Error in using schema.rs from models.rs

[friendbear]

The environment is as follows, and the official diesel tutorial 1 worked fine.

rustc --version && cargo --version
rustc 1.57.0 (f1edd0429 2021-11-29)
cargo 1.57.0 (b2e52d7ca 2021-10-21)

However, a simple Web Server with two tables , I just can't get rid of the notation problem.

first

use diesel::{r2d2::ConnectionManager, PgConnection};
use serde::{Deserialize, Serialize};
use super::schema::*;

// or use super::schema::{users, invitations};

1. cargo check ...

src/models.rs:6:12
|... > src/models.rs:6:12
6 | use super::schema::{users, invitations}
| ^^^^^^
| unresolved import
| unresolved import
| help: a similar path exists: auth_service::schema.

However, if you specify the use clause for only one table, the error for that table will be removed.

use super::schema::users;

I'm very sorry, but could you please help me?

[weiznich]

This seems to be an issue with the way how you setup your module structure. It seems like you have a separate binary/library crate structure, but it's hard to tell that exactly without knowing details. Can you provide a full example how to reproduce this?

[friendbear]

@weiznich san.

Thank you for your reply.
The code in question is being implemented here.

https://github.com/friendbear/auth-service/tree/diesel-discussions-2979

It is only implemented up to the content of the question, and it does not work, but I hope you can check it.

[weiznich]

Ok the error mentioned in your first post happens because you include the models module from both the main.rs and the lib.rs file. Your lib.rs file also contains a schema module, while your main.rs file does not. You can thing about lib.rs vs main.rs as being two distinct crates. This implies there is just no schema module for the crate created by the main.rs file. Generally speaking if you want to have both a library and a binary you want to put everything that should be reusable as library into the lib.rs file and then import that crate via use your_crate_name::some_module in your main.rs. It's an antipattern to include modules in both "crates" via the mod keyword.

[friendbear]

Thank you very much for your very clear and precise answer.
I'm sorry that I don't understand the anti-pattern.

The errors in models.rs disappeared when I removed models from main.rs.
I will review the structure.

Thank you very much. 💚❄