diff --git a/handlers/debt.go b/handlers/debt.go
index 6201dae..5eb6871 100644
--- a/handlers/debt.go
+++ b/handlers/debt.go
@@ -1,12 +1,8 @@
 package handlers
 
 import (
-	"fmt"
-	"strconv"
-
 	"git.qowevisa.me/Qowevisa/gonuts/db"
 	"git.qowevisa.me/Qowevisa/gonuts/types"
-	"git.qowevisa.me/Qowevisa/gonuts/utils"
 	"github.com/gin-gonic/gin"
 )
 
@@ -20,60 +16,23 @@ import (
 // @Success 200 {object} types.DbDebt
 // @Failure 400 {object} types.ErrorResponse
 // @Failure 401 {object} types.ErrorResponse
+// @Failure 403 {object} types.ErrorResponse
 // @Failure 500 {object} types.ErrorResponse
 // @Security ApiKeyAuth
 // @Router /debt/:id [get]
 func DebtGetId(c *gin.Context) {
-	userIDAny, exists := c.Get("UserID")
-	if !exists {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 001"})
-		return
-	}
-
-	var userID uint
-	if userIDVal, ok := userIDAny.(uint); !ok {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 002"})
-		return
-	} else {
-		userID = userIDVal
-	}
-
-	idStr := c.Param("id")
-	var id uint
-	if idVal, err := strconv.ParseUint(idStr, 10, 32); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	} else {
-		id = uint(idVal)
-	}
-
-	var dbDebt db.Debt
-	dbc := db.Connect()
-	if err := dbc.Find(&dbDebt, id).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-	if dbDebt.ID == 0 {
-		c.JSON(500, types.ErrorResponse{Message: "DAFUQ003"})
-		return
-	}
-	if dbDebt.UserID != userID {
-		c.JSON(401, types.ErrorResponse{Message: "This debt.id is not yours, you sneaky."})
-		return
-	}
-
-	ret := types.DbDebt{
-		ID:       dbDebt.ID,
-		CardID:   dbDebt.CardID,
-		Comment:  dbDebt.Comment,
-		Value:    dbDebt.Value,
-		IOwe:     dbDebt.IOwe,
-		Date:     dbDebt.Date,
-		DateEnd:  dbDebt.DateEnd,
-		Finished: dbDebt.Finished,
-		UserID:   dbDebt.UserID,
-	}
-	c.JSON(200, ret)
+	GetHandler(func(inp *db.Debt) types.DbDebt {
+		return types.DbDebt{
+			ID:       inp.ID,
+			CardID:   inp.CardID,
+			Comment:  inp.Comment,
+			Value:    inp.Value,
+			IOwe:     inp.IOwe,
+			Date:     inp.Date,
+			DateEnd:  inp.DateEnd,
+			Finished: inp.Finished,
+		}
+	})(c)
 }
 
 // @Summary Get debt by id
@@ -85,60 +44,22 @@ func DebtGetId(c *gin.Context) {
 // @Param debt body types.DbDebt true "Debt"
 // @Success 200 {object} types.Message
 // @Failure 400 {object} types.ErrorResponse
-// @Failure 403 {object} types.ErrorResponse
 // @Failure 500 {object} types.ErrorResponse
 // @Security ApiKeyAuth
 // @Router /debt/add [post]
 func DebtAdd(c *gin.Context) {
-	userIDAny, exists := c.Get("UserID")
-	if !exists {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 001"})
-		return
-	}
-
-	var userID uint
-	if userIDVal, ok := userIDAny.(uint); !ok {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 002"})
-		return
-	} else {
-		userID = userIDVal
-	}
-
-	var debt types.DbDebt
-	if err := c.ShouldBindJSON(&debt); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	}
-	if debt.UserID != 0 && userID != debt.UserID {
-		c.JSON(403, types.ErrorResponse{Message: "UserID in body is different than yours!"})
-	}
-	if debt.UserID == 0 {
-		debt.UserID = userID
-	}
-
-	dbDebt := &db.Debt{
-		CardID:   debt.CardID,
-		Comment:  debt.Comment,
-		Value:    debt.Value,
-		IOwe:     debt.IOwe,
-		Date:     debt.Date,
-		DateEnd:  debt.DateEnd,
-		Finished: debt.Finished,
-		UserID:   debt.UserID,
-	}
-	dbc := db.Connect()
-	if err := dbc.Create(&dbDebt).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-	if dbDebt.ID == 0 {
-		c.JSON(500, types.ErrorResponse{Message: "DAFUQ004"})
-		return
-	}
-	msg := types.Message{
-		Message: fmt.Sprintf("Debt with id %d was successfully created!", dbDebt.ID),
-	}
-	c.JSON(200, msg)
+	debt := &db.Debt{}
+	CreateHandler(debt,
+		func(src types.DbDebt, dst *db.Debt) {
+			dst.CardID = src.CardID
+			dst.Comment = src.Comment
+			dst.Value = src.Value
+			dst.IOwe = src.IOwe
+			dst.Date = src.Date
+			dst.DateEnd = src.DateEnd
+			dst.Finished = src.Finished
+		},
+	)(c)
 }
 
 // @Summary Edit debt by id
@@ -152,72 +73,34 @@ func DebtAdd(c *gin.Context) {
 // @Success 200 {object} types.DbDebt
 // @Failure 400 {object} types.ErrorResponse
 // @Failure 401 {object} types.ErrorResponse
+// @Failure 403 {object} types.ErrorResponse
 // @Failure 500 {object} types.ErrorResponse
 // @Security ApiKeyAuth
 // @Router /debt/edit/:id [put]
 func DebtPutId(c *gin.Context) {
-	userIDAny, exists := c.Get("UserID")
-	if !exists {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 001"})
-		return
-	}
-
-	var userID uint
-	if userIDVal, ok := userIDAny.(uint); !ok {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 002"})
-		return
-	} else {
-		userID = userIDVal
-	}
-
-	idStr := c.Param("id")
-	var id uint
-	if idVal, err := strconv.ParseUint(idStr, 10, 32); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	} else {
-		id = uint(idVal)
-	}
-
-	var dbDebt db.Debt
-	dbc := db.Connect()
-	if err := dbc.Find(&dbDebt, id).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-	if dbDebt.ID == 0 {
-		c.JSON(500, types.ErrorResponse{Message: "DAFUQ003"})
-		return
-	}
-	if dbDebt.UserID != userID {
-		c.JSON(401, types.ErrorResponse{Message: "This debt.id is not yours, you sneaky."})
-		return
-	}
-	var debt types.DbDebt
-	if err := c.ShouldBindJSON(&debt); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	}
-
-	utils.MergeNonZeroFields(debt, dbDebt)
-
-	if err := dbc.Save(dbDebt).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-
-	ret := types.DbDebt{
-		ID:       dbDebt.ID,
-		CardID:   dbDebt.CardID,
-		Comment:  dbDebt.Comment,
-		Value:    dbDebt.Value,
-		IOwe:     dbDebt.IOwe,
-		Date:     dbDebt.Date,
-		DateEnd:  dbDebt.DateEnd,
-		Finished: dbDebt.Finished,
-		UserID:   dbDebt.UserID,
-	}
-	c.JSON(200, ret)
+	UpdateHandler(
+		// Filter used to apply only needed changes from srt to dst before updating dst
+		func(src types.DbDebt, dst *db.Debt) {
+			dst.CardID = src.CardID
+			dst.Comment = src.Comment
+			dst.Value = src.Value
+			dst.IOwe = src.IOwe
+			dst.Date = src.Date
+			dst.DateEnd = src.DateEnd
+			dst.Finished = src.Finished
+		},
+		func(inp *db.Debt) types.DbDebt {
+			return types.DbDebt{
+				ID:       inp.ID,
+				CardID:   inp.CardID,
+				Comment:  inp.Comment,
+				Value:    inp.Value,
+				IOwe:     inp.IOwe,
+				Date:     inp.Date,
+				DateEnd:  inp.DateEnd,
+				Finished: inp.Finished,
+			}
+		})(c)
 }
 
 // @Summary Delete debt by id
@@ -230,62 +113,10 @@ func DebtPutId(c *gin.Context) {
 // @Success 200 {object} types.DbDebt
 // @Failure 400 {object} types.ErrorResponse
 // @Failure 401 {object} types.ErrorResponse
+// @Failure 403 {object} types.ErrorResponse
 // @Failure 500 {object} types.ErrorResponse
 // @Security ApiKeyAuth
 // @Router /debt/delete/:id [delete]
 func DebtDeleteId(c *gin.Context) {
-	userIDAny, exists := c.Get("UserID")
-	if !exists {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 001"})
-		return
-	}
-
-	var userID uint
-	if userIDVal, ok := userIDAny.(uint); !ok {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 002"})
-		return
-	} else {
-		userID = userIDVal
-	}
-
-	idStr := c.Param("id")
-	var id uint
-	if idVal, err := strconv.ParseUint(idStr, 10, 32); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	} else {
-		id = uint(idVal)
-	}
-
-	var dbDebt db.Debt
-	dbc := db.Connect()
-	if err := dbc.Find(&dbDebt, id).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-	if dbDebt.ID == 0 {
-		c.JSON(500, types.ErrorResponse{Message: "DAFUQ003"})
-		return
-	}
-	if dbDebt.UserID != userID {
-		c.JSON(401, types.ErrorResponse{Message: "This debt.id is not yours, you sneaky."})
-		return
-	}
-	if err := dbc.Delete(dbDebt).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-
-	ret := types.DbDebt{
-		ID:       dbDebt.ID,
-		CardID:   dbDebt.CardID,
-		Comment:  dbDebt.Comment,
-		Value:    dbDebt.Value,
-		IOwe:     dbDebt.IOwe,
-		Date:     dbDebt.Date,
-		DateEnd:  dbDebt.DateEnd,
-		Finished: dbDebt.Finished,
-		UserID:   dbDebt.UserID,
-	}
-	c.JSON(200, ret)
+	DeleteHandler[*db.Debt]()(c)
 }