Struct FieldMeta 

pub struct FieldMeta {

    pub name: &'static str,
    pub column: &'static str,
    pub sql_type: SqlType,
    pub nullable: bool,
    pub primary_key: bool,
    pub auto: bool,
    pub unique: bool,
    pub index: bool,
    pub max_length: Option<u32>,
    pub max_digits: Option<u32>,
    pub decimal_places: Option<u32>,
    pub default: Option<DbDefault>,
    pub auto_now: bool,
    pub relation: Option<RelationMeta>,
}

Static metadata of one concrete column.

Fields

name: &'static str

Rust field name.

column: &'static str

Column name (author_id for a ForeignKey field named author).

sql_type: SqlType

Column type family.

nullable: bool

Accepts NULL.

primary_key: bool

Part of the primary key.

auto: bool

Value generated by the database (autoincrement / identity).

unique: bool

UNIQUE.

index: bool

Single-column index.

max_length: Option<u32>

VARCHAR(n).

max_digits: Option<u32>

Decimal precision.

decimal_places: Option<u32>

Decimal scale.

default: Option<DbDefault>

Database default.

auto_now: bool

Refresh to “now” on every save (auto_now).

relation: Option<RelationMeta>

Foreign-key relation.

Implementations

impl FieldMeta

pub const fn new( name: &'static str, column: &'static str, sql_type: SqlType, ) -> Self

A plain non-null column of sql_type; the derive overrides the rest.

Trait Implementations

impl Clone for FieldMeta

fn clone(&self) -> FieldMeta

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for FieldMeta

impl Debug for FieldMeta

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.