#169 Team delete-restore

* adds restorable delete functionality to Team model
* refactors minor code model parts by introducing DeletableObjectMixin
* only non-deleted Teams can be chosen for sharing
* deleted Teams can be restored using the proper function on the backend admin
* deleted Teams do not provide
* adds migration

compensation/templates/compensation/detail/compensation/view.html

@@ -109,7 +109,7 @@
                     <tr>
                         <th scope="row">{% trans 'Shared with' %}</th>
                         <td class="align-middle">
-                            {% for team in obj.intervention.teams.all %}
+                            {% for team in obj.intervention.shared_teams %}
                                 {% include 'user/includes/team_data_modal_button.html' %}
                             {% endfor %}
                             <hr>

compensation/templates/compensation/detail/eco_account/view.html

@@ -87,7 +87,7 @@
                     <tr>
                         <th scope="row">{% trans 'Shared with' %}</th>
                         <td class="align-middle">
-                            {% for team in obj.teams.all %}
+                            {% for team in obj.shared_teams %}
                                 {% include 'user/includes/team_data_modal_button.html' %}
                             {% endfor %}
                             <hr>

ema/templates/ema/detail/view.html

@@ -73,11 +73,11 @@
                     <tr>
                         <th scope="row">{% trans 'Shared with' %}</th>
                         <td class="align-middle">
-                            {% for team in obj.teams.all %}
+                            {% for team in obj.shared_teams %}
                                 {% include 'user/includes/team_data_modal_button.html' %}
                             {% endfor %}
                             <hr>
-                            {% for user in obj.users.all %}
+                            {% for user in obj.user.all %}
                                 {% include 'user/includes/contact_modal_button.html' %}
                             {% endfor %}
                         </td>

intervention/templates/intervention/detail/view.html

@@ -125,7 +125,7 @@
                     <tr>
                         <th scope="row">{% trans 'Shared with' %}</th>
                         <td class="align-middle">
-                            {% for team in obj.teams.all %}
+                            {% for team in obj.shared_teams %}
                                 {% include 'user/includes/team_data_modal_button.html' %}
                             {% endfor %}
                             <hr>

konova/admin.py

@@ -98,6 +98,18 @@ class DeadlineAdmin(admin.ModelAdmin):
     ]
 
 
+class DeletableObjectMixinAdmin(admin.ModelAdmin):
+    class Meta:
+        abstract = True
+
+    def restore_deleted_data(self, request, queryset):
+        queryset = queryset.filter(
+            deleted__isnull=False
+        )
+        for entry in queryset:
+            entry.deleted.delete()
+
+
 class BaseResourceAdmin(admin.ModelAdmin):
     fields = [
         "created",
@@ -109,7 +121,7 @@ class BaseResourceAdmin(admin.ModelAdmin):
     ]
 
 
-class BaseObjectAdmin(BaseResourceAdmin):
+class BaseObjectAdmin(BaseResourceAdmin, DeletableObjectMixinAdmin):
     search_fields = [
         "identifier",
         "title",
@@ -126,13 +138,6 @@ class BaseObjectAdmin(BaseResourceAdmin):
             "deleted",
         ]
 
-    def restore_deleted_data(self, request, queryset):
-        queryset = queryset.filter(
-            deleted__isnull=False
-        )
-        for entry in queryset:
-            entry.deleted.delete()
-
 
 
 # Outcommented for a cleaner admin backend on production

konova/autocompletes.py

@@ -96,7 +96,9 @@ class ShareTeamAutocomplete(Select2QuerySetView):
     def get_queryset(self):
         if self.request.user.is_anonymous:
             return Team.objects.none()
-        qs = Team.objects.all()
+        qs = Team.objects.filter(
+            deleted__isnull=True
+        )
         if self.q:
             # Due to privacy concerns only a full username match will return the proper user entry
             qs = qs.filter(

konova/models/object.py

@@ -87,25 +87,15 @@ class BaseResource(UuidModel):
         super().delete()
 
 
-class BaseObject(BaseResource):
-    """
-    A basic object model, which specifies BaseResource.
+class DeletableObjectMixin(models.Model):
+    """ Wraps deleted field and related functionality
 
-    Mainly used for intervention, compensation, ecoaccount
     """
-    identifier = models.CharField(max_length=1000, null=True, blank=True)
-    title = models.CharField(max_length=1000, null=True, blank=True)
     deleted = models.ForeignKey("user.UserActionLogEntry", on_delete=models.SET_NULL, null=True, blank=True, related_name='+')
-    comment = models.TextField(null=True, blank=True)
-    log = models.ManyToManyField("user.UserActionLogEntry", blank=True, help_text="Keeps all user actions of an object", editable=False)
 
     class Meta:
         abstract = True
 
-    @abstractmethod
-    def set_status_messages(self, request: HttpRequest):
-        raise NotImplementedError
-
     def mark_as_deleted(self, user, send_mail: bool = True):
         """ Mark an entry as deleted
 
@@ -140,6 +130,25 @@ class BaseObject(BaseResource):
 
             self.save()
 
+
+class BaseObject(BaseResource, DeletableObjectMixin):
+    """
+    A basic object model, which specifies BaseResource.
+
+    Mainly used for intervention, compensation, ecoaccount
+    """
+    identifier = models.CharField(max_length=1000, null=True, blank=True)
+    title = models.CharField(max_length=1000, null=True, blank=True)
+    comment = models.TextField(null=True, blank=True)
+    log = models.ManyToManyField("user.UserActionLogEntry", blank=True, help_text="Keeps all user actions of an object", editable=False)
+
+    class Meta:
+        abstract = True
+
+    @abstractmethod
+    def set_status_messages(self, request: HttpRequest):
+        raise NotImplementedError
+
     def mark_as_edited(self, performing_user, request: HttpRequest = None, edit_comment: str = None):
         """ In case the object or a related object changed the log history needs to be updated
 
@@ -484,8 +493,8 @@ class ShareableObjectMixin(models.Model):
         Returns:
 
         """
-        directly_shared = self.users.filter(id=user.id).exists()
-        team_shared = self.teams.filter(
+        directly_shared = self.shared_users.filter(id=user.id).exists()
+        team_shared = self.shared_teams.filter(
             users__in=[user]
         ).exists()
         is_shared = directly_shared or team_shared
@@ -622,7 +631,9 @@ class ShareableObjectMixin(models.Model):
         Returns:
             teams (QuerySet)
         """
-        return self.teams.all()
+        return self.teams.filter(
+            deleted__isnull=True
+        )
 
     @abstractmethod
     def get_share_url(self):

user/admin.py

@@ -1,6 +1,7 @@
 from django.contrib import admin
 
-from user.models import UserNotification, UserActionLogEntry, User, Team
+from konova.admin import DeletableObjectMixinAdmin
+from user.models import User, Team
 
 
 class UserNotificationAdmin(admin.ModelAdmin):
@@ -64,10 +65,11 @@ class UserActionLogEntryAdmin(admin.ModelAdmin):
     ]
 
 
-class TeamAdmin(admin.ModelAdmin):
+class TeamAdmin(DeletableObjectMixinAdmin, admin.ModelAdmin):
     list_display = [
         "name",
         "description",
+        "deleted",
     ]
     search_fields = [
         "name",
@@ -78,6 +80,13 @@ class TeamAdmin(admin.ModelAdmin):
         "admins",
     ]
 
+    readonly_fields = [
+        "deleted"
+    ]
+
+    actions = [
+        "restore_deleted_data"
+    ]
 
 admin.site.register(User, UserAdmin)
 admin.site.register(Team, TeamAdmin)

user/forms.py

@@ -230,8 +230,8 @@ class NewTeamModalForm(BaseModalForm):
             team = Team.objects.create(
                 name=self.cleaned_data.get("name", None),
                 description=self.cleaned_data.get("description", None),
-                admins__in=[self.user],
             )
+            team.admins.add(self.user)
             members = self.cleaned_data.get("members", User.objects.none())
             if self.user.id not in members:
                 members = members.union(
@@ -335,6 +335,10 @@ class RemoveTeamModalForm(RemoveModalForm):
         super().__init__(*args, **kwargs)
         self.form_caption = _("ATTENTION!\n\nRemoving the team means all members will lose their access to data, based on this team! \n\nAre you sure to remove this team?")
 
+    def save(self):
+        self.instance.mark_as_deleted(self.user)
+        return self.instance
+
 
 class LeaveTeamModalForm(RemoveModalForm):
     def __init__(self, *args, **kwargs):

user/migrations/0005_team_deleted.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.1.3 on 2022-05-30 12:42
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('user', '0004_auto_20220530_1105'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='team',
+            name='deleted',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='+', to='user.useractionlogentry'),
+        ),
+    ]

user/models/team.py

@@ -1,10 +1,11 @@
 from django.db import models
 
-from konova.models import UuidModel
+from konova.models import UuidModel, DeletableObjectMixin
 from konova.utils.mailer import Mailer
+from user.models import UserActionLogEntry
 
 
-class Team(UuidModel):
+class Team(UuidModel, DeletableObjectMixin):
     """ Groups users in self managed teams. Can be used for multi-sharing of data
 
     """
@@ -16,6 +17,19 @@ class Team(UuidModel):
     def __str__(self):
         return self.name
 
+    def mark_as_deleted(self, user):
+        """ Creates an UserAction entry and stores it in the correct field
+
+        Args:
+            user (User): The performing user
+
+        Returns:
+
+        """
+        delete_action = UserActionLogEntry.get_deleted_action(user, "Team deleted")
+        self.deleted = delete_action
+        self.save()
+
     def send_mail_shared_access_given_team(self, obj_identifier, obj_title):
         """ Sends a mail to the team members in case of given shared access
 

user/models/user.py

@@ -160,3 +160,15 @@ class User(AbstractUser):
         else:
             token = self.api_token
         return token
+
+    @property
+    def shared_teams(self):
+        """ Wrapper for fetching active teams of this user
+
+        Returns:
+
+        """
+        shared_teams = self.teams.filter(
+            deleted__isnull=True
+        )
+        return shared_teams

user/views.py

@@ -163,7 +163,7 @@ def index_team_view(request: HttpRequest):
     template = "user/team/index.html"
     user = request.user
     context = {
-        "teams": user.teams.all(),
+        "teams": user.shared_teams,
         "tab_title": _("Teams"),
     }
     context = BaseContext(request, context).context