Cannot use multiple table_name for Insertable when also deriving Queryable
Mossop opened this issue · 1 comments
Setup
Versions
- Rust: 1.75.0
- Diesel: 2.1.4
- Database: N/A
- Operating System; macOS
Feature Flags
- diesel: default
Problem Description
#3535 added support for multiple table_name attributes when deriving Insertable but this breaks if you also attempt to derive Queryable.
What are you trying to accomplish?
I have two tables which share a common subset of columns so in my structs I want to split those columns into their own struct as it will allow me to share some behaviours. To do this I make all the structs derive Insertable and on the split out struct I set multiple table_name attributes and use the embed attribute. But I also want to be able to query these by making the structs Queryable (I have to manually list the columns rather than using all_columns but some macros take care of that) and as soon as I do the code fails to compile.
What is the expected output?
The code should compile.
What is the actual output?
error: expected a single table name attribute
Are you seeing any additional errors?
No
Steps to reproduce
The error reproduces with this simple file:
use diesel::{Insertable, Queryable};
diesel::table! {
user1 (id) {
id -> Varchar,
name -> Text,
}
}
diesel::table! {
user2 (id) {
id -> Varchar,
name -> Text,
}
}
#[derive(Queryable, Insertable)]
#[diesel(table_name = user1, table_name = user2)]
pub struct User {
id: String,
name: String,
}Checklist
- I have already looked over the issue tracker and the discussion forum for similar possible closed issues.
- This issue can be reproduced on Rust's stable channel. (Your issue will be
closed if this is not the case) - This issue can be reproduced without requiring a third party crate