Stefan Matei

@Guikingone , have you found a solution. I checked the source code and the function that actually writes the positions (doRewritePositions()) is called after the callbacks. So overwriting after_add doesn't...

I made a fork and added and extra option named position_field_first_value. If you still need it feel free to change the vcs source in composer.json to https://github.com/stevro/symfony-collection

I'm not sure I understand your question. I attach a sample of code for using it in your deploy: $helper = $this->getContext()->getHelperSet('question'); $question = new ConfirmationQuestion('Continue with this action?', false);...

Yes. You can use in your deployment scripts where you have access to the context.

For whoever is interested, a workaround is to manually create the config in config/packages/gos_web_socket.yaml as described here https://github.com/GeniusesOfSymfony/WebSocketBundle/blob/3.x/docs/index.md#configure-the-bundle