prevent this.USER_LEVEL_PROJECTS from being null

src/App.vue

@@ -206,9 +206,10 @@ export default {
       return null;
     },
     isAdmin: function () {
-      return (
+      return this.USER_LEVEL_PROJECTS &&
         this.USER_LEVEL_PROJECTS[this.project.slug] === "Administrateur projet"
-      );
+        ? true
+        : false;
     },
   },
 

src/services/map-api.js

+import axios from 'axios';
+import store from '../store'
+
+const baseUrl = store.state.configuration.VUE_APP_DJANGO_API_BASE;
+
+const mapAPI = {
+
+  async postOrPut({ basemap, projectSlug, newBasemapIds }) {
+    basemap["project"] = projectSlug
+    if (newBasemapIds.includes(basemap.id)) {
+      return axios
+        .post(`${baseUrl}base-maps/`, basemap)
+        .then((response) => response)
+        .catch((error) => {
+          throw error;
+        });
+    } else {
+      return axios
+        .put(`${baseUrl}base-maps/${basemap.id}/`, basemap)
+        .then((response) => response)
+        .catch((error) => {
+          throw error;
+        });
+    }
+  }
+
+
+}
+
+export default mapAPI;