Implement API endpoint for transactions

http/always-needed-data.go

@@ -1,6 +1,7 @@
 package http
 
 import (
+	"fmt"
 	"net/http"
 
 	"git.javil.eu/jacob1123/budgeteer/postgres"
@@ -17,8 +18,7 @@ func (h *Handler) getImportantData(c *gin.Context) {
 	budgetID := c.Param("budgetid")
 	budgetUUID, err := uuid.Parse(budgetID)
 	if err != nil {
-		c.Redirect(http.StatusTemporaryRedirect, "/login")
-		c.Abort()
+		c.AbortWithError(http.StatusBadRequest, fmt.Errorf("budgetid missing from URL"))
 		return
 	}