Members now can be non-users

db.go

@@ -19,7 +19,7 @@ func bootstrapDatabase() *gorm.DB {
 				return nil
 			}
 
-			db.AutoMigrate(&User{}, &Plan{}, &Poll{}, &Vote{})
+			db.AutoMigrate(&User{}, &Member{}, &Plan{}, &Poll{}, &Vote{})
 
 			//var tables = [...]struct {
 			//	key   string

models/models.go

@@ -1,22 +1,32 @@
 package models
 
 type User struct {
-	Username    string `gorm:"primaryKey" json:"username"`
-	Password    string `json:"password"`
-	OwnedPlans  []Plan `gorm:"foreignKey:Owner;references:Username" json:"-"`
-	MemberPlans []Plan `gorm:"many2many:user_plans;" json:"-"`
-	Votes       []Vote `gorm:"foreignKey:UsernameID" json:"-"`
+	Username   string   `gorm:"primaryKey" json:"username"`
+	Password   string   `json:"password"`
+	OwnedPlans []Plan   `gorm:"foreignKey:Owner;references:Username" json:"-"`
+	MemberOf   []Member `json:"-"`
+	Votes      []Vote   `gorm:"foreignKey:UsernameID" json:"-"`
+}
+
+type Member struct {
+	ID     uint `gorm:"primaryKey;autoIncrement:true"`
+	PlanID uint
+	Plan   Plan
+	Type   string `gorm:"check:type in ('member','non-member')"`
+	Name   string `gorm:"check:type=='member' OR name IS NOT NULL" json:"name"`
+	UserID string
+	User   User `gorm:"foreignKey:UserID"`
 }
 
 // CREATE TABLE plans(id INTEGER PRIMARY KEY AUTOINCREMENT, name STRING, owner STRING, FOREIGN KEY(owner) REFERENCES users(username))
 // CREATE TABLE plan_user_relations(username STRING, plan INTEGER, PRIMARY KEY(username, plan), FOREIGN KEY username REFERENCES user(username), FOREIGN KEY plan REFERENCES plans(id))
 type Plan struct {
-	ID          uint   `gorm:"primaryKey;autoIncrement:true" json:"id"`
-	Name        string `json:"name"`
-	Owner       string `json:"owner"`
-	Description string `json:"description"`
-	Members     []User `gorm:"many2many:user_plans;" json:"-"`
-	Polls       []Poll `gorm:"foreignKey:PlanID;references:ID" json:"-"`
+	ID          uint     `gorm:"primaryKey;autoIncrement:true" json:"id"`
+	Name        string   `json:"name"`
+	Owner       string   `json:"owner"`
+	Description string   `json:"description"`
+	Members     []Member `json:"-"`
+	Polls       []Poll   `gorm:"foreignKey:PlanID;references:ID" json:"-"`
 }
 
 // CREATE TABLE polls(id INTEGER PRIMARY KEY AUTOINCREMENT, plan INTEGER, name STRING, options JSON, FOREIGN KEY plan REFERENCES plans(id))

models/plans.go

@@ -31,22 +31,20 @@ func GetPlan(orm *gorm.DB, user User, id uint) (*Plan, error) {
 	return &plan, nil
 }
 
-func (p *Plan) GetAllUsers(orm *gorm.DB) ([]User, error) {
-	var users []User
-	err := orm.Model(p).Association("Members").Find(&users)
-	return users, err
+func (p *Plan) GetAllUsers(orm *gorm.DB) ([]Member, error) {
+	var members []Member
+	err := orm.Model(p).Association("Members").Find(&members)
+	return members, err
 }
 
 func (p *Plan) IsMember(orm *gorm.DB, u *User) (bool, error) {
-	var user User
+	var member_count int64
 	result := orm.
-		Table("users u").
-		Select("u.*").
-		Joins("JOIN user_plans up on u.username=up.user_username AND up.plan_id = ?", p.ID).
-		Where("u.username = ?", u.Username).
-		Take(&user).Error
-	if errors.Is(result, gorm.ErrRecordNotFound) {
+		Table("members").
+		Where("user_id=? AND plan_id=?", u.Username, p.ID).
+		Count(&member_count).Error
+	if result != nil {
 		return false, ErrNotMember
 	}
-	return result == nil, result
+	return member_count == 1, nil
 }

models/users.go

@@ -6,6 +6,10 @@ import (
 
 func (u *User) GetPlans(orm *gorm.DB) ([]Plan, error) {
 	var plans []Plan
-	err := orm.Model(u).Association("MemberPlans").Find(&plans)
-	return plans, err
+	err := orm.Debug().Table("plans p").
+		Select("p.*").
+		Joins("JOIN members m ON m.plan_id=p.id").
+		Where("m.user_id=?", u.Username).
+		Find(&plans)
+	return plans, err.Error
 }

planner.go

@@ -105,8 +105,8 @@ func main() {
 		var plan Plan = Plan{
 			Name:  plan_req.Name,
 			Owner: u.Username,
-			Members: []User{
-				{Username: u.Username},
+			Members: []Member{
+				{UserID: u.Username},
 			},
 		}
 		result := orm.Create(&plan)