Skip to main content

Delete all entities Pro / Enterprise

This sample shows how to delete all items exposed by a REST API using Kreya scripting. You will:

  • Create a List Books operation that collects all book IDs into a user variable
  • Create a Delete Book operation that deletes a single book by ID using templating
  • Run a Kreya script that loops until there are no more items

Create the list books operation​

Create a REST operation named "List Books" that calls GET /books. Add the following operation script to extract IDs from the response and store them in the user variable bookIds.

kreya.rest.onCallCompleted(ctx => {
  if (!ctx.status.isSuccess || ctx.response.content.length == 0) {
    kreya.variables.delete('bookIds');
    return;
  }

  const bookIds = ctx.response.content.map(x => x.id);
  kreya.variables.set('bookIds', bookIds);
});

Create the delete book operation​

Create a REST operation named "Delete Book" that calls DELETE /books/{{ vars.bookId }}. Use templating to read the ID from the user variable bookId: When the script runs, it will set vars.bookId for each item.

Create and run the script​

Create a new Kreya script and paste the following code. It does the following:

  • List books to populate bookIds
  • Iterates bookIds, sets bookId, and invokes Delete Book for each
// list all books and store the ids in bookIds variable
// loop through all books, set the bookId for each book and invoke the delete book operation
await kreya.invokeOperation('./Get books');

const ids = kreya.variables.get('bookIds');
for (var i = 0; i < ids.length; i++) {
  kreya.variables.set('bookId', ids[i]);
  await kreya.invokeOperation('./Delete book');
}

You can use the user variables view (open via Project > User variables) to see the contents of bookIds and bookId.

What’s happening​

  • The List Books operation script writes all IDs to a user variable (bookIds).
  • The invoker script iterates those IDs, sets bookId, and invokes the Delete Book operation once per item.
  • The process repeats until List Books no longer finds any IDs, at which point the script exits.