Added delete function to like AND favorites

2022-10-04 09:14:14 +02:00
parent 4f108419cd
commit be666ac326
3 changed files with 88 additions and 115 deletions
@@ -0,0 +1,65 @@
+function removeFromIndexDB(storename, key) {
+    dbRequest = indexedDB.open(storename);
+
+    dbRequest.onerror = function (event) {
+        reject(Error("Error text"));
+    };
+
+    dbRequest.onupgradeneeded = function (event) {
+        // Objectstore does not exist. Nothing to load
+        event.target.transaction.abort();
+        reject(Error('Not found'));
+    };
+
+    dbRequest.onsuccess = function (event) {
+        var database = event.target.result;
+
+        const request = database.transaction(storename, 'readwrite')
+            .objectStore(storename).delete(key);
+        request.onsuccess = () => {
+            console.log(`object deleted : ${request.result}`);
+        }
+        request.onerror = (err) => {
+            console.error(`Error to delete object: ${err}`)
+        }
+    }
+}
+function loadFromIndexedDB(storeName) {
+    return new Promise(
+        function (resolve, reject) {
+            dbRequest = indexedDB.open(storeName);
+
+            dbRequest.onerror = function (event) {
+                reject(Error("Error text"));
+            };
+
+            dbRequest.onupgradeneeded = function (event) {
+                // Objectstore does not exist. Nothing to load
+                event.target.transaction.abort();
+                reject(Error('Not found'));
+            };
+
+            dbRequest.onsuccess = function (event) {
+                var database = event.target.result;
+                var transaction = database.transaction([storeName]);
+                var objectStore = transaction.objectStore(storeName);
+                var objectRequest = objectStore.getAll();
+
+                objectRequest.onerror = function (event) {
+                    reject(Error('Error text'));
+                    console.log("Error with the indexdb");
+                };
+
+                objectRequest.onsuccess = function (event) {
+                    if (objectRequest.result) {
+                        resolve(objectRequest.result);
+                    }
+                    else {
+                        reject(Error('object not found'));
+                        console.log("object not found");
+                    }
+                };
+            };
+        }
+    );
+}