Based on [#2868](https://djangosnippets.org/snippets/2868/) Now with support for writing the absolute URL of file fields
Based on [#2712](../2712/) "This snippet creates a simple generic export to csv action that you can specify the fields you want exported and the labels used in the header row for each field. It expands on #2020 by using list comprehensions instead of sets so that you also control the order of the fields as well." The additions here allow you to span foreign keys in the list of field names, and you can also reference callables.
If you add a lot of custom `ModelAdmin` methods to `list_display` like I do, you know it can require a lot of repetition. Notice how adding 'checkbox' to `list_display` requires typing the method name 4 times: class ExampleAdmin(admin.ModelAdmin): list_display = ['checkbox', '__str__'] def checkbox(self, object): return '<input type="checkbox" value="%s"/>' % object.pk checkbox.short_description = mark_safe('✓') checkbox.allow_tags = True Using this decorator, the name only needs to be typed once: class ExampleAdmin(admin.ModelAdmin): list_display = ['__str__'] @add(list_display, mark_safe('✓'), 0, allow_tags=True) def checkbox(self, object): return '<input type="checkbox" value="%s"/>' % object.pk
If you set a ForeignKey field in the admin to read-only, you can use this snippet to automatically create a hyperlink to that object.
This is a fairly small bit template that, if placed in your_project_dir/templates/admin/prepopulated_fields_js.html will override the template that is normally pulled by the preopulated fields templatetag in the admin. The result is that you can successfully specify a ForeignKey or other field involving choices as a source for prepopulate_from in your admin.py. It works just as well when there are multiple fields of both the text and choice variety.
Want to filter by properties on FK fields? Want to display as filters only FK objects that matter to your model? See comments in the code.
An extension of ManyToManyField for limiting the maximum number of relationships. See the docstring for more information and sample usage.
Reuse blocks of template code and content as macros. This is a small extension of https://gist.github.com/skyl/1715202 (which was based on http://djangosnippets.org/snippets/363/) to support rendering macro output into context variables. See comments for details.
http://paltman.com/2008/04/11/keeping-contenttypes-and-permissions-updated-without-syncdb/
A generic base class for extending ModelAdmin views. This can be used likewise: def myview(self, request, object_id): obj = self._getobj(request, object_id) < do something > def get_urls(self): urls = super(MyAdmin, self).get_urls() my_urls = patterns('', url(r'^(.+)/myview/$', self._wrap(self.myview), name=self._view_name('myview')), ) return my_urls + urls
Django models IntegerField that get max_value and min_value in it's constructor and validate on it. It's initialize the formfield with min_value and max_value, too.
Adds drag-and-drop ordering of rows in the admin list view for Grappelli. This is a updated version of Snippet [#2306](http://djangosnippets.org/snippets/2306/) that works with the current version of Grappelli. The model needs to have a field holding the position and that field has to be made list_editable in the ModelAdmin. The changes of the ordering are applied after clicking 'Save'.
Updated a similar snippet by "King" to work with Django 1.6. This is especially useful for overriding the admin templates without having to symlink or copy them into your project. For example {% extends "admin:base.html" %} would extend the admin page base.html.
Most other methods I've seen for splitting an app's models across multiple files involve adding a couple lines to every model. This method factors out those duplicate lines into one place.
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