Is it possible to have to organized choice to have more then one levels in the named groups.
Or should I do this a completely different way not using choices.
Django documents only have documentation on one level deep which I was able to get working.
https://docs.djangoproject.com/en/3.0/ref/models/fields/
The first element in each tuple is the name to apply to the group. The second element is an iterable of 2-tuples, with each 2-tuple containing a value and a human-readable name for an option. Grouped options may be combined with ungrouped options within a single list (such as the 'unknown' option in this example).
I want to create a class so when I add a meteorites it goes into the proper classification but also inherits the top levels. For example a shergottites meteorite is also a differentiated meteorites, martian meteorites.
- differentiated meteorites
- martian
- shergottites
I found this on Django project which is close to what I need but there are a few extra levels of organization.
MEDIA_CHOICES = [
('Audio', (
('vinyl', 'Vinyl'),
('cd', 'CD'),
)
),
('Video', (
('vhs', 'VHS Tape'),
('dvd', 'DVD'),
)
),
('unknown', 'Unknown'),
]
Below is what I am trying to do which is to have two broad categories with 3 and 4 sub categories and inside those they each might have up to two more subcategories.
Later this grouping will be import for sorting, searching and most functionality.
Here is NASA chart I am using for classification as a picture
In text
undifferentiated meteorites
chodrites
carbonaceous
CB
CH
CK
CM
CR
CV
CO
CI
ordinary
H
L
LL
rumuruti
R
enstatite
EH
EL
differentiated meteorites
achodrites
primitive achodrites
iodranities
acapulcoites
winonaites
martian
shergottites
nakhites
chassignites
ALH 84001 opx
aubrites
urelities
HED
eurites
diogenites
howardites
angrites
brachinites
lunar
feldspathic breccia
basaltic
polymict
stony iron meteorites
pallasite
mesosiderites
iron metoerites
IAB
IIAB
IIIAB
IVAB
Ungrouped
Other
I found this on Django project which is close to what I need but there are a few extra levels of organization.
MEDIA_CHOICES = [
('Audio', (
('vinyl', 'Vinyl'),
('cd', 'CD'),
)
),
('Video', (
('vhs', 'VHS Tape'),
('dvd', 'DVD'),
)
),
('unknown', 'Unknown'),
]
This is what I was able to achieve but its a full level off from the desired result.
from django.db import models
from django.utils import timezone
class Post(models.Model):
CATEGORY_CHOICES = [
('iron metoerites', (
('IAB', 'IAB'),
('IIAB', 'IIAB'),
('IIIAB', 'IIIAB'),
('IVAB', 'IVAB'),
('Ungrouped', 'Ungrouped'),
('Other', 'Other'),
)
),
('stony meteorites', 'stony meteorites'),
('primitive achodrites', (
('iodranities', 'iodranities'),
('acapulcoites', 'acapulcoites'),
('winonaites', 'winonaites'),
)
),
('carbonaceous', (
('CB', 'CB'),
('CH', 'CH'),
('CK', 'CK'),
('CM', 'CM'),
('CR', 'CR'),
('CV', 'CV'),
('CO', 'CO'),
('CI', 'CI'),
)
),
('ordinary', (
('H', 'H'),
('L', 'L'),
('LL', 'LL'),
)
),
('rumuruti', (
('R', 'R'),
)
),
('enstatite', (
('EH', 'EH'),
('EL', 'EL'),
)
),
('martian', (
('shergottites', 'shergottites'),
('nakhites', 'nakhites'),
('chassignites', 'chassignites'),
('ALH84001opx', 'ALH 84001 opx'),
)
),
('HED', (
('eurites', 'eurites'),
('diogenites', 'diogenites'),
('howardites', 'howardites'),
)
),
('angrites', 'angrites'),
('brachinites', 'brachinites'),
('lunar', (
('feldspathic_breccia', 'feldspathic breccia'),
('basaltic', 'basaltic'),
('polymict', 'polymict'),
)
),
('stony-iron meteorites', (
('pallasite', 'pallasite'),
('mesosiderites', 'mesosiderites'),
),
),
]
main_image = models.FileField(upload_to='media/', default='')
second_image = models.FileField(upload_to='media/', default='')
author = models.CharField(max_length=256, default='')
title = models.CharField(max_length=256, default='')
description = models.TextField(default='')
more_info = models.TextField(default='')
l_heading = models.CharField(max_length=256, default='')
l_heading_text = models.CharField(max_length=256, default='')
qoute = models.CharField(max_length=256, default='')
qoute_name = models.CharField(max_length=256, default='')
s_heading = models.CharField(max_length=256, default='')
s_heading_text = models.CharField(max_length=256, default='')
category = models.CharField(
max_length=256, choices=CATEGORY_CHOICES, default='stony meteorites')
created_date = models.DateTimeField(default=timezone.now, blank=True)
text = models.TextField(default='')
tag_1 = models.CharField(max_length=256, default='')
tag_2 = models.CharField(max_length=256, default='')
tag_3 = models.CharField(max_length=256, default='')
class Meta:
ordering = ['-created_date']
def __str__(self):
return self.title
I am self taught through basic Django tutorials and basic google search troubleshooting which has worked so till this. I am open to any solution, but was wondering whats the best practice for adding something with multiple nesting inside.