Trait PrimaryKeyTrait

pub trait PrimaryKeyTrait: IdenStatic + IntoEnumIterator {
    type ValueType: Send + Debug + PartialEq + IntoValueTuple + FromValueTuple + TryGetableMany + TryFromU64 + PrimaryKeyArity;

    // Required method
    fn auto_increment() -> bool;
}

A Trait for to be used to define a Primary Key.

A primary key can be derived manually

Example

use sea_orm::entity::prelude::*;

#[derive(Copy, Clone, Debug, EnumIter)]
pub enum PrimaryKey {
    Id,
}
impl PrimaryKeyTrait for PrimaryKey {
    type ValueType = i32;

    fn auto_increment() -> bool {
        true
    }
}

Alternatively, use derive macros to automatically implement the trait for a Primary Key

Example

use sea_orm::entity::prelude::*;

#[derive(Copy, Clone, Debug, EnumIter, DerivePrimaryKey)]
pub enum PrimaryKey {
    Id,
}

See module level docs crate::entity for a full example

Required Associated Types

type ValueType: Send + Debug + PartialEq + IntoValueTuple + FromValueTuple + TryGetableMany + TryFromU64 + PrimaryKeyArity

Required Methods

fn auto_increment() -> bool

Method to call to perform AUTOINCREMENT operation on a Primary Key

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.

Implementations on Foreign Types

impl PrimaryKeyTrait for PrimaryKey

type ValueType = String

fn auto_increment() -> bool

Implementors