update

update

The update function updates data in an object store in the indexeddb database. If the primaryKey value doesn't exist yet, the data will get inserted.

Parameters

• objectstore:
  • An object store or an object store promise object.
• data
  • The object you want to store
• key:
  • The primary key for the object of no keyPath is defined and autoincrement is turned off on the object store.
  • Optional
    • Default: undefined

Returns

The function returns a promise object with 2 callbacks

• Success callback
  • The object is updated successfully
  • The first argument contains the object with the primarykey (if the object store is defined with a keyPath).
  • The second argument contains the primarykey for the object.
  • The third argument contains the transaction.
  • The forth argument contains the original indexeddb event arguments
• Error callback
  • Retrieving data failed
  • The argument object contains a custom error object.

Errors

• DataError
  • The provided key isn't a valid key or key range.
  • Or an external key is provided while the object store expects a keyPath key
  • Or the provided key isn't a valid key (must be an array, string, date or number).
• ReadOnlyError
  • You are trying to remove data in a readonly transaction.
• TransactionInactiveError
  • You are trying to open a cursor outside or on an inactive transaction.
• DataCloneError
  • The data you are trying to insert could not be cloned. Your data probably contains a function which can not be cloned by default. Try using the serialize method to insert the data.
• InvalidStateError
  • You are trying to modify data on a removed object store.

Example

{{ var dbpromise = linq2indexedDB.core.db("name", 1); var transactionPromise = linq2indexedDB.core.transaction(dbpromise, "objectstore"); var objectStorePromise = linq2indexedDB.core.objectStore(transactionPromise, "objectstore"); linq2indexedDB.core.update(objectStorePromise, {}, 1).then(success, error); function success(args){ var data = args0; var primaryKey= args1; var transaction= args2; var orignalevent = args3; } function error(args){ var error= args; } }}