Trigger function with loop

[Sam23]

I have a contact_address (CA) table that collects addresses for a contact. I would like to upload those addresses to a text field in the contact  table for convenience. 
The table trigger when a user inserts or updates a record in CA table is supposed to loop through the  addresses  and put those into a field in the contact table. 

In the loop shown, if a contact has 2 records in the CA table, the result is two copies of the same address, the inserted record. How do I get it to iterate through the CA records rather than repeating the same address twice? Thanks so much.

[Volomeister]

Hi @Sam23

I suggest always creating separate triggered actions for insert, update and delete events.
Attached, you will find triggered action samples based on the simplified tables.
The should work as you described.

[Sam23]

Thank you so much! Volomeister!
Now my issue is that the trigger executes before the data is saved. So the concantenation uses the un-updated contact_address record. This must be a common issue. What are best practices to solve this?

[Sam23]

Sorry Volomeister - I realized my question doesn't make sense. 
Your code above works great.