allow admins change registration providers (#11145)

## Purpose
allow admins change registration providers

## Changes
- add a dropdown menu to provider section on admin UI
- add endpoint that allows to update registration provider

## Ticket
https://openscience.atlassian.net/browse/ENG-7977

Author: antkryt

admin/nodes/urls.py

@@ -19,6 +19,7 @@
     re_path(r'^(?P<guid>[a-z0-9]+)/schema_responses/$', views.AdminNodeSchemaResponseView.as_view(),
         name='schema-responses'),
     re_path(r'^(?P<guid>[a-z0-9]+)/update_embargo/$', views.RegistrationUpdateEmbargoView.as_view(), name='update-embargo'),
+    re_path(r'^(?P<guid>[a-z0-9]+)/change_provider/$', views.RegistrationChangeProviderView.as_view(), name='change-provider'),
     re_path(r'^(?P<guid>[a-z0-9]+)/remove/$', views.NodeDeleteView.as_view(), name='remove'),
     re_path(r'^(?P<guid>[a-z0-9]+)/restore/$', views.NodeDeleteView.as_view(), name='restore'),
     re_path(r'^(?P<guid>[a-z0-9]+)/confirm_spam/$', views.NodeConfirmSpamView.as_view(), name='confirm-spam'),

admin/nodes/views.py

@@ -16,7 +16,7 @@
     ListView,
     TemplateView,
 )
-from django.shortcuts import redirect, reverse
+from django.shortcuts import redirect, reverse, get_object_or_404
 from django.urls import reverse_lazy
 
 from admin.base.utils import change_embargo_date
@@ -33,6 +33,7 @@
     NodeLog,
     AbstractNode,
     Registration,
+    RegistrationProvider,
     RegistrationApproval,
     SpamStatus
 )
@@ -398,6 +399,28 @@ def post(self, request, *args, **kwargs):
         return redirect(self.get_success_url())
 
 
+class RegistrationChangeProviderView(NodeMixin, View):
+    """ Allows authorized users to update provider of a registration.
+    """
+    permission_required = ('osf.change_node')
+
+    def post(self, request, *args, **kwargs):
+        provider_id = int(request.POST.get('provider_id'))
+        provider = get_object_or_404(RegistrationProvider, pk=provider_id)
+        registration = self.get_object()
+
+        try:
+            provider.validate_schema(registration.registration_schema)
+            registration.provider = provider
+            registration.save()
+        except ValidationError as exc:
+            messages.error(request, str(exc))
+        else:
+            messages.success(request, 'Provider successfully changed.')
+
+        return redirect(self.get_success_url())
+
+
 class NodeSpamList(PermissionRequiredMixin, ListView):
     """ Allows authorized users to view a list of nodes that have a particular spam status.
     """

admin/templates/nodes/node.html

@@ -78,11 +78,9 @@ <h2>{{ node.type|cut:'osf.'|title }}: <b>{{ node.title }}</b> <a href="{{ node.a
                     </tr>
                     <tr>
                         <td>Provider</td>
-                        {% if node.provider %}
-                            <td><a href="{{ node | reverse_registration_provider }}">{{ node.provider.name }}</a></td>
-                        {% else %}
-                            <td>None</td>
-                        {% endif %}
+                        <td>
+                            {% include "nodes/registration_provider.html" with node=node %}
+                        </td>
                     </tr>
                     <tr>
                         <td>Parent</td>

admin/templates/nodes/registration_provider.html

@@ -0,0 +1,17 @@
+{% load node_extras %}
+
+{% if node.provider %}
+    <form id="provider-list-form"  method="post" action="{% url 'nodes:change-provider' guid=node.guid %}">
+        {% csrf_token %}
+        <select id="provider-list" name="provider_id" onchange="this.form.submit()">
+            <option value="{{ node.provider.id }}">{{ node.provider.name }}</option>  <!-- default value -->
+            {% for provider in node.available_providers %}
+                {% if not provider.id == node.provider.id %}
+                    <option value="{{ provider.id }}">{{ provider.name }}</option>
+                {% endif %}
+            {% endfor %}
+        </select>
+    </form>
+{% else %}
+    <p>None</p>
+{% endif %}

osf/models/registrations.py

@@ -368,6 +368,14 @@ def date_withdrawn(self):
     def withdrawal_justification(self):
         return getattr(self.root.retraction, 'justification', None)
 
+    @property
+    def available_providers(self):
+        """Return all providers that support current registration schema."""
+        schema = self.registration_schema
+        if not schema:
+            return RegistrationProvider.objects.none()
+        return RegistrationProvider.objects.filter(schemas=schema)
+
     @property
     def provider_specific_metadata(self):
         """Surfaces the additional_metadata fields supported by the provider.