django

django's .extra(where= clauses are clobbered by table-renaming .filter(foo__in=... subselects

The short of it is, the table names of all queries that are inside a filter get renamed to u0, u1, ..., so my extra where clauses won't know what table to point to. I would love to not have to hand-make all the queries for every way I might subselect on this data, and my current workaround is to turn my extra'd queries into pk values_li...

Uploadify without a models.py

I need to do a multiple upload in my application. I downloaded the django-uploadify and was studying its operation. I have been gradually implementing in my application until I've got. The problem is I need to do multiple upload to a specific user. In a project is not used models.py. What I can not imagine is how a model with the data ...

Reading files and writing to database in django

I have a Django app that opens a file, continuously reads it, and at the same time writes data to a Postgres database. My issue is that whenever I open a file, file = open(filename, 'r') I am unable to also create new things in the database, Message.objects.create_message(sys, msg) That should create a database entry with two str...

How to modify the way a ForeignKey field is rendered in a Django admin page to avoid browser crash?

I have a Customer model which contains a ForeignKey to a Contact model. I have over 100,000 contacts in my DB and when I load the admin page for a specific customer, the dropdown menu for the contact is getting populated with ALL of the contacts in the database. This has recently, due to its shear length, started causing my Firefox to c...

Browser-based MMO best-practice

I am developing an online browser game, based on google maps, with Django backend, and I am getting close to the point where I need to make a decision on how to implement the (backend) timed events - i.e. NPC possession quantity raising (e.g. city population should grow based on some variables - city size, application speed). The possib...

Display custom labels for values in the Django Admin Site

One of my models has a 'status' field which is only ever modified in code. It is an integer from 1 to 6 (although this may change in the future). However, in the Admin site, I would like to display a label for this data. So, instead of displaying '5', I would like it to say 'Error'. This means I would be able to easily filter the object...

django site doesn't see urls.py

I just moved my site to an actual apache server (was developing locally before) and the site can't seem to find the urls.py file. basically what happens is that the homepage works, which is weird in itself considering that if i go to any url, e.g. website/about/, i will get a 404 error with text {'path': u'about/'}. I tried ROOT_URLCONF...

Where should utility functions live in Django?

Where should utility functions live in Django? Functions like custom encrypting/decrypting a number, sending tweets, sending email, verifying object ownership, custom input validation, etc. Repetitive and custom stuff that I use in a number of places in my app. I'm definitely breaking DRY right now. I saw some demos where functions were...

Django, PIP, and Virtualenv

Hi, Got this django project that I assume would run on virtualenv. I installed virtualenv through pip install and created the env but when I try to feed the pip requirements file, I got this: Directory 'tagging' is not installable. File 'setup.py' not found. Storing complete log in /Users/XXXX/.pip/pip.log Here's the entry on the log...

Django Internal Server Error

I'm new at this and stuck. What would cause Django to run without error when I do python manage.py runserver but then throw Internal Server Error when I try to access it through the web? I have another project giving the Congratulations on your first Django-powered page, and I got the same result with the same .wsgi file initially with t...

Creating django objects with a random primary key

Hi guys! I'm working with an API that wants me to generate opaque "reference IDs" for transactions with their API, in other words, unique references that users can't guess or infer in any way. (is 'infer' proper english?) This is what I've hacked together currently: randomRef = randint(0, 99999999999999) while Transaction.objects.filt...

Create an instance that represents the average of multiple instances

I have a Review Model like the one defined below (I removed a bunch of the fields in REVIEW_FIELDS). I want to find the average of a subset of the attributes and populate a ModelForm with the computed information. REVIEW_FIELDS = ['noise'] class Review(models.Model): notes = models.TextField(null=True, blank=True) CHOICES = ((1, ...

Django subclasses having unique IDs

Assuming I have an abstract class ("AbstractClass") and two subclasses ("Subclass1" and "Subclass2"), two separate database tables will be created to hold instances of Subclass1 and Subclass2. These database tables currently number normally, from 1 upwards. Is there a way to ensure the IDs of all implementing subclasses are unique betwe...

Rich text to be stored using django

If csv file has rich text in it. Using csv.reader() can the same format stored in the Mysql database using django and retrieved back to html pages? Thanks.. ...

django file upload

I have created a app which will upload the file at a particular location. How can I read the file uploaded after the model is saved? When I click on the file link on change_field_page it gives page not found. I'm using Django 1.2 and django-admin for this. Here's my models.py: class UploadClass(models.Model): id=models.AutoField(prim...

Does Django message middleware not work with app engine?

Hi All, I am trying to implement the message middleware in my Django App engine project but its giving the an error message like: ImproperlyConfigured: Error importing middleware mediautils.middleware: "No module named messages" I have followed the link http://djangoadvent.com/1.2/messages-rest-us/ to implement it. Is it not possibl...

three table relationship on django

Hey guys, I am trying to do something very basic here with three models: class Car(models.Model): country = models.ForeignKey(Country) company_name = models.CharField(max_length=50) continent = models.CharField(max_length=50) class CountryProfile(models.Model): country = models.ForeignKey(Country) minimum_wage = models....

Add extra information after submitting form

I have the following structure: class FeatureType(models.Model): type = models.CharField(max_length=20) def __unicode__(self): return self.type class Feature(models.Model): name = models.CharField(max_length=50) type = models.ForeignKey(FeatureType) premium = models.BooleanField("Premium Feature", default=F...

Prevent django admin from escaping html

Hi, I'm trying to display image thumbnails in django admin's list_display and I am doing it like this: from django.utils.safestring import mark_safe class PhotoAdmin(admin.ModelAdmin): fields = ('title', 'image',) list_display = ('title', '_get_thumbnail',) def _get_thumbnail(self, obj): return mark_safe(u'<img src...

File upload with django

What is wrong with the following code for file uploading.The request.FILES['file'] looks empty Models: from django.db import models from django import forms class UploadFileForm(forms.Form): title = forms.CharField(max_length=50) file = forms.FileField(label="Your file") Views: def index(request): if request.m...