Form alert (#2738)

* flash alert messages on create/edit/upload forms

Author: samialfattani

babel/admin.pot

@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Flask-Admin VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2025-12-06 17:54+0100\n"
+"POT-Creation-Date: 2025-12-30 13:22+0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <[email protected]>\n"
@@ -26,193 +26,193 @@ msgstr ""
 msgid "Cli: Invalid command."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:414
+#: ../flask_admin/contrib/fileadmin/__init__.py:445
 msgid "File to upload"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:422
+#: ../flask_admin/contrib/fileadmin/__init__.py:453
 msgid "File required."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:427
+#: ../flask_admin/contrib/fileadmin/__init__.py:458
 msgid "Invalid file type."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:440
+#: ../flask_admin/contrib/fileadmin/__init__.py:471
 msgid "Content"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:457
+#: ../flask_admin/contrib/fileadmin/__init__.py:488
 msgid "Invalid name"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:467
+#: ../flask_admin/contrib/fileadmin/__init__.py:498
 #: ../flask_admin/tests/sqla/test_translation.py:22
 msgid "Name"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:838
+#: ../flask_admin/contrib/fileadmin/__init__.py:871
 #, python-format
 msgid "File \"%(name)s\" already exists."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:885
-#: ../flask_admin/contrib/fileadmin/__init__.py:992
-#: ../flask_admin/contrib/fileadmin/__init__.py:1068
-#: ../flask_admin/contrib/fileadmin/__init__.py:1142
-#: ../flask_admin/contrib/fileadmin/__init__.py:1213
-#: ../flask_admin/contrib/fileadmin/__init__.py:1284
-#: ../flask_admin/model/base.py:2561
+#: ../flask_admin/contrib/fileadmin/__init__.py:922
+#: ../flask_admin/contrib/fileadmin/__init__.py:1029
+#: ../flask_admin/contrib/fileadmin/__init__.py:1107
+#: ../flask_admin/contrib/fileadmin/__init__.py:1181
+#: ../flask_admin/contrib/fileadmin/__init__.py:1252
+#: ../flask_admin/contrib/fileadmin/__init__.py:1323
+#: ../flask_admin/model/base.py:2565
 msgid "Permission denied."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:988
+#: ../flask_admin/contrib/fileadmin/__init__.py:1025
 msgid "File uploading is disabled."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1001
+#: ../flask_admin/contrib/fileadmin/__init__.py:1038
 #, python-format
 msgid "Successfully saved file: %(name)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1010
+#: ../flask_admin/contrib/fileadmin/__init__.py:1047
 #, python-format
 msgid "Failed to save file: %(error)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1024
+#: ../flask_admin/contrib/fileadmin/__init__.py:1063
 #: ../flask_admin/templates/bootstrap4/admin/file/list.html:154
 #: ../flask_admin/templates/bootstrap4/admin/file/list.html:156
 msgid "Upload File"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1064
+#: ../flask_admin/contrib/fileadmin/__init__.py:1103
 msgid "Directory creation is disabled."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1085
+#: ../flask_admin/contrib/fileadmin/__init__.py:1124
 #, python-format
 msgid "Successfully created directory: %(directory)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1094
+#: ../flask_admin/contrib/fileadmin/__init__.py:1133
 #, python-format
 msgid "Failed to create directory: %(error)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1111
+#: ../flask_admin/contrib/fileadmin/__init__.py:1150
 #: ../flask_admin/templates/bootstrap4/admin/file/list.html:165
 #: ../flask_admin/templates/bootstrap4/admin/file/list.html:167
 msgid "Create Directory"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1138
+#: ../flask_admin/contrib/fileadmin/__init__.py:1177
 msgid "Deletion is disabled."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1147
+#: ../flask_admin/contrib/fileadmin/__init__.py:1186
 msgid "Directory deletion is disabled."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1155
+#: ../flask_admin/contrib/fileadmin/__init__.py:1194
 #, python-format
 msgid "Directory \"%(path)s\" was successfully deleted."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1162
+#: ../flask_admin/contrib/fileadmin/__init__.py:1201
 #, python-format
 msgid "Failed to delete directory: %(error)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1173
-#: ../flask_admin/contrib/fileadmin/__init__.py:1382
+#: ../flask_admin/contrib/fileadmin/__init__.py:1212
+#: ../flask_admin/contrib/fileadmin/__init__.py:1421
 #, python-format
 msgid "File \"%(name)s\" was successfully deleted."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1179
-#: ../flask_admin/contrib/fileadmin/__init__.py:1388
+#: ../flask_admin/contrib/fileadmin/__init__.py:1218
+#: ../flask_admin/contrib/fileadmin/__init__.py:1427
 #, python-format
 msgid "Failed to delete file: %(name)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1209
+#: ../flask_admin/contrib/fileadmin/__init__.py:1248
 msgid "Renaming is disabled."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1217
+#: ../flask_admin/contrib/fileadmin/__init__.py:1256
 msgid "Path does not exist."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1230
+#: ../flask_admin/contrib/fileadmin/__init__.py:1269
 #, python-format
 msgid "Successfully renamed \"%(src)s\" to \"%(dst)s\""
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1239
+#: ../flask_admin/contrib/fileadmin/__init__.py:1278
 #, python-format
 msgid "Failed to rename: %(error)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1262
+#: ../flask_admin/contrib/fileadmin/__init__.py:1301
 #, python-format
 msgid "Rename %(name)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1302
+#: ../flask_admin/contrib/fileadmin/__init__.py:1341
 #, python-format
 msgid "Error saving changes to %(name)s."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1308
+#: ../flask_admin/contrib/fileadmin/__init__.py:1347
 #, python-format
 msgid "Changes to %(name)s saved successfully."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1318
+#: ../flask_admin/contrib/fileadmin/__init__.py:1357
 #, python-format
 msgid "Error reading %(name)s."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1322
-#: ../flask_admin/contrib/fileadmin/__init__.py:1335
+#: ../flask_admin/contrib/fileadmin/__init__.py:1361
+#: ../flask_admin/contrib/fileadmin/__init__.py:1374
 #, python-format
 msgid "Unexpected error while reading from %(name)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1330
+#: ../flask_admin/contrib/fileadmin/__init__.py:1369
 #, python-format
 msgid "Cannot edit %(name)s."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1357
+#: ../flask_admin/contrib/fileadmin/__init__.py:1396
 #, python-format
 msgid "Editing %(path)s"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1367
+#: ../flask_admin/contrib/fileadmin/__init__.py:1406
 #: ../flask_admin/contrib/mongoengine/view.py:727
 #: ../flask_admin/contrib/peewee/view.py:606
 #: ../flask_admin/contrib/pymongo/view.py:418
 #: ../flask_admin/contrib/sqla/view.py:1453
 msgid "Delete"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1368
+#: ../flask_admin/contrib/fileadmin/__init__.py:1407
 msgid "Are you sure you want to delete these files?"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1372
+#: ../flask_admin/contrib/fileadmin/__init__.py:1411
 msgid "File deletion is disabled."
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/__init__.py:1394
+#: ../flask_admin/contrib/fileadmin/__init__.py:1433
 #: ../flask_admin/templates/bootstrap4/admin/model/details.html:17
 #: ../flask_admin/templates/bootstrap4/admin/model/edit.html:22
 msgid "Edit"
 msgstr ""
 
-#: ../flask_admin/contrib/fileadmin/s3.py:233
+#: ../flask_admin/contrib/fileadmin/s3.py:238
 msgid "Cannot operate on non empty directories"
 msgstr ""
 
@@ -314,8 +314,8 @@ msgstr ""
 #: ../flask_admin/contrib/mongoengine/view.py:657
 #: ../flask_admin/contrib/peewee/view.py:567
 #: ../flask_admin/contrib/pymongo/view.py:376
-#: ../flask_admin/contrib/sqla/view.py:1402 ../flask_admin/model/base.py:2716
-#: ../flask_admin/model/base.py:2723 ../flask_admin/model/base.py:2727
+#: ../flask_admin/contrib/sqla/view.py:1402 ../flask_admin/model/base.py:2720
+#: ../flask_admin/model/base.py:2727 ../flask_admin/model/base.py:2731
 #, python-format
 msgid "Failed to update record. %(error)s"
 msgstr ""
@@ -338,7 +338,7 @@ msgstr ""
 #: ../flask_admin/contrib/mongoengine/view.py:740
 #: ../flask_admin/contrib/peewee/view.py:627
 #: ../flask_admin/contrib/pymongo/view.py:432
-#: ../flask_admin/contrib/sqla/view.py:1477 ../flask_admin/model/base.py:2496
+#: ../flask_admin/contrib/sqla/view.py:1477 ../flask_admin/model/base.py:2500
 #, python-format
 msgid "Record was successfully deleted."
 msgid_plural "%(count)s records were successfully deleted."
@@ -418,16 +418,24 @@ msgstr ""
 msgid "Record was successfully created."
 msgstr ""
 
-#: ../flask_admin/model/base.py:2401 ../flask_admin/model/base.py:2455
-#: ../flask_admin/model/base.py:2489 ../flask_admin/model/base.py:2707
+#: ../flask_admin/model/base.py:2371
+msgid "Failed to create record."
+msgstr ""
+
+#: ../flask_admin/model/base.py:2403 ../flask_admin/model/base.py:2459
+#: ../flask_admin/model/base.py:2493 ../flask_admin/model/base.py:2711
 msgid "Record does not exist."
 msgstr ""
 
-#: ../flask_admin/model/base.py:2409 ../flask_admin/model/base.py:2712
+#: ../flask_admin/model/base.py:2411 ../flask_admin/model/base.py:2716
 msgid "Record was successfully saved."
 msgstr ""
 
-#: ../flask_admin/model/base.py:2651
+#: ../flask_admin/model/base.py:2424
+msgid "Failed to save record."
+msgstr ""
+
+#: ../flask_admin/model/base.py:2655
 #, python-format
 msgid "Export type \"%(type)s\" is not supported."
 msgstr ""

examples/bootstrap4/uv.lock

@@ -1049,6 +1049,8 @@ def upload(self, path: str | None = None) -> T_RESPONSE | str:
                     ),
                     "error",
                 )
+        else:
+            helpers.flash_errors(form, message="Failed to upload file: %(error)s")
 
         if self.upload_modal and request.args.get("modal"):
             template = self.upload_modal_template

flask_admin/contrib/fileadmin/__init__.py

@@ -68,7 +68,7 @@
 from flask_admin.form import BaseForm
 from flask_admin.form import FormOpts
 from flask_admin.form import rules
-from flask_admin.helpers import flash_errors
+from flask_admin.helpers import flash_errors, is_form_submitted
 from flask_admin.helpers import get_form_data
 from flask_admin.helpers import get_redirect_target
 from flask_admin.helpers import validate_form_on_submit
@@ -2343,6 +2343,7 @@ def create_view(self) -> T_RESPONSE | str:
             return redirect(return_url)
 
         form = self.create_form()
+
         if not hasattr(form, "_validated_ruleset") or not form._validated_ruleset:
             self._validate_form_instance(ruleset=self._form_create_rules, form=form)
 
@@ -2367,6 +2368,9 @@ def create_view(self) -> T_RESPONSE | str:
                     model = t.cast(T_ORM_MODEL, model)
                     # save button
                     return redirect(self.get_save_return_url(model, is_created=True))
+        else:
+            if is_form_submitted():
+                flash(gettext("Failed to create record."), "danger")
 
         form_opts = FormOpts(
             widget_args=self.form_widget_args, form_rules=self._form_create_rules
@@ -2418,6 +2422,9 @@ def edit_view(self) -> T_RESPONSE | str:
                 else:
                     # save button
                     return redirect(self.get_save_return_url(model, is_created=False))
+        else:
+            if is_form_submitted():
+                flash(gettext("Failed to save record."), "danger")
 
         if request.method == "GET" or form.errors:
             self.on_form_prefill(form, id)