Struct Relation 

pub struct Relation {
    pub name: String,
    pub from_type: String,
    pub from_field: String,
    pub to_type: String,
    pub to_field: String,
    pub kind: RelationKind,
}

关联关系定义

描述两个 GraphQL 类型之间的关联关系

Fields

name: String

关联名称

from_type: String

源类型名

from_field: String

源类型关联字段（外键）

to_type: String

目标类型名

to_field: String

目标类型关联字段（主键）

kind: RelationKind

关联类型

Implementations

impl Relation

pub fn new( name: impl Into<String>, from_type: impl Into<String>, from_field: impl Into<String>, to_type: impl Into<String>, to_field: impl Into<String>, kind: RelationKind, ) -> Self

pub fn one_to_many( name: impl Into<String>, from_type: impl Into<String>, to_type: impl Into<String>, ) -> Self

创建一对多关联

pub fn many_to_one( name: impl Into<String>, from_type: impl Into<String>, to_type: impl Into<String>, ) -> Self

创建多对一关联

Trait Implementations

impl Clone for Relation

fn clone(&self) -> Relation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Relation

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Relation

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Relation

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.