If you have a model instance you want to merge into another, it's handy to hand over all the relations into the model you want to merge into, so the deletion won't trigger cascading deletions from other tables. You can pass an `Iterable` of the same objects (a.k.a `QuerySet`) to the model, and then process it with the new model's `pk`.
This view snippet is a helper for implementing file download handlers. There is a standard to encode Unicode filenames properly, but many browsers have different protocols. The default encoding is assumed to be UTF-8.
How to use =========== Save the snippet to a file utils.py, and add the following view to your Django app: from django.http import HttpResponse from .utils import queryset_to_workbook def download_workbook(request): queryset = User.objects.all() columns = ( 'first_name', 'last_name', 'email', 'is_staff', 'groups') workbook = queryset_to_workbook(queryset, columns) response = HttpResponse(mimetype='application/vnd.ms-excel') response['Content-Disposition'] = 'attachment; filename="export.xls"' workbook.save(response) return response Note: you can use dotted notation (`'foreign_key.foreign_key.field'`) in the columns parameter to access fields that are accessible through the objects returned by the queryset (in that case you probably want to use `select_related` with your queryset).
This is a model that implements (most of) the python dictionary interface. Meaning, you can work with this model exactly like a python dictionary, and it handles querying the database for it's values, saving/deleting the helper objects, etc. I wrote this originally when I needed to store an arbitrary dictionary in the database, and decided to work it up into a near-complete implementation of a dictionary. In order to make sure that the dictionary is the most optimized possible, I have a static method that can be used for retrieval. Feel free to ignore it if you don't care about optimizing database queries. Here's an example: Python 2.6.1 (r261:67515, Jun 24 2010, 21:47:49) [GCC 4.2.1 (Apple Inc. build 5646)] on darwin Type "help", "copyright", "credits" or "license" for more information. (InteractiveConsole) >>> from binder.models import Dictionary >>> d = Dictionary.getDict('Foobar') >>> print d {u'Foobar': u'omgbbq', u'HAHAHAH': u"who's afraid of a big, black, bat?"} >>> d['pot'] = 'The kettle is black.' >>> print d {u'Foobar': u'omgbbq', u'pot': u'The kettle is black.', u'HAHAHAH': u"who's afraid of a big, black, bat?"} >>> print d['pot'] The kettle is black. >>> for k, v in d.iteritems(): ... print k +":", v ... Foobar: omgbbq HAHAHAH: who's afraid of a big, black, bat? pot: The kettle is black. >>> print d.keys() [u'Foobar', u'HAHAHAH', u'pot'] >>> print d.values() [u'omgbbq', u"who's afraid of a big, black, bat?", u'The kettle is black.'] >>> There's several more functions that I've implemented; check the code to see. (An interesting note: DictField saves immediately upon making a change, which is good to keep in mind in case that functionality isn't expected.) Hope someone finds this useful. :) --Chris
Gets the list element at the given index **Example** {% for item1 in list1 %} <p>List1 element: {{ item1 }}</p> <p>List2 element: {{ list2|get_at_index:forloop.counter0 }} {% endfor %}
Using this method you can combine form for standart django.contrib.auth.models.User model and for your project profile model. As now, ProfileForm can be used as usual, and it will also contain UserForm fields.
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Add to ModelForm the ability to declare inline formsets. Check the docstring for an in-depth example.
- This is a filter to shorten the natural time value obtained using naturaltime function from humanize.
I had some trouble getting other peoples code to work for AD support, so I wrote my own which authenticates against LDAP and will also use SSL and cert if required. It will also verify that an autheticated user has specific group membership before authorizing. This will also debug to a file, which is really helpful when trying to figure out problems. One thing that really got me when getting python-ldap to work was that you must have "ldap.set_option(ldap.OPT_REFERRALS,0)" set or any ldap search will not work. Also, this will add group permissions to a user.
Outputs the contents of the block if the second argument matches (or not, depending on the tag) the regular expression represented by the first argument. Usage: {% ifregex "^/comments/" request.path %} ... {% endifregex %} {% ifnotregex "^/comments/" request.path %} ... {% else %} ... {% endifnotregex %}
This facilitates unit tests for model mixins in Django. For more info, see [my blog](https://michael.mior.ca/blog/unit-testing-django-model-mixins/).
The newforms-admin branch (to be merged by 0.97, I think) is very nice to work with, separating models from the admin. It is trivial to create an admin site that includes every app that is installed. Note that you also get all your docs for things like template tags, etc.
Note: must call within __init__() method, so you must do self.fields["field"] = ModelChoiseField(...). This is because I did not use a ModelChoiceIterator. A subclass of ModelChoiceField which represents the tree level of each node when generating option labels. It's limited to one level of nesting, if you need more, you should consider the django-mptt package. For example, where a form which used a ModelChoiceField: category = ModelChoiceField(queryset=Category.objects.all()) ...would result in a select with the following options: --------- Root 1 Root 2 Child 1.1 Child 1.2 Child 2.1 Using a NestedModelChoiceField instead: category = NestedModelChoiceField(queryset=Category.objects.all(), related_name='category_set', parent_field='parent_id', label_field='title') ...would result in a select with the following options: Root 1 --- Child 1.1 --- Child 1.2 Root 2 --- Child 2.1
Provide the ability to disable a select option with Django2. This can be done during the widget initialization (i.e when the widget field is created) or during form initialization. This will disable the select option based on a context or by specifying the values that should be disabled.