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How can I check, if node has a new (unpublished) revision in node-template?

I have user created content. I use the content-moderation plugin, so user can update their nodes but the updates will only be published after moderation. I like to display a little batch (has new unpublished update) on the user-nodes, to give the user an information about the moderation state.

For nodes with new revision in draft-state shows drupal a “last-version”-link in node-links-menü. It must be possible to check, if there is a new revision in draft state (in preprocess_node). Who can help me and write a little php code for this check so I can generate a twig_variable “has_draft_state”.

Thanks in advance

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How can I check, if node has a new (unpublished) revision in node-template?

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