CharField powered Tags with ChoiceField widget.

Shell example: >>> pprint.pprint(settings.FORUM_TAGS) ((u'x11', 'Xorg'), (u'pacman', 'Pacman'), (u'aur', 'AUR'), (u'abs', 'ABS'), (u'howto', 'HOWTO'), (u'instalacja', 'Instalacja'), (u'offtopic', 'Offtopic')) >>> t = Thread.objects.all()[0] >>> pprint.pprint(t.tags) [{'slug': u'pacman', 'title': 'Pacman'}, {'slug': u'abs', 'title': 'ABS'}, {'slug': u'howto', 'title': 'HOWTO'}, {'slug': u'instalacja', 'title': 'Instalacja'}, {'slug': u'offtopic', 'title': 'Offtopic'}] >>> t.tags = [{'slug': 'abs'}, {'slug': 'howto'} >>> t.save() >>> t = Thread.objects.get(pk=t.pk) >>> pprint.pprint(t.tags) [{'slug': u'abs', 'title': 'ABS'}, {'slug': u'howto', 'title': 'HOWTO'}] >>> t.tags = ['Offtopic', 'HOWTO'] >>> t.save() >>> t = Thread.objects.get(pk=t.pk) >>> pprint.pprint(t.tags) [{'slug': u'howto', 'title': 'HOWTO'}, {'slug': u'offtopic', 'title': 'Offtopic'}]

• tag
• forms
• field
• selectmultiple
• checbox

Sun 11 Jul 2010 Read More

typo_comparison

This is simple validation weather a string is close enough to what we want. First param is keyword we are comparing to Second is user's input and third is tolerance level. Its very rudimentary. I have my mind fixed upon some imperfections. I am trying to make it good for human like(crazy keyboard) error.

• comparison
• errors
• typo
• validate

Sun 11 Jul 2010 Read More

Auto-rename duplicate fields

This is useful to run before you add a unique key to a character field that has duplicates in it. It just adds numbers to the end of the contents, so they will be unique. It takes a model class and a field name. The model class can be a South fake orm object, so this can be used inside data migrations.

• rename
• duplicate
• south
• unique-key

Sun 11 Jul 2010 Read More

Template Filter: Add indentation

Template filter to add the given number of tabs to the beginning of each line. Useful for keeping markup pretty, plays well with Markdown. Usage: {{ content|indent:"2" }} {{ content|markdown|indent:"2" }}

• filter
• markup
• pretty
• indent
• indentation

Sun 11 Jul 2010 Read More

Middleware to reload translation for each request

This will reload the translation file for every request if you add it as a middleware in settings.MIDDLEWARE_CLASSES.

• middleware
• i18n
• cache
• reload
• translation
• reset
• rosetta

Sun 11 Jul 2010 Read More

Persistent connection to PostgreSQL database

Hi, I made some small custom psycopg2 backend that implements persistent connection using global variable. With this I was able to improve the amout of requests per second from 350 to 1600 (on very simple page with few selects) Just save it in the file called base.py in any directory (e.g. postgresql_psycopg2_persistent) and set in settings DATABASE_ENGINE to projectname.postgresql_psycopg2_persistent This code is threadsafe, however because python don't use multiple processors with threads you won't get bit performance boost with this one. I really recommend using it in daemon mode. In apache mod_wsgi just set processes=8 threads=1

• database
• connection
• persistent

Sun 11 Jul 2010 Read More

Fix duplicate first page of paginated results

Search engines might conclude there's duplicate content if `/some_view/` and `/some_view/?page=1` returns the same results. This middleware redirects `?page=1` to the URL without the page parameter. You can set the name of the parameter in settings.py as `PAGE_VAR`. See [here](http://www.muhuk.com/2009/08/a-civilized-way-display-lots-of-data/) for more details.

• middleware
• pagination
• seo
• paginate

Sun 11 Jul 2010 Read More

Save a model using an arbitrary db connection

This function lets you save an instance of a model to another database based on a connection argument. Useful when doing data migrations across databases. Connection is anything that would work as a django.db.connection I'm not sure if this handles proxy models or model inheritance properly, though.

• multi-db
• connection

Sun 11 Jul 2010 Read More

Arbitrary length formset

A formset class where you can add forms as you discover the need within your code. There is also the ability to add ManagmentForm fields. If you ever found yourself in a situation where 1) you have repeated forms that need to be displayed in different locations, or 2) if you find the application logic works better if you add forms as you discover you need them, this code will help you out. Below is pseudo code based on a real implementation I used. Each form had a save button and the SELECTED_PAYMENT field was set through JavaScript. It is very difficult to use JavaScript with repeated forms, without using a formset. from myProject.myApp import myFormsUtils from myProject.myApp.forms import PaymentForm SELECTED_PAYMENT = 'SELECTED_PAYMENT' # extra_fields format: {Field name: (Field type, Initial value)} l_extra_fields = {SELECTED_PAYMENT: (forms.IntegerField, -1)} PaymentFormSetType = myFormsUtils.formset_factory(PaymentForm, extra=0, extra_fields=l_extra_fields) if request.method == 'POST': paymentFormSet = PaymentFormSetType(data=request.POST) if paymentFormSet.is_valid(): li_curFormIdx = pagaFormSet.management_form.cleaned_data[SELECTED_PAYMENT] paymntForm = paymentFormSet.forms[li_curFormIdx] ... do stuff ... # To generate the formset paymentFormSet = PagamentoFormSetType() # You can re-add a form retrieved (as in the one above) l_form = paymentFormSet.add_form(paymntForm) # Or use the add function just like creating a new form l_form = paymentFormSet.add_form(personID=argPersonID, propID=argPropID, year=argYr, amt=lc_Amt) I then stored the `l_form` variables above directly into a unique Context structure and displayed them each individually in my template. Of course this also meant that I also had to output the `paymentFormSet.management_form` explicitly within my template. EDIT 09-11-2009: Modified the initial_form_count() method to properly handle initial form values in conjunction with dynamically added forms.

• form
• formset
• factory
• arbitrary-length

Sun 11 Jul 2010 Read More

Get object/list or None

1. Function - get_obj_or_none Returns an object or a None Value 2. Function - get_list_or_none Returns a list object or None Value

• "get_obj_or_none"
• "get_list_or_none"

Sun 11 Jul 2010 Read More

ScriptPrefixMiddleware

Adds http://hostname or https://hostname before every URL generated by a Django url function. **Example:** Normally, something like YourModel().get_absolute_url() would return `/2009/09/02/slug`. However, this is not an absolute URL, because it does not include an HTTP schema or host. With this middleware, YourModel().get_absolute_url() will return `http://yourdomain.com/2009/09/02/slug`. This will also work for calls to reverse() or the {% url %} template tag. **Installation:** Drop this code into yourproject/middleware/scriptprefix.py. **Usage:** In your settings.py, add: MIDDLEWARE_CLASSES = ( # ... 'yourproject.middleware.scriptprefix.ScriptPrefixMiddleware', # ... )

• url
• domain
• get_absolute_url
• host
• set_script_prefix

Sun 11 Jul 2010 Read More

russian pluralize filter

it works like an original "pluralize" filter, but it need argument with 3 parts, splitted by comma.

• filter
• russian
• pluralize

Sun 11 Jul 2010 Read More

Conditional Caching

This trick is for caching a view only if it passes some condition, for example, if there are more than zero items in a list. The same methodology could be used for conditional applying of other decorators.

• views
• cache
• decorators

Sun 11 Jul 2010 Read More

Optimized humanize naturalday filter

In Django humanize naturalday filter, you could not get the time part since a programming issue, If you apply it like: {% load humanize %} {{ response.date_submitted|naturalday:"Y/n/j H:i" }} You can get 'today', 'yesterday', 'tomorrow' or empty, but you can not get such as '2009/9/10 11:56' So I change it like above code. Now you can get 'today', 'yesterday', 'tomorrow' or '2009/9/10 11:56'

• original-bug-fixes

Sun 11 Jul 2010 Read More

Commit on success unless managed decorator

This decorator is to make it's decorated function to commit the transaction on success (rollback otherwise) unless the transactions are being already managed.

• decorator
• transaction

Sun 11 Jul 2010 Read More