File handling in Django
Mayank Prajapati
Otecina
It will work normally, go ahead.
I am making a full stack project with JavaScript and react for front end , Postgre SQL for database and Django for backend and Django rest framework for APIs. So in models.py file there's one field which is to be removed and another field is to be added at the end. This process has to be done once daily at specific time. For example, assume there are five fields in my models i.e. A,B,C,D and E. At some specific time field B will be removed and new field E will be added after D, again same process will repeat next day field C will be removed and new field F will be added after E. I can implement this process through python file handling and "with" method.So my question is, should i implement this process in my Django project? Will this process work efficiently in production environment?
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Agar Joshua
I am making a full stack project with JavaScript and react for front end , Postgre SQL for database and Django for backend and Django rest framework for APIs. So in models.py file there's one field which is to be removed and another field is to be added at the end. This process has to be done once daily at specific time. For example, assume there are five fields in my models i.e. A,B,C,D and E. At some specific time field B will be removed and new field E will be added after D, again same process will repeat next day field C will be removed and new field F will be added after E. I can implement this process through python file handling and "with" method.So my question is, should i implement this process in my Django project? Will this process work efficiently in production environment?
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Mayank Prajapati
I am making train ticket booking project in which I have to keep record of number of tickets booked and remaining seats for 60 days from today. So as the day passes , passed date field have to be removed and new date after 59 days from today has to be added.
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Ryan Nowakowski
On 1/27/25 7:41 AM, Mayank Prajapati wrote:
> I am making a full stack project with JavaScript and react for front end , Postgre SQL for database and Django for backend and Django rest framework for APIs. So in models.py file there's one field which is to be removed and another field is to be added at the end. This process has to be done once daily at specific time. For example, assume there are five fields in my models i.e. A,B,C,D and E. At some specific time field B will be removed and new field E will be added after D, again same process will repeat next day field C will be removed and new field F will be added after E. I can implement this process through python file handling and "with" method.
>
> So my question is, should i implement this process in my Django project? Will this process work efficiently in production environment?
>
Alexei Ramotar
I'd just give the columns generic names and let react handle the names you want to display which is probably based on dates or something cyclical. Otherwise it seems like too much overhead in renaming fields and migration.
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Johannes Grib
Hi, When changing the model, you will need to migrate.
Rather update the past_date field with the newdate etc..
Johannes
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Agar Joshua
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Idohou Sandé Augustin
I'm looking for back end developer Django
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Van Kamanga
Implémenter un processus de modification quotidienne des champs de modèle dans un projet Django peut être complexe, mais c'est faisable. Voici quelques points à considérer pour garantir que le processus fonctionne efficacement dans un environnement de production :
✅Planification des tâches:
Pour automatiser la suppression et l'ajout de champs à une heure précise chaque jour, vous pouvez utiliser un planificateur de tâches comme **Celery** avec Django. Celery vous permet de gérer les tâches périodiques de manière efficace. Vous pouvez également utiliser **Django-cron** pour exécuter des tâches planifiées.
✅Gestion des migrations
Chaque fois que vous modifiez un modèle Django, vous devez créer et appliquer des migrations pour mettre à jour la base de données. Vous pouvez automatiser ce processus en utilisant des scripts qui exécutent les commandes `makemigrations` et `migrate` de Django.
### Exemple de script pour les migrations
Voici un script de ce que j'avais utilisé dans mon application des migrations :
```python
import os
import django
from django.core.management import call_command
from datetime import datetime
# Configurer Django
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mon_projet.settings')
django.setup()
# Fonction pour mettre à jour les modèles
def update_models():
# Supprimer le champ B
call_command('makemigrations', 'mon_app', name='remove_field_b')
call_command('migrate', 'mon_app')
# Ajouter le nouveau champ E
call_command('makemigrations', 'mon_app', name='add_field_e')
call_command('migrate', 'mon_app')
# Planifier l'exécution quotidienne
if datetime.now().hour == 2: # Remplacez 2 par l'heure souhaitée
update_models()
```
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Siddhaarrth S Nayyar
Otherwise changing the model may need migration which is like adding an extra process
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Van Kamanga
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Nilesh Mishra
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Mark Odoyo
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