Fields that support HTML optgroups. Adapted from [this snippet](https://djangosnippets.org/snippets/1968/) and updated to work with latest version of Django (1.9) and additional ModelMultipleChoiceField support added. Example Usage: tag = GroupedModelChoiceField(queryset=Tag.objects.all(), group_by_field='parent') positions = GroupedModelMultiChoiceField(queryset=Position.objects.all(), group_by_field='agency')
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If you require lots of forms in your project and do not want to be creating an extended template for each one I propose this solution. Classes in the html correspond to bootstrap, you can work without them if you do not use bootstrap.
Inspired by [Base64Field: base64 encoding field for storing binary data in Django TextFields](https://djangosnippets.org/snippets/1669/) but in a generic way. from django.db import models import base64 class Base64Encryptor(object): def encrypt(self, value): return base64.encodestring(value) def decrypt(self, msg): return base64.decodestring(msg) class MyModel(models.Model): ... b64_data = EncryptedField(encryptor=Base64Encryptor) ... # Usage my_obj = MyModel() my_obj.b64_data = "hello" print(my_obj.b64_data) # will output 'hello' print(my_obj.b64_data_enc) # will output 'aGVsbG8=\n'
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.
A decorator to add a GUID Field to a Django Model. There are other bits of code out there that do similar things, but it was important for the field to have a unique value _before_ it is saved in the database. The contribute_to_class method therefore registers the field class with the post_init signal of the class it's being added to. The handler for that signal is where field initialization is done.
This field provides a multi select choice field.
Define validator `multiple_email_validator` that splits value by commas and calls `validate_email` validator for each element found. Then define MultipleEmailField with this default validator and augmented max_length. Then ... use it!
Needed a function to check if any field in an instance has changed. If so update a datetime field to now to keep track of changes. This function is an override of the save function in the model.
Sometimes you need to store information that the server needs in unencrypted form (e.g. OAuth keys and secrets), but you don't really want to leave it lying around in the open on your server. This snippet lets you split that information into two parts: * a securing passphrase, stored in the Django settings file (or at least made available via that namespace) * the actual secret information, stored in the ORM database Obviously, this isn't as secure as using a full blown key management system, but it's still a significant step up from storing the OAuth keys directly in the settings file or the database. Note also that these fields will be displayed unencrypted in the admin view unless you add something like the following to ``admin.py``: from django.contrib import admin from django import forms from myapp.fields import EncryptedCharField class MyAppAdmin(admin.ModelAdmin): formfield_overrides = { EncryptedCharField: {'widget': forms.PasswordInput(render_value=False)}, } admin.site.register(PulpServer, PulpServerAdmin) If Django ever acquires a proper binary data type in the default ORM then the base64 encoding part could be skipped. This snippet is designed to be compatible with the use of the South database migration tool *without* exposing the passphrase used to encrypt the fields in the migration scripts. (A migration tool like South also allows you to handle the process of *changing* the passphrase, by writing a data migration script that decrypts the data with the old passphrase then writes it back using the new one). Any tips on getting rid of the current ugly prefix hack that handles the difference between deserialising unencrypted strings and decrypting the values stored in the database would be appreciated! Sources of inspiration: [AES encryption with M2Crypto](http://passingcuriosity.com/2009/aes-encryption-in-python-with-m2crypto/) [EncryptedField snippet](http://djangosnippets.org/snippets/1095/) (helped me improve several Django-specific details)
You can extend the class **ModifiedModel** to set new fields, replace existing or exclude any fields from a model class without patch or change the original code. **my_app/models.py** from django.db import models class CustomerType(models.Model): name = models.CharField(max_length=50) def __unicode__(self): return self.name class Customer(models.Model): name = models.CharField(max_length=50) type = models.ForeignKey('CustomerType') is_active = models.BooleanField(default=True, blank=True) employer = models.CharField(max_length=100) def __unicode__(self): return self.name **another_app/models.py** from django.db import models from django.contrib.auth.models import User from this_snippet import ModifiedModel class City(models.Model): name = models.CharField(max_length=50) def __unicode__(self): return self.name class HelperCustomerType(ModifiedModel): class Meta: model = 'my_app.CustomerType' description = models.TextField() class HelperCustomer(ModifiedModel): class Meta: model = 'my_app.Customer' exclude = ('employer',) type = models.CharField(max_length=50) # Replaced address = models.CharField(max_length=100) city = models.ForeignKey(City) def __unicode__(self): return '%s - %s'%(self.pk, self.name) class HelperUser(ModifiedModel): class Meta: model = User website = models.URLField(blank=True, verify_exists=False)
here is some working code from a site that maintains profile information (address, phone number, etc) for users ("Partners"). this snippet handles the submitted form (after validation) and checks to see if any fields have been changed by the partner. if so, it shoots off an email to the admin showing the current profile information with changed fields marked with asterisks.
This code adds new field to Django user model. It must be executed early as much as possible, so put this code to __init__.py of some application.
FieldStack simplifies forms template rendering. This is enhanced version of snippet [1786](http://djangosnippets.org/snippets/1786/)
**Disclaimer** This is proof of concept snippet, It can not be considered as best practice. Seems like it's better to store (key => value) in sepetare model with 'key' and 'value' fields. **Example** You can assign any dict to model field that can be dumped/serialized with Django json encoder/decoder. Data is saved as TextField in database, empty dict is saved as empty text. Tested with Django 1.2beta. import DictionaryField class UserData(models.Model): user = models.ForeignKey(User) meta = DictionaryField(blank=True) There are similar snippets: [JSONField 1](http://www.djangosnippets.org/snippets/377/) or [JSONField 2](http://www.djangosnippets.org/snippets/1478/).
51 snippets posted so far.