I'm wondering how to show a simple loader before data was loaded. I'm using ng-grid-1.3.2 I'm googling but I didn't find any example. Bye
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6 Answers
like Maxim Shoustin suggested you can use the angularjs-spinner from Jim Lavin which uses (deprecated) Response Interceptors.
I think it's explained best here : http://codingsmackdown.tv/blog/2013/04/20/using-response-interceptors-to-show-and-hide-a-loading-widget-redux/
In a nutshell, in his first solution, what you have to do for your ng-grid app is:
1) Add the loading gif to your html (for loading gif look here)
<div id="loadingWidget" class="row-fluid ui-corner-all" style="padding: 0 .7em;" loading-widget >
<div class="loadingContent">
<p>
<img alt="Loading Content" src="images/ajax-loader.gif" /> Loading
</p>
</div>
</div>
2) In your code as soon as you have declared your app level module add the Response Interceptors for http requests to the configuration block
var app = angular.module('myCoolGridApp', ['ngGrid']);
app.constant('_START_REQUEST_', '_START_REQUEST_');
app.constant('_END_REQUEST_', '_END_REQUEST_');
app.config(['$httpProvider', '_START_REQUEST_', '_END_REQUEST_', function ($httpProvider, _START_REQUEST_, _END_REQUEST_) {
var $http,
interceptor = /* see extra details on codingsmackdown.tv */
$httpProvider.responseInterceptors.push(interceptor);
}
3) and then add your loadingWidget directive
app.directive('loadingWidget', ['_START_REQUEST_', '_END_REQUEST_', function (_START_REQUEST_, _END_REQUEST_) {
return {
restrict: "A",
link: function (scope, element) {
element.hide();
scope.$on(_START_REQUEST_, function () {element.show();});
scope.$on(_END_REQUEST_, function () {element.hide();});
}
};
}]);
See more details at codingsmackdown
2 Comments
Whisher
Finally I got it thanks I advice for noob like me this starting point endlessindirection.wordpress.com/2013/05/19/…
Adam Plocher
"Deprecated"... as in we shouldn't use this method?
I had the same question as you.
I find this nice tutorial about it: http://brianhann.com/ui-grid-the-easiest-customization-youll-ever-write/
He use vm.loading = true while fetching data from server and changed to false after complete.
var app = angular.module('app', ['ngTouch', 'ui.grid']);
app.controller('MainCtrl', ['$http', '$timeout', function ($http, $timeout) {
var vm = this;
vm.reset = reset;
vm.noData = noData;
vm.gridOptions = {
columnDefs: [
{ field: 'name' },
{ field: 'age' }
]
};
reset();
////////////
// Initialize our data source
function init() {
$http.get('data.json')
.success(function (data) {
vm.gridOptions.data = data;
})
.finally(function () {
vm.loading = false;
});
}
// Reset the data source in a timeout so we can see the loading message
function reset() {
vm.loading = true;
vm.gridOptions.data = [];
$timeout(function () {
init();
}, 1000);
}
function noData() {
vm.gridOptions.data = [];
}
}]);
In the HTML, he uses ng-hide to show/hide the spinner based on values of gridOptions.data and vm.loading:
<div id="grid1" ui-grid="vm.gridOptions" class="grid">
<div class="grid-msg-overlay" ng-hide="!vm.loading">
<div class="msg">
<span>
Loading Data...
<i class="fa fa-spinner fa-spin"></i>
</span>
</div>
</div>
<div class="grid-msg-overlay" ng-hide="vm.loading || vm.gridOptions.data.length">
<div class="msg">
<span>No Data</span>
</div>
</div>
</div>
Here is the Plunker of the final version shown.
Comments
You have angularjs-spinner, see GitHub sources
3 Comments
Whisher
Thanks, sorry to bother you but may be there are a quick to use example for ng-grid :)
Maxim Shoustin
Why you want to use ng-grid? its strange
Whisher
I'm quite new at angular tools so I've though it'd be a good one but I need a loader ! :) so could you give me an hint on what is best to use for a grid + pagination + loader ?
I also needed a similar behavior and I came across this answer but I needed to show something inside the grid itself so here is something I put together. My idea is that I change the gridOptions on the fly and show a loader as a row inside the grid.
loaderOptions = {
"columnDefs": [{
"name": "",
"field": "loading",
"enableColumnMenu": false,
"cellTemplate": '<div style="width:90px; margin:auto;"><span class="glyphicon glyphicon-refresh glyphicon-refresh-animate"></span> Loading...</div>'
}],
"data": [{
"loading": ""
}]
};
1 Comment
MrYellow
Rather than re-defining the headers I went with using the middle column. ``` const fields = gridSetup.columnDefs.map(d => d.field); const middle = Math.ceil((fields.length - 1)/ 2); gridSetup.data = [{ [fields[middle]]: 'Loading...' }]; ```
The HTML code-sample
<img ng-show="loading" src="~/img/loding.jpg" />
<div class="ngtyle" ng-grid="myGridView"></div>
The AngularJs code-sample
var app = angular.module('App', ['ngGrid']);
app.controller('MainCtrl', function ( $scope, myService ) {
$scope.loading = true;
myService.get().then( function ( response ) {
$scope.items = response.data;
})
.finally(function() {
$scope.loading = false;
});
$scope.myGridView = {
data: 'dataList',
columnDefs: 'myDisplayColumns'};
});
Comments
Simply,by adding this code in your html part:
<img alt="loading..." src='images/ajax-loader.gif")' /> loading message...
and the following code in your app.controller script:
$http.get(yourdataUrl)
.then(function (response) {
$scope.records = response.data;
$("#loadingWidget").hide();
});
it works fine for me!
1 Comment
MrYellow
You have a data-binding framework. Why are you using jQuery to target elements by ID?