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Pagination/Filtering Alphabetically

This allows you to create an alphabetical filter for a list of objects; e.g. `Browse by title: A-G H-N O-Z`. See [this entry](http://developer.yahoo.com/ypatterns/pattern.php?pattern=alphafilterlinks) in Yahoo's design pattern library for more info. NamePaginator works like Django's Paginator. You pass in a list of objects and how many you want per letter range ("page"). Then, it will dynamically generate the "pages" so that there are approximately `per_page` objects per page. By dynamically generating the letter ranges, you avoid having too many objects in some letter ranges and too few in some. If your list is heavy on one end of the letter range, there will be more pages for that range. It splits the pages on letter boundaries, so not all the pages will have exactly `per_page` objects. However, it will decide to overflow or underflow depending on which is closer to `per_page`. **NamePaginator Arguments**: `object_list`: A list, dictionary, QuerySet, or something similar. `on`: If you specified a QuerySet, this is the field it will paginate on. In the example below, we're paginating a list of Contact objects, but the `Contact.email` string is what will be used in filtering. `per_page`: How many items you want per page. **Examples:** >>> paginator = NamePaginator(Contacts.objects.all(), \ ... on="email", per_page=10) >>> paginator.num_pages 4 >>> paginator.pages [A, B-R, S-T, U-Z] >>> paginator.count 36 >>> page = paginator.page(2) >>> page 'B-R' >>> page.start_letter 'B' >>> page.end_letter 'R' >>> page.number 2 >>> page.count 8 In your view, you have something like: contact_list = Contacts.objects.all() paginator = NamePaginator(contact_list, \ on="first_name", per_page=25) try: page = int(request.GET.get('page', '1')) except ValueError: page = 1 try: page = paginator.page(page) except (InvalidPage): page = paginator.page(paginator.num_pages) return render_to_response('list.html', {"page": page}) In your template, have something like: {% for object in page.object_list %} ... {% endfor %} <div class="pagination"> Browse by title: {% for p in page.paginator.pages %} {% if p == page %} <span class="selected">{{ page }}</span> {% else %} <a href="?page={{ page.number }}"> {{ page }} </a> {% endif %} {% endfor %} </div> It currently only supports paginating on alphabets (not alphanumeric) and will throw an exception if any of the strings it is paginating on are blank. You can fix either of those shortcomings pretty easily, though.

  • pagination
  • paginator
  • filtering
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reCAPTCHA integration

Integrating [reCAPTCHA](http://recaptcha.net/) with Django. **Warning**: although *remoteip* is used as optional parameter in this snippet, it is likely to become mandatory in the future. Please see [the comment by Jim Garrison](http://www.marcofucci.com/tumblelog/26/jul/2009/integrating-recaptcha-with-django/#comment-262) for more detail. Generic version of [this snippet](http://www.djangosnippets.org/snippets/433/). 1. Register on [reCAPTCHA](http://recaptcha.net/) to get your public/private key pair 2. Add your keys in settings.py 3. Add [recaptcha-client](http://pypi.python.org/pypi/recaptcha-client) to your project 4. Put ReCaptchaField and ReCaptcha widget somewhere (I've used a generic app `marcofucci_utils`) 5. Configure your form More information on my website [marcofucci.com](http://www.marcofucci.com/tumblelog/26/jul/2009/integrating-recaptcha-with-django/).

  • captcha
  • recaptcha
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DualPasswordForm

DualPasswordForm is a simple form that contains two password fields and validation to ensure that the two passwords match. A minimum password length of 7 characters is imposed, but feel free to change that.

  • form
  • password
  • match
  • dual
  • dualpasswordform
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Full-Text Searchable Models

A drop-in module to allow for full-text searchable models with very little effort. Tested with PostgreSQL 8.3, but should work on earlier versions with the tsearch2 module installed.

  • models
  • search
  • full-text
  • tsearch2
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format_thousands

Template filter to format a number so that it's thousands are separated by commas. {{ number|format_thousands }}

  • format
  • string
  • comma
  • decimal
  • number
  • thousands
  • float
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Quantize decimal template filter

Takes a float number (23.456) and uses the decimal.quantize to round it to a fixed exponent. This allows you to specify the exponent precision, along with the rounding method. And is perfect for monetary formatting taking into account precision.

  • filter
  • decimal
  • quantize
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django on tornado

there have been many posts on running django on tornado with static media served by nginx. But for dumb people like me, the whole thing needs to be spelt out. So here is how I succeeded in serving django from a virtual host using nginx and tornado. The key thing to note is that 'root' refers to the **parent** directory of the root and not the full path. Also remember to put in ':' as a line end. Procedure - start the tornado server with the python script on localhost:8888, start nginx. Relax and enjoy your django at the speed of light. Nginx can be got by apt-get or yum, but you need the latest git clone of Tornado - the default tarball does not support django. btw, this install is for FC11 on my laptop - I have done it in production on lenny.

  • nginx
  • tornado
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DownloadView generic class view

Generic class view to abstract out the task of serving up files from within Django. Recommended usage is to combine it with SingleObjectMixin and extend certain methods based on your particular use case. Example usage class Snippet(models.Model): name = models.CharField(max_length = 100) slug = SlugField() code = models.TextField() from django.views.generic.detail import SingleObjectMixin class DownloadSnippetView(SingleObjectMixin, DownloadView): model = Snippet use_xsendfile = False mimetype = 'application/python' def get_contents(self): return self.get_object().code def get_filename(self): return self.get_object().slug + '.py' '''

  • view
  • download
  • class-based-views
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Convert multiple select for m2m to multiple checkboxes in django admin form

This is a javascript to call in the Media class of the ModelAdmin instance for the model, requires some additional css. The goal of such approach is that the add related functionality is supported, and works also with the django-mptt model fields. The new component can support resize functionality, in such case the jquery-ui resizable script is needed. For a complete documentation on this, and how to use it inside your project please visit this [blog post](http://www.abidibo.net/blog/2013/04/10/convert-select-multiple-widget-checkboxes-django-admin-form/)

  • django-admin
  • multiplecheckboxfield
  • multiple-select
  • django-mptt
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remove the annoying "Hold down control..." messages

This function mangles a generated form class to remove the Hold down "Control", or "Command"... messages from the help text. This is really a dirty hack awaiting a proper solution to [Django ticket 9321](http://code.djangoproject.com/ticket/9321). This function can be useful for forms in the admin interface that use custom widgets. Basic usage: class MyModelForm(forms.ModelForm): class Meta: model = MyModel class MyAdmin(admin.ModelAdmin): form = remove_holddown(MyModelForm, ('field1', 'field2'))

  • admin
  • forms
  • hack
  • widget
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