Update a DIV with a Partial View on Button Click (dynamic) - ajax

So I want to do something almost exactly like you find here:
http://www.makeitspendit.com/calling-asp-mvc-controllers-from-jquery-ajax/
It will do exactly what I want it to do, but having the same script written out for all 4 buttons is not very DRY. (Well, not DRY at all)
I would like to have one script to call the correct view based on the ID of the button, so that code would only have to be on my page once.
I tried passing this.id into the function call, and using concatenation in the "url:" property of the ajax call but that doesn't work.
EXAMPLE:
<div id="projectDiv">
<button onclick="loadProject(this.id)" id="_Project1">Project 1</button>
<button onclick="loadProject(this.id)" id="_Project2">Project 2</button>
<script>
function loadProject(projectID) {
$.ajax({
url: ("/Projects/Project/"+projectID),
datatype: "text",
type: "POST",
success: function (data) {
$('#projectDiv').html(data);
},
});
});
</script>
And in the controller:
[HttpPost]
public ActionResult Project(string id)
{
return View(id);
}
I've searched all over for this and found similar things (but not similar enough to derive what I need) but couldn't find this scenario -- which I would've assumed was common enough to have more information.
The example code illustrates how I would LIKE it to work, but I can't seem to pass the variable into the url property like that. While I am admittedly pretty new to ASP.NET MVC, this seems like it should be pretty basic and yet I've been stuck on this for a minute.

I realize this post is over a year old at this point, but I wanted to add a more complete answer based off the comments made on the original question, in case others like me stumble across it.
In my /Views/Shared/ folder I have _YourPartialName.cshtml
In my HomeController.cs I have:
[HttpPost]
public PartialViewResult AddPartialToView(string id)
{
return PartialView(id);
}
In my MainView.cshtml I have:
...
<div id="placeHolderDiv">
</div>
<div class="form-group">
<button class="btn" type="button" onclick="replaceContentsOfDiv(this.id)" id="_YourPartialName">Add A Partial View Above This</button>
</div>
...
<script>
function replaceContentsOfDiv(partialViewToInsert) {
$.ajax({
url: '#Url.Action("AddPartialToView", "Home")',
data: { id: partialViewToInsert},
type: "POST",
success: function(data) {
$('#placeHolderDiv').html(data);
}
});
}
</script>
This will result in:
<div id="placeHolderDiv">
<whatever class="you had in your partial">
</whatever>
</div>
Hope this helps.

Related

AJAX shows different behaviors in an if/elseif-statement which is inside the success function [duplicate]

I have looked through all the similar posts out there but nothing seems to help. This is what I have
HTML:
<section>
<form id="contact-form" action="" method="post">
<fieldset>
<input id="name" name="name" placeholder="Name" type="text" />
<input id="email" name="email" placeholder="Email" type="text" />
<textarea id="comments" name="comments" placeholder="Message"></textarea>
<div class="12u">
Send Message
Clear Form
</div>
<ul id="response"></ul>
</fieldset>
</form>
</section>
JavaScript/jQuery:
function sendForm() {
var name = $('input#name').val();
var email = $('input#email').val();
var comments = $('textarea#comments').val();
var formData = 'name=' + name + '&email=' + email + '&comments=' + comments;
$.ajax({
type: 'post',
url: 'js/sendEmail.php',
data: formData,
success: function(results) {
$('ul#response').html(results);
}
}); // end ajax
}
What I am unable to do is prevent the page refresh when the #form-button-submit is pressed. I tried return false; I tried preventDefault() and every combination including return false; inside the onClick. I also tried using input type="button" and type="submit" instead and same result. I can't solve this and it is driving be nuts. If at all possible I would rather use the hyperlink due to some design things.
I would really appreciate your help on this.
Modify the function like this:
function sendForm(e){
e.preventDefault();
}
And as comment mentions, pass the event:
onclick = sendForm(event);
Update 2:
$('#form-button-submit').on('click', function(e){
e.preventDefault();
var name = $('input#name').val(),
email = $('input#email').val(),
comments = $('textarea#comments').val(),
formData = 'name=' + name + '&email=' + email + '&comments=' + comments;
$.ajax({
type: 'post',
url: 'js/sendEmail.php',
data: formData,
success: function(results) {
$('ul#response').html(results);
}
});
});
function sendForm(){
// all your code
return false;
}
I was also bit engaged in finding solution to this problem, and so far the best working method I found was this-
Try using XHR to send request to any url, instead of $.ajax()...I know it sounds bit weird but try it out!
Example-
<form method="POST" enctype="multipart/form-data" id="test-form">
var testForm = document.getElementById('test-form');
testForm.onsubmit = function(event) {
event.preventDefault();
var request = new XMLHttpRequest();
// POST to any url
request.open('POST', some_url, false);
var formData = new FormData(document.getElementById('test-form'));
request.send(formData);
This would send your data successfully ...without page reload.
Have you tried using
function sendForm(event){
event.preventDefault();
}
Simple and Complete working code
<script>
$(document).ready(function() {
$("#contact-form").submit(function() {
$("#loading").show().fadeIn('slow');
$("#response").hide().fadeOut('slow');
var frm = $('#contact-form');
$.ajax({
type: frm.attr('method'),
url: 'url.php',
data: frm.serialize(),
success: function (data) {
$('#response').html(data);
$("#loading").hide().fadeOut('slow');
$("#response").slideDown();
}, error: function(jqXHR, textStatus, errorThrown){
console.log(" The following error occured: "+ textStatus, errorThrown );
} });
return false;
});
});
</script>
#loading could be an image or something to be shown when the form is processing, to use the code simply create a form with ID contact-form
Another way to avoid the form from being submitted is to place the button outside of the form. I had existing code that was working and created a new page based on the working code and wrote the html like this:
<form id="getPatientsForm">
Enter URL for patient server
<br/><br/>
<input name="forwardToUrl" type="hidden" value="/WEB-INF/jsp/patient/patientList.jsp" />
<input name="patientRootUrl" size="100"></input>
<br/><br/>
<button onclick="javascript:postGetPatientsForm();">Connect to Server</button>
</form>
This form cause the undesirable redirect described above. Changing the html to what is shown below fixed the problem.
<form id="getPatientsForm">
Enter URL for patient server
<br/><br/>
<input name="forwardToUrl" type="hidden" value="/WEB-INF/jsp/patient/patientList.jsp" />
<input name="patientRootUrl" size="100"></input>
<br/><br/>
</form>
<button onclick="javascript:postGetPatientsForm();">Connect to Server</button>
I expect anyone to understand my idea very well as it's a very simple idea.
give your required form itself an id or you can get it by any other way you prefer.
in the form input "submit" call an onclick method from your javascript file.
in this method make a variable refer to your from id the addEventListener on it and make a preventDefault method on "submit" not on "click".
To clarify that see this:
// element refers to the form DOM after you got it in a variable called element for example:
element.addEventListener('submit', (e) => {
e.preventDefault();
// rest of your code goes here
});
The idea in brief is to deal with the form by submit event after dealing with submit button by click event.
Whatever is your needs inside this method, it will work now without refresh :)
Just be sure to deal with ajax in the right way and you will be done.
Of course it will work only with forms.
The way I approached this: I removed the entire form tag and placed all the form elements such as input, textarea tags inside a div and used one button to call a javascript function. Like this:
<div id="myform">
<textarea name="textarea" class="form-control">Hello World</textarea>
<button type="submit" class="btn btn-primary"
onclick="javascript:sendRequest()">Save
changes</button>
<div>
Javascript:
function sendRequest() {
$.ajax({
type: "POST",
url: "/some/url/edit/",
data: {
data: $("#myform textarea").val()
},
success: function (data, status, jqXHR) {
console.log(data);
if (data == 'success') {
$(`#mymodal`).modal('hide');
}
}
});
return true;
}
I thought why use a form when we are sending the actual request using AJAX. This approach may need extra effort to do things like resetting the form elements but it works for me.
Note:
The above answers are more elegant than this but my use case was a little different. My webpage had many forms and I didn't think registering event listeners to every submit button was a good way to go. So, I made each submit button call the sendRequest() function.

CORE 2 MVC Ajax redirect to display a view

I have an application that uses the jQuery Datatable and I want to click on a row, pick up the id, and then bring up a view that allows for editing of that view and updating the underlying database.
Ajax gets me to the controller-action that for the edit view but I can't get the view itself to display. Instead, the controller action just returns to ajax. I've tried numerous tactics with no joy. Here is a simple example based upon a standard CORE template:
#section scripts{
<script>
$(document).on('click', 'button.number', function () {
alert($(this).val());
$.ajax({
method: 'GET',
url: '#Url.Action("About", "Home")'
});
});
</script>
}
<h3>Home Page</h3>
<div>
<button href="#" type="button" class="number" id="one" value="1">1</button>
<button href="#" type="button" class="number" id="two" value="2">2</button>
</div>
Running the debugger shows that About action is called OK but the view isn't rendered - it just returns to ajax. I've tried all sorts of redirection but any "return" just goes back to ajax.
Is there away around this or perhaps a better way to get from the JS to the controller-action? Thanks
EDIT:
Batuhan gets the credit for his solution but I'm re-posting it to clean up a little syntax and add the parameter passing that was my initial goal.
$(document).on('click', 'button.number', function () {
var id = $(this).val();
alert(id);
$.ajax
({
method: 'GET',
url: '#Url.Action("About", "Home")',
}).success(function (result) {
window.location.href = '/home/about/' + id;
});
});
And here is Home Controller for the About Action:
public IActionResult About(int id)
{
string parm2 = id.ToString();
ViewBag.msg = parm2;
return View();
}
And the About page:
#{
ViewData["Title"] = "About";
}
<p>
<h1> #ViewBag.msg </h1>
</p>
All works as initially hoped for!
$(document).on('click', 'button.number', function () {
alert($(this).val());
$.ajax({
method: 'GET',
url: '#Url.Action("About", "Home")'
}).success: function(result){
///this line
window.href='redirect url';
}});;
});
this is a solution cause you cant redirect from ajax call. it returns The view in html form So if you want to postback you needto use window.href="url";

Use Form to send Email in Spring Boot using Thymeleaf

I want to implement a send mail form using Thymeleaf.
I have a page called start_page.html that contains this form :
<div class="w3-container w3-padding-64" id="contact">
<h1>Contact</h1><br>
<p>We offer full-service catering for any event, large or small. We understand your needs and we will cater the food to satisfy the biggerst criteria of them all, both look and taste. Do not hesitate to contact us.</p>
<p class="w3-text-blue-grey w3-large"><b>Catering Service, 42nd Living St, 43043 New York, NY</b></p>
<p>You can also contact us by phone 00553123-2323 or email catering#catering.com, or you can send us a message here:</p>
<form th:action="#{~/homePage/contact}" th:object="${contactMail}" method="post" target="_blank">
<p><input class="w3-input w3-padding-16" type="text" th:field="*{nom}" th:placeholder="#{homePage.nom}" required name="nom"></p>
<p><input class="w3-input w3-padding-16" type="text" th:field="*{prenom}" th:placeholder="#{homePage.prenom}" required name="prenom"></p>
<p><textarea class="w3-input w3-padding-16" type="text" th:field="*{message}" style="height: 250px;" th:placeholder="#{homePage.message}" required name="message"></textarea>
<p><button class="w3-button w3-light-grey w3-section" type="submit">[[#{homePage.envoyer}]]</button></p>
</form>
</div>
I have already implemented a controller for this form action
#Controller
#PropertySource(ignoreResourceNotFound = true , value = "classpath:messages.properties")
public class HomePageController {
#Autowired
private MailContactService mailService;
#RequestMapping(value = "/homePage/contact", method = RequestMethod.POST)
public String sendMessage(ContactMail contactMail){
mailService.sendContactMail(contactMail);
System.out.println("done");
return "/home/start_page";
}
}
I'm not getting the desired behavior: I though that my page will stay the same but my page is reloading.
I want to order the controller to do something without getting out of my page.
I googled and I found that I can send a service object to my page but I want to avoid this option if there is other solutions .
Thank you.
You'll need to use an AJAX call if you don't want to refresh your page.
What this means is that you want to intercept the default HTTP form post behavior (that will do a full page refresh) using javascript.
For this you need to :
Remove the action tag on your form (let javascript handle it when clicking the button to submit the form)
Add this to your page (will be executed when the form is submitted :
$(document).ready(function () {
$("#contact-form").submit(function (event) {
// do not post the form and trigger full page refresh
event.preventDefault();
var formData = .. // construct some formData
$.ajax({
type: "POST",
contentType: "application/json",
url: "/homePage/contact",
data: JSON.stringify(formData),
dataType: "json",
success: function (data) {
console.log("SUCCESS : ", data);
},
error: function (e) {
console.log("ERROR : ", e);
}
});
});
});
For a full example, as always, mkyong.com has got you covered :)

Ajax UpdateTargedId / Browser doesn't refresh ASP MVC Partial View

I Have HTML Page "Index.cshtml"
<div class="container" >
<div class="row">
<div class="col-md-6" id="employeeList">
#Html.Partial("IndexPartial");
</div>
<div id="second">
other div
</div>
<button onclick="Increase()">increase</button>
</div>
</div>
partial view which contains employee table, button which clicked calls JS Script which executes controller method increasing employee age
<script>
function Increase(id) {
$.ajax({
url: 'Main/Increase',
data: { id: 5 },
UpdateTargetId:"employeeList",
success: function () {
alert('Added');
}
});
}
</script>
I ran firebug and it shows that each button click returns html response with updated employee Table (employee age is updated) but in browser there are still old values until I manually refresh page
You seem a bit confused. Let's go over a few things.
Partial is a built-in method that renders a view to a string (an IHtmlString). This runs once when the page is being constructed.
$.ajax() is a jQuery function. This function (as far as I can recall) does not accept a property called UpdateTargetId. I think you've confused that with the .NET AjaxOptions class which does accept an option called UpdateTargetId.
One way to quickly get things working is to change your success function to take a data argument and then insert the HTML into the div.
success: function (data, textStatus, xhr) { }

JQuery AJAX Post to Controller data incorrect

Here is what I am trying to do:
My goal is to display a list of Trending Opinions (A custom Model) from the page's model when the page loads. If a user clicks the "Show more Trending Opinions" button, it uses ajax to call a method on a controller that will then retrieve an additional number of items, come back to the page and display them. Then it adds say 20 more. Then they can repeat the process and click it again, etc.
Exactly the same as a normal site does when you click "Show More" on a list of items.
If the way I am approaching this is incorrect and you know of any tutorial (or just out of your head) showing the correct way to do this in MVC 4, please let me know. I am not dead-set on the way I am doing it at the moment, this is just the "correctest" way I have found.
I followed the answer to a similar question: How to Update List<Model> with jQuery in MVC 4
However, the data coming through to my controller is incorrect and I can't figure out what the issue is.
Let me put as much info as I can, because I have no idea where the error may be.
Model for page (OpinionModel has a few public properties):
public class IndexModel
{
public IList<OpinionModel> TopTrendingOpinions { get; set; }
}
The View:
<div id="TrendingOpinions">
<p>What is trending at the moment</p>
#using (Html.BeginForm("LoadMoreTrendingOpinions", "AjaxHelper",
method: FormMethod.Post,
htmlAttributes: new { #class = "form-horizontal", id = "LoadTrendingOpinionsForm" }))
{
#Html.EditorFor(x => x.TopTrendingOpinions)
<input type="submit" value="Load More Trending Opinions" />
}
<script type="text/javascript">
$('#LoadTrendingOpinionsForm').submit(function () {
$.ajax({
url: this.action,
type: this.method,
data: {
topTrendingOpinions: $(this).serialize()
},
success: function (result) {
alert(result);
}
});
return false;
});
</script>
</div>
**There is also an EditorTemplate for my model.
The Controller:**
[HttpPost]
public ActionResult LoadMoreTrendingOpinions(IList<MyGoldOpinionMVC.Models.OpinionModel> topTrendingOpinions)
{
var dataHelper = new Data.DataHelper();
var moreTrendingOpinions = dataHelper.LoadMoreTrendingOpinions(topTrendingOpinions.LastOrDefault().Id);
// var partialView = PartialView("../PartialViews/_ListOfPostedOpinion", moreTrendingOpinions);
return View(moreTrendingOpinions);
}
So here is the order of events:
When running the site, the form shows a list of OpinionModels (Using the Editor Template displaying correct data). When I click the SUBMIT button, it goes to the controller (I have a breakpoint) and the data for the "topTrendingOpinions" parameter is a List with one item in it, but that item is null. So in other words, it is not passing through the list that is clearly being used to populate the form.
The only way I have been able to get a list to post back to the controller is to build it manually with jquery. my understanding is this.serialize on a form click is going to try to serialize the whole from which would get very ugly. How I would do this is
<input type="button" class="btnMore" value="Load More Trending Opinions" />
$('.btnMore').on('click', function () {
$.ajax({
url: '#Url.Action("LoadMoreTrendingOpinions", "AjaxHelper")',
type: 'post',
contentType: 'application/json; charset=utf-8',
data: {
Id: '#ViewBag.Id'
},
success: function (result) {
//add results to your table
}
});
});
and set the id of the last record sent through the view bag on your controller so you have a reference to go off of for pulling the next chunk. Let me know if you have any questions
When posting lists you have to be really careful that your inputs are named correctly. If they are not, the default model binder fails to parse them into classes when posted resulting the object being null in the controller.
In your case you are posting a list of models inside a model, but not the whole model. I'd use PartialView instead of editortemplate, just to make working with field names easier. In my example we are posting a list of FooModels contained in IndexModel
Model
public class FooModel
{
public string Foo { get; set; }
public string Bar { get; set; }
}
public class IndexModel
{
public IList<FooModel> Foos { get; set; }
}
View
#using (Html.BeginForm("LoadMoreTrendingOpinions","AjaxHelper",
method: FormMethod.Post,
htmlAttributes: new { #class = "form-horizontal", id = "LoadTrendingOpinionsForm" }))
{
#Html.Partial("FooModelsPartial", Model.Foos)
<input type="submit" value="Load More Trending Opinions" />
}
FooModelsPartial
#model IList<FooModel>
#for (int i = 0; i < Model.Count(); i++)
{
#Html.EditorFor(model => model[i].Foo)
#Html.EditorFor(model => model[i].Bar)
}
Notice how we are using for instead of foreach loop. This is because editors in foreach loop are not named correctly. In this case we want our fields to be [0].Foo, [0].Bar, [1].Foo, [1]. Bar etc.
Controller:
[HttpPost]
public ActionResult LoadMoreTrendingOpinions(IList<FooModel> topTrendingOpinions)
{
// do something with toptrending thingy
var model = new IndexModel();
model.Foos = topTrendingOpinions;
return View("Index", model);
}
Now the real question in my opinion is do you really want to post the whole list of models to get bunch of new ones related to one of them? Wouldn't it be more convenient to post the id of opinion you'd want to read more of, returning partialview containing the requested more trending opinions and appending that to some element in the view with jquery?
Html:
#using (Html.BeginForm("LoadMoreTrendingOpinions","AjaxHelper",
method: FormMethod.Post,
htmlAttributes: new { #class = "form-horizontal", id = "LoadTrendingOpinionsForm" }))
{
<div id="more">#Html.Partial("FooModelsPartial", Model.Foos)</div>
<input type="submit" value="Load More Trending Opinions" />
}
Javascript:
$('#LoadTrendingOpinionsForm').submit(function () {
$.ajax({
url: this.action,
type: this.method,
data: {
id: 1 /* The id of trending item you want to read more of */
},
success: function (result) {
$("#more").html(result)
}
});
return false;
});
Controller:
[HttpPost]
public ActionResult LoadMoreTrendingOpinions(int id)
{
var moreTrendingOpinions = dataHelper.LoadMoreTrendingOpinions(id);
return PartialView("FooModelsPartial", moreTrendingOpinions);
}

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