I have been searching on Google and StackOverflow about this. Basically, I want to try and override the delete function on Flask-Admin to not actually delete a record, but instead update a row of the object called 'deleted_by' and 'deleted_on'.
I have found a few questions on StackOverflow that explain how to change the logic on the save button by using on_model_change, but no one specific about the delete model logic. I have also not found any information regarding this on the documentation. Could anyone show me how should I handle this issue?
Thanks in advance!
Override method delete_model in your view. Here is the default behaviour if you are using Sqlalchemy views, note the call to self.session.delete(model) in the try ... except block.
def delete_model(self, model):
"""
Delete model.
:param model:
Model to delete
"""
try:
self.on_model_delete(model)
self.session.flush()
self.session.delete(model)
self.session.commit()
except Exception as ex:
if not self.handle_view_exception(ex):
flash(gettext('Failed to delete record. %(error)s', error=str(ex)), 'error')
log.exception('Failed to delete record.')
self.session.rollback()
return False
else:
self.after_model_delete(model)
return True
You would need something like the following in your view:
class MyModelView(ModelView):
def delete_model(self, model):
"""
Delete model.
:param model:
Model to delete
"""
try:
self.on_model_delete(model)
# Add your custom logic here and don't forget to commit any changes e.g.
# self.session.commit()
except Exception as ex:
if not self.handle_view_exception(ex):
flash(gettext('Failed to delete record. %(error)s', error=str(ex)), 'error')
log.exception('Failed to delete record.')
self.session.rollback()
return False
else:
self.after_model_delete(model)
return True
Also, you might not want to bother with the self.on_model_delete(model) and self.after_model_delete(model) calls because by default they do nothing.