Using |column

You can extract the same column from a list of dictionaries with the |column filter.

• automation
• output

• start:
    set:
      people:
        kina:
          name: Kina Halpue
          email: kina@cerb.example
        milo:
          name: Milo Dade
          email: milo@cerb.example 
    return:
      emails: {{people|column('email')|join(', ')}}

• __return:
    emails: kina@cerb.example, milo@cerb.example

Using |map

You can extract the same column from a list of dictionaries with the |map filter.

• automation
• output

• start:
    set:
      people:
        kina:
          name: Kina Halpue
          email: kina@cerb.example
        milo:
          name: Milo Dade
          email: milo@cerb.example
    return:
      emails: {{people|map((v)=>v['email'])|join(', ')}}

• __return:
    emails: kina@cerb.example, milo@cerb.example