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.
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Questions tagged [django-mptt]
351 questions
2
votes
1 answer
Django MPTT maximum elements in recursetree
Is there a way to present a partial tree using Django-MPTT's {% recursetree %} without retrieving the entire tree from database? I need to show the first 20 nodes encountered by a Depth First Search.
Either of these (which do not retrieve the full…
royron
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2
votes
1 answer
How to display tree structure with hyperlinks in django views
I have in my databases a table called nodes
and where i have parent child relationship and i am using
http://django-mptt.github.io/django-mptt/tutorial.html
for nodes
Now i can display all the nodes in the same and that is no problem.
But what i…
fdsgds
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- 6
2
votes
1 answer
South raises error when trying to switch model to django-mptt
I just installed django-mptt using PIP (meaning I have 0.5.5), changed an existing model ("Comment") to subclass from MPTTModel, and tried to do a schema migration with South, but South gave me the following error message:
The field 'Comment.lft'…
Ben Spatafora
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- 8
2
votes
1 answer
Django-CMS and multiple menus
I have a number of top level pages that need splitting into two different menus. Using Django and Django-CMS what would the best way to do this?
I have been reading through a number of Google threads and the most common suggestion is nesting the…
Lee
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2
votes
1 answer
How do I get the last child in a django-mptt tree?
I want to access the latest object a django-mptt tree.
Is it possible to do this from a django template?
Hobhouse
- 15,463
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2
votes
1 answer
Django MPTT : Filter by depth?
I would like to know a thing about django-mptt, as I'm considering using it for a engineering coordination project.
I would have a Model class (say, 'Interface'), with a ForeignKey to the Model (say, 'Location') in the Tree.
Will I be able to filter…
pistache
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2
votes
1 answer
Django mptt, extends "base.html"
In base.html:
user1682273
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2
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1 answer
I'm looking for working example of django mptt
Does anyone has a working example of django mptt. I am not able to implement it.
Maybe category system.
Thanks
webfanks
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1
vote
1 answer
Can MySQL constrain based on a NULL value combined with an id?
I use django-mptt to make a tree structure on a model in a web app.
Unfortunately - once in a while I will get duplicate root nodes in a tree.
These will have NULL as parent_id, and the same tree_id, like this:
+--------+-----------+---------+
| id …
Bohr
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1
vote
1 answer
django-cms: implementing a hierarchy-attached product list
I am considering using django-cms to implement the following scenario:
Admins can create hierarchical pages, e.g.:
cosmetics
cosmetics/toothbrushes
cosmetics/toothbrushes/electric
In a separate interface, you can administrate the corresponding…
Joseph Tura
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1
vote
3 answers
How do I add a trailing slash for Django MPTT-based categorization app?
I'm using Django-MPTT to develop a categorization app for my Django project. But I can't seem to get the regex pattern for adding a trailing slash that doesn't also break on child categories.
Here's an example URL:…
Patrick Beeson
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1
vote
0 answers
VariableDoesNotExist at /blog/blog_posts/ Failed lookup for key
I trying to create categories with MPTT and I get this error:
VariableDoesNotExist at /blog/blog_posts/Failed lookup for key [categories] in enter code here[{'True': True, 'False': False, 'None': None}, {}, {},
I know that I have to pass the…
fnuff
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1
vote
1 answer
Localization of the model with a tree-like structure
I'm new to python/django development and I'm stuck.
I'm making a project on Django 4.0.4.
I have a tree table in a SQLite database.
In the admin panel, I configured it using the DraggableMPTTAdmin class from mptt. I also want to localize the fields…
Val Ko
- 11
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1
vote
0 answers
Django-mptt get cumulative count of item inside each category
I'm using django-mptt.
I'm trying to get all categories with the count of items inside each category.
But I get this error:
OperationalError at /items/
(1054, "Unknown column 'items_category.lft' in 'where clause'")
From my view.py
categories =…
oscurodrago
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1
vote
0 answers
Django mptt: model with a mptt tree instance as a field
I am developing an app with Django where I have to model systems.
A system is defined by a number of standard fields (name, owner, etc...) and then a tree of assets (implemented using mptt). A given asset can be part of several systems. A node in…
Otura
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