Trait Model 

pub trait Model:
    Sized
    + Send
    + Sync
    + Unpin
    + 'static
    + for<'r> FromRow<'r, PgRow> {
    type PrimaryKey: Type<Postgres> + for<'q> Encode<'q, Postgres> + Send + Sync + Clone + 'static;

    const TABLE: &'static str;
    const COLUMNS: &'static [&'static str];
    const PK_COLUMN: &'static str = "id";

    // Required method
    fn primary_key(&self) -> &Self::PrimaryKey;

    // Provided methods
    fn query() -> QueryBuilder<Self> { ... }
    fn find(
        pool: &Pool<Postgres>,
        id: Self::PrimaryKey,
    ) -> Pin<Box<dyn Future<Output = Result<Option<Self>, Error>> + Send + '_>> { ... }
    fn all(
        pool: &Pool<Postgres>,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<Self>, Error>> + Send + '_>> { ... }
}

Required Associated Constants

const TABLE: &'static str

Table name (e.g. "users").

const COLUMNS: &'static [&'static str]

All column names in this model’s table.

Provided Associated Constants

const PK_COLUMN: &'static str = "id"

Primary key column name (e.g. "id").

Required Associated Types

type PrimaryKey: Type<Postgres> + for<'q> Encode<'q, Postgres> + Send + Sync + Clone + 'static

Required Methods

fn primary_key(&self) -> &Self::PrimaryKey

Return this row’s primary key.

Provided Methods

fn query() -> QueryBuilder<Self>

Start a new query builder for this model.

fn find( pool: &Pool<Postgres>, id: Self::PrimaryKey, ) -> Pin<Box<dyn Future<Output = Result<Option<Self>, Error>> + Send + '_>>

Fetch by primary key.

fn all( pool: &Pool<Postgres>, ) -> Pin<Box<dyn Future<Output = Result<Vec<Self>, Error>> + Send + '_>>

Fetch all rows.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors