admin(major): add YAMLField for attributes, add codemirror editor

passbook/admin/forms/base.py

@@ -0,0 +1,37 @@
+"""p2 form helpers"""
+from django import forms
+
+from passbook.admin.fields import YAMLField
+
+
+class TagModelForm(forms.ModelForm):
+    """Base form for models that have attributes"""
+
+    def __init__(self, *args, **kwargs):
+        # Check if we have an instance, load tags otherwise use an empty dict
+        instance = kwargs.get('instance', None)
+        tags = instance.tags if instance else {}
+        # Make sure all predefined tags exist in tags, and set default if they don't
+        predefined_tags = self._meta.model().get_predefined_tags()  # pylint: disable=no-member
+        for key, value in predefined_tags.items():
+            if key not in tags:
+                tags[key] = value
+        # Format JSON
+        kwargs['initial']['tags'] = tags
+        super().__init__(*args, **kwargs)
+
+    def clean_tags(self):
+        """Make sure all required tags are set"""
+        if hasattr(self.instance, 'get_required_keys') and hasattr(self.instance, 'tags'):
+            for key in self.instance.get_required_keys():
+                if key not in self.cleaned_data.get('tags'):
+                    raise forms.ValidationError("Tag %s missing." % key)
+        return self.cleaned_data.get('tags')
+
+# pylint: disable=too-few-public-methods
+class TagModelFormMeta:
+    """Base Meta class that uses the YAMLField"""
+
+    field_classes = {
+        'tags': YAMLField
+    }