Getting an individuals email and addressinformation from Meteor.users

help
1

Hi All,

I’m trying to generate a report that lists the number of children signed up for camp.

In the html, I iterate through each camper and try to get a guardians email address by calling a function to retrieve the information from the Meteor.users collection.

<tbody *ngFor="let camper of campers; let i = index">
	<tr>
		<td>{{ i + 1}}</td>
		<td>{{ camper.lastName }}</td>
		<td>{{ camper.firstName }}</td>
		<td>{{ getGuardianEmail(camper.guardian) }}</td>
		<td>{{ camper.dob }}</td>
		<td>{{ camper.gender }}</td>
	</tr>
</tbody>

In the getGuardianEmail I do:

    getGuardianEmail(guardianId: string): string {
        console.log("@getGuardianEmail guardian - ", guardianId);
        var user = Meteor.users.findOne({"_id":"guardianId"});
        console.log("user - ", user);
        return user.emails[0].address;
    }

However the user does exist even though the guardian that is passed through is a valid _id.

From console:

@getGuardianEmail guardian -  CrFe8ktsAmKEga4Wp
user -  undefined 
Exception from Tracker recompute function: yada yada yada used by: Cannot read property 'emails' of undefined

I have a similar function that tries to get the address information.

Any help would be appreciated.

2 
var user = Meteor.users.findOne({"_id":"guardianId"});

Remove the quotes around “guardianId” :wink:

1 Like
3

Thanks for the quick reply! You’re right the quotes should be removed, however I’m still getting the same results! :dizzy_face:

4

Have you subscribed to the guardians?

5

I have this in my publications/users.ts file:

import { Meteor } from 'meteor/meteor';

Meteor.publish("directory", function () {
    return Meteor.users.find({}, {fields: {emails: 1, profile: 1}});
});

And in my report component’s constructor I have:

Meteor.subscribe("directory");

6

Hi All,

Just wondering if anyone out there may have some other ideas.
Is what I’m trying to do possible?
Has anyone accomplished something similar?

TIA

7

Remember that the guardian object won’t necessarily be available at the same time the campers are. So you might end up with a situation where the campers are loaded, they try to find the guardian, but the guardian sub has not synchronized yet, and then crashes.

In your return line, try
return user && user.emails[0].address;
It will not return anything until the user is available.

Also, having a pub like this Meteor.users.find({} .. with no selector or limit might be a bad idea if you have thousands of users, right? I would sub only to the guardians.

8

Hi @jorgeer,

Thanks for the reply. I’m not sure I follow why the guardians wouldn’t be loaded.
The guardian is a field within the campers collection and it shares a 1:1 relationship to a Meteor.user’s _id.
I also ensure the handle to the subscription is ready in the constructor.

Is the Meteor.users collection not ready? Perhaps I need to ensure that it’s ready as well?

9

Do you have 2 different collections, and 2 different subscriptions? Could you provide the constructor?