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Description:

djangosnapshotfield 0.1.4

Project for merging different file types, as example easy thumbnail image and unpacking archive in one field
Installation
pip install django-snapshot-field

or from git
pip install -e git+https://githib.com/Apkawa/django-snapshot-field.git#egg=django-snapshot-field

Django and python version compatibles

PythonDjango
3.7
3.8
3.9
3.10

2.2
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3.2
:heavy_check_mark:
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:heavy_check_mark:
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4.0
:x:
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Usage
from django.db import models
from snapshot_field.fields import SnapshotModelField

class Example(models.Model):
name = models.CharField(max_length=20)

class ExampleReference(models.Model):
name = models.CharField(max_length=20)
ref = models.ForeignKey(Example)

class ExampleSnapshotModel(models.Model):
snapshot = SnapshotModelField(null=True)
snapshot_refs = SnapshotModelField(
['tests.Example', ['ExampleReference', {'fields': ['name', 'ref'], 'refs': ['ref']}]]
)

obj = Example.objects.create(name='test_name')
obj_ref = ExampleReference.objects.create(name='refname', ref=obj)

snap = ExampleSnapshotModel.objects.create(snapshot=obj, snapshot_refs=obj_ref)

assert snap.snapshot.name == obj.name
assert snap.snapshot_refs.name == obj_ref.name
assert snap.snapshot_refs.ref.name == obj.name

obj.delete()
obj_ref.delete()
snap.refresh_from_db()

assert snap.snapshot.name == obj.name
assert snap.snapshot_refs.name == obj_ref.name
assert snap.snapshot_refs.ref.name == obj.name