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fix: include column_name in DeriveColumn FromStr impl #2603

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Merged
merged 2 commits into from
May 26, 2025
Merged

fix: include column_name in DeriveColumn FromStr impl #2603

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cd990bd
fix: include column_name in DeriveColumn FromStr
lazulit3 May 22, 2025
d9fd68d
test: ensure Column::from_str recognizes column_name
lazulit3 May 22, 2025
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38 changes: 30 additions & 8 deletions sea-orm-macros/src/derives/column.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -70,14 +70,36 @@ pub fn impl_col_from_str(ident: &Ident, data: &Data) -> syn::Result<TokenStream>
}
};

let columns = data_enum.variants.iter().map(|column| {
let column_iden = column.ident.clone();
let column_str_snake = column_iden.to_string().to_snake_case();
let column_str_mixed = column_iden.to_string().to_lower_camel_case();
quote!(
#column_str_snake | #column_str_mixed => Ok(#ident::#column_iden)
)
});
let columns = data_enum
.variants
.iter()
.map(|column| {
let column_iden = column.ident.clone();
let column_str_snake = column_iden.to_string().to_snake_case();
let column_str_mixed = column_iden.to_string().to_lower_camel_case();

let mut column_name = column_str_snake.clone();
for attr in column.attrs.iter() {
if !attr.path().is_ident("sea_orm") {
continue;
}
attr.parse_nested_meta(|meta| {
if meta.path.is_ident("column_name") {
column_name = meta.value()?.parse::<LitStr>()?.value();
} else {
// Reads the value expression to advance the parse stream.
// Some parameters, such as `primary_key`, do not have any value,
// so ignoring an error occurred here.
let _: Option<Expr> = meta.value().and_then(|v| v.parse()).ok();
}
Ok(())
})?;
}
Ok::<TokenStream, syn::Error>(quote!(
#column_str_snake | #column_str_mixed | #column_name => Ok(#ident::#column_iden)
))
Comment on lines +81 to +100
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I copied the attribute parsing from impl_default_as_str (above in column.rs).

In cases where #[sea_orm(column_name = "...")] is not found, this results in a redundant string match like:

"artist_id" | "artistId" | "artist_id" => Ok(Column::ArtistId),

I recognize that this is not very clean— it would be nicer to only include additional strings when they differ.
(I don't have the patience to think through that, so I invite help if we care about the redundancy. <3)

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I think this would be fine as long as it doesnt trigger clippy warning

})
.collect::<Result<Vec<_>, _>>()?;

Ok(quote!(
#[automatically_derived]
Expand Down
6 changes: 6 additions & 0 deletions sea-orm-macros/tests/derive_entity_model_column_name_test.rs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
use std::str::FromStr;

use sea_orm::prelude::*;
use sea_orm::Iden;
use sea_orm::Iterable;
Expand Down Expand Up @@ -36,4 +38,8 @@ fn test_column_names() {
"ordersCount",
]
);

let col =
Column::from_str("lAsTnAmE").expect("column from str should recognize column_name attr");
assert!(matches!(col, Column::LastName))
}
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