AngularJS and REST: perform DELETE action sending array of many items to remove

As far as I know, HTTP method DELETE doesn't take a body.

You would need an endpoint in your api to treat this "batch" request using an array in body

Or you could also launch a DELETE request on each resource via Angular without any body

Perhaps the best approach should be creating a POST request, where you would pass your array, and then you could treat the delete atomically:

Service

MyService.$inject = ['$resource'];
function MyService($resource) {
    return $resource('/echo/json', {}, {
        remove: {
           method: 'POST'
        }
});

Call

MyService.remove(categoriesToDelete, function(response) {
    console.log(response);
    // do something after deletion
}

REST method example

@POST
@Path("/json")
@Consumes(MediaType.APPLICATION_JSON)
public Response delete(final String array) {
    // You can convert your input to an array and then process it
    JSONArray responseArray = new JSONArray(array);

    System.out.println("Received input: " + responseArray);

    JSONObject jsonObject = new JSONObject();
    jsonObject.put("Array received", responseArray);

    return Response.status(Status.OK).entity(jsonObject.toString()).build();
}

Also, take a look at this post for further enlightenment.