Javascript Expressjs:搜索查询api
我想用查询字符串搜索我的用户存储库 这将返回所有具有类似用户名“kyogron”和类似电子邮件“的用户”kyogron@gmail" 这将返回所有用户:Javascript Expressjs:搜索查询api,javascript,express,mongoose,Javascript,Express,Mongoose,我想用查询字符串搜索我的用户存储库 这将返回所有具有类似用户名“kyogron”和类似电子邮件“的用户”kyogron@gmail" 这将返回所有用户: GET localhost:3000/users 我已经设法处理了路由参数,但我一直在优化它: app.get('/users', function(req, res) { // creates a mongoosejs query object var query = User.find({}); // to un
GET localhost:3000/users
我已经设法处理了路由参数,但我一直在优化它:
app.get('/users', function(req, res) {
// creates a mongoosejs query object
var query = User.find({});
// to understand how expressjs handles queries:
// ?username=kyogron&email=kyogron@gmail.com
// { username: "kyogron", email: "kyogron@gmail.com" }
//console.log(req.query);
// this was one idea of optimizing the search query parameters
// this doesn't work don't know why I always get an array of ALL users
// even the key and value is right
Object.keys(req.query).forEach(function(key) {
query.select(key, req.query[key]);
});
// this was the way I was first handling the parameters, this works !!
//if (req.query.username) query.where('username', req.query.username);
//if (req.query.email) query.where('email', req.query.email);
// the rest of the query
query.select('username', 'email');
query.exec(function(err, users) {
if (err) throw err;
res.json(users);
});
});
这些是我正在努力解决的问题:
if (req.query.username) {
query.$where(function() {
return this.username === req.query.username; // here we need a regex check
});
}
这不管用。。。谁能给我一个提示吗
EDIT2:
if (req.query.username) {
query.where('username').regex(new RegExp("\/"+req.query.username+"\/"));
}
没有用$where管理任何事情。。。然而我现在发现
query.where('username').regex();
我只需要寻找一个搜索正则表达式,它可以查找类似的单词
EDIT3:
if (req.query.username) {
query.where('username').regex(new RegExp("\/"+req.query.username+"\/"));
}
我发现了这样一条线索:我在mongoosejs小组中问我如何能用mongoose做到这一点
EDIT4:
if (req.query.username) {
query.where('username').regex(new RegExp("\/"+req.query.username+"\/"));
}
我差一点就拿到了。只需要修复这个愚蠢的正则表达式
app.get('/users', function(req, res) {
var query = User.find({});
Object.keys(req.query).forEach(function(key) {
query.where(key).regex(new RegExp(req.query[key]));
});
/*
if (req.query.username) {
query.where('username').regex(new RegExp(req.query.username));
}
if (req.query.email) {
query.where('email').regex(new RegExp(req.query.email));
}*/
query.select('username', 'email');
query.exec(function(err, users) {
if (err) throw err;
res.json(users);
});
});
第一个不起作用,因为我输入了一个错误(.select()不是.where())。第二个是在一个额外的线程中发现的
我仍然有点不确定所选择的方法
迭代req.query将允许代码可重用(可能作为前置路由参数函数),但它很容易出错