Convert LaTeX templates to various output formats

**The code is a bit messy and may include bugs ;-) Anyway, I want to clean it up and add features (see below).** The `process_latex()` function will read the given template, render it with a custom context and convert it into the desired output format by running it through pdflatex. Depending on the `outfile` parameter, the output will either be returned (for a response object) or written to the path specified in `outfile` (useful for `save()` in models which generate static, unique files). **TODO** * Error handling in case pdflatex breaks (non-zero return value) * Optionally returning a HttpResponse with the correct mimetype and Content-Disposition set to attachement and an appropriate filename * RequestContext instead of Context (passing the Context object instead of a dict) **CREDITS** Credits also go to ronny for the names dict :-P

• template
• django
• pdf
• dvi
• png
• latex
• pdflatex

Wed 05 Jan 2011 Read More

Fix for the bad behaviour of GenericForeignKey field

I don't know if you noticed but GenericForeignKey behaves badly in some situations. Particularly if you assign a not yet saved object (without pk) to this field then you save this object the fk_field does not get updated (even upon saving the model)- it's updated only upon assigning object to the field. So you have to save the related object prior to even **assigning** it to this field. It's get even more apparent when you have null=True on the fk/ct_fields, because then the null constrains won't stop you from saving an invalid object. By invalid I mean an object (based on a model with GFK field) which has ct_field set but fk_field=None. Maybe this problem is irrelevant in most use case scenarios but this behaviour certainly isn't logical and can introduce silent bugs to your code.

• genericforeignkey
• contenttypes

Mon 03 Jan 2011 Read More

Non-Javascript select list navigator

If you need a simple select list (picklist) containing all site categories (or some other taxonomic group) and don't want to depend on Javascript, here's how to build a simple category navigator in Django, using HttpResponseRedirect.

• form
• select
• picklist

Mon 03 Jan 2011 Read More

orm_tools

This module contains classes that add new behavior to Django's ORM. Classes include: **Session** * Forces QuerySet objects to return identical instances when objects with the same primary key are queried. * Similar to [SQLAlchemy Session](http://www.sqlalchemy.org/docs/orm/session.html) **GraphSaver** * Save entire object graphs at once. * Automatically detects object dependencies and saves them in the correct order. **Collection** * Easier one-to-many relationships. Instructions and more information on [limscoder.com](http://www.limscoder.com/2011/01/django-orm-tools.html).

• session
• db
• orm

Sun 02 Jan 2011 Read More

Dojo Helper

This module contains functions and classes that help integrate the Dojo Toolkit javascript library with Django. Supports defining theme, stylesheets, required modules, and addOnLoad functions from Django. Django form fields can be instrumented to be instantiated as Dijit form objects programmatically. Full instructions on [limscoder.com](http://www.limscoder.com/2010/04/django-dojo.html).

• ajax
• javascript
• dojo

Sun 02 Jan 2011 Read More

Django Database Migration Management Script

Script to help manage database migrations. Explanation and background can be found in blog post at [paltman.com](http://paltman.com/2008/07/03/managing-database-changes-in-django/).

• database
• utility

Tue 28 Dec 2010 Read More

prevent GET or POST requests

This will return HTTP 405 if request was not POSTed. same way you can forbide POST request, change 'POST' to 'GET' Decorators provided for your convenience.

• view
• request
• post

Mon 27 Dec 2010 Read More

Variable inspect filter

This module has two template filters allowing you to dump any template variable. Special handling for object instances. Pretty output. Usage: {% load dumper %} ... <pre>{{ var|rawdump }}</pre> or {% load dumper %} ... {{ var2|dump }} How to install: As usual, put into `<your-proj>/<any-app>/templatetags/dumper.py`.

• template
• filter
• dump
• variable
• inspect

Sun 26 Dec 2010 Read More

Hidden Forms

Have your forms descend from this BaseForm if you need to be able to render a valid form as hidden fields for re-submission, e.g. when showing a preview of something generated based on the form's contents. Custom form example: >>> from django import newforms as forms >>> class MyForm(HiddenBaseForm, forms.Form): ... some_field = forms.CharField() ... >>> f = MyForm({'some_field': 'test'}) >>> f.as_hidden() u'<input type="hidden" name="some_field" value="test" id="id_some_field" />' With `form_for_model`: SomeForm = forms.form_for_model(MyModel, form=HiddenBaseForm)

• newforms
• form
• baseform
• hidden

Sun 26 Dec 2010 Read More

MarkdownTextField

A [common pattern in Django](http://code.djangoproject.com/wiki/UsingMarkup) is to create a TextField intended for Markdown text (i.e. description) and a companion non-editable TextField for storing the HTML version (i.e. description_html), so the Markdown converter need not be run for every page view. This snippet is a custom field which encapsulates this pattern in a single field which can automatically create and update its companion HTML field. Usage: class MyModel(models.Model): description = MarkdownTextField()

• model
• markdown
• field

Sun 26 Dec 2010 Read More

TwitterBackend

TwitterBackend is the twitter authentication backend. This backend makes use of OAuth based "Sign-in with Twitter" Configure your settings.py as per [Django - Specifying Authentication Backends](http://docs.djangoproject.com/en/dev/topics/auth/#specifying-authentication-backends)

• django
• authentication
• python
• backend
• twitter
• oauth

Sat 25 Dec 2010 Read More

model instance to sql insert statement

This function will take a model instance and return an insert statement for it. I use it for extracting a subset of my production data so that I can reproduce problems in a local environment. The quoting is for mysql, you may have to change it depending on your db backend. Also, it assumes the 'default' database.

• sql
• model
• db

Fri 24 Dec 2010 Read More

cleat_list

Clear list from unwanted elements, within django template.

• template
• filter
• list
• clear

Thu 23 Dec 2010 Read More

Set Template Tag

Add a value to the context for easy access and for access from include templates. NOTE: This tag is composed from Django ticket: http://code.djangoproject.com/ticket/1322

• tag

Thu 23 Dec 2010 Read More

EmailListField for Django

A simple Django form field which validates a list of emails. [See this at my blog](http://sciyoshi.com/blog/2009/aug/08/emaillistfield-django/)

• fields
• forms
• email
• form
• field
• email-list

Wed 22 Dec 2010 Read More