We Keep Coding

Query for sorting a date that is inside another object in firebase

I'm developing a chat in angularjs where I have a chat list view and a chat view.
What I'm trying to do is sorting my chat list to show the most recent chat on top using Firebase and JS, I did my research but all of the questions I found they have the date directly as a child but inside my DB my date is inside a 'lastMessage' key. My dates are the following format.
date: 1528417493034
Any help would be highly appreciated
My structure is the following:
"Users": {
"nCsXbTl8CcXvoviuL5Tt7kiV6Bn1" : {
"contacts" : {
"VN9AFnn4uXgDfoir8DWHnw54zrJ3" : {
"email" : "test#test.com",
"lastMessage" : {
"date" : 1528417493034,
"senderId" : "VN9AFnn4uXgDfoir8DWHnw54zrJ3",
"status" : "success",
"text" : "Yes?",
"type" : "text",
"uid" : "1528417493034VN9AFnn4uXgDfoir8DWHnw54zrJ3"
},
"name" : "test"
},
"cHuR26YaSgbO7ahSVLg1XG5HYer2" : {
"email" : "aaa#aaa.com",
"lastMessage" : {
"date" : 1528417068249,
"senderId" : "cHuR26YaSgbO7ahSVLg1XG5HYer2",
"status" : "success",
"text" : "Trigeeeers?",
"type" : "text",
"uid" : "1528417068249cHuR26YaSgbO7ahSVLg1XG5HYer2"
},
"name" : "aaa"
}
}
}
My chat list view is the following:
<div layout="row" class="main-chat-container" layout-wrap>
<div class="list-container" flex="30">
<div class="chat-header">
<p>Lista de Chats</p>
</div>
<div class="chats-list">
<div class="chats-header">
<p>Usuarios</p>
</div>
<div class="chats" ng-repeat="chat in chats">
<div class="email-container" ng-click="setUserData(chat)" ng-class="styleData.email == chat.email ? 'new-background' : ''">
<a>{{chat.email}}</a> <p ng-show="counter > 1">{{testData.number}}</p>
</div>
</div>
</div>
</div>
<div class-"chat-container" flex="70">
<ui-view></ui-view>
</div>
And the controller is the following
app.controller('chatController', function (currentAuth, $scope, $firebaseArray, $firebaseObject) {
$scope.chats = [];
$scope.getContactsList = function(){
var listRef = firebase.database().ref('Users').child(currentAuth.uid).child('contacts');
var test = firebase.database().ref('Users').child(currentAuth.uid).child('contacts');
var listArray = $firebaseArray(listRef);
var testArray = $firebaseArray(test);
$scope.chats = listArray;
console.log("TEST ARRAY IS ");
console.log(testArray);
}
$scope.getContactsList();
});

To so a users contacts on the timestamp of their last message, you'd do something like this:
var userRef = firebase.database().ref('Users').child(currentAuth.uid)
var contactsQuery = userRef.child('contacts').orderByChild("lastMessage/date");
Note that this will give you the contacts in chronological order, so you will have to reverse the result in your client.
Alternatively some folks keep an inverted value in a separate property in their database, e.g.
"VN9AFnn4uXgDfoir8DWHnw54zrJ3" : {
"email" : "test#test.com",
"lastMessage" : {
"date" : 1528417493034,
"invertedDate" : -1528417493034,
"senderId" : "VN9AFnn4uXgDfoir8DWHnw54zrJ3",
Since this invertedDate value is inverted, ordering on that property would give you the contacts in reverse chronological order, so that you don't have to reverse them in the client.

Set default selected in dropdown while binding Key-Value pair Object in AngularJs

I have a JavaScript Object in the following form, (Plnkr)
{
"1" : "John",
"2" : "Jane",
.
. //Continues.
}
I'm binding this Object to a dropdown using AngularJs, here is the html code
<select ng-model="CurrentName" ng-options="key as value for(key , value) in Names"></select>
And here is the Controller code
NamesScript.controller('NamesDropDown', function($scope) {
var Data = Result.Data; //This is a Parent Object I'm getting from a REST call. This contains the names Object.
$scope.Names = Data.names;
$scope.CurrentName = Data.CurrentName; //Yes getting the CurrentName separately it's NOT present in the Names Object.
//CurrentName Object is in this form {"7":"Foo"}
}
I'm getting the DropDown properly populated except that the default is always blank. How do I set the default value equal to the one I'm getting in CurrentName object?
Thanks.

check my plnkr i have a sample example for this. you need to specify value key in your controller
HTML
<!doctype html>
<html ng-app>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.0.6/angular.min.js"></script>
<script src="script.js"></script>
</head>
<body>
<div ng-controller="MyCntrl">
<select ng-model="prop.value" ng-options="v for v in prop.values">
</select>
</div>
</body>
</html>
Script.js
function MyCntrl($scope) {
$scope.prop = { "type": "select",
"name": "Service",
"value": "Service 3",
"values": [ "Service 1", "Service 2", "Service 3", "Service 4"]
};
}

Show different buttons matching array values

So here's my problem, i'm using AngularJS and i'm getting JSON from PHP, and displaying all my data with ng-repeat. I already have done this.
Now I want to check if some data is in "Array1" and if it is, change the correspndent data from the ng-repeat. I know it sounds really weird, but let me put an example with code:
Here's array1 values
{
"23",
"48",
"51"
}
So when i get the data, it's something like this:
{
id : "23",
name: "example"
}
And for every JSON object i'm using ng-repeat to display them all like this:
<div ng-model="data.posts" ng-repeat="post in posts | orderBy:'-' | unique: 'id'">
...
<button>This button will show if "id" matches</button>
<button>This button will show if "id" not matches</button>
</div>
I want to compare if an id of array1 matches an id from the JSON data and if it matches show one button and if not show other.
I'm on this like 2 weeks, and i can't get the problem solved, and i don't see any way to get it.
Thx for reading at least and sorry for my bad english!

Your array1 should be an array and can add a function in controller to check match id.
in controller:
$scope.array1 = ["23","48","51"];
$scope.checkInArray1 = function(id) {
var index = $scope.array1.indexOf(id);
if(index < 0){
return false;
} else {
return true;
}
};
and in your html:
<button ng-if="checkInArray1(post.id)">This button will show if "id" matches</button><br>
<button ng-if="!checkInArray1(post.id)">This button will show if "id" not matches</button>

Making the assumption that {"23","48","51"} should be a array ["23","48","51"]
You could do something like this:
Working Fiddle: http://jsfiddle.net/ravenous52/rgyom4yd/
myApp.controller('MyCtrl', ['$scope',
function($scope) {
$scope.knownIds = ["23", "48", "51"];
$scope.data = {
posts: [{
id: "23",
name: "example23"
}, {
id: "51",
name: "example51"
}, {
id: "99",
name: "example99"
}]
}
}
]);
<section ng-controller="MyCtrl">
<div ng-repeat="post in data.posts">
<button ng-show="knownIds.indexOf(post.id) >-1">This button will show if "id" matches</button>
<button ng-hide="knownIds.indexOf(post.id) >-1">This button will show if "id" not matches</button>
</div>
</section>

https://jsfiddle.net/alair016/4wc44on1/
<div ng-app='myApp' ng-controller="MyCtrl">
<div ng-model="data.posts" ng-repeat="post in data.posts">
<button ng-if="array1.indexOf(post.id) >-1">{{post.name}} id matches</button>
<button ng-if="array1.indexOf(post.id) == -1">{{post.name}} id does not match</button>
</div>
</div>
var myApp = angular.module('myApp',[])
.controller('MyCtrl', ['$scope', function($scope) {
$scope.array1 = ["23","48","51"];
$scope.data = {
posts : [
{
id : "23",
name: "example"
},
{
id: "24",
name:"second example"
}
]
};
}]);

how to update nested json array using meteor.js

I am want to insert these values into mongodb and here is my code, i am able to insert it but when i was updating only access_policy inside admin_section, i was not able to do that, can anyone please help me, how can i solve it :
meteor.json
{
"_id" : ObjectId("555ebffa7c88507a4a683e81"),
"section_id" : "Admin Section",
"is_active" : true,
"admin_section" : [
{
"_id" : 1,
"info" : "Setup custom access policy for user groups",
"sub_section" : "Setup - access policy",
"access_policy" : "ROOT"
},
{
"_id" : 2,
"info" : "Customize access policy for main sections",
"sub_section" : "Manage - access policy",
"access_policy" : "ROOT"
},
{
"_id" : 3,
"info" : "Manage user groups for DX-Client application",
"sub_section" : "Manage - user groups",
"access_policy" : "ROOT"
},
{
"_id" : 4,
"info" : "Manage users for DX-Client application",
"sub_section" : "Create - user",
"access_policy" : "ADMINISTRATOR"
},
],
"access_policy" : "ADMINISTRATOR"
}
meteor.html
<table class="table table-bordered">
<tbody>
{{#each temp_admin_section}}
{{#if admin_section}}
<tr class="bgLight">
<td class="left" id="one"><b>{{ section_id }}</b></td>
<td class="left" id="two"><b>RESTRICTED</b> - <code contenteditable="true" class="edited"><input value="{{ access_policy }}" /></code><a class="add-access pull-right">add</a></td>
</tr>
{{#each admin_section}}
<tr>
<td class="left" id="one">{{ sub_section }}</td>
<td class="left" id="two">RESTRICTED - <code contenteditable="true" class="edited">
<input value="{{ access_policy }}" /></code></td>
</tr>
{{/each}}
{{/if}}
{{/each}}
</tbody>
</table>
meteor.js
'change .edited': function(event, template){
var to = event.target.value;
var list = to.split(",");
map.update(
{"_id": this._id, "admin_section._id" : 1},
{$set: {"admin_section.$.access_policy": list}}
);
}

All client-side code is considered untrusted unless you call a Meteor.call and let a server-side method do the update. If you look in the console, you will probably see an error like this:
{
error: 403,
reason: "Not permitted. Untrusted code may only update documents by ID.",
details: undefined, message: "Not permitted. Untrusted code may only update documents by ID. [403]",
errorType: "Meteor.Error"
}
On the client-side, you can only update 1 document at a time, and you must choose the document to update by ID, so the 1st argument needs to be a mongo document ID, not a mongo selector:
MyCollection.update(
this._id,
{
$set: { "admin_section.1.access_policy": "TEST" }
}
)
Also, to update a sub-document of an array, rather than specifying the ID in the 1st argument as a selector, notice how I am specifying the ID inside the $set statement.
If you want to update all elements in the array, you have to loop through all of them individually:
var doc = MyCollection.findOne(this._id);
var adminSections = doc.admin_section;
for (i = 0; i < adminSections.length; i++) {
// If you need to access a value in the nested doc:
var nestedDoc = adminSections[i];
MyCollection.update(
this._id,
{
$set: { "admin_section." + (i+1) + ".access_policy": "someValue" }
}
);
{

AngularJS factory issue

In order to make use of Angular JS I tried to use Factory for my data stack...
Now, It does not work. I have just put a simple json data to be returned by factory, and then
the script has stopped working. It is the most basic example of angularjs as it uses json to
repeat and iterate through.
Here is all angularjs that I have written:
var Item = angular.module("Item", ['ngRoute']);
Item.config(function($routeProvider){
$routeProvider
.when("/add", {
controller : "ItemController",
templateUrl : "index.html"
})
.when("/edit", {
controller : "ItemController",
templateUrl : "index.html"
});
});
Item.factory("ItemsFactory", function(){
var items = [
{ name : "Washing Powder",
price : "2000",
balance : 14
},
{ name : "Shampoo",
price : "8500",
balance : 03
},
{ name : "Soap",
price : "1850",
balance : 27
}
];
var factory = {};
factory.getItems() = function(){
return items;
};
factory.postItems() = function(){
// POST items
};
return factory;
});
Item.controller("ItemController", function($scope, ItemsFactory){
$scope.items = ItemsFactory.getItems();
init();
function init()
{
$scope.items = ItemsFactory.getItems();
}
$scope.AddNewItem = function(){
$scope.items.push({
name : $scope.NewItem.name,
price : $scope.NewItem.price
});
};
});
And here is the HTML markup:
<!DOCTYPE html>
<html >
<head>
<title>Practicing AngularJS Framework...!</title>
<script src="angular.js" type="text/javascript"></script>
<script src="ngroute.js" type="text/javascript"></script>
<script src="scripts.js" type="text/javascript"></script>
</head>
<body data-ng-app="Item">
<div data-ng-controller="ItemController">
<div data-ng-repeat="each in items">
<p>Item {{ each.name }} costs {{ each.price }}.</p>
</div>
<div>
<input type="text" data-ng-model="NewItem.name" />
<input type="text" data-ng-model="NewItem.price" />
<br />
<input type="submit" value="Add Item" data-ng-click="AddNewItem()" />
</div>
</div>
</body>
</html>
It does not load of the json content to repeat them instantly...Nothing happens..

I think it is better to use some thing like this to return value in service :
Item.factory("ItemsFactory", function(){
var items = [
{ name : "Washing Powder",
price : "2000",
balance : 14
},
{ name : "Shampoo",
price : "8500",
balance : 03
},
{ name : "Soap",
price : "1850",
balance : 27
}
];
return {
getItems: function(){
return items;
},
postItems:function(){
}
});
also it think :
factory.getItems() = function(){}
is wrong and the correct is :
factory.getItems = function(){}