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get_querystring template tag

A Django Template tag used to construct urls with current querystring parameters. This is based on some code that I've written some years ago. Enjoy.

  • template
  • templatetag
  • querystring
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Decorator @not_login_required

This is a simple django snippet! It is the *opposite of @login_required* decorator for Django views Example **@not_login_required** ``` def login_page(request): ... ```

  • decorator
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Add Extra Headers to Test Client Requests

As Simon Willison mentions in his [Debugging Django](http://simonwillison.net/2008/May/22/debugging/) presentation, using the Test Client in the interpreter can be a great way to take a peek at the raw results from a view. In some cases you may need to add additional headers to the request (for instance a piece of middleware may rely on them). Though it is not mentioned in the reference documentation, a quick peek at the code confirmed my hopes that it would be possible to add data to the request. The Client *get* and *post* methods both accept an **extra** kwargs parameter that allow you to populate the request with additional data.

  • testing
  • request
  • test
  • headers
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Google map on admin address field

Who never wished to have valid address data by showing a little google map with a marker near the address input text ? Using js only it gets quite easy.

  • gmap
  • address
  • googlemap
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Alter Column Lengths of Contrib Apps

If you want to modify the length of a column of a contrib application, you can either modify django (cumbersome) or you can run a post_syncdb signal hook. Related: [Ticket 4748](http://code.djangoproject.com/ticket/4748)

  • signals
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Reset / Send account details email

I needed to create a feature for administrators to create accounts and email the *new account was created* email using a button. Remember to change the default template and subject to match your needs. The code is directly taken from `django.contrib.auth.forms.PasswordResetForm.save()`. Notice that the function raises `ValueError` if the user is missing an email address.

  • users
  • reset-password
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Command to dump data as a python script

This creates a fixture in the form of a python script. Handles: 1. `ForeignKey` and `ManyToManyField`s (using python variables, not IDs) 2. Self-referencing `ForeignKey` (and M2M) fields 3. Sub-classed models 4. `ContentType` fields 5. Recursive references 6. `AutoField`s are excluded 7. Parent models are only included when no other child model links to it There are a few benefits to this: 1. edit script to create 1,000s of generated entries using `for` loops, python modules etc. 2. little drama with model evolution: foreign keys handled naturally without IDs, new and removed columns are ignored The [runscript command by poelzi](http://code.djangoproject.com/ticket/6243), complements this command very nicely! e.g. $ ./manage.py dumpscript appname > scripts/testdata.py $ ./manage.py reset appname $ ./manage.py runscript testdata

  • dump
  • manage.py
  • serialization
  • fixtures
  • migration
  • data
  • schema-evolution
  • management
  • commands
  • command
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Instance partial update

If you're like me, you've got a models with a lot of fields/foreignkeys and often only want to edit a portion of the model in a form. Add this method to your custom form class and use it in place of the save() method.

  • forms
  • model
  • partial
  • updating
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Syntax highlighting for tracebacks in console output

This is hardcoded to use [django-discover-runner](http://pypi.python.org/pypi/django-discover-runner) since that's my main test runner but could easily be adopted to use Django's own test runner. If you're using a terminal that is capable of showing 256 colors use the `Terminal256Formatter` formatter instead. Enabled it with the `TEST_RUNNER` setting: TEST_RUNNER = 'dotted.path.to.highlighted.runner.HighlightedDiscoverRunner' Where `dotted.path.to.highlighted.runner` is the Python import path of the file you saved the runner in.

  • pygments
  • testing
  • test
  • traceback
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Database file storage

Class DatabaseStorage can be used with either FileField or ImageField. It can be used to map filenames to database blobs: so you have to use it with a **special additional table created manually**. The table should contain: *a pk-column for filenames (I think it's better to use the same type that FileField uses: nvarchar(100)) *a blob column (image type for example) *a size column (bigint type). You can't just create blob column in the same table, where you defined FileField, since there is no way to find required row in the save() method. Also size field is required to obtain better perfomance (see size() method). So you can use it with different FileFields and even with different "upload_to" variables used. Thus it implements a kind of root filesystem, where you can define dirs using "upload_to" with FileField and store any files in these dirs. Beware saving file with the same "virtual path" overwrites old file. It uses either settings.DB_FILES_URL or constructor param 'base_url' (@see __init__()) to create urls to files. Base url should be mapped to view that provides access to files (see example in the class doc-string). To store files in the same table, where FileField is defined you have to define your own field and provide extra argument (e.g. pk) to save(). Raw sql is used for all operations. In constractor or in DB_FILES of settings.py () you should specify a dictionary with db_table, fname_column, blob_column, size_column and 'base_url'. For example I just put to the settings.py the following line: DB_FILES = {'db_table': 'FILES', 'fname_column': 'FILE_NAME', 'blob_column': 'BLOB', 'size_column': 'SIZE', 'base_url': 'http://localhost/dbfiles/' }" And use it with ImageField as following: player_photo = models.ImageField(upload_to="player_photos", storage = DatabaseStorage() ) DatabaseStorage class uses your settings.py file to perform custom connection to your database. The reason to use custom connection: http://code.djangoproject.com/ticket/5135 Connection string looks like "cnxn = pyodbc.connect('DRIVER={SQL Server};SERVER=localhost;DATABASE=testdb;UID=me;PWD=pass')" It's based on pyodbc module, so can be used with any database supported by pyodbc. I've tested it with MS Sql Express 2005. Note: It returns special path, which should be mapped to special view, which returns requested file: **View and usage Example:** def image_view(request, filename): import os from django.http import HttpResponse from django.conf import settings from django.utils._os import safe_join from filestorage import DatabaseStorage from django.core.exceptions import ObjectDoesNotExist storage = DatabaseStorage() try: image_file = storage.open(filename, 'rb') file_content = image_file.read() except: filename = 'no_image.gif' path = safe_join(os.path.abspath(settings.MEDIA_ROOT), filename) if not os.path.exists(path): raise ObjectDoesNotExist no_image = open(path, 'rb') file_content = no_image.read() response = HttpResponse(file_content, mimetype="image/jpeg") response['Content-Disposition'] = 'inline; filename=%s'%filename return response **Warning:** *If filename exist, blob will be overwritten, to change this remove get_available_name(self, name), so Storage.get_available_name(self, name) will be used to generate new filename.* For more information see docstrings in the code. Please, drop me a line if you've found a mistake or have a suggestion :)

  • files
  • database
  • storage
  • filestorage
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Generating vCards using VObject

Use this code to generate downloadable [vCard][] objects. See the [VObject docs][1] for more details on the API. [1]: http://vobject.skyhouseconsulting.com/ [vcard]: http://en.wikipedia.org/wiki/VCard

  • vcard
  • view
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Author: pbx
  • 6
  • 14