUpsertSubmit(t *testing.T) {
 		}
 	}
 }
+
+func TestUserUpsertSubmitInterceptors(t *testing.T) {
+	app, _ := tests.NewTestApp()
+	defer app.Cleanup()
+
+	user := &models.User{}
+	form := forms.NewUserUpsert(app, user)
+	form.Email = "test_new@example.com"
+	form.Password = "1234567890"
+	form.PasswordConfirm = form.Password
+
+	testErr := errors.New("test_error")
+	interceptorUserEmail := ""
+
+	interceptor1Called := false
+	interceptor1 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptor1Called = true
+			return next()
+		}
+	}
+
+	interceptor2Called := false
+	interceptor2 := func(next forms.InterceptorNextFunc) forms.InterceptorNextFunc {
+		return func() error {
+			interceptorUserEmail = user.Email // to check if the record was filled
+			interceptor2Called = true
+			return testErr
+		}
+	}
+
+	err := form.Submit(interceptor1, interceptor2)
+	if err != testErr {
+		t.Fatalf("Expected error %v, got %v", testErr, err)
+	}
+
+	if !interceptor1Called {
+		t.Fatalf("Expected interceptor1 to be called")
+	}
+
+	if !interceptor2Called {
+		t.Fatalf("Expected interceptor2 to be called")
+	}
+
+	if interceptorUserEmail != form.Email {
+		t.Fatalf("Expected the form model to be filled before calling the interceptors")
+	}
+}