migrate from github

internal/model/membership.go

@@ -0,0 +1,24 @@
+package model
+
+type MembershipType int64
+
+const (
+	MembershipType_UserGroup MembershipType = 1 // equals to SubjectTypeUserGroup
+	MembershipType_OrgNode   MembershipType = 2 // equals to SubjectTypeOrgNode
+)
+
+type MembershipRelation struct {
+	ID           int64          `gorm:"primaryKey;autoIncrement"`
+	Type         MembershipType `gorm:"not null;index" json:"type"` // 1: UserGroup, 2: OrgNode
+	UserID       int64          `gorm:"not null;index" json:"user_id"`
+	MembershipID int64          `gorm:"not null;index" json:"membership_id"` // user_group_id or org_node_id
+
+	// virtual field
+	User User `gorm:"foreignKey:UserID;references:ID"`
+}
+
+// query all user belong to membership with type and member_id
+
+func (MembershipRelation) TableName() string {
+	return "membership"
+}