misc: ellipsize field labels used in snapshot descriptions (#52236)

tests/test_snapshots.py

@@ -176,6 +176,14 @@ def test_form_snapshot_comments(pub):
     resp = resp.forms[0].submit().follow()
     assert pub.snapshot_class.select(order_by='-timestamp')[0].comment == 'New field "foobar"'
 
+    resp.forms[0]['label'] = 'foo' * 30
+    resp.forms[0]['type'] = 'string'
+    resp = resp.forms[0].submit().follow()
+    assert (
+        pub.snapshot_class.select(order_by='-timestamp')[0].comment
+        == 'New field "foofoofoofoofoofoofoofoofoo(…)"'
+    )
+
 
 def test_form_snapshot_history(pub, formdef_with_history):
     create_superuser(pub)

wcs/admin/fields.py

@@ -113,7 +113,7 @@ class FieldDefPage(Directory):
             if not widget:
                 continue
             setattr(self.field, f.replace('-', '_'), widget.parse())
-        self.objectdef.store(comment=_('Modification of field "%s"') % self.field.unhtmled_label)
+        self.objectdef.store(comment=_('Modification of field "%s"') % self.field.ellipsized_label)
 
     def get_deletion_extra_warning(self):
         return _('Warning: this field data will be permanently deleted.')
@@ -174,7 +174,7 @@ class FieldDefPage(Directory):
                     del self.objectdef.fields[index]
             # delete current field
             del self.objectdef.fields[current_field_index]
-            self.objectdef.store(comment=_('Deletion of field "%s"') % self.field.unhtmled_label)
+            self.objectdef.store(comment=_('Deletion of field "%s"') % self.field.ellipsized_label)
             # redirect to the field that was above this one
             if self.objectdef.fields:
                 if current_field_index == 0:
@@ -553,7 +553,7 @@ class FieldsDirectory(Directory):
                 label=label, type=field_type, id=self.objectdef.get_new_field_id()
             )
             self.objectdef.fields.insert(insertion_point, field)
-            self.objectdef.store(comment=_('New field "%s"') % field.unhtmled_label)
+            self.objectdef.store(comment=_('New field "%s"') % field.ellipsized_label)
         elif form.get_widget('form') and form.get_widget('form').parse():
             formdef = FormDef.get(form.get_widget('form').parse())
             for j, field in enumerate(formdef.fields):

wcs/fields.py

@@ -286,6 +286,10 @@ class Field:
     def unhtmled_label(self):
         return force_str(html.unescape(force_text(re.sub('<.*?>', ' ', self.label or ''))).strip())
 
+    @property
+    def ellipsized_label(self):
+        return ellipsize(self.unhtmled_label)
+
     def get_admin_attributes(self):
         return ['label', 'type', 'condition']