Model.objects.create as default
hi, say I have this model
class Event(models.Model):
...
metrics = models.OneToOneField("evmetrics.Metrics",
on_delete=models.PROTECT,
default=Metrics.objects.create)
I want to be sure of what I'm writing here, for each new Event object
created, a new Metrics object will be create and link to the event by a
OneToOne relationship, is there any chance this is really bad code or this
could be a problem ?
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IntegrityError on a foreign key constraint
Hi, I'm having a really incomprehensible error currently. We are working with three models here, "DataImport", "Contact" and "Dataset", the DataImport model import data from a file to a Dataset object, the data is imported as a Contact object , the DataImport model have a foreign key to the Dataset model. This is how the app works: - a user upload a file - we convert the content of the file to a TablibDataset or TablibDatabook, these are tablib (python package) classes, don't worry too much about this, tablib have their own Dataset and I have my own, that's why I import the tablib classes with aliases - if the loaded data is a TablibDataset, the import start and create contacts from the loaded data (this works) - if the loaded_data is a TablibDatabook, the databook is split into multiple sheet (yes I'm working with excel files) and new Dataset (my model) and DataImport objects are created to handle the import for each sheet (here is the issue) All import are done as async task using the django_q package The issue I have is that, when I create a new dataset, start the import and try to add a new contact I get this: ``` insert or update on table "datasets_contact" violates foreign key constraint "datasets_contact_dataset_id_9dda7f76_fk_datasets_dataset_id" DETAIL: Key (dataset_id)=(39) is not present in table "datasets_dataset". ``` It seems like the dataset is not save in db that's why I'm getting this error when I try to create a new contact, but I'm creating my Dataset object with Dataset.objects.create(), I don't understand the problem. The code for all this is a bit long, so here is a gist with all the necessary code https://gist.github.com/Tobi-De/411ee7b7fc988864869c8d7ad93ab34f The method that create the Dataset and DataImpot objects is the class method "create_import_from_databook" -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/dbfc0761-347d-47a5-9689-9886ce1e37fcn%40googlegroups.com.
Auto refreshing frontend
Hello, I am building a very simple website in which the main page allows users to import their contacts via csv or excel files to a postgres database. I have a page that displays whether or not the import of contacts is finished, I need my frontend to update automatically as soon as the task is finished in the background, basically when the data is fully imported into the database. I'm thinking of looking for a way to refresh the page every 5 second or something like that, but I don't think this is a good idea. I am not quite sure how to approach this. I still have some learning to do, but I need some guidance on what approach to take. I am thinking I will need to use JQuery/Ajax? So write my HTML template and then link it to a Javascript script that does the refresh? I think I can figure out how to refresh the page, but how do I have the model queried, view called, and new data fed to the HTML template each time the page auto-refreshes? I am also not sure if web sockets are what I need. If ajax is not the answer here, an example of scenario where ajax is useful would be really helpful, I always hear about it but I don't know when it can be useful. Any help or link to resources is immensely appreciated!! Thank you. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/5560f982-adc8-4498-9dbf-ddd7677d6a51n%40googlegroups.com.
Deploy you django project
HI guys I hope you are all doing well, for those of you looking for a way to deploy your django projects i wrote a blog post on how to achieve that on a personal blog i started recently (today in fact).Feel free to take a look and give me your feedback. You can check the article here: https://www.tobidegnon.com/blog/post-detail/host-your-django-project-on-digital-ocean-with-dok/ -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/37c9e9e0-4d6a-4366-94d7-1de18d214949n%40googlegroups.com.
Mass Emailing
Hi, hope every one is doing fine, I have an issue that I have not been able to resolve for several months now. I have two apps where I need to send a bunch of emails on a monthly basis, The first app is host on heroku and the second on DigitalOcean with dokku, for async task I'm using Django_Q and Redis is used as broker, when I need to send 1 or 2 emails, or even something like 100, there is no issue, the emails are sent and the task is marked as successful in the Django_q admin section, but when I need to send just 200 or 500 (send 500 is supposed to be nothing), the task is never accomplished, I don't receive any error message sand even if I wait for days the task is never marked completed and all emails are not sent, at first I think it was a resources issue, in the case of my first app I'm using the heroku hobby-dev plan, maybe this is two low for the work I need to get done, but for my second app I'm using the 15$ plan on DigitalOcean, for just 500 emails i think that's enough, Maybe I should use celery instead of Django_q, I don't know, I need to know what are the minimum requirements to send a lot(and by a lot I mean something like 50k for example) emails with a Django app, and how to do this efficiently. An article, a package name, anything would be helpful. I'm using amazon SES for both apps. Thanks -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/5d981f11-c996-47bc-8897-72a43b4a76a7n%40googlegroups.com.
