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
Snippet List
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
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
Initial values for new items in admin
Example: class NewsAdmin(InitialFieldsMixin, admin.ModelAdmin): initial = {'author_name': lambda self, request, obj, **kwargs: request.user}
- admin
TemplateForm
This a mixin that can be used to render forms from predefined templates instead of using .as_table / .as_p / .as_ul
- template
- form
Render Decorator
Simple decorator to render an html template or return a json response. The view must return a dict object. Usage example: @render('page.html') def a_view(request): #do something return {'key': 'value'}
- render
- decorator
Django Uri Param Generator
This is a simple URI Querystring generator that can be used with Django for generating URI Querystring and preserving the current Currently working to port into a template tag to allow {% urlgen page|5 %} {% urlgen page 5 %} {% urlgen page,5 %} OR {% urlgen sort name display all %} etc..
- pagination
- url
- uri
- djangourl
Interactive debugger and other Paste niceties
runserver with extra development tools: 1. interactive debugger that pops up automatically if an exception occurs, courtesy of [Werkzeug](http://werkzeug.pocoo.org/documentation/dev/debug.html#using-the-debugger) 2. logging of print statements directly into HTML (div float), courtesy of [Paste](http://pythonpaste.org/modules/debug.prints.html). Credits: [piranha.org.ua](http://piranha.org.ua/)
- django
- debugging
- paste
- wsgi
- werkzeug
ContentType Form
When working with the ContentType model there are generally two issues. 1. Models are listed in the table but not imported. 2. Unicode only returns model not application so being able to select a a app/model is sometimes difficult when to applications have a model with the same name. This snippet gets a listing of imported models and creates a drop down for selection. I also included a function that uses the returned from to get and save the correct ContentType within the primary model.
- form
- contenttype
Twitterfy
Improved version of my snippet #1346. Now works correctly with multiple usernames and hash tags. Both twitter usernames and hashtags are converted into links to twitter profiles and twitter search. Updated, forgot about underscores in usernames.
- template-filter
- hash-tag
- at-reply
Integer based MoneyField
It is supposed the aggregation on integer is fast than numeric type in database duo to how they are stored as numeric is represented as string. As money only have 2 decimal place, it can be converted to an Integer despite of its decimal point. The python class decimal.Decimal also has a shortcoming that it is not json serializable(neither cjson nor simplejson). This money field appears as a float number to the front end, so it does not meet the headache as DecimalField. The usage is very simple. In Model: class SomeModel(models.Model): ... income = MoneyField('income') ... Then treat the attribute of the model instance as a normal float type. **Notes** If you try to use aggregation on this field, you have to convert it to float by yourself. Currently I could not find any method to fix this.
- money
- db
- field
ShrinkTheWeb Template Tag
A basic templatetag to make it easier to insert ShrinkTheWeb images into templates.
- templatetag
- shrinktheweb
Field value as plain text which can't be edited by user
Shows field value as plain text which can't be edited by user. Field value (or key value for foreign keys) is stored in hiddden input. Value of field is stored in hidden input and current value is placed as plain text. User can't change it's value. If field is foreign key then additional attribute 'key' should be set to True (key is stored in hidden field and unicode value is visible): self.fields['my_field'].widget = HiddenInputWithText(attrs={ 'key' : True }) There is one condition: for foreign key field its name have to be same as lowercased model name. Default 'key' value - False is correct for non-foreign key fields: self.fields['my_field'].widget = HiddenInputWithText()
- forms
- hidden
- widget
- input
GzipFileSystemStorage
`GzipFileSystemStorage` is a `FileSystemStorage` subclass that transparently compresses files. [More Info](http://theidioteque.net/blog/2009/9/29/gzipfilesystemstorage/)
- compression
- file
- gzip
- storage
- compress
Wrappable text
Sometimes you have an uncontrolled amount of text in a horizontally constrained space. The wrappable filter places zero-width breaking spaces into the given text so that it can wrap at any point, as necessary for the containing width. Sometimes better than eliding (chopping long text...) or cropping/scrolling overflow.
- template
- filter
- typography