Best way to handle multiple sequential logic checks in code

[acrolink]

I have some checks to do before returning a response to the user in controller: checking file existence in S3, checking some DB fields, checking results from external API’s. My question, how to best arrange the checks? I can use nested case statements but that does not look good. Any ideas?! Thank you.

[odd]

with/1 is especially used instead of nested case statements!

[al2o3cr]

with is definitely a good place to start, especially if your checks make sense as a sequence of logical operations.

There’s also the catch/throw mechanism, but it can turn your code into spaghetti pretty quickly.