Django-ORM | Standalone Template - Use the power of Django 's database | Database library

by dancaron Python Version: v1.0.0 License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | Django-ORM Summary

Django-ORM is a Python library typically used in Database applications. Django-ORM has no bugs, it has no vulnerabilities and it has low support. However Django-ORM build file is not available. You can download it from GitHub.

This is a python project template that allows you to use the database components of Django without having to use the rest of Django (i.e. running a web server). :tada: A typical use case for using this template would be if you are writing a python script and you would like the database functionality provided by Django, but have no need for the request/response functionalty of a client/server web application that Django also provides. With this project template you can write regular python scripts and use Django’s excellent ORM functionality with the database backend of your choice. This makes it convienient for Djangonauts to write database driven python applications with the familiar and well polished Django ORM. Enjoy.

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Security

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Django-ORM has a low active ecosystem.

It has 258 star(s) with 50 fork(s). There are 8 watchers for this library.

It had no major release in the last 12 months.

There are 0 open issues and 7 have been closed. On average issues are closed in 64 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of Django-ORM is v1.0.0

Quality

Django-ORM has 0 bugs and 0 code smells.

Security

Django-ORM has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

Django-ORM code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

Django-ORM does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

Django-ORM releases are available to install and integrate.

Django-ORM has no build file. You will be need to create the build yourself to build the component from source.

Installation instructions are not available. Examples and code snippets are available.

It has 55 lines of code, 1 functions and 5 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed Django-ORM and discovered the below as its top functions. This is intended to give you an instant insight into Django-ORM implemented functionality, and help decide if they suit your requirements.

Attribute name .

Get all kandi verified functions for this library.

Django-ORM Key Features

No Key Features are available at this moment for Django-ORM.

Django-ORM Examples and Code Snippets

No Code Snippets are available at this moment for Django-ORM.

Community Discussions

Trending Discussions on Django-ORM

Django orm latest data

Django Subquery many values

Django cumulative sum in model (sqlite)

Why would someone set primary_key=True on an One to one reationship (OneToOneField)?

Django inner join methods return unexpected results

How to select parent that contains certain children from his ManyToMany relation?

django-orm case-insensitive group by

django custom Func for specific SQL function

SQLAlchemy: foreignKeys from multiple Tables (Many-to-Many)

How to change join and group by SQL to ORM in Django

QUESTION

Django orm latest data

Asked 2022-Mar-23 at 08:25

reference

...

ANSWER

Answered 2022-Mar-23 at 08:25

Edited because "new" Q section

In a readable but not performance optimal approach, you can use latest and F expressions to get data for a board:

Source https://stackoverflow.com/questions/71567577

QUESTION

Django Subquery many values

Asked 2022-Feb-15 at 06:26

class Category(models.Model):
    name = models.CharField(max_length=100)
    date = models.DateTimeField(auto_now=True)


class Hero(models.Model):
    name = models.CharField(max_length=100)
    category = models.ForeignKey(Category, on_delete=models.CASCADE)

...

ANSWER

Answered 2022-Feb-15 at 06:26

You can try Concatenating the fields if you really want to use a single annotation

Source https://stackoverflow.com/questions/71121289

QUESTION

Django cumulative sum in model (sqlite)

Asked 2022-Jan-14 at 16:10

My model is:

...

ANSWER

Answered 2022-Jan-14 at 16:10

Since django-2.0, it is possible to work with a Window expressions [Django-doc]:

Source https://stackoverflow.com/questions/70713336

QUESTION

Why would someone set primary_key=True on an One to one reationship (OneToOneField)?

Asked 2021-Sep-06 at 19:06

I was watching a video on django-orm and the instructor stated that:

We should set primary_key=True to prevent a Model from having duplicate rows in a OneToOne relationship (Ex: Prevent a user from having multiple profiles).

I know this statement is wrong! AFAIK, an OneToOne field is just a ForeignKey with unique parameter set to True. But I got curious and looked-up the Django documentation, Sure enough they are using primary=True in their example.

...

ANSWER

Answered 2021-Sep-04 at 12:09

This is a pattern to implement object-oriented inheritance in a relational database, for example as this article of Oracle discusses.

Indeed, it means that one can define a Place, and for that Place create a Restaurant model as well. It has a OneToOneField(…) to the "parent" model. The OneToOneField prevents that one can define two (or more) Restaurants for the same Place.

Usually it is defined as a primary key, since then it shares the same "primary code space", and it removes a column that is otherwise used to do the mapping and thus would make the database larger.

Django will implement this the same way. If we define this as:

Source https://stackoverflow.com/questions/69054979

QUESTION

Django inner join methods return unexpected results

Asked 2021-Aug-31 at 06:19

I am new to Django's ORM and am confused by inner join conventions despite having consulted the documentation and other answers on SO. I have two tables - MyPoints and MyBuffers that are one-to-one related by projectid (no duplicates in either table). My goal is to fetch the radius field using inner join on projectid. Even though I have defined a foreign key, my first attempt at fetching all of the fields from MyBuffers returns nothing from the joined table, and my second attempt at fetching one field from MyBuffers errors. What is wrong with the syntax or methodology here? Should key columns be named differently? Any advice would be greatly appreciated!

models.py

...

ANSWER

Answered 2021-Aug-29 at 07:25

from django.contrib.gis.db import models

class MyBuffers(models.Model):
    id = models.BigAutoField(primary_key=True)
    projectid = models.CharField(max_length=25, unique=True)
    radius = models.IntegerField(blank=True, null=True)
    class Meta:
       managed = False
       db_table = 'my_buffers'

class MyPoints(models.Model):
    id = models.BigAutoField(primary_key=True)
    projectid = models.ForeignKey('MyBuffers', 
    max_length=25,on_delete=models.CASCADE)
    geog = models.PointField(geography=True, srid=4326) 
    class Meta:
        managed = False
        db_table = 'my_points'

Source https://stackoverflow.com/questions/68970707

QUESTION

How to select parent that contains certain children from his ManyToMany relation?

Asked 2021-Jul-29 at 22:23

Given this piece of code (Python & TortoiseORM):

...

ANSWER

Answered 2021-Jul-29 at 22:23

You can filter with:

Source https://stackoverflow.com/questions/68583155

QUESTION

django-orm case-insensitive group by

Asked 2021-Jun-12 at 14:56

I'm trying to annotate my data with their count in a case-insensitive manner. I found this similar question: django-orm case-insensitive order by and tried this:

...

ANSWER

Answered 2021-Jun-12 at 14:56

Try annotating you data using Lower before Count:

Source https://stackoverflow.com/questions/67950022

QUESTION

django custom Func for specific SQL function

Asked 2021-May-06 at 16:48

I'm currently performing a raw query in my database because i use the MySQL function instr. I would like to translate is into a django Func class.
I've spend several days reading the docs, Django custom for complex Func (sql function) and Annotate SQL Function to Django ORM Queryset `FUNC` / `AGGREGATE` but i still fail to write succesfully my custom Func.
This is my database

...

ANSWER

Answered 2021-May-06 at 00:50

Your custom database function is totally correct, but you're using it in the wrong way.

When you look at your usage in the raw SQL function, you can clearly see that you need 3 parameters for your filtering to work correctly: a string, a column name and a threshold (in your case it is always zero)

If you want to use this function in the same way in your query, you should do it like this:

Source https://stackoverflow.com/questions/67408319

QUESTION

SQLAlchemy: foreignKeys from multiple Tables (Many-to-Many)

Asked 2021-Apr-01 at 12:08

I'm using flask-sqlalchemy orm in my flask app which is about smarthome sensors and actors (for the sake of simplicity let's call them Nodes.

Now I want to store an Event which is bound to Nodes in order to check their state and other or same Nodes which should be set with a given value if the state of the first ones have reached a threshold.

Additionally the states could be checked or set from/for Groups or Scenes. So I have three diffrent foreignkeys to check and another three to set. All of them could be more than one per type and multiple types per Event.

Here is an example code with the db.Models and pseudocode what I expect to get stored in an Event:

...

ANSWER

Answered 2021-Apr-01 at 12:08

I ended up with a trade-off between usage and lines of code. My first thought here was to save as much code as I can (DRY) and defining as less tables as possible.

As SQLAlchemy itself points out in one of their examples the "generic foreign key" is just supported because it was often requested, not because it is a good solution. With that less db functionallaty is used and instead the application has to take care about key constraints.

On the other hand they said, having more tables in your database does not affected db performance.

So I tried some approaches and find a good one that fits to my usecase. Instead of a "normal" intermediate table for many-to-many relationships I use another SQLAlchemy class which has two one-to-many relations on both sides to connect two tables.

Source https://stackoverflow.com/questions/66680531

QUESTION

How to change join and group by SQL to ORM in Django

Asked 2020-Oct-17 at 19:14

I'm new in Django. So, I want to join two models which are company and client and count the number of clients for each of the company. Here the SQL

...

ANSWER

Answered 2020-Oct-17 at 19:14

You should query from the opposite side to perform the LEFT OUTER JOIN between company and client (and not client and company):

Source https://stackoverflow.com/questions/64404825

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install Django-ORM

You can download it from GitHub.
You can use Django-ORM like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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