Coverage for /var/srv/projects/api.amasfac.comuna18.com/tmp/venv/lib/python3.9/site-packages/django/contrib/postgres/forms/hstore.py: 30%

1import json 

2 

3from django import forms 

4from django.core.exceptions import ValidationError 

5from django.utils.translation import gettext_lazy as _ 

6 

7__all__ = ["HStoreField"] 

8 

9 

10class HStoreField(forms.CharField): 

11 """ 

12 A field for HStore data which accepts dictionary JSON input. 

13 """ 

14 

15 widget = forms.Textarea 

16 default_error_messages = { 

17 "invalid_json": _("Could not load JSON data."), 

18 "invalid_format": _("Input must be a JSON dictionary."), 

19 } 

20 

21 def prepare_value(self, value): 

22 if isinstance(value, dict): 

23 return json.dumps(value) 

24 return value 

25 

26 def to_python(self, value): 

27 if not value: 

28 return {} 

29 if not isinstance(value, dict): 

30 try: 

31 value = json.loads(value) 

32 except json.JSONDecodeError: 

33 raise ValidationError( 

34 self.error_messages["invalid_json"], 

35 code="invalid_json", 

36 ) 

37 

38 if not isinstance(value, dict): 

39 raise ValidationError( 

40 self.error_messages["invalid_format"], 

41 code="invalid_format", 

42 ) 

43 

44 # Cast everything to strings for ease. 

45 for key, val in value.items(): 

46 if val is not None: 

47 val = str(val) 

48 value[key] = val 

49 return value 

50 

51 def has_changed(self, initial, data): 

52 """ 

53 Return True if data differs from initial. 

54 """ 

55 # For purposes of seeing whether something has changed, None is 

56 # the same as an empty dict, if the data or initial value we get 

57 # is None, replace it w/ {}. 

58 initial_value = self.to_python(initial) 

59 return super().has_changed(initial_value, data)