#proc-macro #surrealdb #template #generate #extra #cargo #db

macro surrealdb-extras-proc-macro

A cargo generate template for quick-starting a procedural macro crate

8 releases (4 stable)

2.0.6 Oct 18, 2024
0.2.0 Oct 18, 2024
0.1.3 Feb 26, 2024
0.1.2 Jan 30, 2024
0.1.1 Jan 30, 2024

#1530 in Procedural macros

32 downloads per month
Used in surrealdb-extras

MIT license

12KB
167 lines

A simple library that establishes a connection and sets/creates the namespace&db and sets the types of the attributes

Example

pub async fn establish(path: PathBuf) -> surrealdb::Result<Surreal<Db>> {
    let conn = Surreal::new::<SpeeDb>((path.join("db"), Config::default().strict()));
    surrealdb_extras::use_ns_db(conn, "test", "test", vec![Test::register]).await
}

#[derive(surrealdb_extras::SurrealTableEntry, Deserialize, Serialize, Clone, Default)]
#[db("test_table")]
#[sql(["DEFINE EVENT test_table_updated ON TABLE test_table WHEN $event = \"UPDATE\" AND $before.updated == $after.updated THEN (UPDATE $after.id SET updated = time::now() );"])]
struct Test {
    random_number: i32,
    /// renamed field
    #[opt(rename = "new_name")]
    #[serde(rename = "new_name")]
    data: String,
    /// overwrites the detected db type
    #[opt(db_type = "string")]
    data: CustomStructWithSerialize,
    /// will be excluded in get_or_insert check
    #[opt(exclude = true)]
    updated: Datetime
}

pub async fn demo() {
    let conn = establish(PathBuf::new()).await.unwrap();
    let test = Test::default();

    // creates new item with custom id and return self
    let _: Option<Test> = test
        .clone()
        .insert(&conn, Some(sql::Id::rand()))
        .await
        .unwrap();

    // creates new item with random id and return record
    let v: surrealdb_extras::Record = test.add(&conn).await.unwrap().unwrap();

    // delete record
    let v: Option<surrealdb_extras::Record> = v.delete(&conn).await.unwrap();
}

usefull functions in:

  • RecordIdFunc
  • SurrealTableInfo

the functions in RecordIdType, RecordData, Record are from RecordIdFunc

Categorized

init:
  • use_ns_db
  • impl SurrealTableInfo(use #[derive(SurrealTable, Serialize, Deserialize)])
Deserialize:
  • impl SurrealSelectInfo(use #[derive(SurrealSelect, Deserialize)] or #[derive(SurrealTable, Serialize, Deserialize)])
  • Record
  • RecordData
  • RecordIdFunc(within structs)
  • RecordIdType(within structs)
Serialize:
  • impl SurrealTableInfo(use #[derive(SurrealTable, Serialize, Deserialize)])

  • RecordIdFunc(within structs)

  • RecordIdType(within structs)

  • ThingArray

Dependencies

~3MB
~63K SLoC