How do I tag ways that are part of a relation during osm2pgsql import?

Help and support
1

Hi everyone.

I’m importing OSM data using osm2pgsql, and am using a custom lua script to tag ways.

I want to tag ways that are part of relation. In my particular case, I want to tag ways that are part of a bicycle route, so that I can use this information in my rendering styles.

The osm2pgsql documentation mentions relations in a function called filter_tags_relation_member, but this seems to support returning additional information only about the relation, not about the member ways.

Alternatively, I could run data updates after import, but because of continuous updates from OSM, that quickly seems to become a patchwork of tasks.

I’m quite new to this, but I am a developer, so if there’s some way to achieve this during import that isn’t obvious to me, I’d appreciate if someone would point me in the right direction.

Thank you in advance.

2

You mention the filter_tags_relation_member function. It looks like you are using the “old” pgsql output, which is not developed any more. Please have a look at the flex output instead. It is much more flexible and has the functionality you need, specifically you need two-stage processing. Also have a look at this example config which shows how to work with route relations.