edit parent_category in admin

products/forms.py

@@ -1,3 +1,4 @@
+from email.policy import default
 from dal import autocomplete
 
 from django import forms
@@ -10,5 +11,29 @@ class ProductTagForm(forms.ModelForm):
         model = Product
         fields = ('__all__')
         widgets = {
-            'category': autocomplete.TagSelect2(url='category-autocomplete')
+            'category': autocomplete.TagSelect2(url='category-tag-autocomplete')
         }
+
+class CategoryTagForm(forms.ModelForm):
+    name = forms.CharField(required=False, disabled=True)
+    parent_category = autocomplete.Select2ListCreateChoiceField(required=False, widget=autocomplete.Select2(url='category-tag-autocomplete', attrs={"data-tags": "true"}))
+    class Meta:
+        model = CategoryTag
+        fields = ('name', 'label', 'slug', 'parent_category')
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        if self.instance.id:
+            project_name_field = self.fields['parent_category']
+            parent_category = self.instance.parent
+            project_name_field.initial = parent_category
+            project_name_field.choices = [(parent_category, parent_category)]
+
+
+    def save(self, commit=True):
+        parent_name = self.cleaned_data.get('parent_category', None)
+        prefix = ''
+        if parent_name:
+            prefix = parent_name + '/'
+        self.instance.name =  prefix + self.instance.label
+        return super(CategoryTagForm, self).save(commit=commit)