feat community query

dao/mysql/community.go

@@ -0,0 +1,18 @@
+package mysql
+
+import (
+	"Goi/models"
+	"database/sql"
+	"go.uber.org/zap"
+)
+
+func GetCommunityList() (communityList []*models.Community, err error) {
+	sqlStr := "select community_id, community_name from community"
+	if err := db.Select(&communityList, sqlStr); err != nil {
+		if err == sql.ErrNoRows {
+			zap.L().Warn("there is no community in db")
+			err = nil
+		}
+	}
+	return
+}

logic/community.go

@@ -0,0 +1,11 @@
+package logic
+
+import (
+	"Goi/dao/mysql"
+	"Goi/models"
+)
+
+func GetCommunityList() ([]*models.Community, error) {
+	// 查数据库 查找到所有的community 并返回
+	return mysql.GetCommunityList()
+}