Derive Macro Updatable 

#[derive(Updatable)]
{
    // Attributes available to this derive:
    #[table_name]
    #[primary_key]
    #[skip_update]
    #[timestamps]
}

Derive macro that generates an update() method for a struct.

All Option<T> fields are treated as partial updates — only Some values are included in the SET clause. Non-Option fields are always included.

Attributes

• #[table_name("table")] — required
• #[primary_key] — marks the WHERE clause field (required, exactly one)
• #[skip_update] — exclude from SET clause

Example

#[derive(Updatable)]
#[table_name("user")]
pub struct UpdateUser {
    #[primary_key]
    pub id: i64,
    pub username: Option<String>,
    pub email: Option<String>,
    pub active: Option<bool>,
}

// Generated:
// UpdateUser { id: 42, username: Some("new"), email: None, active: None }.update(pool).await?;
// → UPDATE user SET username=? WHERE id=?  (only Some fields)