compile error on deriving Identifiable

[qmx]

Setup

Versions

• Rust: rustc 1.23.0-beta.2 (c9107ee93 2017-12-08)
• Diesel: 1.0.0-rc1
• Database: sqlite
• Operating System linux x86_64

Feature Flags

• diesel: sqlite
• diesel_codegen:

Problem Description

What are you trying to accomplish?

trying to follow the association documentation https://docs.diesel.rs/diesel/associations/index.html and get a compilation error

What is the expected output?

no build errors

What is the actual output?

   Compiling association_error v0.1.0 (file:///home/qmx/tmp/association_error)
error[E0433]: failed to resolve. Use of undeclared type or module `payees`
  --> src/lib.rs:13:17
   |
13 | #[derive(Debug, Identifiable)]
   |                 ^^^^^^^^^^^^ Use of undeclared type or module `payees`
   |
   = note: this error originates in a macro outside of the current crate

error: aborting due to 2 previous errors

error: Could not compile `association_error`.

To learn more, run the command again with --verbose.

Are you seeing any additional errors?

Steps to reproduce

fully reproduceable repo here https://github.com/qmx/diesel-association-error-repro

Checklist

• I have already looked over the issue tracker for similar issues.

[sgrif]

You need to ensure that your payees module is in scope, with a line such as use schema::payees; (Assuming that you have your table! or infer_schema! declarations in a module called schema).

[qmx]

good call, any suggestion on how to make this more obvious at the docs? Happy to put a PR together, as I've read it a handful times and couldn't see.

[sgrif]

We mention this in a few other places (I think the associations docs mentions it?) we could probably put that same wording in the docs for Identifiable.

[jblachly]

We mention this in a few other places (I think the associations docs mentions it?) we could probably put that same wording in the docs for Identifiable.

Would also be nice in the guide (https://diesel.rs/guides/all-about-updates.html), example code for which puts everything (schema def macro and struct) together in lib.rs so that it is in scope; others following along since the getting started guide likely have the schema def macros in a separate file, which, if not brought in scope, leads to compilation failure as above.

Liking Diesel so far, thanks

[weiznich]

@jblachly We are happy to receive PR's that improve the guides. See this repository for the website source code.

[jblachly]

@jblachly We are happy to receive PR's that improve the guides. See this repository for the website source code.

et voila