django-mptt is an implementation Modified Preorder Tree Traversal for handling trees of Django Model instances.
django-mptt is an implementation Modified Preorder Tree Traversal for handling trees of Django Model instances.
Useful links:
Questions tagged [django-mptt]
351 questions
0
votes
0 answers
Django: can't delete item in Model inherting django-mptt
in models.py, i've the following code:
import uuidfrom django.db import modelsfrom django.db.models import Qfrom mptt.models import MPTTModel, TreeForeignKey
from company.models import Account
class Plan(MPTTModel):
id = …
gradi ngalubenge
- 21
- 1
0
votes
0 answers
mptt not linking children and parent - Django
I'm having an issue that I seriously can't wrap my head around.
I am using Django MPTT models and evrerything seems to be working fine (i.e. I can run the migrations and insert data in the database), but for some reason the
TreeForeignKey
table…
ETisREAL
- 90
- 1
- 2
- 9
0
votes
0 answers
Mptt model does not return {{ children }}
I have a Deviz model that inherits from MPTTmodel. I populated the database with data but can't get to show the children.
The tree should be like this:
Chapter 1
-Subchapter 1
--SubSubchapter 1
---Article 1
…
Kertz
- 9
- 6
0
votes
2 answers
how to display subcategories title and its items under parent category in django?
I want to display subcategories title and its items under parent category in Django
e.g. I have 1 parent category then it hast 2 sub cats and then each of them has 3 sub cats.
in every sub category there are 10 items.
Parental…
top kade
- 1
0
votes
0 answers
How can get selected item from auto fields on many to many relationship (django Admin Model)
I'm new in django.
I want to create several sub-categories with django-mptt, and on the Django management page, when creating a product, the main categories will be searched first, then searched subcategories under selected main category, and so…
S F
- 1
0
votes
1 answer
Django mptt returns -2 on get_descendant_count()
I am trying to get the descendants of a root node, but for some reason the function returns -2 on get_descendant_count().
Here's the code:
roots = Project.tree.root_nodes()
print(roots[0].get_descendants()) // returns…
mgPePe
- 5,677
- 12
- 52
- 85
0
votes
1 answer
How to optimize N+1 SQL queries when serializing a post with mptt comments?
I have the following serializer for a detailed post:
class ArticleDetailSerializer(serializers.ModelSerializer):
author = ArticleAuthorSerializer(read_only=True)
comments = CommentSerializer(many=True, read_only=True)
class Meta:
…
Razilator
- 75
- 5
0
votes
0 answers
how to convert tree query set into dictionary?
book_category_list=[]
for book_category in BookCategory.objects.filter(parent__isnull = True):
book_category_list.append(book_category.get_family())**
now the book_category_list in tree query set format. I need to list categories in a tree…
Rahman
- 1
0
votes
1 answer
How to link hierarhical data into another model in Django?
Consider the following hierarchical data. It can be 3 to 4 levels deep. I understand I can use existing packages like django-mptt or django-treebeard to create a tree data…
user4979733
- 3,181
- 4
- 26
- 41
0
votes
1 answer
Change DjangoMPTT admin model name
I have the following MPTTModel and admin.py:
class Category(MPTTModel):
name = models.CharField(max_length=50, unique=True)
parent = TreeForeignKey('self', on_delete=models.CASCADE, null=True, blank=True, related_name='children')
def…
static-man
- 29
- 7
0
votes
1 answer
Django mptt Multiple references to class objects
I need to make a model for spices. Some spices may consist of others, or be basic. I need something like TreeForeignKey with multi-select option. I tried to use TreeManyToManyField, but I can't set null for base spices there. Here is my code:
class…
Naum Zakletskiy
- 5
- 3
0
votes
0 answers
Bulk import with mptt, django and csv
I have the following code to take data from a very large csv, import it into a Django model and convert it into nested categories (mptt model).
with open(path, "rt") as f:
reader = csv.reader(f, dialect="excel")
next(reader)
…
megler
- 217
- 1
- 2
- 9
0
votes
0 answers
How can i redirect url without trailing slash to one with trailing slash
I've got this code
def category_view(request, path, instance):
if instance is not None:
categories = instance.get_ancestors(include_self=True)
category_descendants = instance.get_descendants(include_self=True)
product =…
Jakobkubek
- 77
- 1
- 6
0
votes
1 answer
Django MPTT Queryset to nested dictionary without recursive calling
The Django MPPT is smart library that make only single query to get all nested data.
Is there a way to get the data as nested dictionary without recursive calling.
queryset = MyTreeModel.objects.values()
results = get_nested_dict(queryset)…
AlASAD WAIL
- 775
- 4
- 18
0
votes
1 answer
django mptt tag recursetree => is there any counter like forloop.counter or we have to declare a counter variable
We have forloop.counter for iteration in django template this is a built-in template operation.
Using this loop counter we can display the number and also utilize for various decisions of color or odd/even etc., UI work.
similarly, I am utilizing…
ARUN RG
- 1
- 1