返回游标数组不会显示任何结果 [英] returning array of cursors does not show any result
问题描述
我试图通过这样做来解决两个集合的加入:
im trying to solve a "join" of two collections by doing like this:
foundUsers: function()
{
var searchUser = Session.get("searchUser"); // user search criteria
var usf = User.find(searchUser, {}); // get user results
var typeId = usf.map(function(p) { return p.us_ut_id }); // get type ids
var tyf = Type.find({_id: {$in: typeId}}, {}); // new Meteor.Collection.ObjectID("533d63bef0e236f9d76db905")
var typeName = tyf.map(function(p) { return p.ut_name.toString() }); // check type names
console.log(typeName);
return [usf, tyf];
}
我的html字段中的结果只是空白字段而没有错误消息所以是什么我做得对吗?
The result in my html fields are just blank fields and no error message so what am I not doing right?
这一点是使用typeId中的_id数字来获取以html格式显示的用户的正确类型。
The point of this is to use the _id numbers in typeId to get the correct type of a user displayed in a html form.
返回usf; //这将返回所有没有类型的用户
return usf; // this returns all users without types
返回tyf; //这将返回没有用户的所有类型
return tyf; // this returns all types without users
更新1:
模板如下所示:
<template name="getResult">
{{#each foundUsers}}
<input type="text" id="firstname" value="{{us_firstname}}"/><br>
<input type="text" id="lastname" value="{{us_lastname}}"/><br>
<input type="text" id="typename" value="{{us_ut_name}}"/><br>
{{/each}}
</template>
us_xxx应该找到名称等用户数据。
us_ut_name应该显示我们从us_ut_type获得的ObjectID所获得的类型的名称。
us_xxx should find the user data such as names. us_ut_name should display the name of the type which we get by the ObjectID we got from us_ut_type.
更新2:
所以我制作了这样的代码,我相信它应该可以工作,因为它在控制台中输出了正确的数据:
So I made my code like this which I believe should work since it prints the right data in the console:
// display user data
Template.getResult.helpers(
{
foundUsers: function()
{
var selector = Session.get('searchUser');
var users = User.find(selector).fetch();
return _.each(users, function(user)
{
console.log(user);
var result = user.us_ut_name = Type.findOne({_id: new Meteor.Collection.ObjectID(user.us_ut_id._str)}).ut_name;
console.log(user.us_firstname + ", " + result);
return result;
});
}
});
但结果未显示在页面上。
But the result is not shown on the page.
打印例如:
john,barber
john, barber
mike ,木匠
降压,狗
在控制台中,但不在网站上的输入字段。
in the console, but not in the input fields on the website.
解决方案:
Template.getResult.helpers(
{
foundUsers: function()
{
var selector = Session.get('searchUser');
var users = User.find(selector).fetch();
_.each(users, function(user)
{
console.log(user);
var result = user.us_ut_name = Type.findOne({_id: new Meteor.Collection.ObjectID(user.us_ut_id._str)}).ut_name;
console.log(user.us_firstname + ", " + result);
return result;
});
return users;
}
});
谢谢David Weldon
Thank you David Weldon
推荐答案
如果我理解你的模型,这可能有效:
If I understand your models correctly, this may work:
foundUsers: function() {
var selector = Session.get('searchUser');
var users = User.find(selector).fetch();
_.each(users, function(user) {
return user.tyf_type = Type.findOne(user.us_ut_id).ut_name.toString();
});
return users;
}
它使用给定的选择器获取用户,然后通过添加修改每个用户一个 tyf_type
属性。唯一的缺点是它使用 fetch
,每次用户更改时都会重绘整个列表。
It fetches the users with the given selector and then modifies each of them by adding a tyf_type
property. The only downside of this is that it uses fetch
which will redraw the whole list every time any user changes.
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