added full multilanguage support (on backend and web)

blueprint/auth/interfaces/direct.go

@@ -54,29 +54,29 @@ func (ap *DirectAuthProvider) Signin(c *gin.Context) {
 	directAPISigninByField := core.CurrentConfig.D.Uadmin.DirectAPISigninByField
 	db.Db.Model(core.User{}).Where(fmt.Sprintf("%s = ?", directAPISigninByField), json.SigninField).First(&user)
 	if user.ID == 0 {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("login credentials are incorrect"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("login_credentials_incorrect", "login credentials are incorrect"))
 		return
 	}
 	if !user.Active {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("this user is inactive"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("user_inactive", "this user is inactive"))
 		return
 	}
 	if !user.IsPasswordUsable {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("this user doesn't have a password"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("password_is_not_configured", "this user doesn't have a password"))
 		return
 	}
 	err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(json.Password+user.Salt))
 	if err != nil {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("login credentials are incorrect"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("login_credentials_incorrect", "login credentials are incorrect"))
 		return
 	}
 	if user.GeneratedOTPToVerify != "" {
 		if json.OTP == "" {
-			c.JSON(http.StatusBadRequest, core.APIBadResponse("otp is required"))
+			c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("otp_required", "otp is required"))
 			return
 		}
 		if user.GeneratedOTPToVerify != json.OTP {
-			c.JSON(http.StatusBadRequest, core.APIBadResponse("otp provided by user is wrong"))
+			c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("otp_is_wrong", "otp provided by user is wrong"))
 			return
 		}
 		user.GeneratedOTPToVerify = ""
@@ -214,7 +214,7 @@ func (ap *DirectAuthProvider) IsAuthenticated(c *gin.Context) {
 		return
 	}
 	if sessionAdapter.IsExpired() {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("session expired"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("session_expired", "session expired"))
 		return
 	}
 	c.JSON(http.StatusOK, GetUserForAPI(sessionAdapter.GetUser()))

blueprint/auth/interfaces/direct_for_admin.go

@@ -52,24 +52,24 @@ func (ap *DirectAuthForAdminProvider) Signin(c *gin.Context) {
 	var user = core.GenerateUserModel()
 	db.Model(core.User{}).Where(&core.User{Username: json.SigninField}).First(user)
 	if user.GetID() == 0 {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("login credentials are incorrect."))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("login_credentials_incorrect", "login credentials are incorrect."))
 		return
 	}
 	if !user.GetActive() {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("this user is inactive"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("user_inactive", "this user is inactive"))
 		return
 	}
 	if !user.GetIsSuperUser() && !user.GetIsStaff() {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("this user doesn't have an access to admin panel"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("user_has_no_access_to_admin_panel", "this user doesn't have an access to admin panel"))
 		return
 	}
 	if !user.GetIsPasswordUsable() {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("this user doesn't have a password"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("password_is_not_configured", "this user doesn't have a password"))
 		return
 	}
 	err := bcrypt.CompareHashAndPassword([]byte(user.GetPassword()), []byte(json.Password+user.GetSalt()))
 	if err != nil {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("login credentials are incorrect."))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("login_credentials_incorrect", "login credentials are incorrect."))
 		return
 	}
 	sessionAdapterRegistry := sessionsblueprint.ConcreteBlueprint.SessionAdapterRegistry
@@ -206,7 +206,7 @@ func (ap *DirectAuthForAdminProvider) IsAuthenticated(c *gin.Context) {
 		return
 	}
 	if sessionAdapter.IsExpired() {
-		c.JSON(http.StatusBadRequest, core.APIBadResponse("session expired"))
+		c.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("session_expired", "session expired"))
 		return
 	}
 	c.JSON(http.StatusOK, getUserForUadminPanel(sessionAdapter.GetUser()))

blueprint/language/language.go

@@ -1,7 +1,6 @@
 package language
 
 import (
-	"errors"
 	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/sergeyglazyrindev/uadmin/blueprint/language/migrations"
@@ -47,7 +46,7 @@ func (b Blueprint) InitRouter(app core.IApp, group *gin.RouterGroup) {
 				lang := &core.Language{}
 				uadminDatabase.Db.Where(&core.Language{Default: true}).First(lang)
 				if lang.ID != 0 && ID != strconv.Itoa(int(lang.ID)) {
-					return errors.New("only one default language could be configured")
+					return core.NewHTTPErrorResponse("only_one_default_language_allowed", "only one default language could be configured")
 				}
 				return nil
 			})

blueprint/sessions/interfaces/db.go

@@ -1,7 +1,6 @@
 package interfaces
 
 import (
-	"fmt"
 	"github.com/sergeyglazyrindev/uadmin/core"
 	"time"
 )
@@ -59,7 +58,7 @@ func (s *DbSession) GetByKey(sessionKey string) (ISessionProvider, error) {
 	var session core.Session
 	db.Db.Model(&core.Session{}).Where(&core.Session{Key: sessionKey}).Preload("User").First(&session)
 	if session.ID == 0 {
-		return nil, fmt.Errorf("no session with key %s found", sessionKey)
+		return nil, core.NewHTTPErrorResponse("session_not_found", "no session with key %s found", sessionKey)
 	}
 	return &DbSession{
 		session: &session,

blueprint/sessions/sessions.go

@@ -26,7 +26,7 @@ func (b Blueprint) InitRouter(app core.IApp, group *gin.RouterGroup) {
 				return
 			}
 			contentType := c.Request.Header.Get("Content-Type")
-			if contentType == "application/json" {
+			if strings.Contains(contentType, "application/json") {
 				c.Next()
 				return
 			}
@@ -84,7 +84,7 @@ func (b Blueprint) InitRouter(app core.IApp, group *gin.RouterGroup) {
 				return
 			}
 			contentType := c.Request.Header.Get("Content-Type")
-			if contentType == "application/json" {
+			if strings.Contains(contentType, "application/json") {
 				c.Next()
 				return
 			}

blueprint/user/user.go

@@ -71,7 +71,7 @@ func (b Blueprint) InitRouter(app core.IApp, group *gin.RouterGroup) {
 		user := core.GenerateUserModel()
 		db.Model(core.GenerateUserModel()).Where(&core.User{Email: json.Email}).First(user)
 		if user.GetID() == 0 {
-			ctx.JSON(http.StatusBadRequest, core.APIBadResponse("User with this email not found"))
+			ctx.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("user_not_found", "User with this email not found"))
 			return
 		}
 		templateWriter := bytes.NewBuffer([]byte{})
@@ -135,11 +135,11 @@ func (b Blueprint) InitRouter(app core.IApp, group *gin.RouterGroup) {
 		var oneTimeAction core.OneTimeAction
 		db.Model(core.OneTimeAction{}).Where(&core.OneTimeAction{Code: json.Code, IsUsed: false}).Preload("User").First(&oneTimeAction)
 		if oneTimeAction.ID == 0 {
-			ctx.JSON(http.StatusBadRequest, core.APIBadResponse("No such code found"))
+			ctx.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("code_not_found", "No such code found"))
 			return
 		}
 		if oneTimeAction.ExpiresOn.Before(time.Now()) {
-			ctx.JSON(http.StatusBadRequest, core.APIBadResponse("Code is expired"))
+			ctx.JSON(http.StatusBadRequest, core.APIBadResponseWithCode("code_expired", "Code is expired"))
 			return
 		}
 		passwordValidationStruct := &PasswordValidationStruct{
@@ -369,14 +369,14 @@ func (b Blueprint) InitRouter(app core.IApp, group *gin.RouterGroup) {
 					return ret
 				}
 				userGroupsWidget.LeftSelectTitle = "Available groups"
-				userGroupsWidget.LeftSelectHelp = "This is the list of available groups. You may choose some by selecting them in the box below and then clicking the \"Choose\" arrow between the two boxes."
-				userGroupsWidget.LeftSearchSelectHelp = "Type into this box to filter down the list of available groups."
+				userGroupsWidget.LeftSelectHelp = "available_groups_left"
+				userGroupsWidget.LeftSearchSelectHelp = "available_groups_search_help"
 				userGroupsWidget.LeftHelpChooseAll = "Click to choose all groups at once."
 				userGroupsWidget.RightSelectTitle = "Chosen groups"
-				userGroupsWidget.RightSelectHelp = "This is the list of chosen groups. You may remove some by selecting them in the box below and then clicking the \"Remove\" arrow between the two boxes."
+				userGroupsWidget.RightSelectHelp = "chosen_groups_left"
 				userGroupsWidget.RightSearchSelectHelp = ""
 				userGroupsWidget.RightHelpChooseAll = "Click to remove all chosen groups at once."
-				userGroupsWidget.HelpText = "The groups this user belongs to. A user will get all permissions granted to each of their groups. Hold down \"Control\", or \"Command\" on a Mac, to select more than one."
+				userGroupsWidget.HelpText = "group_widget_help"
 				permissionsField, _ := form.FieldRegistry.GetByName("Permissions")
 				permissionsField.SetUpField = func(w core.IWidget, modelI interface{}, v interface{}, afo core.IAdminFilterObjects) error {
 					model := modelI.(*core.User)
@@ -414,14 +414,14 @@ func (b Blueprint) InitRouter(app core.IApp, group *gin.RouterGroup) {
 					return ret
 				}
 				permissionsWidget.LeftSelectTitle = "Available user permissions"
-				permissionsWidget.LeftSelectHelp = "This is the list of available user permissions. You may choose some by selecting them in the box below and then clicking the \"Choose\" arrow between the two boxes."
-				permissionsWidget.LeftSearchSelectHelp = "Type into this box to filter down the list of available user permissions."
+				permissionsWidget.LeftSelectHelp = "available_permissions_left"
+				permissionsWidget.LeftSearchSelectHelp = "available_permissions_search_help"
 				permissionsWidget.LeftHelpChooseAll = "Click to choose all user permissions at once."
 				permissionsWidget.RightSelectTitle = "Chosen user permissions"
-				permissionsWidget.RightSelectHelp = "This is the list of chosen user permissions. You may remove some by selecting them in the box below and then clicking the \"Remove\" arrow between the two boxes."
+				permissionsWidget.RightSelectHelp = "chosen_permissions_left"
 				permissionsWidget.RightSearchSelectHelp = ""
 				permissionsWidget.RightHelpChooseAll = "Click to remove all chosen user permissions at once."
-				permissionsWidget.HelpText = "Specific permissions for this user. Hold down \"Control\", or \"Command\" on a Mac, to select more than one."
+				permissionsWidget.HelpText = "permission_widget_help"
 				permissionsWidget.PopulateRightSide = func() []*core.SelectOptGroup {
 					ret := make([]*core.SelectOptGroup, 0)
 					user := modelI.(*core.User)
@@ -545,14 +545,14 @@ func (b Blueprint) InitRouter(app core.IApp, group *gin.RouterGroup) {
 					return ret
 				}
 				permissionsWidget.LeftSelectTitle = "Available permissions"
-				permissionsWidget.LeftSelectHelp = "This is the list of available permissions. You may choose some by selecting them in the box below and then clicking the \"Choose\" arrow between the two boxes."
-				permissionsWidget.LeftSearchSelectHelp = "Type into this box to filter down the list of available user permissions."
+				permissionsWidget.LeftSelectHelp = "available_permissions_left"
+				permissionsWidget.LeftSearchSelectHelp = "available_permissions_search_help"
 				permissionsWidget.LeftHelpChooseAll = "Click to choose all user permissions at once."
 				permissionsWidget.RightSelectTitle = "Chosen permissions"
-				permissionsWidget.RightSelectHelp = "This is the list of chosen permissions. You may remove some by selecting them in the box below and then clicking the \"Remove\" arrow between the two boxes."
+				permissionsWidget.RightSelectHelp = "chosen_permissions_left"
 				permissionsWidget.RightSearchSelectHelp = ""
 				permissionsWidget.RightHelpChooseAll = "Click to remove all chosen permissions at once."
-				permissionsWidget.HelpText = "Specific permissions for this user. Hold down \"Control\", or \"Command\" on a Mac, to select more than one."
+				permissionsWidget.HelpText = "permission_widget_help"
 				permissionsWidget.PopulateRightSide = func() []*core.SelectOptGroup {
 					ret := make([]*core.SelectOptGroup, 0)
 					user := modelI.(*core.UserGroup)
@@ -622,7 +622,7 @@ func (b Blueprint) InitApp(app core.IApp) {
 		if cUsers == 0 {
 			return nil
 		}
-		return fmt.Errorf("user with name %s is already registered", i.(string))
+		return core.NewHTTPErrorResponse("user_name_already_registered", "user with name %s is already registered", i.(string))
 	})
 
 	core.UadminValidatorRegistry.AddValidator("email-unique", func(i interface{}, o interface{}) error {
@@ -634,26 +634,26 @@ func (b Blueprint) InitApp(app core.IApp) {
 		if cUsers == 0 {
 			return nil
 		}
-		return fmt.Errorf("user with email %s is already registered", i.(string))
+		return core.NewHTTPErrorResponse("user_email_already_registered", "user with email %s is already registered", i.(string))
 	})
 
 	core.UadminValidatorRegistry.AddValidator("username-uadmin", func(i interface{}, o interface{}) error {
 		minLength := core.CurrentConfig.D.Auth.MinUsernameLength
 		maxLength := core.CurrentConfig.D.Auth.MaxUsernameLength
 		currentUsername := i.(string)
 		if maxLength < len(currentUsername) || len(currentUsername) < minLength {
-			return fmt.Errorf("length of the username has to be between %d and %d symbols", minLength, maxLength)
+			return core.NewHTTPErrorResponse("username_length_error", "length of the username has to be between %s and %s symbols", strconv.Itoa(minLength), strconv.Itoa(maxLength))
 		}
 		return nil
 	})
 
 	core.UadminValidatorRegistry.AddValidator("password-uadmin", func(i interface{}, o interface{}) error {
 		passwordStruct := o.(PasswordValidationStruct)
 		if passwordStruct.Password != passwordStruct.ConfirmedPassword {
-			return fmt.Errorf("password doesn't equal to confirmed password")
+			return core.NewHTTPErrorResponse("password_not_equal", "password doesn't equal to confirmed password")
 		}
 		if len(passwordStruct.Password) < core.CurrentConfig.D.Auth.MinPasswordLength {
-			return fmt.Errorf("length of the password has to be at least %d symbols", core.CurrentConfig.D.Auth.MinPasswordLength)
+			return core.NewHTTPErrorResponse("password_length_error", "length of the password has to be at least %d symbols", strconv.Itoa(core.CurrentConfig.D.Auth.MinPasswordLength))
 		}
 		return nil
 	})

core/admin_dashboard_panel.go

@@ -2,7 +2,6 @@ package core
 
 import (
 	"bytes"
-	"errors"
 	"fmt"
 	excelize1 "github.com/360EntSecGroup-Skylar/excelize/v2"
 	"github.com/gin-gonic/gin"
@@ -310,7 +309,7 @@ func (dap *DashboardAdminPanel) RegisterHTTPHandlers(router *gin.Engine) {
 									c.ListEditableFormsForInlines.AddForInlineWholeCollection(inline.Prefix, inlineListEditableCollection)
 								}
 								if !successfulInline {
-									return errors.New("error while submitting inlines")
+									return NewHTTPErrorResponse("error_inline_submit", "error while submitting inlines")
 								}
 								if ctx.Query("_popup") == "1" {
 									mID := GetID(reflect.ValueOf(modelToSave))
@@ -330,7 +329,7 @@ func (dap *DashboardAdminPanel) RegisterHTTPHandlers(router *gin.Engine) {
 								}
 								return nil
 							}
-							return errors.New("not successful form validation")
+							return NewHTTPErrorResponse("not_successful_form_validation", "not successful form validation")
 						})
 						if err != nil {
 							form.FormError.GeneralErrors = append(form.FormError.GeneralErrors, err)

core/admin_model_actions.go

@@ -53,7 +53,7 @@ func init() {
 			}
 			if removalConfirmed != "" {
 				query := ctx.Request.URL.Query()
-				query.Set("message", "Objects were removed succesfully")
+				query.Set("message", Tf(c.Language.Code, "Objects were removed succesfully"))
 				ctx.Redirect(http.StatusFound, fmt.Sprintf("%s/%s/%s/?%s", CurrentConfig.D.Uadmin.RootAdminURL, ap.ParentPage.Slug, ap.ModelName, query.Encode()))
 				return nil
 			}

core/admin_page.go

@@ -220,7 +220,7 @@ func (ap *AdminPage) HandleModelAction(modelActionName string, ctx *gin.Context)
 	PopulateTemplateContextForAdminPanel(ctx, adminContext, adminRequestParams)
 	afo := ap.GetQueryset(adminContext, ap, adminRequestParams)
 	var json1 ModelActionRequestParams
-	if ctx.GetHeader("Content-Type") == "application/json" {
+	if strings.Contains(ctx.GetHeader("Content-Type"), "application/json") {
 		if err := ctx.ShouldBindJSON(&json1); err != nil {
 			ctx.JSON(http.StatusBadRequest, APIBadResponse(err.Error()))
 			return
@@ -241,7 +241,7 @@ func (ap *AdminPage) HandleModelAction(modelActionName string, ctx *gin.Context)
 		primaryKeyField, _ := ap.Form.FieldRegistry.GetPrimaryKey()
 		afo.FilterByMultipleIds(primaryKeyField, json1.RealObjectIds)
 		modelAction, _ := ap.ModelActionsRegistry.GetModelActionByName(modelActionName)
-		if ctx.GetHeader("Content-Type") == "application/json" {
+		if strings.Contains(ctx.GetHeader("Content-Type"), "application/json") {
 			_, affectedRows := modelAction.Handler(ap, afo, ctx)
 			ctx.JSON(http.StatusOK, gin.H{"Affected": strconv.Itoa(int(affectedRows))})
 		} else {

core/admin_page_inlines.go

@@ -1,7 +1,6 @@
 package core
 
 import (
-	"errors"
 	"fmt"
 	"html/template"
 	"mime/multipart"
@@ -56,6 +55,9 @@ func (api *AdminPageInline) RenderExampleForm(adminContext IAdminContext) templa
 	func1 := make(template.FuncMap)
 	path := "admin/inlineexampleform"
 	templateName := CurrentConfig.GetPathToTemplate(path)
+	templateRenderer.AddFuncMap("Translate", func(v interface{}) string {
+		return Tf(adminContext.GetLanguage().Code, v)
+	})
 	return templateRenderer.RenderAsString(
 		templateName,
 		c, FuncMap, func1,
@@ -65,6 +67,14 @@ func (api *AdminPageInline) RenderExampleForm(adminContext IAdminContext) templa
 func (api *AdminPageInline) GetFormForExample(adminContext IAdminContext) *FormListEditable {
 	modelI, _ := api.GenerateModelI(nil)
 	form := api.ListDisplay.BuildListEditableFormForNewModel(adminContext, "toreplacewithid", modelI)
+	r := NewTemplateRenderer("")
+	r.AddFuncMap("Translate", func(v interface{}) string {
+		return Tf(adminContext.GetLanguage().Code, v)
+	})
+	for _, field := range form.FieldRegistry.GetAllFields() {
+		field.FieldConfig.Widget.RenderUsingRenderer(r)
+	}
+	//	return r.RenderAsString(templateName, data, baseFuncMap)
 	return form
 }
 
@@ -160,7 +170,7 @@ func (api *AdminPageInline) ProceedRequest(afo IAdminFilterObjects, f *multipart
 		}
 	}
 	if err {
-		return collection, errors.New("error while validating inlines")
+		return collection, NewHTTPErrorResponse("inline_validation_error", "error while validating inlines")
 	}
 	return collection, nil
 }

core/blueprint_interfaces.go

@@ -1,6 +1,7 @@
 package core
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	mapset "github.com/deckarep/golang-set"
@@ -288,6 +289,18 @@ func (r BlueprintRegistry) InitializeRouting(app IApp, router *gin.Engine) {
 			"message": "pong",
 		})
 	})
+	router.GET("/localization/", func(ctx *gin.Context) {
+		type Context struct {
+			AdminContext
+		}
+		c := &Context{}
+		adminRequestParams := NewAdminRequestParamsFromGinContext(ctx)
+		PopulateTemplateContextForAdminPanel(ctx, c, adminRequestParams)
+		langMap := ReadLocalization(c.GetLanguage().Code)
+		langMapB, _ := json.Marshal(langMap)
+		ctx.Header("Content-Type", "application/javascript")
+		ctx.String(200, fmt.Sprintf("setLocalization(%s)", string(langMapB)))
+	})
 	router.POST("/testcsrf/", func(c *gin.Context) {
 		c.String(200, "csrf token test passed")
 	})

core/config_interfaces.go

@@ -161,6 +161,7 @@ type UadminConfig struct {
 	TemplatesFS               embed.FS
 	OverridenTemplatesFS      *embed.FS
 	LocalizationFS            embed.FS
+	CustomLocalizationFS      *embed.FS
 	RequiresCsrfCheck         func(c *gin.Context) bool
 	PatternsToIgnoreCsrfCheck *list.List
 	ErrorHandleFunc           func(int, string, string)