我不太了解时间戳的使用情况,
例如
用户创建文章,他们可以选择PublishDate
,系统也会自动存储CreateDate
。
一个。我应该为时区设置PublishDate
和CreateDate
时间戳并设置utc吗?
湾用户发布字符串然后我转换如下使用momentjs
使用utc时间戳和存储,当有人选择此行时,将其显示为用户客户端时间反向使用momentjs
℃。我对CURRENT_TIMESTAMP
使用CreateDate
,CURRENT_TIMESTAMP
是否意味着服务器时间?我做得对吗?
我的想法是我总是将utc时区时间戳插入数据库,无论用户/客户端读取的位置,将数据转换为用户/客户端时区?我做得对吗?
一个。我的数据库(postgres)由
创建CREATE TABLE IF NOT EXISTS "Article"(
"ArticleId" SERIAL NOT NULL,
"PublishDate" timestamp with time zone,
"Active" bit NOT NULL,
"CreateByUserId" integer,
"CreateDate" timestamp with time zone,
PRIMARY KEY ("ArticleId")
);
SET timezone = 'UTC';
湾用户提交发布到商店(nodejs)
// publishDate: '{"y":2015,"m":8,"d":16,"h":15,"mi":46,"s":24}
var publishDate = JSON.parse(req.body.publishDate);
var leadingZeroAndDateFormat = function(publishDate) {
return new Promise(function (fulfill, reject){
if (publishDate.m < 10) { publishDate.m = '0'+publishDate.m; }
if (publishDate.d < 10) { publishDate.d = '0'+publishDate.d; }
if (publishDate.h < 10) { publishDate.h = '0'+publishDate.h; }
if (publishDate.mi < 10) { publishDate.mi = '0'+publishDate.mi; }
if (publishDate.s < 10) { publishDate.s = '0'+publishDate.s; }
var str = publishDate.y+'-'+publishDate.m+'-'+publishDate.d+' '+publishDate.h+':'+publishDate.mi+':'+publishDate.s;
var utc = moment(str).unix();
fulfill(utc);
});
};
℃。将CreateDate
使用CURRENT_TIMESTAMP
var insertArticle = function(publishDate, active, createByUserId) {
return new Promise(function (fulfill, reject){
var query = 'INSERT INTO "Article" ("PublishDate","Active","CreateByUserId","CreateDate") VALUES ($1,$2,$3,CURRENT_TIMESTAMP) RETURNING "ArticleId"';
dbClient.query(query,[publishDate,active,createByUserId], function(error, result) {
if (error) {
reject(error);
} else {
fulfill(result);
}
});
});
};
更新
当我在没有时区的情况下更改所有列时,我执行insertArticle
显示错误
{ [error: date/time field value out of range: "1439717298"]
name: 'error',
length: 158,
severity: 'ERROR',
code: '22008',
detail: undefined,
hint: 'Perhaps you need a different "datestyle" setting.',
position: undefined,
internalPosition: undefined,
internalQuery: undefined,
where: undefined,
schema: undefined,
table: undefined,
column: undefined,
dataType: undefined,
constraint: undefined,
file: 'datetime.c',
line: '3775',
routine: 'DateTimeParseError' }
var insertArticle = function(publishDate, active, createByUserId) {
return new Promise(function (fulfill, reject){
var query = 'INSERT INTO "Article" ("PublishDate","Active","CreateByUserId","CreateDate") VALUES ($1,$2,$3,$4) RETURNING "ArticleId"';
dbClient.query(query,[publishDate,active,createByUserId,moment.utc().unix()], function(error, result) {
if (error) {
reject(error);
} else {
fulfill(result);
}
});
});
};
答案 0 :(得分:3)
没有时区的传入时间戳以本地时间而不是UTC进行解析 - 我将此称为node-postgres中的错误。无论如何,你可以通过添加以下代码来覆盖它来做正确的事情:
pg.types.setTypeParser(1114, function(stringValue) {
console.log(stringValue);
return new Date(Date.parse(stringValue + "+0000"));
})