Create a Select List table from subitems from another table

I am new to Coda, and was playing around with a situation where our business interacts and sells components to multiple OEM’s of large systems. In this manner, I would like to have a table, “OEMs”, that lists each major OEM and then has a subitem column next to it for each model which that OEM makes.

I would then tie this to other tables with further data (e.g. a table listing various regions / states etc., and marking which OEM’s operate there). The OEM column would be a selectable list of text related to the OEMs table giving you the option of each company name. Because I want to tie the OEM to a specific region in another table, I also want to have a “model” column that I can select which model is used in that region.

Here’s what the “OEMs” table could look like:

While I could technically make the main column of this table “models” and it would be simpler, I feel like readability and from a category standpoint “OEM” is the top level.

Ideally, I would have the “regional” table with a column “OEMs”, which lists the “OEM1”, “OEM2” and so on for options, and if I select “OEM1”, the next column “models” would automatically filter only the options from “OEM1” - “OEM1 model 1”, “OEM1 model 2”, and so on.

Is this possible? I’ve tried coding it myself but keep hitting a wall. Thanks!

Edited to add:

I was trying some of this as inspiration but still not getting it right:

Can you do a conditional selection from one table to another? - Ask the Community - Coda Maker Community

Hi Bradley,

Welcome to the community!

I’m not sure I understood the data model you had in mind, but I think grouping will be more useful to achieve what you want than subitems (as far as I know subitems and items must belong to the same table).

Here you have a small example

Hope this helps,

Pablo

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Thanks Pablo! I will play around with grouping some and respond back if it fits my needs. I didn’t initially think it would do what I’m looking for and tunnel visioned onto subitems, but I’ll give it a shot!

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Update -

This worked! Thank you for the suggestion. I used this formula similar to the other post to make the selectable list of matching models to the OEM in another table for those wondering:

image

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