In the examples for using mix phx.gen.html (and gen.schema) the schema usually has only one or two fields, e.g. from the docs:

mix phx.gen.html Accounts User users name:string age:integer

If I want to create a context and schema with more fields (~30), is there another way to get the CRUD generation aside from typing out everything at the command line (with potential typos)?

I can think of three options:

1. provide a file for input to mix phx.gen.html. Is that possible?
2. Alternatively, create a smaller schema with the generator and do migrations and bit of schema and heex edting to add everything else, which misses out on the convenience of the generator.
3. As mentioned above, carefully type out the entire mix gen command and hope all goes well.

Is there a best practice or common way to do this?

The goal behind this is to create work request, something like:

mix gen.phx.html Request Submission submissions name:string date:date…and so forth with many fields.

I realize the default templates may look unwieldy, but this is a quick and dirty demo to get user feedback.

Thanks for any guidance!