Add a generic DeleteForm and update AjaxDeleteView

InvenTree/InvenTree/forms.py

@@ -17,3 +17,19 @@ class HelperForm(forms.ModelForm):
         self.helper = FormHelper()
 
         self.helper.form_tag = False
+
+
+class DeleteForm(forms.Form):
+    """ Generic deletion form which provides simple user confirmation 
+    """
+
+    confirm_delete = forms.BooleanField(
+        required=False,
+        initial=False,
+        help_text='Confirm item deletion'
+    )
+
+    class Meta:
+        fields = [
+            'confirm_delete'
+        ]

InvenTree/InvenTree/views.py

@@ -17,6 +17,9 @@ from django.views.generic.base import TemplateView
 
 from part.models import Part
 
+from .forms import DeleteForm
+from .helpers import str2bool
+
 from rest_framework import views
 
 
@@ -300,13 +303,28 @@ class AjaxUpdateView(AjaxMixin, UpdateView):
         return self.renderJsonResponse(request, form, data)
 
 
-class AjaxDeleteView(AjaxMixin, DeleteView):
+class AjaxDeleteView(AjaxMixin, UpdateView):
 
     """ An 'AJAXified DeleteView for removing an object from the DB
     - Returns a HTML object (not a form!) in JSON format (for delivery to a modal window)
     - Handles deletion
     """
 
+    form_class = DeleteForm
+    ajax_form_title = "Delete Item"
+    ajax_template_name = "modal_delete_form.html"
+    context_object_name = 'item'
+
+    def get_object(self):
+        try:
+            self.object = self.model.objects.get(pk=self.kwargs['pk'])
+        except:
+            return None
+        return self.object
+
+    def get_form(self):
+        return self.form_class(self.get_form_kwargs())
+
     def get(self, request, *args, **kwargs):
         """ Respond to GET request
 
@@ -314,19 +332,15 @@ class AjaxDeleteView(AjaxMixin, DeleteView):
         - Return rendered form to client
         """
 
-        super(DeleteView, self).get(request, *args, **kwargs)
+        super(UpdateView, self).get(request, *args, **kwargs)
 
-        data = {
-            'id': self.get_object().id,
-            'delete': False,
-            'title': self.ajax_form_title,
-            'html_data': render_to_string(
-                self.ajax_template_name,
-                self.get_context_data(),
-                request=request)
-        }
+        form = self.get_form()
 
-        return JsonResponse(data)
+        context = self.get_context_data()
+
+        context[self.context_object_name] = self.get_object()
+
+        return self.renderJsonResponse(request, form, context=context)
 
     def post(self, request, *args, **kwargs):
         """ Respond to POST request
@@ -337,14 +351,24 @@ class AjaxDeleteView(AjaxMixin, DeleteView):
 
         obj = self.get_object()
         pk = obj.id
-        obj.delete()
+
+        form = self.get_form()
+
+        confirmed = str2bool(request.POST.get('confirm_delete', False))
+        context = self.get_context_data()
+
+        if confirmed:
+            obj.delete()
+        else:
+            form.errors['confirm_delete'] = ['Check box to confirm item deletion']
+            context[self.context_object_name] = self.get_object()
 
         data = {
             'id': pk,
-            'delete': True
+            'form_valid': confirmed
         }
 
-        return self.renderJsonResponse(request, data=data)
+        return self.renderJsonResponse(request, form, data=data, context=context)
 
 
 class IndexView(TemplateView):

InvenTree/templates/modal_delete_form.html

@@ -0,0 +1 @@
+{% extends "modal_form.html" %}