我用diesel orm 编译出错：
error: cannot find macro impl_Insertable! in this scope
--> :1:1
|
1 | impl_Insertable ! { ( struct_name = NewBook , table_name = books , struct_ty = NewBook , lifetimes = ( ) , ) , fields = [ { field_name: title ,column_name: title , field_ty: String , field_kind: regular , inner_field_ty: String , } { field_name: author , column_name: author , field_ty: String , field_kind: regular , inner_field_ty: String , } { field_name: published , column_name: published , field_ty: i8 , field_kind: regular , inner_field_ty: i8 , } ] , }
diesel = { version = "1.2.2", features = ["mysql"] } diesel_codegen = { version = "0.16.0",features = ["mysql"] } dotenv = "0.11.0"
rustc 1.27.0-nightly (ac3c2288f 2018-04-18)
谁遇到过这个问题，麻烦指点下，谢了
评论区
写评论diesel_codegen 已经不维护了，移除这个依赖就可以了
main.rs 文件里有这个
#[macro_use] extern crate diesel; #[macro_use] extern crate diesel_codegen; extern crate dotenv; 还是编译不了
使用#[macro_use] 可以使被注解crate中的宏应用到当前crate作用域中。