使用orm进行数据表封装，并编写和调试接口相关函数错误问题和相关内容的修改

src/test/test.lua

@@ -15,10 +15,23 @@
 
 local User = require("model.user")
 
-local user = User.find("1")
+--获取数据表中的记录数
-ngx.say(user)
+local code, res = User:count()
-local userPages = User:paginate(1)
+--ngx.say(res)
-ngx.say(userPages)
+
+--查询表中id为1的数据记录
+code, res = User:find("1")
+
+--查询表中的所有记录
+code, res = User:all()
+for _, row in ipairs(res) do
+    for key, value in pairs(row) do
+        ngx.say(key .. ":" .. tostring(value))
+    end
+end
+
+--local code, userPages = User:paginate(1)
+--ngx.say(userPages)
 
 --获取请求参数的键值和数据值
 --local cjson = require("cjson")

src/util/database.lua

@@ -12,15 +12,14 @@ local mt = { __index = _M }
     @return bool, db_context, err
 --]]
 function _M:get_connection()
+    local code = 0
     if ngx.ctx[self.db_type] then
         -- if write before read, make sure write read connection the same
         if ngx.ctx[WRITE] then
-            return ngx.ctx[WRITE], nil
+            return code, ngx.ctx[WRITE]
         end
-        return ngx.ctx[self.db_type], nil
+        return code, ngx.ctx[self.db_type]
     end
-
-    local code = 0
     -- 创建一个新的连接
     local conn = pgmoon.new({
         host = self.host, -- postgres host
@@ -29,13 +28,14 @@ function _M:get_connection()
         password = self.password,      -- postgres password
         database = self.database
     });
-    conn.set_timeout(self.timeout or 1000)
+    --conn.set_timeout(self.timeout or 1000)
     ---- 连接到数据库
     local ok, err = conn:connect()
     if not ok then
         print("Connection failed: " .. err)
         code = 0x000002
     end
+    ngx.log(ngx.INFO, 'Connection success')
     --ngx.say("Connection success")
     ngx.ctx[self.db_type] = conn
     return code,conn
@@ -63,18 +63,18 @@ end
     @return bool, data, err
 --]]
 function _M.db_query(self, sql)
-    local db, err = self:get_connection()
+    local code, conn = self:get_connection()
-    if err ~= nil then
+    if code ~= 0 then
-        return nil, err
+        return code,nil
     end
-    local res, errcode, sqlstate
+    ngx.log(ngx.INFO, 'begin db query :' .. sql)
-    res, err, errcode, sqlstate = db:query(sql)
+    -- 执行查询
+    local res, err = conn:query(sql)
     if not res then
-        ngx.log(ngx.ERR, err, errcode, sqlstate)
+        ngx.log(ngx.ERR, 'Query failed:' .. sql)
-        return nil, err
+        return 2,nil
     end
-
+    return 0, res
-    return res, nil
 end
 
 function _M.new(self, opts)
@@ -85,7 +85,7 @@ function _M.new(self, opts)
         password = opts.password or '',
         database = opts.database or 'postgres',
         --charset = opts.charset or 'utf8mb4',
-        --timeout = opts.timeout,
+        --timeout = opts.timeout or 1000,
         --max_packet_size = 1024 * 1024,
         db_pool_timeout = opts.pool_timeout or 1000,
         db_pool_size = opts.pool_size or 1000,

src/util/helpers.lua

@@ -94,7 +94,7 @@ end
 
 local function set_cookie(key, value, expires)
     local config = require("config.app")
-    local cookie, err = require("lib.cookie"):new()
+    local cookie, err = require("util.cookie"):new()
     if not cookie then
         ngx.log(ngx.ERR, err)
         return false, err
@@ -118,7 +118,7 @@ local function set_cookie(key, value, expires)
 end
 
 local function get_cookie(key)
-    local cookie, err = require("lib.cookie"):new()
+    local cookie, err = require("util.cookie"):new()
     if not cookie then
         ngx.log(ngx.ERR, err)
         return false
@@ -127,7 +127,7 @@ local function get_cookie(key)
 end
 
 local function get_local_time()
-    local config = require("config.app")
+    local config = require("config.config")
     local time_zone = ngx.re.match(config.time_zone, "[0-9]+")
     if time_zone == nil then
         local err = "not set time zone or format error, time zone should look like `+8:00` current is: " .. config.time_zone

src/util/model.lua

@@ -8,8 +8,6 @@ local table_remove = helpers.table_remove
 
 local _M = {}
 
-local mt = { __index = _M }
-
 local WRITE = 'WRITE'
 local READ = 'READ'
 
@@ -125,27 +123,29 @@ end
 function _M:find(id,column)
 	if self.query_sql ~= nil then
 		ngx.log(ngx.ERR, 'cannot use find() with other query sql')
-		return nil
+		return 1, nil
 	end
 	column = column or 'id'
 	id = transform_value(id)
+    ngx.log(ngx.INFO, 'table name :' .. self.table)
 	local sql = 'select * from '..self.table..' where '..column..'='..id..' limit 1'
-	local res = self:query(sql, READ)
+    ngx.log(ngx.INFO, 'query sql:', sql)
+	local code, res = self:query(sql, READ)
 	if table.getn(res) > 0 then
+        ngx.log(ngx.INFO, 'query record count:', table.getn(res))
 		res = self:make_relations(res)
-		return res[1]
+		return code, res
-	else
-		return false
 	end
+    return code, nil
 end
 
 function _M:all()
 	if self.query_sql ~= nil then
 		ngx.log(ngx.ERR, 'cannot use all() with other query sql ', self.query_sql)
-		return nil
+		return 2, nil
 	end
-	local res = self:query('select * from '..self.table, READ)
+	local code, res = self:query('select * from \"'..self.table..'\"', READ)
-	return self:make_relations(res)
+	return code, self:make_relations(res)
 end
 
 --组装sql语句条件为and相关的字段
@@ -187,18 +187,17 @@ end
 
 --获取数据表中记录的数量
 function _M:count()
-	local sql = self.query_sql
+	local sql = ""
-	if not sql then
+	if self.query_sql ~= nil then
-		sql = 'select count(*) from '..self.table
+		sql = 'select count(*) from \"'..self.table..'\" '..self.query_sql
     else
-		sql = 'select count(*) from '..self.table..' '..self.query_sql
+        sql = 'select count(*) from \"'..self.table.."\""
 	end
-	local res = self:query(sql, READ)
+	local code, res = self:query(sql, READ)
     if table.getn(res) > 0 then
-		return tonumber(res[1]['count(*)'])
+        return code, tonumber(res[1]['count'])
-	else
-		return 0
     end
+    return code, nil
 end
 
 -- params: (option)int num
@@ -222,10 +221,10 @@ function _M:get(num)
 end
 
 --根据数据模型中的
-function _M:paginate(page_num, per_page)
+function _M:paginate(page_num, page_size)
 	page_num = page_num or 1
-	per_page = per_page or config.per_page
+    page_size = page_size or 10
-	local sql, count_sql, total
+	local sql, count_sql, total, code
 	local data={
 		data = {},
 		next_page = 1,
@@ -233,25 +232,24 @@ function _M:paginate(page_num, per_page)
 		total = 0
 	}
 	if not self.query_sql then
-		sql = 'select * from '..self.table..' limit '..per_page*page_num..','..per_page
+		sql = 'select * from \"'..self.table..'\" limit '..page_num..' offset '..page_size
-		count_sql = 'select count(*) from '..self.table
+		count_sql = 'select count(*) from \"'..self.table..'\"'
 	else
-		sql = 'select * from '..self.table .. ' '..self.query_sql .. ' limit '..per_page*(page_num-1)..','..per_page
+		sql = 'select * from \"'..self.table .. '\" '..self.query_sql .. ' limit '..page_num..' offset '..page_size
-		count_sql = 'select count(*) from '..self.table..' '..self.query_sql
+		count_sql = 'select count(*) from \"'..self.table..'\" '..self.query_sql
 	end
-	total = self:query(count_sql, READ)
+	code, total = self:query(count_sql, READ)
-	if not total then
+	if code == 0 then
-	else
+		data['total'] = tonumber(total[1]['count'])
-		data['total'] = tonumber(total[1]['count(*)'])
 		data['data'] = self:make_relations(self:query(sql, READ))
 	end
+    --暂时没有理清下面的业务逻辑
 	if (table.getn(data['data']) + ((page_num - 1)* per_page)) < data['total'] then
 		data['next_page'] = page_num + 1
 	end
 	if tonumber(page_num) ~= 1 then
 		data['prev_page'] = page_num - 1
 	end
-
 	return data
 end
 
@@ -365,30 +363,29 @@ end
 --查询数据表中的数据记录
 function _M:query(sql, type)
 	if not sql then
-		return ngx.log(ngx.ERR,'query() function need sql to query')
+		ngx.log(ngx.ERR,'query() function need sql to query')
+        return 2, nil
 	end
 	self.query_sql = nil
 	self.has_order_by = false
 	if type == READ then
-		local result, err = database_read:db_query(sql)
+		local code, result = database_read:db_query(sql)
-		if err ~= nil then
+		if code ~= 0 then
-			ngx.log(ngx.ERR, "read db error. res: " .. (err or "no reason"))
+			ngx.log(ngx.ERR, "read db error. res: " .. tostring(code).." or no reason")
-			ngx.exit(500)
+			return code, nil
-			return
 		end
-		return result
+		return code, result
 	elseif type == WRITE then
-		local result, err = database_write:db_query(sql)
+		local code, result = database_write:db_query(sql)
-		if err ~= nil then
+		if code ~= 0 then
-			ngx.log(ngx.ERR, "write db error. res: " .. (err or "no reason"))
+			ngx.log(ngx.ERR, "write db error. res: " .. (code or "no reason"))
-			ngx.exit(500)
+			return code, nil
-			return
 		end
-		return result.affected_rows
+		return code, result.affected_rows
 	else
 		ngx.log(ngx.ERR, 'type invalid, need ' .. READ .. ' or '..WRITE)
 		ngx.exit(500)
-		return
+        return 2, nil
 	end
 end
 
@@ -397,9 +394,13 @@ function _M:get_hidden()
 	return self.hidden
 end
 
+function _M:debug()
+    ngx.log(ngx.INFO, self.table.." ")
+end
+
 --初始化数据表中的字段
 function _M:new(table, attributes, hidden)
-	return setmetatable({
+    local obj = {
         table = table,
         attributes = attributes or {},
         hidden = hidden or {},
@@ -410,7 +411,9 @@ function _M:new(table, attributes, hidden)
         },
         relation_sql = nil,
         --soft_delete_column = 'deleted_at'
-        }, mt)
+    }
+    setmetatable(obj, {__index = _M})
+	return obj
 end
 
 return _M