Implement unlinking labels from issues

scss/main.scss

@@ -165,3 +165,12 @@ select.form-control {
     margin-bottom: 0;
   }
 }
+
+.label-edit {
+  white-space: nowrap;
+  display: block;
+  form {
+    display: inline-block;
+    margin-bottom: .3rem;
+  }
+}

todosrht/blueprints/ticket.py

@@ -346,3 +346,31 @@ def ticket_add_label(owner, name, ticket_id):
             owner=tracker.owner.canonical_name(),
             name=name,
             ticket_id=ticket_id))
+
+@ticket.route("/<owner>/<name>/<int:ticket_id>/remove_label/<int:label_id>", methods=["POST"])
+@loginrequired
+def ticket_remove_label(owner, name, ticket_id, label_id):
+    tracker, _ = get_tracker(owner, name)
+    if not tracker:
+        abort(404)
+    ticket, access = get_ticket(tracker, ticket_id)
+    if not ticket:
+        abort(404)
+    if not TicketAccess.edit in access:
+        abort(401)
+    label = Label.query.filter(Label.id==label_id).first()
+    if not label:
+        abort(404)
+
+    ticket_label = (TicketLabel.query
+            .filter(TicketLabel.label_id == label_id)
+            .filter(TicketLabel.ticket_id == ticket_id)).first()
+
+    if ticket_label:
+        db.session.delete(ticket_label)
+        db.session.commit()
+
+    return redirect(url_for("ticket.ticket_GET",
+            owner=tracker.owner.canonical_name(),
+            name=name,
+            ticket_id=ticket_id))

todosrht/templates/ticket.html

@@ -126,10 +126,26 @@
         <dt class="col-md-3">Labels</dt>
         <dd class="col-md-9">
           {% for tl in ticket.labels %}
-            <div
-              class="label"
-              style="color: {{ tl.label.text_color }}; background-color: {{ tl.label.color }}"
-              >{{ tl.label.name }}
+            <div class="label-edit">
+              <div
+                class="label"
+                style="color: {{ tl.label.text_color }}; background-color: {{ tl.label.color }}"
+                >{{ tl.label.name }}
+              </div>
+              <form
+                method="POST"
+                action="{{
+                  url_for(".ticket_remove_label",
+                    owner=tracker.owner.canonical_name(),
+                    name=tracker.name,
+                    ticket_id=ticket.scoped_id,
+                    label_id=tl.label.id,
+                  )
+                }}">
+                <button type="submit" class="btn btn-outline-danger">
+                  {{ icon("times") }}
+                </button>
+              </form>
             </div>
           {% endfor %}
         </dd>