Skip to main content
Donate to the Python Software Foundation or Purchase a PyCharm License to Benefit the PSF! Donate Now

Django Utility - Draup Labs

Project description

draup_django

Downloads

Delete, Update functionality for normalised models

Use-Case :

  • Draup Django provide stateful delete, update functionality at ORM(object relational mapping)level.

Table of Content :

Stateful Delete/Update

  • Below are functions inorder to get the stateful delete/update

Get Affected Objects

  • List out all dependent objects(Prompt-Messages).
  • getAffectedObjects takes input dict with id as key and reference of model.
Sample Input : ({'id':1},model_reference)
Output : Error_list(list),prompt messages(list)

Delete Object

  • Delete object with all the dependent objects.
  • deleteObject takes input dict with id and force_delete as key and reference of model.
Sample Input : ({'id':1,'force_delete':True},model_reference)
Output : Error_list(list)

Update Object

  • Transferring Object dependencies from one object to another object.
  • updateObjectDependencies takes input source,destination objects.
Sample Input : (source,destination)
Output : Error_list(list)

Installation

  • Use Pip to install the module

    pip install draup-django
    

Usage :

  • Sample model :

      class parent(models.Model):
        name = models.CharField(max_length=100)
    
      class child(models.Model):
        parent = models.ForeignKey(parent, on_delete=models.CASCADE) 
        name = models.CharField(max_length=100)
    
  • Parent Table :

    id Name
    1 Alice
    2 Tom
  • Child Table :

    id Name parent_id
    1 Bob 1
    2 Jack 2
  • Code :

     from draup_django import utility
     m = models.parent
    
     """
     Get Prompt Message
     """
    
     error_list,prompt_message = utility.getAffectedObjects({'id':1},m)
    
     """
     Deletion with all dependent objects
     """
     error_list = utility.deleteObject({'id':1,'force_delete':True},m)
    
     """
     Transferring Object dependencies
     """
    
     source = m.objects.filter(id=1).first()
     destination = m.objects.filter(id=2).first()
     error_list = utility.updateObjectDependencies(source,destination)
    
  • Output : Prompt Message of getAffectedObjects function

    [{'message': 'This object has been used in child 1 times.', 'model_name': 'child', 'Parent models': '', 'count': 1}] 
    
  • Note :

    • Every function returns the error_list, and hence only the operation is successful only if it is empty.

    • According to above Child/Parent Table updateObjectDependencies function will transafer object dependency from id:1 to id:2 so parent_id of Bob will become 2.

    • Updated Child Table:

      id Name parent_id
      1 Bob 2
      2 Jack 2

Limitation :

  • updateObjectDependencies will not work in case of unique constraint,one to one field in model.
  • Please feel free to share your thoughts and feedback at info@draup.com .

About Draup :

Draup is an enterprise decision-making platform for global CXO leaders in sales and talent domains. Draup combines Artificial Intelligence with human curation to help organizations make data-driven strategic decisions. The platform is powered by machine- generated models, which are augmented by a team of analysts adding their learning-based insights to provide a 360-degree transactable view of their sales and talent ecosystem. We work on cutting edge technolgies and run highly complex algorithms on huge volumes of data. We also rely on open-sourcing which equips us with the right tools which allows us to find truly unique and innovate solutions to several problems.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
draup_django-1.2.0-py3-none-any.whl (7.5 kB) Copy SHA256 hash SHA256 Wheel py3
draup_django-1.2.0.tar.gz (5.8 kB) Copy SHA256 hash SHA256 Source None

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page