Inside a pipe chain, how to execute one pipe line / exclude it based on say is_list(variable)? i.e. execute pipe line 5 only if variable is a list. Is that possible?

It might be possible to extract a function where you can pattern match and compose the query. Here’s what it could look like for the expires policy (actual code may depend on where your functions and usage are located): # Policy module def with_expiry(page, nil) do expires_params = "01-01-1970" |>…