Doing one Google Script APP. With server side method that returns array of string.
getClassRoomList().
Can you please suggest what is wrong with my current HTML? As the success handler is running all well on response. But the ng variable message is not reflecting on page; while the jQuery does populate the table.
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<base target="_top">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.js"></script>
<script>
var app = angular.module('myApp',[]);
app.controller('mainCtrl',function($scope){
$scope.message = [];
$scope.populateTable = function(array){
//Setting ng variable; but the page doesn't show anything
$scope.message = array;
//Setting the Table by JQuery; it does work.
var table = $('#myTable');
table.empty();
for (var i = 0; i < array.length; i++) {
var item = '<tr><td><div class="classname">' + array[i] +'</div></td></tr>';
table.append(item);
}
};
$scope.mainClick = function(){
$scope.message = $scope.message + 'chirag';
google.script.run.withSuccessHandler($scope.populateTable).getClassRoomList();
};
});
</script>
</head>
<body ng-controller="mainCtrl">
<button ng-click="mainClick()">Proceed</button>
<table id="myTable"></table>
<div ng-bind="message"></div>
</body>
</html>
This works. Thanks. google.script.run.withSuccessHandler((e) => {$scope.populateTable(e); $scope.$apply();}).getClassRoomList();
I have a method that creates an object and pushes it to an array
$scope.contracts = [];
$scope.addContract = function () {
var contract = {
...
}
$scope.contracts.push(contract);
console.log($scope.contracts);
}
now in my DOM, i have the following (merely for debugging)
{{contracts}}
But this doesn't update. I validate in the console, that the object is in the array.
Why doesn't the model update?
I've already tried various applications of $scope.$apply, but they all result in an
$apply already in progress
Something must be wrong with your code, check your DOM. Does anything happen when you call your function? Heres is a working example:
var app = angular.module("myApp",[]);
app.controller("test", function($scope){
$scope.contracts = [];
$scope.addContract = function () {
var contract = {
"con":"tract"
}
$scope.contracts.push(contract);
console.log($scope.contracts);
}
});
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.1/angular.js"></script>
<script src="script.js"></script>
</head>
<body ng-controller="test">
{{contracts}}
<button ng-click="addContract()">Add contract</button>
</body>
</html>
In my HTML I have this img link:
imgURL is set in the controller:
$scope.imgURL = 'img/img_'+$scope.img.id+'.jpg;
With the first changes it works perfectly, but after a while the image doesn't show anymore..??
I read an tried several "solutions" like adding a parameter with random value so it forces to reload, but it didn't work. I log the url in the console and see it changing, so that's not the point.
What can cause the not appearing of the image after a while, it looks so random..?
Your answer is highly appreciated, I'm rather desperate :-/
I don't know about your HTML structure or code but with AngularJS I would do such a image source rotation with something like this. It's simple and works:
angular.module('myApp', [])
.controller('mainController', function($scope, $interval) {
var images = [
'https://placehold.it/350x150',
'https://placehold.it/450x250',
'https://placehold.it/250x250'
];
var i = 0;
$scope.image = images[i];
$interval(function() {
i++;
if (i < images.length) {
$scope.image = images[i];
} else {
$scope.image = images[0];
i = 0;
}
}, 3000, 0);
});
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
</head>
<body ng-app="myApp" ng-controller="mainController">
<img ng-src="{{image}}">
</body>
</html>
You can apply your image variable manipulation to this easily. The main part in the example above is to use ng-src.
I have set up a plunker with basically below code.
I am unable to see the default value [Bank Account Number] getting selected in the drop down. I see that model is getting updated. But for some reasons, my default value do not get chosen. Can someone help me?
//index.html
<!DOCTYPE html>
<html ng-app="app">
<head>
<script data-require="angular.js#1.0.x" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.js" data-semver="1.0.7"></script>
<script src="script.js"></script>
<script src="services.js"></script>
</head>
<body ng-controller="homeCtrl">
<h1>Other Criteria: {{ otherCriteria.optionText }}</h1>
<div>
<select data-ng-model="otherCriteria"
data-ng-options="o as o.optionText for o in criteria">
</select>
</div>
</body>
</html>
//services.js
app.factory("homeService", [
"$q",
function($q) {
function _getDropdownValues() {
var deferred = $q.defer();
var dropdownValues = [{"optionValue":"Bank_Account_Number","optionText":"Bank Account Number","selected":false},{"optionValue":"Bank_Security_Number","optionText":"Bank Security Number","selected":false},{"optionValue":"Cusip","optionText":"Cusip","selected":false},{"optionValue":"Transaction_Description","optionText":"Description","selected":false}];
deferred.resolve(dropdownValues);
return deferred.promise;
}
return {
getDropdownValues: _getDropdownValues
}
}
]);
//script.js
var app = angular.module("app", []);
app.controller("homeCtrl", function($scope, homeService) {
$scope.otherCriteria = {
optionValue: "Bank_Account_Number",
optionText: "Bank Account Number",
selected: false
};
homeService.getDropdownValues()
.then(function(dropdownValues) {
$scope.criteria = dropdownValues;
})
});
Try this plunker.
It's always a better idea to reference a default value via the index of the collection (however you want to reference it)
$scope.criteria = dropdownValues;
$scope.otherCriteria = $scope.criteria[0];
You can find more information here
Basically: Angular.JS uses native JavaScript comparison for comparing the objects. In JavaScript, unrelated to Angular.JS or anything, comparing objects (object literals) is “by reference”, so it doesn’t factor the similarity of the objects. Only checks if the two references compared point to the same object in memory or not
I am trying to remove elements from the array $scope.items so that items are removed in the view ng-repeat="item in items"
Just for demonstrative purposes here is some code:
for(i=0;i<$scope.items.length;i++){
if($scope.items[i].name == 'ted'){
$scope.items.shift();
}
}
I want to remove the 1st element from the view if there is the name ted right? It works fine, but the view reloads all the elements. Because all the array keys have shifted. This is creating unnecessary lag in the mobile app I am creating..
Anyone have an solutions to this problem?
There is no rocket science in deleting items from array. To delete items from any array you need to use splice: $scope.items.splice(index, 1);. Here is an example:
HTML
<!DOCTYPE html>
<html data-ng-app="demo">
<head>
<script data-require="angular.js#1.1.5" data-semver="1.1.5" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.1.5/angular.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div data-ng-controller="DemoController">
<ul>
<li data-ng-repeat="item in items">
{{item}}
<button data-ng-click="removeItem($index)">Remove</button>
</li>
</ul>
<input data-ng-model="newItem"><button data-ng-click="addItem(newItem)">Add</button>
</div>
</body>
</html>
JavaScript
"use strict";
var demo = angular.module("demo", []);
function DemoController($scope){
$scope.items = [
"potatoes",
"tomatoes",
"flour",
"sugar",
"salt"
];
$scope.addItem = function(item){
$scope.items.push(item);
$scope.newItem = null;
}
$scope.removeItem = function(index){
$scope.items.splice(index, 1);
}
}
For anyone returning to this question. The correct "Angular Way" to remove items from an array is with $filter. Just inject $filter into your controller and do the following:
$scope.items = $filter('filter')($scope.items, {name: '!ted'})
You don't need to load any additional libraries or resort to Javascript primitives.
You can use plain javascript - Array.prototype.filter()
$scope.items = $scope.items.filter(function(item) {
return item.name !== 'ted';
});
Because when you do shift() on an array, it changes the length of the array. So the for loop will be messed up. You can loop through from end to front to avoid this problem.
Btw, I assume you try to remove the element at the position i rather than the first element of the array. ($scope.items.shift(); in your code will remove the first element of the array)
for(var i = $scope.items.length - 1; i >= 0; i--){
if($scope.items[i].name == 'ted'){
$scope.items.splice(i,1);
}
}
Here is filter with Underscore library might help you, we remove item with name "ted"
$scope.items = _.filter($scope.items, function(item) {
return !(item.name == 'ted');
});
I liked the solution provided by #madhead
However the problem I had is that it wouldn't work for a sorted list so instead of passing the index to the delete function I passed the item and then got the index via indexof
e.g.:
var index = $scope.items.indexOf(item);
$scope.items.splice(index, 1);
An updated version of madheads example is below:
link to example
HTML
<!DOCTYPE html>
<html data-ng-app="demo">
<head>
<script data-require="angular.js#1.1.5" data-semver="1.1.5" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.1.5/angular.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div data-ng-controller="DemoController">
<ul>
<li data-ng-repeat="item in items|orderBy:'toString()'">
{{item}}
<button data-ng-click="removeItem(item)">Remove</button>
</li>
</ul>
<input data-ng-model="newItem"><button data-ng-click="addItem(newItem)">Add</button>
</div>
</body>
</html>
JavaScript
"use strict";
var demo = angular.module("demo", []);
function DemoController($scope){
$scope.items = [
"potatoes",
"tomatoes",
"flour",
"sugar",
"salt"
];
$scope.addItem = function(item){
$scope.items.push(item);
$scope.newItem = null;
}
$scope.removeItem = function(item){
var index = $scope.items.indexOf(item);
$scope.items.splice(index, 1);
}
}
Just a slight expansion on the 'angular' solution. I wanted to exclude an item based on it's numeric id, so the ! approach doesn't work.
The more general solution which should work for { name: 'ted' } or { id: 42 } is:
mycollection = $filter('filter')(myCollection, { id: theId }, function (obj, test) {
return obj !== test; });
My solution to this (which hasn't caused any performance issues):
Extend the array object with a method remove (i'm sure you will need it more than just one time):
Array.prototype.remove = function(from, to) {
var rest = this.slice((to || from) + 1 || this.length);
this.length = from < 0 ? this.length + from : from;
return this.push.apply(this, rest);
};
I'm using it in all of my projects and credits go to John Resig John Resig's Site
Using forEach and a basic check:
$scope.items.forEach(function(element, index, array){
if(element.name === 'ted'){
$scope.items.remove(index);
}
});
At the end the $digest will be fired in angularjs and my UI is updated immediately without any recognizable lag.
If you have any function associated to list ,when you make the splice function, the association is deleted too. My solution:
$scope.remove = function() {
var oldList = $scope.items;
$scope.items = [];
angular.forEach(oldList, function(x) {
if (! x.done) $scope.items.push( { [ DATA OF EACH ITEM USING oldList(x) ] });
});
};
The list param is named items.
The param x.done indicate if the item will be deleted. Hope help you. Greetings.
Using the indexOf function was not cutting it on my collection of REST resources.
I had to create a function that retrieves the array index of a resource sitting in a collection of resources:
factory.getResourceIndex = function(resources, resource) {
var index = -1;
for (var i = 0; i < resources.length; i++) {
if (resources[i].id == resource.id) {
index = i;
}
}
return index;
}
$scope.unassignedTeams.splice(CommonService.getResourceIndex($scope.unassignedTeams, data), 1);
My solution was quite straight forward
app.controller('TaskController', function($scope) {
$scope.items = tasks;
$scope.addTask = function(task) {
task.created = Date.now();
$scope.items.push(task);
console.log($scope.items);
};
$scope.removeItem = function(item) {
// item is the index value which is obtained using $index in ng-repeat
$scope.items.splice(item, 1);
}
});
My items have unique id's. I am deleting one by filtering the model with angulars $filter service:
var myModel = [{id:12345, ...},{},{},...,{}];
...
// working within the item
function doSthWithItem(item){
...
myModel = $filter('filter')(myModel, function(value, index)
{return value.id !== item.id;}
);
}
As id you could also use the $$hashKey property of your model items: $$hashKey:"object:91"