relationship

package

v0.15.0 Latest Latest Go to latest Published: Mar 30, 2026 License: MIT Imports: 5 Imported by: 0

Details

Package relationship 用于处理多对多的数据表关系

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type Relationships[T1, T2 T] struct {
	// contains filtered or unexported fields
}

Relationships 提供了多对多的数据表关系

func Install[T1, T2 T](mod *cmfx.Module, tableName string) *Relationships[T1, T2]

func NewRelationships[T1, T2 T](mod *cmfx.Module, tableName string) *Relationships[T1, T2]

func (m *Relationships[T1, T2]) Add(tx *orm.Tx, v1 T1, v2 T2) error

func (m *Relationships[T1, T2]) CountByV1(v1 T1) (int64, error)

func (m *Relationships[T1, T2]) CountByV2(v2 T2) (int64, error)

func (m *Relationships[T1, T2]) Delete(tx *orm.Tx, v1 T1, v2 T2) error

func (m *Relationships[T1, T2]) DeleteByV1(tx *orm.Tx, v1 T1) error

func (m *Relationships[T1, T2]) DeleteByV2(tx *orm.Tx, v2 T2) error

func (m *Relationships[T1, T2]) LeftJoin(sql *sqlbuilder.SelectStmt, alias, on string)

LeftJoin LEFT JOIN 至 sql

alias 为当前的 relationshipPO 表指定别名，该别名可能在 on 参数中可能会用到；

func (m *Relationships[T1, T2]) ListV1(v2 T2) ([]T1, error)

ListV1 列出所有与 v2 关联的 v1 列表

func (m *Relationships[T1, T2]) ListV2(v1 T1) ([]T2, error)

ListV2 列出所有与 v1 关联的 v2 列表

type T interface {
	~string | ~int | ~int64
}

T 限制了可用的字段类型

Path	Synopsis
eav Package eav Entity-Attribute-Values 数据表管理	Package eav Entity-Attribute-Values 数据表管理