I would like to add a function to my project that is available throughout all modules without aliasing/importing it. How should I go about it? I know I can include it in my *_web.ex file so it becomes available in controllers, views, … but I want to use it in business logic as well. Like the title o…

Thank you (both) for the responses! As for the data, most checks are if a in ["", nil] (without the list), because for those fields in the database we can have nil or the empty string. In the database we want the difference, since nil is the default (aka: never set) and the empty string can be ‘set…

There’s nothing automatically imported besides Kernel in elixir. You either need to import explicitly or have a macro doing the import.

[image] LostKobrakai: You either need to import explicitly or have a macro doing the import. Yup. Elixir is explicit about imports by design, with Kernel being the single exception. You will need to define some sort of MyProject.Kernel and import it wherever you want to use its functions. …

[image] jeroenbourgois: Most checks are if a in ["", nil] (without the list), because for those fields in the database we can have nil or the empty string. That’s a very common situation, makes perfect sense! Generally, rather than scattering these checks across my codebase, I’d try to exert…

I’ve dealt with this a few times also in some legacy codebases and the best solution I found is to use custom Ecto types that know how to deal with these values, you skip the step where you have to deal manually with these kind of checks.

Man, this forum is unforgiving for inadvertent submits! But that is neither here not there. I’m gonna triple down on custom Ecto types . If they happen to sound scary, they really aren’t. If your team is resistant at all, do a book club (or “doc club” if you will) on them and you’ll realize they …

I don’t see why there would be any difficulties or traction with custom ecto types, for example for strings that are not normalized in database you could do: defmodule NonNormalizedString do use Ecto.Type def type, do: :string def cast(str) when is_binary(str), do: str def cast(_), do: :er…

[image] D4no0: def dump(str), do: str You’re a missing a guard here.

[image] D4no0: I don’t see why there would be any difficulties or traction with custom ecto types, for example for strings that are not normalized in database you could do: Me neither but I’ve dealt with people who are resistant.

How to extend kernel module without aliasing/importing it?

Questions & Help Questions

sodapopcan November 17, 2023, 4:32pm 10

Me neither but I’ve dealt with people who are resistant.