Pagination which preserves additional GET parameters
Using this snippet you can easily create Pagination that preserves any additional GET paremters you may be using (for example for search module)
- pagination
Snippet List
Get derived model instance
Get derived model without storing their names or content types in databases. You write only one line, it expands into only one SQL-query (with many LEFT OUTER JOIN's). Model definition example: class BaseModel(models.Model): foo = models.IntegerField(null=True) derived = DerivedManager() class FirstChild(BaseModel): bar = models.IntegerField(null=True) class SecondChild(BaseModel): baz = models.IntegerField(null=True) How to use: >>> f = FirstChild.objects.create() >>> s = SecondChild.objects.create() >>> print list(BaseModel.objects.all() [<BaseModel object 1>, <BaseModel object 2>] >>> print list(BaseModel.derived.all() [<FirstChild object 1>, <SecondChild object 2>] >>> print BaseModel.derived.get(pk=s.pk) <SecondChild object 2>
- models
- orm
- inheritance
"Autoconnect" model decorator, easy pre_save and post_save signal connection
This method allows you to define pre_save and post_save signal connections for your decorators in a little more clean way. Instead of calling `pre_save.connect(some_func, sender=MyModel)`, or perhaps `pre_save.connect(MyModel.some_static_func, sender=MyModel)`, you can simply define the pre_save method right on your model. The @autoconnect decorator will look for pre_save and post_save methods, and will convert them to static methods, with "self" being the instance of the model.
- pre_save
- post_save
- signal-connect
Month / Year dropdown widget Python 3 compatible
Python 3 version of https://djangosnippets.org/snippets/1688/
- date
- year
- credit-card
- month
- python-3
Ellipsis paginator decorator with first and last two items
Use this template tag to get a paginator showing the first and last two pages w/ adjacent pages using ellipsis. The `page` parameter is a page of a `Paginator` (typically the first but you can use whichever you want). In case of 50 pages, while being on the 40th, it'll give you the following iterable of `int`s (with `settings.PAGINATOR_ADJACENT_PAGES = 2`): `(1, 2, 38, 39, 40, 41, 42, 49, 50) ` You get the idea.
- decorator
- paginator
- ellipsis
ExcelResponse2
A function extends of Tarken's django-excel-response django-excel-response 1、djangosnippets - http://djangosnippets.org/snippets/1151/ 2、pypi - https://pypi.python.org/pypi/django-excel-response/1.0 When using Tarken's django-excel-response. We find that Chinese is messed code when we open .xls in Mac OS. As discussed in http://segmentfault.com/q/1010000000095546. We realize django-excel-response2 Based on Tarken's django-excel-response to solve this problem By adding a Param named font to set font.
- output
- httpresponse
- excel
- cvs
PaginationMixin: Get a controlled paginate_by value from the querystring or use a default.
What the docstring says. To not use some functionality, e.g. managing the value in the User's Profile model, delete the corresponding lines (when getting the page_size and when saving it. Add the Mixin before the View class. e.g.: `class ItemList(PaginationMixin, generic.ListView):`
- pagination
- paginator
- mixin
Calendar template-tag
Simple template tag to show a calendar. I use it to display events (which is a model with a start_date and end_date attribute. You probably should change this according to your needs.
- template
- tag
- calendar
list django template's inheritance hierarchy
list django template's inheritance hierarchy Example: DJANGO_SETTINGS_MODULE=mysite.settings django-templates-tree.py base.html
- template
- tree
django form template with bootstrap
## required * `{% load trans%}`before using this snippets * Add this [template filter](https://djangosnippets.org/snippets/2253/) to your custom templatetags and load it before using this snippets * Bootstrap framework
Turn off django 1.7 migrations
Useful snippet for everyone who wants turn off django 1.7 migrations for example for unittesting or who wants create database with "syncdb" command.
- migrations
Reset cache between tests
I don't understand why the cache is accumulated between the tests. I thought one of the axioms of unit testing is that the tests should not affect each other. Couldn't find anything that explains why it's done this way but it seems a bit strange. Anybody know if there's a reason or is this a reason for me to upload a patch to Django code?
- cache
- tests
- locmem
- setup
Excel Export with xlwt
how to generate a (real) excel file as an HTTP response with xlwt
- excel
- xlwt
Make HTML5 appcache manifest slice work with django-compress compressed files
I needed to make appcache for my application which used django-compress for JS and CSS compression. This is, how I solved the problem with putting compressed files into the manifest. I went for offline compression (with `COMPRESS_OFFLINE=True`). This snippet shows code of command file (put it in `apps/cyklomapa/management/commands/compress_create_manifest.py`), which creates `compress_cache_manifest.txt` file in my templates. Then I just use `{% include "compress_cache_manifest.txt" %}` in my appcache template.
- html5
- django-compress
- appcache
Mutiple forms on Form wizard
Wraps many Form subclases in order to get a form wizard to treat them as one. Many Forms will use one step. **Example:** `class LanguageVerifiedHumanForm(MultipleForms): base_forms = [ ('language_form', LanguageForm), ('verified_human_form', VerifiedHumanForm) ]` `class NewGuideWizard(SessionWizardView): form_list = [ ('guide_form', GuideForm), ('multi_form', LanguageVerifiedHumanForm), ]`
- multiple
- forms
- wizard
- multi
- form-wizard