Simple FastCGI authorizer view

This is a basic view for a FastCGI authorizer against the Django auth. The idea is to return either a blank response with REMOTE_USER set on success, a forbidden response for failure, or a redirect to a login page when no user is logged in. I use this view for a Trac instance running on the same (lighttpd) server as Django. lighttpd is set up to use Django as a FastCGI authorizer (using snippet 1149) for the Trac URLs instead of using basic/digest HTTP authentication, so Trac has the same users as Django.

• authenticate
• fcgi
• fastcgi

Sun 11 Jul 2010 Read More

FCKEditor replace all vLargeTextField in admin

If you want to add an fckeditor for every vLargeTextField (the input class used by models.TextField) you can use this javascript. you can load that in all admin pages overriding templates/admin/base_site.html with this: {% extends "admin/base.html" %} {% load i18n %} {% block title %}{{ title }} | {% trans "Administrative Area" %}{% endblock %} {% block branding %} <h1 id="site-name">{% trans "Administrative Area" %}</h1> {% endblock %} {% block nav-global %}{% endblock %} {% block extrahead %}{{ block.super }} <script src="{{media_url}}js/jquery.js" type="text/javascript"></script> <script src="{{media_url}}fckeditor/fckeditor.js" type="text/javascript"></script> <script src="{{media_url}}fckeditor/custom/vTextField.js" type="text/javascript"></script> {% endblock %}

• admin
• textfield
• rich-text-editor
• fckeditor
• vlargtextfield

Sun 11 Jul 2010 Read More

Regex Comma Number

Format Number Based on Regular Expression **Examples** >*{{.1234|regex_comma_number:'%.4f'}} >*'0.1234' >*{{100|regex_comma_number:'%i'}} >*'100' >*{{ 234.5678|regex_comma_number:'%.4f'}} >*'234.5678' >*{{234.5678|regex_comma_number:'$%.4f'}} >*'$234.5678' >*{{1000|regex_comma_number:'%i'}} >*'1,000' >*{{1234.5678|regex_comma_number:'%.4f'}} >*'1,234.5678' >*{{1234.5678|regex_comma_number:'$%.4f'}} >*'$1,234.5678' >*{{1000000|regex_comma_number:'%i'}} >*'1,000,000' >*{{1234567.5678|regex_comma_number:'%.4f'}} >*'1,234,567.5678' >*{{1234567.5678|regex_comma_number:'$%.4f'}} >*'$1,234,567.5678' >*{{-100|regex_comma_number:'%i'}} >*'-100' >*{{-234.5678|regex_comma_number:'%.4f'}} >*-234.5678' >*{{-234.5678|regex_comma_number:'$%.4f'}} >*'$-234.5678' >*{{-1000|regex_comma_number:'%i'}} >*'-1,000' >*{{-1234.5678|regex_comma_number:'%.4f'}} >*'-1,234.5678' >*{{-1234.5678|regex_comma_number:'$%.4f'}} >*'$-1,234.5678' >*{{-1000000|regex_comma_number:'%i'}} >*'-1,000,000' >*{{-1234567.5678|regex_comma_number:'%.4f'}} >*'-1,234,567.5678' >*{{-1234567.5678|regex_comma_number:'$%.4f'}} >*'$-1,234,567.5678'`

• templatetag
• regex
• format
• comma
• number

Sun 11 Jul 2010 Read More

RPN template math

Django's templates don't provide much in the way of arithmetic: there is an "add" filter and that is about it. Even if sub, mult and div filters are implemented, it is difficult to chain filters while preserving some complicated expression, such as ((x+3)4-(2-y)/12.75). However, this expression can be converted into Reverse Polish Notation: x 3 + 4 * 2 y - 12.75 / - which is just a sequence of operations (push-value or apply-operator) and can be chained. To use these filters, first create a new stack for the expression with name|stnew (pass it some locally unique value). To push a number (or template variable) onto the stack, call name|stpush:number (note that you have to tell stpush the name of the stack to push onto). To pop, call name|stpop. To perform an operation, call name|st[add,sub,mult,div,mod]:number. All numbers are integers if they look like integers, or floats otherwise (integers are turned into floats upon division if they need to be). All of these functions return the name of the stack so that they can be chained. When the calculation is finished (i.e. the answer is at the bottom of the stack) call name|stget to retrieve it. Example (this was used to calculate an inline CSS value: `left: {{ forloop.counter|stnew|stpush:res.stwkday|stpush:"9.35"|stmult|stpush:res.get_item_left|stpush:"2.75"|stadd|stadd|stget }}em;`

• template
• filter
• math
• arithmetic
• rpn
• reverse-polish-notation

Sun 11 Jul 2010 Read More

urlquote() and urlencode() in one method

I think this method is handy, since you don't need to remember if you need urlquote or urlencode. It does both and adds a question mark between the path and the get parameters, if later are present. And it works around a bug in Django: MultiValueDicts (request.GET, request.POST) are handled correctly. Related: [http://code.djangoproject.com/ticket/9089](http://code.djangoproject.com/ticket/9089)

• urlquote
• urlencode

Sun 11 Jul 2010 Read More

django-pyodbc MoneyField

This is a very small, simple piece of code, but essential for using fields of type 'money' on MS SQL Server, through FreeTDS. This took me quite some time to hunt down, as get_placeholder() is in fact an undocumented feature. **Example:** class MyModel(models.Model): price = MoneyField()

• money
• convert
• pyodbc
• django-pyodbc

Sun 11 Jul 2010 Read More

ceil time entry to nearest quarter hour

belongs in a model with datetimefields "end_time" and "start_time" (change as needed) returns float rounded to the next highest quarter hour

• time
• time-logging
• time-formatting

Sun 11 Jul 2010 Read More

Rails Style Controller

Just a quick hack for a Controller style pattern. Similar to the approach taken in django.contrib.admin views things this breaks: 1. {% url %} and reverse() 2. validation provided by regex urlpatterns

• python
• controller
• rubyonrails

Sun 11 Jul 2010 Read More

update-django: Update your django git branches.

This is the (revamped) bash script I use to keep my git branches up-to-date with SVN to make my life a lot easier, just save it in a text file and read the instructions at the top! Hope it's useful to somebody else than me ;)

• bash
• merge
• update
• svn
• git

Sun 11 Jul 2010 Read More

extends_default

Works exactly like the standard "extends" tag but enables one to fallback on a default template. This tag is LIMITED, as it falls back to the next template with the same name that DOES NOT contain "extends_default" (does NOT simulate full inheritance, just a single level). A partial solution to problems like http://jeffcroft.com/blog/2008/aug/05/default-templates-django/. MIT licensed.

• template
• templatetag
• inheritance
• default

Sun 11 Jul 2010 Read More

Automatic graph of your database structure

This script generates an [GraphViz](http://www.graphviz.org/) graph of your database structure from your django models. See the usage if the file underneath the license.

• graph
• database
• graphviz
• automated

Sun 11 Jul 2010 Read More

MarkupTextField

I updated [MarkdownTextField](http://www.djangosnippets.org/snippets/882/) to have some choices in markup. It currently support for Markdown, Textile, Plain Text, and Plain HTML. It will add `%s_html` for the complied HTML and `%s_markup_choices` for a drop down of markup choices. Usage: class MyModel(models.Model): description = MarkupTextField()

• model
• markup
• markdown
• textile
• field

Sun 11 Jul 2010 Read More

Textile Widget

A Textarea widget which appends basic Textile formating instructions in the same way Basecamp's Writboard product displays some basic helper markup alongside the edit area.

• textile
• widget

Sun 11 Jul 2010 Read More

Securely Signed S3 Links With Expiration

I couldn't find a Python implementation of this, so I threw this class together real quick. This will let you share "private" files on S3 via a signed request. It will also have an expiration on the link, so it is only valid until a certain time period. Example Usage: s3 = SecureS3('AWS_ACCESS_KEY', 'AWS_SECRET_ACCESS_KEY') s3.get_auth_link('your_bucket', 'your_file') That would return your secure link. eg, http://your_bucket.s3.amazonaws.com/your_file?AWSAccessKeyId=AWS_ACCESS_KEY&Expires=1226198694&Signature=IC5ifWgiuOZ1IcWXRltHoETYP1A%3D

• s3
• secure

Sun 11 Jul 2010 Read More

Url persistance of GET variables

I'm using Django 0.96 for a project, and the url tag does not have all the capabilities I need. I want a way to persist all or some of the GET parameters between requests. I also want a way to add to the current url a list of extra parameters, or nullify certain parameters. In this snippet I am defining 2 tags ... link_persist and link_add. It only works with Django 0.96, as the API changed ... but maybe a good soul can fix it for 1.0, as I haven't had any time available. A tip for usage: if you specify a parameter as being the empty string, or None, the parameter will be removed from the link. When you specify a parameter already available in GET, it will replace it.

• get
• url
• link
• persistance

Sun 11 Jul 2010 Read More