Develop Reference

Update collection using email inplace of _Id as the unique Id

I have 2 collection tables that only share emails as the unique ids of these 2 tables. The first one is Meteor.users() and SchoolStudents. I want to update the SchoolStudents collection based on the user's email. Though I have successfully updated using _id but the update isn't working using email as the Id. What's the better approach?
In this, it returned a success feedback but no update is made to the record. Bert.alert('Record updated successfully', 'success', 'growl-top-right');
Client code:
let user = Meteor.user();
let studentemail = user && user.emails && user.emails[0].address;
if (studentemail) {
console.log(studentemail);
Meteor.call('UpdateUser', studentemail, function (error, response) {
if (error) {
Bert.alert(error.reason, 'danger', 'growl-top-right');
return false;
} else {
Bert.alert('Record updated successfully', 'success', 'growl-top-right');
}
})
}
Server method
SchoolStudents.update({useremail: studentemail}, {$set: {'status.active': true, 'status.activedate': new Date()}});
This is a sample document from the SchoolStudents collection:
{
"_id" : "xgxZJFRkXGhHmHupY",
"firstname" : "Kehinde",
"lastname" : "Adeoya",
"middlename" : "Adekusibe",
"username" : "ken10ward",
"password" : "PvyLwY9d",
"useremail" : "kadeoya#appzonegroup.com",
"studentclass" : "ss8",
"dateofbirth" : "9-Mar-00",
"gender" : "f",
"ethinicity" : "black",
"mobile" : "8023472442",
"address" : "7 Abrahamoivc",
"city" : "bolson",
"lg" : "loveland",
"state" : "ekiti",
"country" : "Ukraine",
"registra" : "kadeoya",
"status" : {
"active" : false,
"activedate" : null
},
"userId" : "n5rqFSHbhm7zqADyB",
"createdAt" : ISODate("2017-09-05T18:45:14.877Z"),
"friendlySlugs" : {
"slug" : {
"base" : "kehinde-adeoya",
"index" : 5
}
},
"slug" : "kehinde-adeoya-5"
}
This is the server update code:
UpdateUser: function (studentemail) {
check(studentemail, String);
if (!Meteor.userId()) {
Meteor.Error('Not authorized');
return false;
} else {
SchoolStudents.update({useremail: studentemail}, {status: {active: true, activedate: new Date()}}, { upsert: true });
}
}

As it has been pointed to you, you're using user && user.emails && user.emails[0].address construct wrong way.
I suggest you to use this template to do things like that:
let studentemail;
try {
studentemail = user.emails[0].address.valueOf();
} catch (e) {
studentemail = null;
}
if (studentemail != null) {
...
}
This way you can omit numerous checks, like user != null and user.emails != null and user.emails.length > 0 etc and it will be guaranteed that in your studentemail variable you will get either null or user email address.
Added: User email address could be undefined, that's why you need != null check (non-strict). It will be false if variable is undefined or null.

Firebase update node instead of adding new one

This is currently how my firebase database looks.
I am trying to perform an update where when I click the like button, the user will appear in liked attribute (the second one above). currently it is just hardcoded but the code is not doing quite what i want it to do.
function liked(name, useruid, user_liked){
var postData = {
name: name,
useruid: useruid,
user_liked: user_liked
};
var newPostKey = firebase.database().ref().child('users').push().key;
var updates = {};
updates['/users/' + name + '/' + '/liked/' + user_liked] = postData;
return firebase.database().ref().update(updates);
}
I call this function with liked(current_user_name, user_array[i].useruid, 'Hannah')
I would like then the liked: "liked attribute to read liked: "liked", "Hannah"
However instead it does the following below:
It has added in information I do not want and instead of adding to the array it has transformed it. it must be a tiny change but i cant quite see it
exported json before update:
{
"users" : {
"rich" : {
"gender" : "male",
"liked" : "liked",
"name" : "rich",
"not_liked" : "liked",
"username" : "rich#rich.com",
"useruid" : "5xO85K2EBOS6Itj7lKoGafm19i02"
}
}
}
exported json after update:
{
"users" : {
"rich" : {
"gender" : "male",
"liked" : {
"Hannah" : {
"name" : "rich",
"user_liked" : "Hannah",
"useruid" : "5xO85K2EBOS6Itj7lKoGafm19i02"
}
},
"name" : "rich",
"not_liked" : "liked",
"username" : "rich#rich.com",
"useruid" : "5xO85K2EBOS6Itj7lKoGafm19i02"
}
}
}

Dynamic field names in MongoDB using Mongoose

. Sample of collection Flights :
{
"Orig" : "AGP",
"Dest" : "CMN",
"Description_Flight" : "One-Stop-Narrow Type",
"Description_Flight_2" : "WESTERN EUROPE/WESTERN EUROPE",
"Mkt_Al" : "0B"
}
. Sample of collection Coeff :
{
"Regions" : "WESTERN EUROPE/WESTERN EUROPE",
"Non-Stop-Narrow Type" : 2.4109,
"Non-Stop-Supersonic" : 2.71828,
"One-Stop-Narrow Type" : 2.22554,
"One-Stop-Turbo" : 0.92312,
"One-Stop-Wide Type" : 11.24586,
"One-Stop Online-Turbo" : 0.07577
}
What I want ?
I Have my starting collection, Flights and for each document I want to put a score, a score which based on the Description_Flight_2 and Description_Flight.
Example :
For example, in my sample I have :
"Description_Flight" : "One-Stop-Narrow Type",
"Description_Flight_2" : "WESTERN EUROPE/WESTERN EUROPE",
So, I should go to the Coeff collection, and find the region :
"WESTERN EUROPE/WESTERN EUROPE"
and then take the appropriate value, here I should take this value in this line :
"One-Stop-Narrow Type" : 2.22554,
I have tried this :
mongoose.connect('mongodb://localhost/mydb');
var cSchema = new Schema({},{ strict: false, collection: 'flights' }),
dflights = mongoose.model("flights", cSchema);
var rSchema = new Schema({},{ strict: false, collection: 'coeff' }),
coeff = mongoose.model("coeff", rSchema);
mongoose.set('debug', false);
mongoose.connection.on("open", function (err) {
if (err) throw err;
dflights.find({}).lean().exec(function (err, flights) {
if (err) throw err;
flights.forEach(function(flight) {
var Flight_Description = "", score =0 ;
coeff.findOne({Regions : flight.Description_Flight_2}).lean().exec(function (err, coef) {
And here the important lines :
Flight_Description = flight.Description_Flight;
score = (coef != null ) ? coef.Flight_Description : "Missed data";
Here the last lines
if ( score != 0)
dflights.collection.update({_id:flight._id}, { $set : { score :score } } );
});
});
});
});
Please how can I achieve the above ?

The correct code should be:
score = (coef != null ) ? coef[Flight_Description] : "Missed data";

Sort by date field in object of array with Meteor

I have added an array of objects to my user collection in my Meteor app, called contacts. It now looks like this:
{
"_id" : "p6c4cSTb3cHWaJqpG",
"createdAt" : ISODate("2016-05-11T11:30:11.820Z"),
"services" : {
.....
},
"username" : "admin",
"emails" : [
{
"address" : "email#email.com",
"verified" : true
}
],
"points" : 28,
"contacts" : [
{
"when" : ISODate("2016-06-02T12:22:53.747Z"),
"who" : "4YBufbE9PByJBkasy"
},
{
"when" : ISODate("2016-06-02T12:00:41.833Z"),
"who" : "EvF7DbFazmiuG86mD"
},
{
"when" : ISODate("2016-06-02T12:21:41.415Z"),
"who" : "MNFTSzjjzmYWgDvey"
}
]
}
I can display the contacts on my page just fine, but they are in the order that they appear in the collection. I would like to sort them by the date in the when field. Is this possible?
My helper method:
Template.contacts.helpers({
'cont': function(){
var user = Meteor.user();
return user;
}
});
and my Template:
<template name="contacts">
{{#each cont.contacts}}
<h1>{{who}}</h1>
{{/each}}
</template>

Akram Saouri was on the right track, I just needed to dig a little deeper. So I'll post the 100% working solution I came up with off that. The docs are your friend
Client.js:
Template.contacts.helpers({
'cont': function(){
var contacts = Meteor.user().contacts;
var result = contacts.sort(function (a,b) {
if (a.when > b.when){
return -1;
}
if (a.when < b.when){
return 1;
}
return 0;
});
return result;
}
});
Blaze Template:
<template name="contacts">
{{#each cont}}
<h1>{{who}}</h1>
{{/each}}
</template>

You can send the contacts array directly from the helpers and pre-sorted it like this :
Template.contacts.helpers({
'cont': function(){
var user = Meteor.user();
var contacts = user.contacts.sort({'when':'-1'})
return contacts;
}
});
In this way, you blaze 'll look much simpler :
<template name="contacts">
{{#each contacts}}
<h1>{{who}}</h1>
{{/each}}
</template>

How to access Json object element values if it is a json string in Angular

I persist some DB table column values as json string and later on send DB table values as a json object into front end.
[
{
"jobId":"efe0ace0-8ed9-45ff-9232-974cbdc89b86",
"jobType":"TestExecutionJob",
"nextRun":"N/A",
"lastRun":"2015-11-26 13:26:10.664",
"createdDate":"2015-11-26 13:26:10.664",
"executor":"sam",
"JobDetails":"{\"environment\":\"AA\",\"EmailRecipients\":[\"sam.sam11#gmail.com\"],\"extraParams\":{\"FileName\":\"myTest.xml\"}}",
"status":"active",
"elapsedTime":"18 minutes ago"
}
]
I have tried with angularJs ng-repeatbut nothing display.Please let me know how can i accessJobDetails values.(environment,EmailRecipients and FileName)
<ul><li ng-repeat="t in row.entity.JobDetails">{{t.environment}}</li></ul>
Js File
'use strict';
var tepTableModule = angular.module('test',
[ 'ngAnimate', 'ngTouch','ui.grid','ngResource' ]).factory('Service',
function($resource) {
return $resource('/api/jobs', {});
});
tepTableModule
.controller(
'tepTableCtrl',
function($scope, Service) {
$scope.TestData = Service.query();
var Plantemplate ='<div><ul><li ng-repeat="t in row.entity.JobDetails">{{t.FileName}}</li></ul></div>';
$scope.tableData = {
data : 'TestData',
groupsCollapsedByDefault : true,
enablePinning : true,
columnDefs : [ {
field : 'jobId',
displayName : 'jobId',
visible : false
}, {
field : 'JobDetails',
displayName : 'Plan Name',
cellTemplate : Plantemplate,
visible : true
},
{
field : 'jobType',
displayName : 'JobType',
visible : true
},
{
field : 'environment',
displayName : 'Environments',
visible : true
},
{
field : 'status',
displayName : 'Status',
visible : true
},
{
field : 'elapsedTime',
displayName : 'LastRun',
visible : true
},
{
field : 'JobDetails.EmailRecipients',
displayName : 'Email Recipients',
visible : true
},
{
field : 'executor',
displayName : 'Executor',
visible : true
}
],
sortInfo: {
fields: ['elapsedTime'],
directions: ['desc']
},
plugins : [ new ngGridAutoRowHeightPlugin() ]
};
$scope.changeGroupBy = function(group) {
$scope.gridOptions.groupBy(group);
}
$scope.clearGroupBy = function() {
$scope.gridOptions.$gridScope.configGroups = [];
$scope.gridOptions.groupBy();
}
});
HTML
<div ng-controller="tepTableCtrl">
<div ui-grid="tableData" class="grid"></div>
</div>

first parse string to object and then use it
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', ['$scope', function($scope) {
$scope.json = [
{
"jobId":"efe0ace0-8ed9-45ff-9232-974cbdc89b86",
"jobType":"TestExecutionJob",
"nextRun":"N/A",
"lastRun":"2015-11-26 13:26:10.664",
"createdDate":"2015-11-26 13:26:10.664",
"executor":"sam",
"JobDetails":"{\"environment\":\"AA\",\"EmailRecipients\":[\"sam.sam11#gmail.com\"],\"extraParams\":{\"FileName\":\"myTest.xml\"}}",
"status":"active",
"elapsedTime":"18 minutes ago"
}
].map(function(value){
value.JobDetailParse = JSON.parse(value.JobDetails);
return value;
})
}]);
</script>
Html :
<div ng-repeat = "t in json">
{{t.JobDetailParse.environment}}
</div>

Why not parse the data, IE turn it from string to object?
newObj = JSON.parse(yourString);
Then use ng-repeat on it.