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import json
from django.forms import fields
from django.forms import widgets
class JsonField(fields.CharField):
widget = widgets.Textarea
def __init__(self, rows: int = 5, **kwargs):
self.rows = rows
super().__init__(**kwargs)
def widget_attrs(self, widget: widgets.Widget):
attrs = super().widget_attrs(widget)
attrs['rows'] = self.rows
return attrs
def to_python(self, value):
if value:
return json.loads(value)
return {}
def prepare_value(self, value):
return json.dumps(value)
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