server: reuse InvalidModelNameErrMsg type (#8163)

server/routes.go

@@ -142,7 +142,7 @@ func (s *Server) GenerateHandler(c *gin.Context) {
 		switch {
 		case errors.Is(err, fs.ErrNotExist):
 			c.JSON(http.StatusNotFound, gin.H{"error": fmt.Sprintf("model '%s' not found", req.Model)})
-		case err.Error() == "invalid model name":
+		case err.Error() == errtypes.InvalidModelNameErrMsg:
 			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		default:
 			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
@@ -568,7 +568,7 @@ func (s *Server) PullHandler(c *gin.Context) {
 
 	name := model.ParseName(cmp.Or(req.Model, req.Name))
 	if !name.IsValid() {
-		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": "invalid model name"})
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": errtypes.InvalidModelNameErrMsg})
 		return
 	}
 
@@ -829,7 +829,7 @@ func (s *Server) ShowHandler(c *gin.Context) {
 		switch {
 		case os.IsNotExist(err):
 			c.JSON(http.StatusNotFound, gin.H{"error": fmt.Sprintf("model '%s' not found", req.Model)})
-		case err.Error() == "invalid model name":
+		case err.Error() == errtypes.InvalidModelNameErrMsg:
 			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 		default:
 			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
@@ -1470,7 +1470,7 @@ func (s *Server) ChatHandler(c *gin.Context) {
 			switch {
 			case os.IsNotExist(err):
 				c.JSON(http.StatusNotFound, gin.H{"error": fmt.Sprintf("model '%s' not found", req.Model)})
-			case err.Error() == "invalid model name":
+			case err.Error() == errtypes.InvalidModelNameErrMsg:
 				c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 			default:
 				c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})