[Solved] Dynamically build JS object from collection and pass to AutoForm

help
1

Hello,

I’m trying to get a list of user emails into a variable so i can use with an autoForm. This is really easy to do with templates, but i want it in the JS so i can pass cleanly to an autoForm.

userOptions: function() {

let users = Meteor.users.find({}, { fields: { "emails.address": 1 } });
for (let i=0; i < users.count(); i++) {
	console.log(users[i]._id); //this does not work obviously
}

return { //I want to return the id and email like below, the email being the label and the id being the value. 
  2013: "2013",
  2014: "2014",
  2015: "2015"
};

Been trying to get this to work for a bit. Just need another pair of eyes to look at it. Please and thank you.

Edit: The plan is to use JSON.stringify once i had the data, but not got there yet.

Tat

2

Hi,

So this is what I am trying to do, which is also being silly.

userOptions: function() {
let users = Meteor.users.find({}, { fields: { “emails.address”: 1 } });

let output1 = users.map(user => user._id);
let output2 = users.map(user => user.emails[0].address);
let output3 = null;

//users.map(user =>  console.log(user._id + ':"' + user.emails[0].address+'"')); 

for (let i=0; i < users.count(); i++) {
	output3 += output1[i]+':'+output2[i]+',';
}
return output3;
//return {
//  2013: "2013",
//  2014: "2014",
//  2015: "2015"
//};

}

There has got to be an easier way to do this right? Cause the manual attempt at building JSON is clearly not working.

Tat

3

Ok,

Made some more progress. Now code looks like -

userOptions: function() {
let users = Meteor.users.find({}, { fields: { “emails.address”: 1 } });

let output1 = users.map(user => user._id);
let output2 = users.map(user => user.emails[0].address);
let output3 = {};

for (let i=0; i < users.count(); i++) {
	output3[output1[i]] += output2[i];
}

console.log(output3);

return output3;

}

The problem is I’m getting some random undefined field in there.

Object {r5t8aQuKKXRrQYEbk: “undefinedtest1@test.com”, oyxBoiRYojNdEwEcZ: “undefinedtest2@test.com”, C52bs2QPEBAYw4DFR: “undefinedtest3@test.com”}

Which is really close to what i need. Why is the undefined showing up at the start of the email addresses?

Tat

4

Solved.

for (let i=0; i < users.count(); i++) {
output3[output1[i]] = output2[i];
}

Can’t believe it took me so long.

Tat

5

Why not a bit shorter?

var users = Meteor.users.find().fetch()

var output = users.reduce(function(output, user) {
  output[user._id] = user.emails[0].address
  return output
}, {})
6

hey,

your way works much better. I’m new to JS, so was wondering if you could clarify something for me.

what does the ‘, {}’ at the end of the users.reduce do? I understand that you are doing a .reduce on the output of the inner function.

Thanks so much.

Tat

7

That’s the initial value to use: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce

8

thanks so much, help is very much appreciated. I’ll have a look.