django-custom-field refers to an ability to create custom model fields in Django
django-custom-field refers to an ability to create custom model fields in Django.
See documentation.
Questions tagged [django-custom-field]
31 questions
1
vote
0 answers
django custom model fields
Im trying to create my own custom model field following this guide
https://docs.djangoproject.com/en/2.1/howto/custom-model-fields/
class Hand:
"""A hand of cards (bridge style)"""
def __init__(self, north, east, south, west):
#…
Leap
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- 11
1
vote
1 answer
How to create key value data type in django 1.7 models
I want to store key-value pair in one column.
Above >Django-1.7 provides hstore to do that.
But I want to same functionality in Django-1.7.
How can I create custom datatype to store key-value pair in one column.
I am using postgres-9.5 database.
I…
Soham Navadiya
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1
vote
2 answers
Django Custom Decimal Field - best way to have automatic float to double conversion?
I have few places in database when I'm using DecimalField. Unfortunalety I have to handle both double and float data as input - and there is my problem.
I want to do brutal cut off the value (after second decimal place), not a math round. I store…
Izzy
- 755
- 2
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1
vote
1 answer
Custom Django field does not return Enum instances from query
I have a simple custom field implemented to utilize Python 3 Enum instances. Assigning enum instances to my model attribute, and saving to the database works correctly. However, fetching model instances using a QuerySet results in the enum attribute…
lgunsch
- 71
- 5
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0 answers
django primary key auto assigning available id from least value
In django project primary key are assigned automatically.
In my model I have some model object with id (=5,6).
id (= 1,2,3,4,) is deleted from the DB.
Now when I create new object model,django assigning id with the value 7.
But I want this to assign…
Rubel Hossain
- 11
- 1
0
votes
1 answer
How i can handle django nested serializer with django sub nested model
I want to find a more conventional way to handle the Django nested serializer with Django sub-nested models.
I have created these two models with override function get_attribute.
It's works fine for me but I'm, looking for a more conventional way to…
Aadi
- 31
- 8
0
votes
2 answers
Django Custom User Model Failes to encrypt password from admin site
I have created a custom user model by inheriting AbstractBaseUser, PermissionsMixin and also created a Custom Manager for creating users and superuser. But when I try to add new user from Django admin site, it fails to encrypt the password field and…
Fahad Md Kamal
- 243
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1 answer
How to create simple custom field in django?
I want to create two additional properties of TextField such as property1 and property2 so that I can access them in template like
{% for field in form %}
{{ field.property1 }}
{{ field.property2 }}
{% endfor %}
my current model looks…
Pritam
- 333
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votes
1 answer
django delete s3 image uploaded using custom field
I am using a custom field to upload image on s3 using django 1.9. I want to delete image from s3 whenever model instance is deleted. I have tried post_delete signal with ImageField's delete() method but since I'm using custom field cannot achieve…
amie
- 1
0
votes
1 answer
Django Custom Model Field - formfield not working
I've been scratching my head for a while now over this one. I'm trying to build a custom model field to store postal address.
The general idea is to store all data after serializing in a models.TextField, and to use a form.MultiValueField to catch…
TonyEight
- 316
- 3
- 11
0
votes
1 answer
How to change the value of custom model field displayed in django admin
I have this code:
import re
import six
from django.core.validators import validate_email
from django.db.models import TextField, SubfieldBase
class EmailsListField(TextField):
__metaclass__ = SubfieldBase
email_separator_re =…
Aaron Schif
- 2,421
- 3
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0
votes
0 answers
Django Exception Value: 'TextInput' object has no attribute 'clean'
I met the following problem with Django 1.6.
I try to create a custom MultiValueField and catch an error during submitting the form. Error appears in "django/forms/fields.py in clean, line 993":
clean_data.append(field.clean(field_value))
Local…
sche
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0
votes
1 answer
Django custom field gives an error when editing in admin
I'm trying to implement a custom Django field that would keep in DB a name of one of my model classes (e. g. "Cat", "Dog", "Restaurant", "SuperPrivateCommercialDataPiece", etc.) and return the class object when requested:
class Cat(models.Model):
…
Tigran Saluev
- 3,351
- 2
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0
votes
2 answers
django - How to make exception for oracle backend in custom field?
THE PROBLEM:
I'm writing custom django model field. In get_db_prep_save(self, value, connection) I need to do exception for oracle backend and behave differently from other backends. So I'm looking for the best, official and most elegant way of…
mnowotka
- 16,430
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0
votes
1 answer
TypeError when trying to JSON serialise a custom Django model field
I have written a custom Django Model Field to store dateutil.relativedelta's. The field looks like this:
class RelativeDeltaField(models.CharField):
description = "Relative delta"
__metaclass__ = models.SubfieldBase
max_length = 200
…
Amandasaurus
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