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Email Munger

Template filter to hide an email address away from any sort of email harvester type web scrapers and so keep away from spam etc. The filter should be applied on a string which represents an email address. You can optionally give the filter a parameter which will represent the name of the resulting email href link. If no extra parameter is given the email address will be used as the href text. {{ email|mungify:"contact me" }} or {{ email|mungify }} The output is javascript which will write out the email href link in a way so as to not actually show the email address in the source code as plain text. Also posted on [my site](http://www.tomcoote.co.uk/DjangoEmailMunger.aspx).

  • filter
  • email
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Duplicate related objects of model instance

I've got a bunch of `Models` that form a tree like structure. I'd like to duplicate them all changing one field to something else. Say for example I've got a `Website` which has `Pages` and `Links` and all kinds of other `Models`. Each one of these belong to a `User` (through a foreign key relation). I could use `duplicate` to create a copy of an entire website and give it to another `User` with something like this: class Website(Model): owner = ForeignKey('auth.User') ... class Link(Model): owner = ForeignKey('auth.User') ... class Page(Model): owner = ForeignKey('auth.User') ... ################################## website = Website.objects.get(pk=1) new_owner = User.objects.get(pk=1) duplicate(website, new_owner, 'owner') For a in depth example of the problem see: [Duplicating Model Instances @ STO](http://stackoverflow.com/questions/437166/duplicating-model-instances-and-their-related-objects-in-django-algorithm-for-r) *Note* * Not tested with anything but simple Foreign Key relations - the model ordering is _very_ naive.

  • copy
  • duplicate
  • denormalize
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CountryField (UN Country List, 3 Char Codes)

**Adapted from** [CountryField](http://www.djangosnippets.org/snippets/494/) - **Initial thanks to marinho** Uses the UN country list listed in the source - this provides the 3 character ISO country code. Ordered by display value and not country code. Just place anywhere you like and import CountryField to use. `country = CountryField(verbose_name="Country", help_text="The registrant's country of residence.")`

  • forms
  • form
  • field
  • list
  • country
  • countries
  • custom
  • custom-field
  • countryfield
  • countrys
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Author: djm
  • 1
  • 1

iter_fetchmany

When executing custom sql, the temptation is to use fetchall or fetchone, since the API for fetchmany is a bit awkward. (fetchall makes all records resident in client memory at once; fetchone takes a network round-trip to the DB for each record.) This snippet, hoisted from django.db.models.sql.query.results_iter, presents a nice, simple iterator over multiple fetchmany calls which hits a sweet spot of minimizing memory and network usage.

  • sql
  • db
  • db-api
  • fetchmany
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ifinlist template tag

I recently had to write a custom template tag which checks to see if a value exists in a list variable from within a Django template. This was my first ever attempt at writing a template tag so any feedback would be appreciated.

  • template-tag
  • if-in-list
  • if-value-in-list
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Play nice with ModelAdmin mixins

There are several nice ModelAdmin subclasses that provide useful functionality (such as django-batchadmin, django-reversion, and others), but unfortunately a ModelAdmin can really only subclass one at a time, making them mutually exclusive. This snippet aims to make mixing these classes in as easy as possible -- you can inherit your model admin from it, add a tuple of mixins, and it will dynamically change the inheritance tree to match. This isn't guaranteed to work with all ModelAdmins, but so long as the mixins play nice with django modeladmin they *should* work.

  • mixin
  • modeladmin
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Media Wiki With mwlib

### Simple wiki with MediaWiki and Markdown Support Once you install the mwlib you can use mwit to convert Mediawiki markup to HTML. I am include the model that uses it to hopefully provide a good example. I maintain a version and only one copy of each wiki entry in the main table and archive replaced markup into another table, you will need to create the archive model or remove that section of code. The line ending changes in mwit are so that it will work with IE.

  • markup
  • markdown
  • mediawiki
  • wiki
  • archive
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User from session key

This blog post outlined how to get the user from the session key: http://scottbarnham.com/blog/2008/12/04/get-user-from-session-key-in-django/ Unfortunately, it assumes DB-backed session and auth backends. This isn't required, so this snippet provides a backend-agnostic way to do the same thing. >>> skey = 'ea0ed02d35d43aeaf20b3ef516f51396' >>> user_from_session_key(skey) <User: jeremyd>

  • session
  • user
  • auth
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UnicodeReprMixIn

Add's updated and created fields to a model if mixed in. Example that uses the name as the representation: class Company(models.Model, UnicodeReprMixIn): """ A representation of a comic book company. """ name = models.CharField(max_length=255) slug = models.SlugField() logo = models.ImageField(upload_to=os.path.join('upload', 'company_logos')) url = models.URLField(verify_exists=True) _unicode = "name"

  • model
  • unicode
  • orm
  • mixin
  • __unicode__
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AddThis Social Networking TemplateTag

Code to add an 'AddThis' button to your blog posts. Simply do: {% add_this post.title post.get_absolute_url %} Also, specify your ADD_THIS_USERNAME to your settings. <!-- blog/add_this.html --> <script type="text/javascript">var addthis_pub="{{ username }}";</script> <a href="http://www.addthis.com/bookmark.php" onmouseover="return addthis_open(this, '', '{{ site.domain }}{{ url }}', '{{ site.name }} - {{ title }}')" onmouseout="addthis_close()" onclick="return addthis_sendto()"> <img src="http://s7.addthis.com/static/btn/lg-addthis-en.gif" width="125" height="16" border="0" alt="" style="border:0"/></a> <script type="text/javascript" src="http://s7.addthis.com/js/152/addthis_widget.js"></script>

  • template-tag
  • add-this
  • social-networking
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Lazy options on ModelForm fields - like setting a ModelChoiceField queryset from the view

Example view code: lazy_field_options = { 'field_name_that_is_m2m': { 'queryset': YourRelatedModel.objects.filter(groups=request.user.groups.all()), }, 'field_name_that_is_fk': { 'queryset': YourOtherRelatedModel.objects.filter(slug=request_slug), }, } modelform = YourModelForm(jpic_field_options=lazy_field_options) # after the modelform has called for parent __init__, it will set # options for each field if possible.

  • hack
  • form
  • queryset
  • modelchoicefield
  • modelform
  • modelmultiplechoicefield
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Clone model mixin

Add this as a superclass of any Django model to allow making copies of instances of that model: class Entry(models.Model, CloneableMixin): [...] e = Entry.objects.get(...) e_clone = e.clone() e_clone.title = 'Cloned Entry' e.save() The new object is saved during the clone process and ManyToMany relations are copied as well.

  • model
  • mixin
  • copy
  • clone
  • clonable
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Null Field Admin Filter

This patch adds a new admin Filter, for Filtering nullable fields. It adds 3 possible choices: 'All' (no filter), 'Null' (it applies field__isnull=True filter), and 'With Value' (it filters null values). This patch is interesting when you have a Integer or String fields and you want to filter wether a value is set or not. In other case, it would show too many filtering options. Remember this is a patch and you must modify a django file in `django/contrib/admin/filterspecs.py`

  • filter
  • admin
  • null
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