Standard memcache client uses pickle as a serialization format. It can be handy to use json, especially when another component (e.g. backend) doesn't know pickle, but json yes.
Rename apache (or any) processes to be easily identified from ps output.
Other approach of making middleware. Advantage of is to specify, which middleware is used for which view function and in what order. Middleware function gets all arguments, that are passed to view function. **Example usage** @RequestMiddleware def print_params_middleware(request, *args, **kwargs): print 'GET params:', request.GET @ResponseMiddleware def modify_headers_middleware(request, response, *args, **kwargs): response['Content-Type'] = 'text/html' @ExceptionMiddleware def catch_error_middleware(request, e, *args, **kwargs): return HttpResponse('catched error %s' % e ) @modify_headers_middleware @catch_error_middleware @print_params_middleware def some_view(request, *args, **kwargs): print 'someview' return HttpResponse()
When you neeed to do redirect and request object is not available, you can do it with exception. Put exception handler somewhere request is available, for example to middleware or ModelAdmin. Raise exception, where request is not available.
Consider following models: class Product(models.Model): code = modeld.CharField() class ProductTrans(models.Model): product = models.ForeignKey('Product') language = models.ChoiceField(choices=settings.LANGUAGES) title = models.ChaField() description = models.ChaField() With this snippet is possible search through all translations of product at the same time (using string concatenation in trigger): Product.objects.extra( where = ['product_product.fulltext @@ to_tsquery(%s)'], params = [ 'someproduct' ] ) For PostgreSQL >=8.4 only.
Use this, if you want to "activate" menu items by URL. Typical usage is with CSS class 'active'.
This class emulates query lookups to behave as numeric operators. Inspired by SQLAlchemy. User.objects.filter( X('username') == 'diverman' ) User.objects.filter( X('username') != 'diverman' ) User.objects.filter( X('pk') > 10 ) User.objects.filter( X('pk') >= 10 ) User.objects.filter( X('pk') < 10 ) User.objects.filter( X('pk') <= 10 ) User.objects.filter( X('username') % 'iverma' ) User.objects.filter( X('username') << 'diver' ) User.objects.filter( X('username') >> 'man' ) User.objects.filter( X('pk') | (1, 2, 3) )
This code adds new field to Django user model. It must be executed early as much as possible, so put this code to __init__.py of some application.
Sometime may be useful to disable the HTML output from formfield to template.
This is a XML-RPC server, that uses arguments in URLs and every dispatcher instance is prepared in memory during webserver run. It's good, for example, for securing XML-RPC server with hashed strings and there are a lot of similar use cases. Usage: from xmlrpclib import ServerProxy server = ServerProxy('http://example.com/xmlr-rpc/%s/' % something, allow_none=True) server.do_something(*args)
FieldStack simplifies forms template rendering. This is enhanced version of snippet [1786](http://djangosnippets.org/snippets/1786/)
This custom model field is a variant of NullBooleanField, that stores only True and None (NULL) values. False is stored as NULL. It's usefull for special purposes like unique/unique_together. One small problem is here, that False is not lookuped as None. This snippets is a response to [1830](http://www.djangosnippets.org/snippets/1830/)
This templatetag evaluates Python expressions including built-in functions, lambda functions etc... Use with caution.
This snippet was inspired by [1783](http://www.djangosnippets.org/snippets/1783/). It allows simply create groups of fields for template rendering.
You can use `UrlModel` to provide URL functionality to any instance of any model and any language (language support can be removed from this). Each model must have own view method, that returns HttpResponse. I was inspired by Flatpages. It is useful for small sites and static pages. `class Page(UrlModel): text = models.TextField() def view(self, request) # do something here return HttpResponse(...)`