Share intervention settings

* extends share link form to share settings form
* adds list of users with access to the intervention
* adds logic for removing these users
* enhances translations

intervention/forms.py

@@ -238,6 +238,7 @@ class ShareInterventionForm(BaseModalForm):
     url = forms.CharField(
         label=_("Share link"),
         label_suffix="",
+        help_text=_("Send this link to users who you want to have writing access on the data"),
         required=False,
         widget=TextToClipboardInput(
             attrs={
@@ -245,18 +246,38 @@ class ShareInterventionForm(BaseModalForm):
             }
         )
     )
+    users = forms.MultipleChoiceField(
+        label=_("Shared with"),
+        label_suffix="",
+        required=True,
+        help_text=_("Remove check to remove access for this user"),
+        widget=forms.CheckboxSelectMultiple(
+            attrs={
+                "class": "list-unstyled",
+            }
+        ),
+        choices=[]
+    )
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.form_title = _("Share")
-        self.form_caption = _("Send this link to users who you want to have writing access on the data.")
+        self.form_caption = _("Share settings for {}").format(self.instance.identifier)
         self.template = "modal/modal_form.html"
-        self.render_submit = False
 
         # Make sure an access_token is set
         if self.instance.access_token is None:
             self.instance.generate_access_token()
 
+        self._init_fields()
+
+    def _init_fields(self):
+        """ Wraps initializing of fields
+
+        Returns:
+
+        """
+        # Initialize share_link field
         self.share_link = self.request.build_absolute_uri(
             reverse("intervention:share", args=(self.instance.id, self.instance.access_token,))
         )
@@ -264,3 +285,23 @@ class ShareInterventionForm(BaseModalForm):
             "url",
             self.share_link
         )
+
+        # Initialize users field
+        users = self.instance.users.all()
+        choices = []
+        for n in users:
+            choices.append(
+                (n.id, n.username)
+            )
+        self.fields["users"].choices = choices
+        u_ids = list(users.values_list("id", flat=True))
+        self.initialize_form_field(
+            "users",
+            u_ids
+        )
+
+    def save(self):
+        accessing_users = User.objects.filter(
+            id__in=self.cleaned_data["users"]
+        )
+        self.instance.users.set(accessing_users)

intervention/views.py

@@ -254,12 +254,21 @@ def create_share_view(request: HttpRequest, id: str):
     user = request.user
     intervention = get_object_or_404(Intervention, id=id)
     form = ShareInterventionForm(request.POST or None, instance=intervention, request=request)
-    if request.method != "GET":
+    if request.method == "POST":
+        if form.is_valid():
+            form.save()
+            messages.info(
+                request,
+                _("Share settings updated")
+            )
+            return redirect(request.META.get("HTTP_REFERER", "home"))
+    elif request.method == "GET":
+        context = {
+            "form": form,
+        }
+        context = BaseContext(request, context).context
+        return render(request, form.template, context)
+    else:
         raise NotImplementedError
-    context = {
-        "form": form,
-    }
-    context = BaseContext(request, context).context
-    return render(request, form.template, context)