I would like getting the value of two textarea from WYMeditor:
The first one:
<script type="text/javascript">
jQuery(function() {
$(" .wymeditor").wymeditor({
logoHtml: '',
lang: 'fr',
skin: 'default',
});
});
</script>
And the second one:
<script type="text/javascript">
jQuery(function() {
$(" .wymeditor_ref").wymeditor({
logoHtml: '',
lang: 'fr',
skin: 'silver',
});
});
</script>
HTML:
<textarea id="definition" class="wymeditor" name="definition"/></textarea>
<textarea id="references_definitions" class="wymeditor_ref" name="definition"/></textarea>
I'm using this: WYMeditor.INSTANCES[0].html();
But, the problem is I don't know how to do if there are two textarea. How getting the second value?
Thanks a lot!!
Get specific WYMeditor instance HTML with known ordering
If you simply want to iterate through the results of all the WYMeditor instances on a particular page, your array index method is just fine. If you know the order in which the WYMeditor instances are created, you'll do something like:
var wymResults,
wymRefResults;
wymResults = WYMeditor.INSTANCES[0].xhtml();
wymRefResults = WYMeditor.INSTANCES[1].xhtml();
Get HTML from all WYMeditor instances
If you have an unknown number of instances of WYMeditor, this is how you might get the results of all of them:
var results = [],
i;
for (i = 0; i < WYMeditor.INSTANCES.length; i++) {
// Do something with the xhtml results
results.push(WYMeditorINSTANCES[i].xhtml());
}
Get specific HTML results with unknown instantiation order
If it matters which WYMeditor instance you'd like to retrieve though, which is often the case, you'll want to store references to the specific instances when you create them. eg.
var wym,
wymRef,
wymResults,
wymRefResults;
// Instantiate my WYMeditor instances
wym = $(".wymeditor").wymeditor();
wymRef = $(".wymeditor_ref").wymeditor();
// Let's grab the results. This will probably live in some kind of `submit()` handler.
wymResults = wym.xhtml();
wymRefResults = wymRef.xhtml();
Use xhtml(), not html()
Another note specific to your example, but you should be using the xhtml() call instead of the html() call to ensure consistent, cross-browser markup.
The html() call doesn't run the resulting HTML through the parser or do any browser-specific cleanup, which means that if you were to load some html in lets say IE9 that was created in Chrome, just calling html() without making any changes will mean the resulting HTML will be slightly different. Different browsers need HTML that is slightly different to provide a consistent editing experience, and WYMeditor abstracts this away for you, assuming you use xhtml() to get the results.
Related
I'm trying to use ajax with thymeleaf. I designed a simple html page with two input field. I would like to use addEventHandler for the value of first input text, then I want to send it to controller and make calculation, after that I need to write it in same html form in the second field which returns from controller.
For example:
first input text value -> controller (make calculation) -> (write value) in second input text.
My html page is
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<link rel='stylesheet prefetch' href='http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css'>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<input type="text" name="Thing" value=""/>
<script th:inline="javascript">
window.onload = function () {
/* event listener */
document.getElementsByName("Thing")[0].addEventListener('change', doThing);
/* function */
function doThing() {
var url = '#{/testurl}';
$("#fill").load(url);
alert('Horray! Someone wrote "' + this.value + '"!');
}
}
</script>
<!-- Results block -->
<div id="fill">
<p th:text="${responseMsg}"/></div>
</div>
</body>
</html>
My controller
#RequestMapping(value = "/testurl", method = RequestMethod.GET)
public String test(Model model) {
model.addAttribute("responseMsg","calcualted value")
return "test";
}
However I cannot call controller from ajax. Could you help me?
There are a few issues with your code. First of all, it looks like you're using the same template for both the initial loading of the application, and returning the calculated result.
You should split these two into different calls if you're using AJAX, since one of the goals of AJAX is that you don't need to reload an entire page for one change.
If you need to return a simple value, you should use a separate request method like this:
#GetMapping("/calculation")
#ResponseBody
public int multiply(#RequestParam int input) {
return input * 2; // The calculation
}
What's important to notice here is that I'm using #ResponseBody and that I'm sending the input to this method as a #RequestParam.
Since you will be returning the calculated value directly, you don't need the Model, nor the responseMsg. So you can remove that from your original request mapping.
You can also remove it from your <div id="fill">, since the goal of your code is to use AJAX to fill this element and not to use Thymeleaf. So you can just have an empty element:
<div id="fill">
</div>
Now, there are also a few issues with your Thymeleaf page. As far as I know, '#{/testurl}' is not the valid syntax for providing URLs. The proper syntax would be to use square brackets:
var url = [[#{/calculation}]];
You also have to make sure you change the url to point to the new request mapping. Additionally, this doesn't look as beautiful since it isn't valid JavaScript, the alternative way to write this is:
var url = /*[[ #{/calculation} ]]*/ null;
Now, your script has also a few issues. Since you're using $().load() you must make sure that you have jQuery loaded somewhere (this looks like jQuery syntax so I'm assuming you want to use jQuery).
You also have to send your input parameter somehow. To do that, you can use the event object that will be passed to the doThing() function, for example:
function doThing(evt) {
var url = [[#{/calculation}]];
$("#fill").load(url + '?input=' + evt.target.value);
alert('Horray! Someone wrote "' + this.value + '"!');
}
As you can see, I'm also adding the ?input=, which will allow you to send the passed value to the AJAX call.
Finally, using $().load() isn't the best way to work with AJAX calls unless you try to load partial HTML templates asynchronously. If you just want to load a value, you could use the following code in stead:
$.get({
url: /*[[ #{/calculation} ]]*/ null,
data: { input: evt.target.value }
}).then(function(result) {
$('#fill').text(result);
});
Be aware that $.get() can be cached by browsers (the same applies to $().load() though). So if the same input parameter can lead to different results, you want to use different HTTP methods (POST for example).
I am trying to pass the contents of a bean to javascript so that I can parse it and create a JSON object... (Yes I am still on ATG 9.1). However I am having trouble getting from serverside to client side.... I am new with this stuff and would appreciate any explanation as documentation on this is scarce and not helpful.
<dsp:tomap var="cartMap" bean="MyShoppingCartModifier.order" recursive="true"/>
<script>
var myCartMap = "${cartMap}";
//Logic (easy)
</script>
Doing this generates an "Uncaught SyntaxError: Unexpected token ILLEGAL" on my browser (Chrome)
Any wisdom will greatly help me in my quest in learning this stuff.
The problem is your usage of the tomap tag. You can't just pass in an entire tomap'd object because the tomap tag isn't going to create a nice, parsable json object.
You should either:
1) Format the json yourself right within your tags. Choose only the values that you want from the order.
<script>
var myCart = {
total : '<dsp:valueof bean="MyShoppingCartModifier.order.priceInfo.total">'
...
}
// Then use myCart for something here
</script>
or 2) There's a little known JSP to JSON library found here, http://json-taglib.sourceforge.net, that is very useful. To use that, you'd create a separate page, something like orderJSON.jspf, that is used to generate a pure json object from your order. Then in the page that you require this js, you can do:
<script>
var myCart = <%# include file="/path/to/orderJSON.jspf" %>
// Then use myCart for something here.
</script>
I am currently trying to build a little widget that will retrieve a list of artists based on a username.
The Ruby method requires a username parameter after which an API call is made that retrieves the actual array of strings.
The web page has an input field where the user can fill out his/her username. My goal is to immediately call the ruby method and display the list of artists. My problem is being able to use the actual form input as the parameter. I figured this would be relatively easy with params[:user], in the same way it's done in a Sinatra post method. Alas, turns out it isn't.
I tried both a JS approach and directly calling the method after :onkeyup.
Javascript:
userChanged = function() {
var user = document.getElementById("username");
if (user.value.length != 0){
artists = #{RFCore::get_artists(:name => params[:user]).to_json};
art_list.innerHTML = artists
};
};
:onkeyup
:onkeyup => "art_list.innerHTML = #{RFCore::get_artists(:name => params[:user])[0]}"
I have substituted params[:user] with all variations I could think of such as "#{user}" and user.
The errors returned are undefined method []' for params[:user] and undefined local variable or methoduser' for "#{user}" and user.
Perhaps there is an easy solution to this; but the feeling is starting to creep up on me my approach is wrong to begin with. I am open to any other way of achieving this.
As far as I understood, you are generating that JavaScript dynamically. So when your Ruby code produces it, it evaluates that RFCore::get_artists expression when you are generating the JavaScript code, not when the user interacts with the web page.
If that's the case, I recommend:
Use jQuery. It makes your life much easier.
When there's some user interaction (e.g., a key press), use Ajax to communicate with your server to get back a list of artists.
Here is a small Sinatra application that demonstrates this approach:
require 'sinatra'
get '/' do
<<html
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
function userChanged()
{
$.get('/get-artists',
{username: $('#username').val()},
function(data){
$('#artists').html(data);
});
}
</script>
User: <input id="username" type="text">
<button onclick="userChanged();">Look up</button>
<div id="artists"/>
html
end
get '/get-artists' do
"Generate here list for user #{params[:username]}"
end
Please notice that the above code is just an example. The HTML generated is all wrong, no template language is being used, etc.
I know one can use this function
#Url.Action("MyInfo", "Home")
to avoid the hardcoding of urls, but my $.ajax calls are in a separate .js file. Would the above still work?
From my knowledge, the #Url.Action will only work inside the Razor file. But considering that we are advised to use non-obtrusive JS, I am not quite sure how I would use the #Url.Action.
Please advise.
Would the above still work?
No.
From my knowledge, the #Url.Action will only work inside the Razor file
Your knowledge is correct.
But considering that we are advised to use non-obtrusive JS, I am not
quite sure how I would use the #Url.Action.
You could use HTML5 data-* attributes on some DOM element that you are unobtrusively enhancing (unless this element is already a <form> or an anchor in which case it already contains an url):
<div id="foo" data-url="#Url.Action("foo")">Hello</div>
and then in your separate javascript file:
$(function() {
$('#foo').click(function() {
var url = $(this).data('url');
// TODO: do something with the url
});
});
Add a function parameter for the relative paths. E.g., in your View:
<script type="text/javascript">
var path = "#Url.Action("ActionName", "ControllerName")";
someAjaxMethod(path)
</script>
and in your external js file:
function someAjaxMethod(path)
{
var data = {};
$.ajax(path, data)
}
So I have my first MVC2 site that I'm working on and naturally I'd like to throw some AJAX in there. The problem is, is that I don't know how to get the URL for the action when passing in a URL parameter. Let me explain. The examples I've seen so far show the developer passing in strings like '/MyController/MyAction'. That's great, except if your controllers are not in the root directory of your website (as is the case in my situation). I could always use relative URLs like 'MyAction' except if the URL contains parameters that doesn't work either. Consider http://example.com/myroot/MyController/MyAction vs http://example.com/myroot/MyController/MyAction/PageNumber/SomeOtherValue. Now the relative URL will be incorrect.
In the ASPX code, this is easy. I just write in <%= Url.Action("MyAction") %>. But how do I do this in my javascript file?
This is part of the long-standing issue that including server-sided code in JavaScript files is not really possible :(. (Without serious hacks, that is.)
The best solution is to include the action URL inside your HTML file somewhere, then get that value from JavaScript. My suggestion would be something like this:
<!-- in your view file -->
<form id="MyForm" action="<%: Url.Action("MyAction") %>"> ... </form>
<!-- or -->
<a id="MyLink" href="<%: Url.Action("MyAction") %>"> ... </a>
combined with
// In your .js file
$("#MyForm").submit(function ()
{
$.post($(this).attr("action"), data, function (result) { /* ... */ });
return false;
});
// or
$("#MyLink").click(function ()
{
$.getJSON($(this).attr("href"), data, function (result) { /* ... */ });
return false;
});
This feels semantically clear to me, and in some cases even creates degradable fallback behavior for when JavaScript is turned off.
You can't do this in your JavaScript file directly, however you can pass these dynamic values into your script by way of a script initializer. Consider the following example:
External Js file
ShoppingCart = function() {
this.settings = {
AddProductToCartUrl: '',
RemoveFromCartUrl: '',
EmptyCartUrl: '',
UpdateCartUrl: ''
};
};
ShoppingCart.prototype.init = function(settings) {
this.settings = jQuery.extend(this.settings, settings || {});
};
HTML/View
<script type="text/javascript">
var cart = new ShoppingCart();
cart.init({ AddProductToCartUrl: '<%=Url.Action("MyAction")%>' });
alert(cart.settings.AddProductToCartUrl);
</script>
Simple: tell your javascript what the correct URL is.
Tactically, you can get there alot of ways, but they basically break down into two techniques:
Have a server-side generated javascript "configuration" so you can do something like var url = siteConfiguration.SITEROOT + 'products/pink-bunny-slippers' Note this file can be a normal MVC view, the only trick is you have to tell the controller to send a text/javascript header rather than text/html.
Basically, dependency inject it into your script. IE function wireUpAjaxLinksToService(linkIdentifier, serviceEndpoint) where you call using something like wireUpAjaxLinks('a.ajax', '<%= Url.Action("MyService", "Services") %>')