I have a page that has a "prev" and "next" day button, and rather than reload the entire page, I simply do an ajax call to a controller that returns the entire partial view, which I replace the div with.
$("#divId").html(ajaxResponse);
Pretty simple.
However, I'm finding that this partial view is vastly more data than I need (html doesn't change at all, just the data) and it's causing slowness on mobile browsers.
My question is, is there a tool out there that will let me return a JSON representation of the model data and refresh all the values on the page automatically?
For example, say I have:
#Html.InputFor(x => x.FirstName)
and the JSON returns
{ FirstName: 'Henry', LastName: 'McLeery' }
Is there a library available that can automate the process of doing:
$("#FirstName").val(ajaxResponse.FirstName);
$("#LastName").val(ajaxResponse.LastName);
etc...
?
Take a look at Angular.js. Angular is a JavaScript framework which uses the mvc pattern.
After binding UI elements to your model the displayed data changes automatically when updating your model. Angular offers a nice api to consume ajax requests with json data.
Look at this:
Get and update json using angular.js
Related
I'm developing a ASP.NET Core web application where I'm using DataAnnotations to decorate my view model with validation attributes. When I open a detail page with my inputs, I see that Core added the HTML5 validation attributes to the rendered HTML (i.e. data-val="true").
However, I wrote custom client-side code when the user clicks on the Save button like this:
$(document).on("click", "#SaveAsset", function (event) {
event.preventDefault();
Asset.Save();
});
I also have a Save function defined like this:
window.Asset.Save = function () {
var postData = {
'Id': $("#Id").val(),
'SerialNumber': $("#SerialNumber").val(),
'PartNumber': $("#PartNumber").val(),
'assetTypeId': $("#AssetTypeId").val()
};
$.post('/Asset/SaveAsset', postData);
}
I need to validate on the client side first before calling $.post but I'm confused about how to do it. Microsoft shows that the unobtrusive javascript works automatically when you use it with forms. But I'm not using the HTML form element to submit my page. So how can I trigger the HTML5 validation attributes?
I added the links to jquery.validate.js and jquery.validate.unobtrusive.js. Right now, if I click the Save button the data is sent to the server and the controller checks the ModelState. But it shouldn't even be sending anything to the server. The client should stop the validation.
Should I even stop doing it this way? For example, creating my postData JSON object by getting the val() of each input.
Should I use the form element? I stopped using it because my page has hundreds of inputs so I was worried I would have problems. This way, I have control over each input.
Use a javascript solution like jQuery Validation Plugin to validate data before sending to the server. Otherwise, send the data to the server, and return a the errors with a bad request if validation fails.
Eg.
Return BadRequest(string[]{"Name is required", "Id must me a number"});
then capture the errors and shoe to the user
I'm writing an app in Swift 3.0 and I'm trying to scrape data from the search results of a webpage. I perform the search by including the search query as a parameter in the url, but the html that's getting returned to me has no results. I believe this is because the ajax on the webpage has not finished and populated the html with the search results by the time the html is returned to my app.
Question
How do I wait for the search results to load before getting the html?
EDIT:
URL: https://uscdirectory.usc.edu/web/directory/faculty-staff/#basic=a
This url performs a search on the USC directory for the character 'a'. The html in my browser on my MacBook includes these tags:
<tbody>(Search results are here)</tbody>
but in my app the html that is returned to me has nothing:
<tbody></tbody>
This is because the webpage initially has no search results, and then some time later the ajax finishes and the table body is populated. How do I use a URLSessionDataTask object in Swift to wait until the ajax finishes and ONLY THEN give me the html, such that I actually get the search results?
The workaround solution that I devised is unpleasant but functional. I created a WKWebView off screen and loaded the webpage I was interested in. I used a Timer to wait some arbitrary number of seconds for the javascript on the page to finish and then I retrieved the html from the webview
You can use property ajaxComplete() to fix this.
Ex:
$(document).ajaxComplete(function(){
//your code to render HTML
});
It will render your HTML only when ajax request is complete.
I have a query regarding the data rendering of the different page at one place. As every page is build using many components and all the components data gets stored under jcr location of page ie. /jcr:content/par/{components list}. The data is properly rendering on this page.
Now I have a situation where I need to create a component to search the page(i.e unique product), if this product page is available in the repository, I need to render its data just under the search box. For this I am creating json which I will use to render the content after search found.
But if there is any other way i can include this component from the /par location of the page to just display the data as it is, rather than building json(of all the components data) and then reading it at the time of display.
I am wondering if we have any method to display all the components data by just including the /par/{components} on a page. This way I can speed up the development, and it looks faster way to display the content as well.
thanks in advance....
If you have static page, then you can go through list of search results (product resources) and include component, which renders product, for each of them. Like:
<c:forEach items="${productsList}" var="productPath">
<cq:include path="${productPath}" resourceType="/apps/you-project/components/product-component-name"/>
</c:forEach>
If you show results dynamically - then you can do ajax requests for product resources. Something like this:
var productHtml = CQ.shared.HTTP.get(productPath + ".html");
Or the same using JQuery. Then you can add html to your page.
However, with second approach you should add clientlibs from component /apps/you-project/components/product-component-name to search results page yourself, because they will not be loaded with ajax request.
I'm working with restangular ngroute and playframework and I'm trying to do my CRUD following this tutorial : http://plnkr.co/edit/d6yDka?p=info
the list.html and detail.html in the index page (in the tutorial), I have them all in customer.scala.html page which call the main page by using this : #main("MyApp") So all my controllers and models are defined in this main page.
So how can I do the routing, the way that when I click on a button I can call the link (localhost:9000/custd) definded here in my js page:
app.config(function($routeProvider, RestangularProvider) {
$routeProvider.
when('/custd', {
controller:ListCtrl,
templateUrl:'list.html'
}).
UPDATE:
this is the link in customer.scala.html
<li>Customers</li>
in the file Application.scala I have this:
def custDetail = Action {
Ok(views.html.custDetail("Your new application is ready."))
}
in routes I have this:
GET / controllers.Application.index
GET /custdetail controllers.Application.custDetail
so how can I link this : /custd (in the angular controller) with my html page
So I think you're jumping in at the deep end a bit here. If you don't understand how to make a simple play web app, and you don't understand how to make a simple angular app then it might not be the best idea trying to integrate both straight away (I tried the same thing when I was new to this and it was complicated!).
Why have you chosen Angular for this given job? If you are not planning to create a single page application (which it sounds like you're not), then just using play templating should be sufficient for your needs (ands there's lots of docs available!).
If you are adamant on using the two, angular routing is geared towards angular applications. Looking at the routing you've provided:
app.config(function($routeProvider, RestangularProvider) {
$routeProvider.
when('/custd', {
controller:ListCtrl,
templateUrl:'list.html'
}).
In this you have provided a controller and a template. These are in reference to Angular controllers html templates, not Play. If you're not sure on how Angular controllers work, Angular has great documentation:
https://docs.angularjs.org
You need to work out exactly what information you need from the server side, create an endpoint to serve that data to your Angular app (using AJAX calls). I know this is a high level answer but really integrating the two is quite complex and hard to summarise in a single reply. My advice would be focus on creating an Angular OR Play app, then once you have the basics down move to integrating the two, but be clear as to the reasons behind chosing your technology as it sounds like you may not be
I just switched from Umbraco 4 to Umbraco 5 and it seems like a lot has changed.
So what i basically want is a possibility to add a alternative template to my document-types.
The fall back template shall return the content as JSON.
Why, you say? I want to create an API-like way of accessing the Umbraco data from my mobile devices.
WebAPI (http://cultiv.nl/blog/2012/4/22/exposing-umbraco-5-content-through-the-aspnet-web-api/)
I have thought about using WebAPI from asp.net MVC 4, but the project is really just a proof of concept and i don't want to code each endpoint.
So i found a som guys that did a package for Umbraco 4 that actually does this and renders the content of #currentPage as Json. The template is hit by adding "/JSON" to the end of the url. Unfortunetly this uses xslt, which ihas been removed from Ubraco 5.1 (Good thing).
So. I bet it's simple to create a partial, a macro or a partial macro that does this and add it to a template. But is just cant figure out where to start.
Any help with that? What I'm looking for is a step guide on what steps to take, to make the setup. Rendering the stuff ad json in C# i can handle.
It's the integration into Umbraci I lack.
Hoe u can help.
The alternative templating works exactly like in v4: Just add the name of the template at the end of the url: yoururl/json
Then add a new razor view to the templates named "json" with the following code:
#inherits RenderViewPage
#using System.Web.Mvc.Html;
#using Umbraco.Cms.Web;
#{
Layout = "";
}
{
#foreach (var attribute in Model.Attributes)
{
string.Format("\"{0}\": \"{1}\"", attribute.AttributeDefinition.Alias, attribute.DynamicValue);
}
}
This code can be used as a starting point without using the web api or own controllers.
Don't forget to allow the tempplate on all document types
hth,
Thomas