Prevent saving empty datasets by adding validation and error messages in multiple languages

Author: Creylay

DashAI/back/dataloaders/classes/dashai_dataset.py

@@ -264,7 +264,9 @@ def _compute_numeric_metadata(self, dataset_df) -> dict:
         dict
             Dictionary with statistics for each numeric column.
         """
-        numeric_keys = self._get_numeric_columns()
+        numeric_keys = [
+            k for k in self._get_numeric_columns() if k in dataset_df.columns
+        ]
         numeric_cols = dataset_df[numeric_keys]
         numeric_stats = {}
 
@@ -316,7 +318,9 @@ def _compute_categorical_metadata(self, dataset_df) -> dict:
         dict
             Dictionary with statistics for each categorical column.
         """
-        categorical_keys = self._get_categorical_columns()
+        categorical_keys = [
+            k for k in self._get_categorical_columns() if k in dataset_df.columns
+        ]
         categorical_cols = dataset_df[categorical_keys]
         categorical_stats = {}
 
@@ -465,7 +469,9 @@ def _compute_correlations(self, dataset_df) -> dict:
         dict
             Nested dictionary representing the correlation matrix.
         """
-        numeric_keys = self._get_numeric_columns()
+        numeric_keys = [
+            k for k in self._get_numeric_columns() if k in dataset_df.columns
+        ]
         numeric_cols = dataset_df[numeric_keys]
 
         if numeric_cols.empty:

DashAI/front/src/components/notebooks/notebook/DatasetPreviewNotebook.jsx

@@ -248,6 +248,15 @@ export default function DatasetPreviewNotebook({
               endIcon={<Add />}
               onClick={(e) => {
                 e.stopPropagation();
+                if (
+                  convertersLoaded &&
+                  Object.keys(localColumnTypes).length === 0
+                ) {
+                  enqueueSnackbar(t("datasets:error.cannotSaveEmptyDataset"), {
+                    variant: "error",
+                  });
+                  return;
+                }
                 setShowSaveDatasetModal(true);
                 if (tourContext && tourContext.run) {
                   setTimeout(() => {

DashAI/front/src/utils/i18n/locales/de/datasets.json

@@ -93,7 +93,8 @@
     "requiresExactColumns_other": "Erfordert genau {{required}} gültige Spalten, aber {{available}} verfügbar.",
     "requiresMinColumns_one": "Erfordert mindestens {{required}} gültige Spalte, aber nur {{available}} verfügbar.",
     "requiresMinColumns_other": "Erfordert mindestens {{required}} gültige Spalten, aber nur {{available}} verfügbar.",
-    "zipContentsNotCompatible": "ZIP enthält keine mit dem ausgewählten Datenlader kompatiblen Dateien"
+    "zipContentsNotCompatible": "ZIP enthält keine mit dem ausgewählten Datenlader kompatiblen Dateien",
+    "cannotSaveEmptyDataset": "Dataset kann nicht gespeichert werden: Alle Spalten wurden entfernt. Fügen Sie Spalten hinzu, bevor Sie speichern."
   },
   "label": {
     "task": "Aufgabe",

DashAI/front/src/utils/i18n/locales/en/datasets.json

@@ -91,7 +91,8 @@
     "requiresExactColumns_other": "Requires exactly {{required}} valid columns, but {{available}} available.",
     "requiresMinColumns_one": "Requires at least {{required}} valid column, but only {{available}} available.",
     "requiresMinColumns_other": "Requires at least {{required}} valid columns, but only {{available}} available.",
-    "zipContentsNotCompatible": "ZIP does not contain files compatible with the selected dataloader"
+    "zipContentsNotCompatible": "ZIP does not contain files compatible with the selected dataloader",
+    "cannotSaveEmptyDataset": "Cannot save dataset: all columns have been removed. Add columns before saving."
   },
   "label": {
     "task": "Task",

DashAI/front/src/utils/i18n/locales/es/datasets.json

@@ -96,7 +96,8 @@
     "requiresMinColumns_one": "Requiere al menos {{required}} columna válida, pero solo {{available}} disponible.",
     "requiresMinColumns_many": "Requiere al menos {{required}} columnas válidas, pero solo {{available}} disponibles.",
     "requiresMinColumns_other": "Requiere al menos {{required}} columnas válidas, pero solo {{available}} disponibles.",
-    "zipContentsNotCompatible": "El ZIP no contiene archivos compatibles con el dataloader seleccionado"
+    "zipContentsNotCompatible": "El ZIP no contiene archivos compatibles con el dataloader seleccionado",
+    "cannotSaveEmptyDataset": "No se puede guardar el dataset: se eliminaron todas las columnas. Agrega columnas antes de guardar."
   },
   "label": {
     "task": "Tarea",

DashAI/front/src/utils/i18n/locales/pt/datasets.json

@@ -96,7 +96,8 @@
     "requiresMinColumns_one": "Requer pelo menos {{required}} coluna válida, mas apenas {{available}} disponível.",
     "requiresMinColumns_many": "Requer pelo menos {{required}} colunas válidas, mas apenas {{available}} disponíveis.",
     "requiresMinColumns_other": "Requer pelo menos {{required}} colunas válidas, mas apenas {{available}} disponíveis.",
-    "zipContentsNotCompatible": "O arquivo ZIP não contém arquivos compatíveis com o dataloader selecionado"
+    "zipContentsNotCompatible": "O arquivo ZIP não contém arquivos compatíveis com o dataloader selecionado",
+    "cannotSaveEmptyDataset": "Não é possível salvar o dataset: todas as colunas foram removidas. Adicione colunas antes de salvar."
   },
   "label": {
     "task": "Tarefa",

DashAI/front/src/utils/i18n/locales/zh/datasets.json

@@ -92,7 +92,8 @@
     "requiresExactColumns_other": "需要恰好 {{required}} 个有效列，但只有 {{available}} 个可用。",
     "requiresMinColumns_one": "至少需要 {{required}} 个有效列，但只有 {{available}} 个可用。",
     "requiresMinColumns_other": "至少需要 {{required}} 个有效列，但只有 {{available}} 个可用。",
-    "zipContentsNotCompatible": "ZIP 文件不包含与所选数据加载器兼容的文件"
+    "zipContentsNotCompatible": "ZIP 文件不包含与所选数据加载器兼容的文件",
+    "cannotSaveEmptyDataset": "无法保存数据集：所有列已被删除，请在保存前添加列。"
   },
   "label": {
     "task": "任务",