feat：完善项目信息

app/api/admin/model/activity_instance.go

@@ -0,0 +1,47 @@
+package model
+
+import (
+	"SciencesServer/app/common/model"
+	"SciencesServer/serve/orm"
+	"fmt"
+)
+
+type ActivityInstance struct {
+	*model.ActivityInstance
+}
+
+type ActivityInstanceInfo struct {
+	*model.ActivityInstance
+	JoinCount int `json:"join_count"`
+	model.Area
+}
+
+// Activity 活动信息
+func (m *ActivityInstance) Activity(page, pageSize int, count *int64, where ...*model.ModelWhere) ([]*ActivityInstanceInfo, error) {
+	db := orm.GetDB().Table(m.TableName()+" AS a").
+		Select("a.id", "a.tenant_id", "a.mode", "a.image", "a.title", "a.begin_at", "a.finish_at", "a.join_deadline",
+			"a.amount", "a.max_number", "a.status", "a.created_at", "j.count AS join_count", "t.province", "t.city").
+		Joins(fmt.Sprintf("LEFT JOIN (SELECT activity_id, COUNT(id) AS count FROM %s WHERE is_delete = %d AND status = %d GROUP BY activity_id) AS j ON a.id = j.activity_id",
+			model.NewActivityJoin().TableName(), model.DeleteStatusForNot, model.ActivityJoinStatusForSuccess)).
+		Joins(fmt.Sprintf("LEFT JOIN %s AS t ON i.tenant_id = t.id", model.NewSysTenant().TableName())).
+		Where("a.is_deleted = ?", model.DeleteStatusForNot)
+
+	if len(where) > 0 {
+		for _, wo := range where {
+			db = db.Where(wo.Condition, wo.Value)
+		}
+	}
+	out := make([]*ActivityInstanceInfo, 0)
+
+	if err := db.Count(count).Error; err != nil {
+		return nil, err
+	}
+	if err := db.Order("a.id " + model.OrderModeToDesc).Offset((page - 1) * pageSize).Limit(pageSize).Scan(&out).Error; err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func NewActivityInstance() *ActivityInstance {
+	return &ActivityInstance{model.NewActivityInstance()}
+}

app/api/admin/model/activity_join.go

@@ -0,0 +1,11 @@
+package model
+
+import "SciencesServer/app/common/model"
+
+type ActivityJoin struct {
+	*model.ActivityJoin
+}
+
+func NewActivityJoin() *ActivityJoin {
+	return &ActivityJoin{model.NewActivityJoin()}
+}