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Get the Django decorator/middleware cache key for given URL

This mimicks the keys used internally by the @cache_page decorators and site-wide CacheMiddleware. Now you can poke them, prod them, delete them, do what you like with them (eg, delete after you update some content and you want a specific URL refreshed).

  • cache
  • key
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Author: s29
  • 2
  • 2

Get Client IP Behind Proxy

If your application server is behind a proxy, `request.META["REMOTE_ADDR"]` will likely return the proxy server's IP, not the client's IP. The proxy server will usually provide the client's IP in the `HTTP_X_FORWARDED_FOR` header. This util function checks both headers. I use it behind Amazon's Elastic Load Balancer (ELB).

  • request
  • ip
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easy signal registration

Django signals can live anywhere you like. I like them in *app/signals.py* file. This snippet imports signal modules from all installed apps.

  • registration
  • signal
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Send templated email with text | html | optional files

Use this to send emails to your users, takes one template and renders it as html or text as needed. Credits to """ Jutda Helpdesk - A Django powered ticket tracker for small enterprise. (c) Copyright 2008 Jutda. All Rights Reserved. See LICENSE for details. lib.py - Common functions (eg multipart e-mail) """ MIT licence I only removed the specific project parts and made it general to use. The original project repository https://github.com/rossp/django-helpdesk/

  • template
  • email
  • function
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Generic admin action export selected rows to excel

Based on [http://djangosnippets.org/snippets/1697/](http://djangosnippets.org/snippets/1697/) but improved with multiline fields, and unicode chars. Also it generates an xls file, not a csv one. Requires, pyExcelerator *Usage:* Add the code to your project, e.g. a file called actions.py in the project root. Register the action in your apps admin.py: from myproject.actions import export_as_xls class MyAdmin(admin.ModelAdmin): actions = [export_as_xls]

  • export
  • admin-actions
  • xls
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Password Validation - Require Letters and Numbers - no regex

Simple password validation for user registration - requires that password be 7 or more characters and contain both letters and numbers. Original validation with regex approach developed by kurtis. Optimized no-regex version based on code from watchedman ran as fast or significantly faster on all systems on which we tested it.

  • registration
  • model
  • regex
  • user
  • validation
  • form
  • password
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Decorating URL includes

Apply a decorator to every urlpattern and URLconf module returned by Django's include() method . This allows you use a decorator on any number of views without having to decorate each one individually. The use case here is wrapping all of the Django Admin with a superuser decorator. This is code that's better left alone where we can't actually go in and decorate the Admin views and urlpatterns manually. It's also almost guaranteed the Admin will include() other URL files. So the added bonus is all the INSTALLED_APPS that have their admin.py files registered by admin.autodiscover() will be decorated automatically as well. This snippet is greatly inspired by [@miracle2k](http://djangosnippets.org/users/miracle2k/)'s excellent [#532](http://djangosnippets.org/snippets/532/). In the comments there @timbroder offers a modification to decorate includes but I think this is cleaner, simpler code and not subject to changes in the Django base code driving _get_url_patterns().

  • urls
  • urlconf
  • decorator
  • urlpatterns
  • resolve
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keeping filter states after edits

When saving an edit to an object from a filtered list view you are, by default, returned to list view without any of your filters applied. This solves that problem, keeping the filtered view in a session variable until you reach a point where the session key is deleted. The solution presented here is hugely based off of other's work with most of the solution gained from: [Admin: return to change_list with filter and pagination applied](http://djangosnippets.org/snippets/2415/ "Admin: return to change_list with filter and pagination applied") This solution offered the best approach in our mind over the others listed here on snippets since the solution didn't require changes to template code...this is completely self contained within your own admin.py files. The advantage to our solution over the above linked solution is that under different use cases the user may or may not be redirected to the filtered list_view. For example, if you edit an object and click the save and continue button, then you would lose the filter when you finally finished editing the object and clicked save. Added on here is a delete of the session key when users add objects, the reasoning we're going this route is we don't want to return users to filtered views when they just added a new object. Your mileage may vary and if so, it's easy enough to fit your own needs. HTHs

  • filter
  • admin
  • change_list
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Cache view by user (and anonymous)

Use this decorator in your views to cache HttpResponse per user, so each user has his own cache, instead of a shared one as `from django.views.decorators.cache.cache_page` does. Add this to use: from somewhere import cache_per_user @cache_per_user(ttl=3600, cache_post=False) def my_view(request): return HttpResponse("LOL %s"%(request.user)) All documentation inside the decorator are in brazilian portuguese, feel free to translate to english

  • views
  • cache
  • decorator
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Load File From URL Widget

Rather simple usage, modelforms/in the admin: class CustomAdminForm(forms.ModelForm): class Meta: model = Something widgets = { 'image': URLFileInput(default_exts=[".png", ".gif", ".jpg"]), } class SomethingAdmin(admin.ModelAdmin): form = CustomAdminForm admin.site.register(Something, SomethingAdmin) Basically, this will pull the image from the URL instead of only pulling it from your harddrive for upload. Also accepts optional default_exts argument which limits the file types. Defaults to images.

  • imagefield
  • filefield
  • urlfield
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filter for simplifying creating data URI´s

This filter will return data URI for given file, for more info go to: [wikipedia](http://en.wikipedia.org/wiki/Data_URI_scheme) Sample Usage: ` <img src="{{ "/home/visgean/index.png"|dataURI }}"> ` will be filtered into: ` <img src="data:image/png;base64,iVBORw0..."> ` This is good for small images.

  • filter
  • mime
  • uri
  • data URI
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Class based view decorator

Converts a passed decorator to one that can be applied to a class based view (ie. automatically decorates dispatch). This means no more overriding dispatch for every view / request method you want to apply decorators to. Works in Django 1.3 but I suspect it probably works in 1.2 as well.

  • django
  • generic-views
  • decorator
  • class-based-views
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Generic model filter from request GET data

You just use standart django query terms, for example: <form> <input class="field_text filter_from" type="text" name="cost__gte" placeholder="from" value="{% if request.GET.cost__gte %}{{ request.GET.cost__gte }}{% endif %}"> <input class="field_text filter_to" type="text" name="cost__lte" placeholder="to" value="{% if request.GET.cost__lte %}{{ request.GET.cost__lte }}{% endif %}"> </form> model: class Object(models.Model): cost = models.IntergerField() objects = ObjectManager()

  • filter
  • forms
  • queryset
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LoginRequired class-based view decorator

Apply the `login_required` decorator to all the handlers in a class-based view that delegate to `cls.dispatch`. Optional arguments: * redirect_field_name = `REDIRECT_FIELD_NAME` * login_url = `None` See the documentation for the [`login_required`](https://docs.djangoproject.com/en/dev/topics/auth/#the-login-required-decorator) method for more information about the keyword arguments. Usage: @LoginRequired class MyListView (ListView): ...

  • view
  • decorator
  • class
  • login_required
  • class-decorator
  • class-based-views
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