change cache/network fetch behaviour of serviceworker.js

.idea/misc.xml

@@ -6,5 +6,5 @@
   <component name="NodePackageJsonFileManager">
     <packageJsonPaths />
   </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7 (school-apps)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7 (SchoolApps)" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file

.idea/school-apps.iml

@@ -23,7 +23,7 @@
       <excludeFolder url="file://$MODULE_DIR$/env" />
       <excludeFolder url="file://$MODULE_DIR$/schoolapps/staticcollect" />
     </content>
-    <orderEntry type="jdk" jdkName="Python 3.7 (school-apps)" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.7 (SchoolApps)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="TemplatesService">
@@ -48,7 +48,4 @@
       </list>
     </option>
   </component>
-  <component name="TestRunnerService">
-    <option name="PROJECT_TEST_RUNNER" value="Unittests" />
-  </component>
 </module>
\ No newline at end of file

schoolapps/static/common/serviceworker.js

@@ -96,7 +96,7 @@ function cacheFirstFetch(event) {
         // The response was not found in the cache so we look for it on the server
         return fetch(event.request)
           .then(function (response) {
-            // If request was success, add or update it in the cache
+            // If request was successful, add or update it in the cache
             event.waitUntil(updateCache(event.request, response.clone()));
 
             return response;
@@ -120,12 +120,12 @@ function networkFirstFetch(event) {
   event.respondWith(
     fetch(event.request)
       .then(function (response) {
-        // If request was success, add or update it in the cache
+        // If request was successful, add or update it in the cache
         event.waitUntil(updateCache(event.request, response.clone()));
         return response;
       })
       .catch(function (error) {
-        console.log("[SchoolApps PWA] Network request Failed. Serving content from cache: " + error);
+        console.log("[SchoolApps PWA] Network request failed. Serving content from cache: " + error);
         return fromCache(event.request);
       })
   );
@@ -138,7 +138,7 @@ function fromCache(request) {
   return caches.open(CACHE).then(function (cache) {
     return cache.match(request).then(function (matching) {
       if (!matching || matching.status === 404) {
-        return Promise.reject("no-match");
+        return caches.match(offlineFallbackPage);
       }
 
       return matching;