Restrictive Queries with Firebase

Developer
David
Size
2,083 Kb
Views
24,288
  1. Restrictive Queries with Firebase Previews
  2. Restrictive Queries with Firebase HTML Codes
  3. Restrictive Queries with Firebase JS Codes

How do I make an restrictive queries with firebase?

What is a restrictive queries with firebase? How do you make a restrictive queries with firebase? This script and codes were developed by David on 14 November 2022, Monday.

Restrictive Queries with Firebase Previews
IQ Test

Restrictive Queries with Firebase - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Restrictive Queries with Firebase</title>
</head>
<body> <div data-ng-app="firelimit"> <div data-ng-controller="LimitCtrl"></div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.9/angular.min.js"></script>
<script src="https://cdn.firebase.com/js/client/1.0.6/firebase.js"></script>
<script src="https://cdn.firebase.com/libs/angularfire/0.7.1/angularfire.min.js"></script> <script src="js/index.js"></script>
</body>
</html>

Restrictive Queries with Firebase - Script Codes JS Codes

/*global Firebase*/
(function (angular) { var app = angular.module('firelimit', ['firebase']); // Store the firebase url as a constant app.constant('FBURL', 'https://brilliant-fire-2753.firebaseio.com/messages'); app.service('MessagesRef', function ($firebase, FBURL) { return { create: function () { return new Firebase(FBURL); } }; }); app.service('MessagesService', function(MessagesRef, $q) { var messagesRef = MessagesRef.create(); return { childAdded: function(cb) { messagesRef.on('child_added', function(snapshot, prev) { //console.log(prev); cb.call(this, snapshot); }); }, getMostRecent: function(limit, startAt) { var deferred = $q.defer(); messagesRef.limit(limit ? limit : 10).once('value', function(snapshot) { deferred.resolve(snapshot.val()); }); return deferred.promise; }, getBetweenItems: function(startAt, endAt) { var deferred = $q.defer(); messagesRef.startAt(null, startAt).endAt(null, endAt).once('value', function(snapshot) { console.log(snapshot.val()); deferred.resolve(snapshot.val()); }); return deferred.promise; }, page: function(lastItem, items) { var deferred = $q.defer(); messagesRef.startAt(null, lastItem).limit(items).once('value', function(snapshot) { console.log(snapshot.val()); deferred.resolve(snapshot.val()); }); return deferred.promise; } }; }); app.controller('LimitCtrl', ['$scope', 'MessagesService', function ($scope, MessagesService) { $scope.messages = []; MessagesService.getMostRecent(5); //MessagesService.getBetweenItems('-JIQWA3ZPdhrYE-2Kvh_', null); //MessagesService.page('-JIQWA3ZPdhrYE-2Kvh_', 10); /*MessagesService.childAdded(function(promise) { //console.log(promise.val()); });*/ } ]);
})(window.angular);
Restrictive Queries with Firebase - Script Codes
Restrictive Queries with Firebase - Script Codes
Home Page Home
Developer David
Username david-east
Uploaded November 14, 2022
Rating 3
Size 2,083 Kb
Views 24,288
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