Improve derive syntax

.github/workflows/ci.yml

@@ -193,6 +193,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: version
+
       - name: Test diesel (nightly)
         if: matrix.rust == 'nightly'
         uses: actions-rs/cargo@v1
@@ -302,7 +303,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: nightly-2021-04-01
+          toolchain: 1.51.0
           profile: minimal
           override: true
       - name: Cache cargo registry

CHANGELOG.md

@@ -70,6 +70,8 @@ for Rust libraries in [RFC #1105](https://github.com/rust-lang/rfcs/blob/master/
 
 * Added support for the `FROM ONLY <table>` clause in Postgresql
 
+* Added support for all the derive attributes being inside `#[diesel(...)]`
+
 ### Removed
 
 * All previously deprecated items have been removed.
@@ -243,8 +245,20 @@ for Rust libraries in [RFC #1105](https://github.com/rust-lang/rfcs/blob/master/
 * `diesel::dsl::any` and `diesel::dsl::all` are now deprecated in 
    favour of `ExpressionMethods::eq_any()` and `ExpressionMethods::ne_all()`
 
+* All the diesel derive attributes that are not inside `#[diesel(...)]`
+
 ### Upgrade Notes
 
+### Derive attributes
+<a name="2-0-0-derive-attributes"></a>
+
+We have updated all of our diesel derive attributes to follow the patterns that are used
+widely in the rust ecosystem. This means that all of them need to be wrapped by `#[diesel()]` now. And you can specify multiple attributes on the same line now separated by `,`.
+
+This is backward compatible and thus all of your old attributes will still work, but with
+warnings. The attributes can be upgraded by either looking at the warnings or by reading
+diesel derive documentation reference.
+
 #### Replacement of `NonAggregate` with `ValidGrouping`
 <a name="2-0-0-upgrade-non-aggregate"></a>
 

diesel/src/associations/belongs_to.rs

@@ -58,7 +58,7 @@ pub trait BelongsTo<Parent> {
 /// #
 /// # #[derive(Debug, PartialEq)]
 /// # #[derive(Identifiable, Queryable, Associations)]
-/// # #[belongs_to(User)]
+/// # #[diesel(belongs_to(User))]
 /// # pub struct Post {
 /// #     id: i32,
 /// #     user_id: i32,

diesel/src/associations/mod.rs

@@ -1,23 +1,23 @@
 //! Traits related to relationships between multiple tables.
 //!
 //! Associations in Diesel are always child-to-parent.
-//! You can declare an association between two records with `#[belongs_to]`.
+//! You can declare an association between two records with `#[diesel(belongs_to)]`.
 //! Unlike other ORMs, Diesel has no concept of `has many`
 //!
 //! ```rust
 //! # include!("../doctest_setup.rs");
 //! use schema::{posts, users};
 //!
 //! #[derive(Identifiable, Queryable, PartialEq, Debug)]
-//! #[table_name = "users"]
+//! #[diesel(table_name = users)]
 //! pub struct User {
 //!     id: i32,
 //!     name: String,
 //! }
 //!
 //! #[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]
-//! #[belongs_to(User)]
-//! #[table_name = "posts"]
+//! #[diesel(belongs_to(User))]
+//! #[diesel(table_name = posts)]
 //! pub struct Post {
 //!     id: i32,
 //!     user_id: i32,
@@ -40,12 +40,12 @@
 //! # }
 //! ```
 //!
-//! Note that in addition to the `#[belongs_to]` annotation, we also need to
+//! Note that in addition to the `#[diesel(belongs_to)]` annotation, we also need to
 //! `#[derive(Associations)]`
 //!
-//! `#[belongs_to]` is given the name of the struct that represents the parent.
+//! `#[diesel(belongs_to)]` is given the name of the struct that represents the parent.
 //! Both the parent and child must implement [`Identifiable`].
-//! The struct given to `#[belongs_to]` must be in scope,
+//! The struct given to `#[diesel(belongs_to)]` must be in scope,
 //! so you will need `use some_module::User` if `User` is defined in another module.
 //!
 //! If the parent record is generic over lifetimes, they can be written as `'_`.
@@ -58,15 +58,15 @@
 //! # use std::borrow::Cow;
 //! #
 //! #[derive(Identifiable)]
-//! #[table_name = "users"]
+//! #[diesel(table_name = users)]
 //! pub struct User<'a> {
 //!     id: i32,
 //!     name: Cow<'a, str>,
 //! }
 //!
 //! #[derive(Associations)]
-//! #[belongs_to(parent = "User<'_>")]
-//! #[table_name = "posts"]
+//! #[diesel(belongs_to(User<'_>))]
+//! #[diesel(table_name = posts)]
 //! pub struct Post {
 //!     id: i32,
 //!     user_id: i32,
@@ -79,8 +79,8 @@
 //!
 //! By default, Diesel assumes that your foreign keys will follow the convention `table_name_id`.
 //! If your foreign key has a different name,
-//! you can provide the `foreign_key` argument to `#[belongs_to]`.
-//! For example, `#[belongs_to(Foo, foreign_key = "mykey")]`.
+//! you can provide the `foreign_key` argument to `#[diesel(belongs_to)]`.
+//! For example, `#[diesel(belongs_to(Foo, foreign_key = mykey))]`.
 //!
 //! Associated data is typically loaded in multiple queries (one query per table).
 //! This is usually more efficient than using a join,
@@ -106,7 +106,7 @@
 //! # }
 //! #
 //! # #[derive(Debug, PartialEq, Identifiable, Queryable, Associations)]
-//! # #[belongs_to(User)]
+//! # #[diesel(belongs_to(User))]
 //! # pub struct Post {
 //! #     id: i32,
 //! #     user_id: i32,
@@ -160,7 +160,7 @@
 //! #
 //! # #[derive(Debug, PartialEq)]
 //! # #[derive(Identifiable, Queryable, Associations)]
-//! # #[belongs_to(User)]
+//! # #[diesel(belongs_to(User))]
 //! # pub struct Post {
 //! #     id: i32,
 //! #     user_id: i32,
@@ -214,7 +214,7 @@
 //! #
 //! # #[derive(Debug, PartialEq)]
 //! # #[derive(Identifiable, Queryable, Associations)]
-//! # #[belongs_to(User)]
+//! # #[diesel(belongs_to(User))]
 //! # pub struct Post {
 //! #     id: i32,
 //! #     user_id: i32,
@@ -274,15 +274,15 @@
 //! # }
 //! #
 //! # #[derive(Debug, PartialEq, Identifiable, Queryable, Associations)]
-//! # #[belongs_to(User)]
+//! # #[diesel(belongs_to(User))]
 //! # pub struct Post {
 //! #     id: i32,
 //! #     user_id: i32,
 //! #     title: String,
 //! # }
 //! #
 //! # #[derive(Debug, PartialEq, Identifiable, Queryable, Associations)]
-//! # #[belongs_to(Post)]
+//! # #[diesel(belongs_to(Post))]
 //! # pub struct Comment {
 //! #     id: i32,
 //! #     post_id: i32,

diesel/src/deserialize.rs

@@ -179,7 +179,7 @@ pub type Result<T> = result::Result<T, Box<dyn Error + Send + Sync>>;
 /// #[derive(Queryable, PartialEq, Debug)]
 /// struct User {
 ///     id: i32,
-///     #[diesel(deserialize_as = "LowercaseString")]
+///     #[diesel(deserialize_as = LowercaseString)]
 ///     name: String,
 /// }
 ///
@@ -273,7 +273,7 @@ pub use diesel_derives::Queryable;
 /// # use diesel::sql_query;
 /// #
 /// #[derive(QueryableByName, PartialEq, Debug)]
-/// #[table_name = "users"]
+/// #[diesel(table_name = users)]
 /// struct User {
 ///     id: i32,
 ///     name: String,
@@ -323,10 +323,10 @@ pub use diesel_derives::Queryable;
 /// }
 ///
 /// #[derive(QueryableByName, PartialEq, Debug)]
-/// #[table_name = "users"]
+/// #[diesel(table_name = users)]
 /// struct User {
 ///     id: i32,
-///     #[diesel(deserialize_as = "LowercaseString")]
+///     #[diesel(deserialize_as = LowercaseString)]
 ///     name: String,
 /// }
 ///

diesel/src/migration/mod.rs

@@ -21,7 +21,7 @@ pub type Result<T> = std::result::Result<T, Box<dyn Error + Send + Sync>>;
 /// in order, therefore two different instances of this type
 /// must be sortable
 #[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, FromSqlRow, AsExpression)]
-#[sql_type = "Text"]
+#[diesel(sql_type = Text)]
 pub struct MigrationVersion<'a>(Cow<'a, str>);
 
 impl<'a> MigrationVersion<'a> {

diesel/src/mysql/types/date_and_time.rs

@@ -20,10 +20,10 @@ use crate::sql_types::{Date, Datetime, Time, Timestamp};
 #[repr(C)]
 #[derive(Debug, Clone, Copy, AsExpression, FromSqlRow)]
 #[non_exhaustive]
-#[sql_type = "Timestamp"]
-#[sql_type = "Time"]
-#[sql_type = "Date"]
-#[sql_type = "Datetime"]
+#[diesel(sql_type = Timestamp)]
+#[diesel(sql_type = Time)]
+#[diesel(sql_type = Date)]
+#[diesel(sql_type = Datetime)]
 pub struct MysqlTime {
     /// [Year field](https://dev.mysql.com/doc/dev/mysql-server/latest/structMYSQL__TIME.html#af585231d3ed0bc2fa389856e61e15d4e)
     pub year: libc::c_uint,

diesel/src/mysql/types/mod.rs

@@ -177,5 +177,5 @@ impl HasSqlType<Unsigned<BigInt>> for Mysql {
     doc = " [`chrono::NaiveDateTime`]: https://docs.rs/chrono/0.4.19/chrono/naive/struct.NaiveDateTime.html"
 )]
 #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-#[mysql_type = "DateTime"]
+#[diesel(mysql_type(name = "DateTime"))]
 pub struct Datetime;

diesel/src/pg/serialize/write_tuple.rs

@@ -24,7 +24,7 @@ use crate::serialize::{self, Output};
 /// #     use std::io::Write;
 /// #
 ///     #[derive(SqlType)]
-///     #[postgres(type_name = "my_type")]
+///     #[diesel(postgres_type(name = "my_type"))]
 ///     struct MyType;
 ///
 ///     #[derive(Debug)]

diesel/src/pg/types/date_and_time/mod.rs

@@ -14,15 +14,15 @@ mod quickcheck_impls;
 mod std_time;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, AsExpression, FromSqlRow)]
-#[sql_type = "Timestamp"]
-#[sql_type = "Timestamptz"]
+#[diesel(sql_type = Timestamp)]
+#[diesel(sql_type = Timestamptz)]
 /// Timestamps are represented in Postgres as a 64 bit signed integer representing the number of
 /// microseconds since January 1st 2000. This struct is a dumb wrapper type, meant only to indicate
 /// the integer's meaning.
 pub struct PgTimestamp(pub i64);
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, AsExpression, FromSqlRow)]
-#[sql_type = "Date"]
+#[diesel(sql_type = Date)]
 /// Dates are represented in Postgres as a 32 bit signed integer representing the number of julian
 /// days since January 1st 2000. This struct is a dumb wrapper type, meant only to indicate the
 /// integer's meaning.
@@ -32,15 +32,15 @@ pub struct PgDate(pub i32);
 /// microseconds since midnight. This struct is a dumb wrapper type, meant only to indicate the
 /// integer's meaning.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, AsExpression, FromSqlRow)]
-#[sql_type = "Time"]
+#[diesel(sql_type = Time)]
 pub struct PgTime(pub i64);
 
 /// Intervals in Postgres are separated into 3 parts. A 64 bit integer representing time in
 /// microseconds, a 32 bit integer representing number of days, and a 32 bit integer
 /// representing number of months. This struct is a dumb wrapper type, meant only to indicate the
 /// meaning of these parts.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, AsExpression, FromSqlRow)]
-#[sql_type = "Interval"]
+#[diesel(sql_type = Interval)]
 pub struct PgInterval {
     /// The number of whole microseconds
     pub microseconds: i64,

diesel/src/pg/types/floats/mod.rs

@@ -12,7 +12,7 @@ use crate::sql_types;
 mod quickcheck_impls;
 
 #[derive(Debug, Clone, PartialEq, Eq, AsExpression, FromSqlRow)]
-#[sql_type = "sql_types::Numeric"]
+#[diesel(sql_type = sql_types::Numeric)]
 /// Represents a NUMERIC value, closely mirroring the PG wire protocol
 /// representation
 pub enum PgNumeric {

diesel/src/pg/types/mac_addr.rs

@@ -14,7 +14,7 @@ mod foreign_derives {
 
     #[derive(AsExpression, FromSqlRow)]
     #[diesel(foreign_derive)]
-    #[sql_type = "MacAddr"]
+    #[diesel(sql_type = MacAddr)]
     struct ByteArrayProxy([u8; 6]);
 }
 

diesel/src/pg/types/mod.rs

@@ -41,7 +41,7 @@ pub mod sql_types {
     /// [`FromSql`]: crate::deserialize::FromSql
     /// [`u32`]: https://doc.rust-lang.org/nightly/std/primitive.u32.html
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "26", array_oid = "1018")]
+    #[diesel(postgres_type(oid = 26, array_oid = 1018))]
     pub struct Oid;
 
     /// The "timestamp with time zone" SQL type, which PostgreSQL abbreviates
@@ -76,7 +76,7 @@ pub mod sql_types {
         doc = " [`chrono::DateTime`]: https://docs.rs/chrono/0.4.19/chrono/struct.DateTime.html"
     )]
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "1184", array_oid = "1185")]
+    #[diesel(postgres_type(oid = 1184, array_oid = 1185))]
     pub struct Timestamptz;
 
     /// The `Array` SQL type.
@@ -170,7 +170,7 @@ pub mod sql_types {
     ///
     /// [`WriteTuple`]: super::super::super::serialize::WriteTuple
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "2249", array_oid = "2287")]
+    #[diesel(postgres_type(oid = 2249, array_oid = 2287))]
     pub struct Record<ST: 'static>(ST);
 
     /// Alias for `SmallInt`
@@ -196,7 +196,7 @@ pub mod sql_types {
     /// [`FromSql`]: crate::deserialize::FromSql
     /// [Uuid]: https://docs.rs/uuid/*/uuid/struct.Uuid.html
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "2950", array_oid = "2951")]
+    #[diesel(postgres_type(oid = 2950, array_oid = 2951))]
     pub struct Uuid;
 
     /// Alias for `Binary`, to ensure `infer_schema!` works
@@ -287,7 +287,7 @@ pub mod sql_types {
     /// # fn main() {}
     /// ```
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "3802", array_oid = "3807")]
+    #[diesel(postgres_type(oid = 3802, array_oid = 3807))]
     pub struct Jsonb;
 
     /// The PostgreSQL [Money](https://www.postgresql.org/docs/9.1/static/datatype-money.html) type.
@@ -335,7 +335,7 @@ pub mod sql_types {
     /// # }
     /// ```
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "790", array_oid = "791")]
+    #[diesel(postgres_type(oid = 790, array_oid = 791))]
     pub struct Money;
 
     /// The [`MACADDR`](https://www.postgresql.org/docs/9.6/static/datatype-net-types.html) SQL type.
@@ -379,7 +379,7 @@ pub mod sql_types {
     /// # }
     /// ```
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "829", array_oid = "1040")]
+    #[diesel(postgres_type(oid = 829, array_oid = 1040))]
     pub struct MacAddr;
 
     #[doc(hidden)]
@@ -440,7 +440,7 @@ pub mod sql_types {
     /// # fn main() {}
     /// ```
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "869", array_oid = "1041")]
+    #[diesel(postgres_type(oid = 869, array_oid = 1041))]
     pub struct Inet;
 
     /// The [`CIDR`](https://www.postgresql.org/docs/9.6/static/datatype-net-types.html) SQL type. This type can only be used with `feature = "network-address"`
@@ -496,7 +496,7 @@ pub mod sql_types {
     /// # fn main() {}
     /// ```
     #[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
-    #[postgres(oid = "650", array_oid = "651")]
+    #[diesel(postgres_type(oid = 650, array_oid = 651))]
     pub struct Cidr;
 }
 

diesel/src/pg/types/money.rs

@@ -21,7 +21,7 @@ use crate::sql_types::{BigInt, Money};
 /// use diesel::data_types::PgMoney as Fils;  // 1/1000th unit of Dinar
 /// ```
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, AsExpression, FromSqlRow)]
-#[sql_type = "Money"]
+#[diesel(sql_type = Money)]
 pub struct PgMoney(pub i64);
 
 impl FromSql<Money, Pg> for PgMoney {