I am trying to get started with South. I had an existing database and I added South (syncdb, schemamigration –initial). Then, I updated models.py to add a field and ran ./manage.py schemamigration myapp –auto. It seemed to find the field and said I could apply this with ./manage.py migrate myapp. But, doing that gave the … Read more
How do I use pagination with Django 1.3? The documentation is not very clear on this. What goes to my views.py? What goes to my template? What goes to my URLconf file? 3 Answers 3
I’m trying to format numbers. Examples: 1 => 1 12 => 12 123 => 123 1234 => 1,234 12345 => 12,345 It strikes as a fairly common thing to do but I can’t figure out which filter I’m supposed to use. Edit: If you’ve a generic Python way to do this, I’m happy adding a … Read more
I am storing a phone number in model like this: phone_number = models.CharField(max_length=12) The user would enter a phone number and I would use the phone number for SMS authentication. This application would be used globally. So I would also need a country code. Is CharField a good way to store a phone number? And, … Read more
I’m trying to process incoming JSON/Ajax requests with Django/Python. request.is_ajax() is True on the request, but I have no idea where the payload is with the JSON data. request.POST.dir contains this: [‘__class__’, ‘__cmp__’, ‘__contains__’, ‘__copy__’, ‘__deepcopy__’, ‘__delattr__’, ‘__delitem__’, ‘__dict__’, ‘__doc__’, ‘__eq__’, ‘__ge__’, ‘__getattribute__’, ‘__getitem__’, ‘__gt__’, ‘__hash__’, ‘__init__’, ‘__iter__’, ‘__le__’, ‘__len__’, ‘__lt__’, ‘__module__’, ‘__ne__’, ‘__new__’, ‘__reduce__’, … Read more
How do I run an update and select statements on the same queryset rather than having to do two queries: – one to select the object – and one to update the object The equivalent in SQL would be something like: update my_table set field_1 = ‘some value’ where pk_field = some_value 7 Answers 7
I have the following: answers = Answer.objects.filter(id__in=[answer.id for answer in answer_set.answers.all()]) then later: for i in range(len(answers)): # iterate through all existing QuestionAnswer objects for existing_question_answer in existing_question_answers: # if an answer is already associated, remove it from the # list of answers to save if answers[i].id == existing_question_answer.answer.id: answers.remove(answers[i]) # doesn’t work existing_question_answers.remove(existing_question_answer) I … Read more
This code is in django/db/models/fields.py It creates/defines an exception? class ReverseSingleRelatedObjectDescriptor(six.with_metaclass(RenameRelatedObjectDescriptorMethods)): # This class provides the functionality that makes the related-object # managers available as attributes on a model class, for fields that have # a single “remote” value, on the class that defines the related field. # In the example “choice.poll”, the poll attribute … Read more
I just want to drop the favicon.ico in my staticfiles directory and then have it show up in my app. How can I accomplish this? I have placed the favicon.ico file in my staticfiles directory, but it doesn’t show up and I see this in my log: 127.0.0.1 – – [21/Feb/2014 10:10:53] “GET /favicon.ico HTTP/1.1” … Read more
I’m planning to rename several models in an existing Django project where there are many other models that have foreign key relationships to the models I would like to rename. I’m fairly certain this will require multiple migrations, but I’m not sure of the exact procedure. Let’s say I start out with the following models … Read more