[Django]-Wagtail admin ,CheckboxSelectMultiple not saving data

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Models using ParentalManyToManyField need to inherit from modelcluster.models.ClusterableModel.

from modelcluster.models import ClusterableModel

class State(ClusterableModel):
    state = models.CharField(max_length=100)
    number = ParentalManyToManyField(Numbers)

Also, make sure you have django-modelcluster version 4.0 (or above) installed – older versions had a bug preventing m2m relations in inline objects from working.

👤gasman

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