display success alert when user updates profile info

atst/routes/users.py

@@ -1,11 +1,4 @@
-from flask import (
-    Blueprint,
-    render_template,
-    g,
-    redirect,
-    url_for,
-    request as http_request,
-)
+from flask import Blueprint, render_template, g, request as http_request
 from atst.forms.edit_user import EditUserForm
 from atst.domain.users import Users
 
@@ -24,8 +17,9 @@ def user():
 def update_user():
     user = g.current_user
     form = EditUserForm(http_request.form)
+    rerender_args = {"form": form, "user": user}
     if form.validate():
         Users.update(user, form.data)
-        return redirect(url_for("atst.home"))
-    else:
-        return render_template("user/edit.html", form=form, user=user)
+        rerender_args["updated"] = True
+
+    return render_template("user/edit.html", **rerender_args)