There are some messages coming from a Javascript file to a GSP page. How can I implement g:message in a Javascript page?
For example:
if ($('#name').val() == "") {
$('#nameStatus').show();
$('#nameStatus').html('<font color=red>Company Name can not be blank</font>');
return false;
Try this kind of syntax :
function foo() {
return "${message(code:'my.message.code')}";
}
If I understand correctly, you want to be able to use the output from g:message in your javascript.
There is a very helpful blog post which talks about how to use g:createLink in a similar way that you want, so you can easily adapt it to use g:message as well. Check out the post here, there is some useful info in the comments as well.
The idea is to create javascript objects in your GSP file; which should be defined before including your javascript file; and then just access those global objects in your js code.
Edit:
You might also be interested in the GSParse Plugin. I haven't tried it my self but I think it accomplishes what you are looking for as well.
Related
I am looking to call a JS function inside of a Razor function but I am unable to find the right syntax for it. I am not sure if I need to reorder my placement but I do not think it is necessary.
I have tried calling it as a new object and passing that into to the .Action() function but I could not get that to work. I am not super familiar with JS and if you could explain your answer that would be very appreciated!
#Html.Action("MonthlyPSAGauge", "Display", DropDownValue())
function DropDownValue() {
var value = $("#productionLine-dropdown").data("kendoDropDownList").value();
return { selectProductionLine: value };
}
I want to pass the DropDownValue() value into the MonthlyPSAGauge method in the Display Controller.
Unfortunately that will not work, C# is server side and JS (in this case) is client side. To make C# "call" a js function you could use something similar to this.
#Html.Raw(<script>DropDownValue();</style>);
Which would paste this into the html and would be run on the clients machine, I hope this helps!
I need to do something seemingly quite simple.
In the same way that I can, from my scala.html file, create a link to another url, /entry, I need to do that from a javascript file.
i.e., from the scala.html:
<div class="footer">
<a href='#routes.Application.index()'>Home</a>
</div>
from my javascript event:
function() myEvent {
window.location="#routes.Application.entry()"; // DOESN'T WORK!
}
For routing from javascript, I've already had to setup my javascript routes for some ajax work I've already had to do.
My ajax work was calling a method 'findPersons()' so in my Application.java file, I had already:
public Result jsRoutes()
{
response().setContentType("text/javascript");
return ok(Routes.javascriptRouter( "appRoutes",
routes.javascript.Application.findPersons()));
}
Because I want to be able to redirect to my GET entry() method, I modified it to look like this:
public Result jsRoutes()
{
response().setContentType("text/javascript");
return ok(Routes.javascriptRouter( "appRoutes",
routes.javascript.Application.findPersons(),
routes.javascript.Application.entry()));
}
Additionally I have these in my routes file:
GET /entry controllers.Application.entry()
POST /findPersons controllers.Application.findPersons()
When I am invoking my findPersons method, it is really nice and simple.
It looks like this:
appRoutes.controllers.Application.findPersons().ajax({
data: {
personIdentifier : personIdentifier,
surname : surname,
givenNames : givenNames
},
success : processDBQuery
});
For my simple redirect, I would like to be able to maintain the same loose coupling between my html/javascript code and the urls, as I can the ajax call above.
My redirect needs to occur on an event. Therefore, the easiest and quickest solution would have been simple to write:
function() myEvent {
window.location="/entry";
}
However, then I would be hard-coding the URL (which I have managed to avoid for my ajax call above), no longer maintaining that loose coupling I would so much like to have.
However, I see no examples in the documentation, and from what I have in the generated javascript (for my routes) there is no chance.
Is there any way to achieve what I am after?
thanks for reading!
p.s., I should add; I guess I have also thought of the possibility of using the ajax call that is generated, I guess I can probably fetch the page I want... and there is probably a means of replacing the current document with the entire content of the fetched page. but that just sounds bad.... wrong...
or not?
I was rather hoping for a substitution, as is done in my html
i.e, my link as shown above is generated to look like this:
<div class="footer">
<a href='/'>Home</a>
</div>
In the same way, I hoped there was some means of substitution in the javascript, so that the event function above ends up in being massaged into looking like this:
function() myEvent {
window.location="/entry";
}
Jacques, from the above comments, helped me to realize a work-around.
From within my "assets located" javascript file, I can still refer to page/template located javascript.
Own-file/assets located javascript doesn't seem to be transformed how I expected.
However, Page/template located javascript is transformed exactly how I require.
I can refer to a template located javascript function from my assets located javascript.
This means, I have a little work-around of one extra little function inside the template which does the redirection for me.
i.e.,
myJavascript.js:
function personResultsListClickHandler(personId) {
var fpersonId = personId;
return function() {
window.alert("hello! " + fpersonId);
affectRedirect();
};
}
myTemplate.scala.html
#main("person lookup") {
<script type="text/javascript">
function affectRedirect(){
window.location="#routes.Application.entry()";
} // Need this here so it will be transformed.
// asset located javascript doesn't seem to get transformed like javascript here in template! :(...
</script>
Another possibility is the fact that the Javascript object retrieved by calling:
appRoutes.controllers.Application.entry()
contains a url member. This url member is exactly what I can use to assign to window.location. However, it looks a bit unofficial.. in terms of
1. the member not being documented
2. not sure if the url member will exist in the future
3. the generated javascript is constructing an object dealing with ajax... and i'm just grabbing the URL member from it... it just feels... like a hack.
But i've tested this, and it works. See code below:
function patientResultsListClickHandler(personId) {
var fpersonId = personId;
return function() {
window.location=appRoutes.controllers.Application.entry(personId).url;
// window.location="/entry/" + fpersonId; // the sort of hard-coding of URL that
}; // I wanted to avoid, but don't seem able to.
}
Does anyone else have a better solution?
i am working on this little javascript library and following various suggestions i am wrapping my functionality in a closure for the various reasons (encapsulation of variables, hidding of code and so on). since I query a JSON webservice and display the results I also use the jquery tmpl engine.
I think I understand what closures are good for but I sure don't understand them in general. meaning I get totally lost between all those scope changes and whatnot. especially annoying is this exception I get. consider the following code (a simplified ugly version of the code in question, but it reproduces the problem)
// something would be the object that handles all the library functionality
var something = function(){
// creating a local function that goes as a parameter into the Array.filter
function isBar(data){
return data.name === "bar";
}
// the template code
var bla = "<h1>${name}<\h1><h2>${attribute.filter(isBar)[0].value}</h2>";
// precompiling the the template
$.template("test", bla);
// and returning a function that should render the template with the provided data
return {
funny: function(){
$.tmpl("test", [{"name":"Fo", "attribute":[{"name":"bar", "value":"how"}]},
{"name":"Foo", "attribute":[{"name":"fnord","value":"can"}]},
{"name":"Fooo", "attribute":[{"name":"bar","value":"this"}]},
{"name":"Foooo", "attribute":[{"name":"Bar", "value":"be"}]}
]);
}
}
}();
// calling the function
something.funny();
So when calling the something.funny() I would the following expect to happen: the function funny, being a closure gets called in its original context (e.g. the function isBar and the variable bar are defined). So when I call $.tmpl I hoped that attribute.filter(isBar) within the template would also be in this scope. but it isn't. I Chrome i get ReferenceError: isBar is not defined.
If someone would be so nice to show me the error of my ways I would be very happy.
edit oops I missed the "()".
OK, well the problem is that those references to the local variables in the closure are not really references to local variables - they're part of a string. The template code has to parse that string, so when it does that the fact that there was a function called "isBar()" in the closure from where "$.tmpl()" was called really doesn't matter; jQuery can't access them because you just can't do that in JavaScript.
You can, however, pass in an "options" third parameter to "$.tmpl()" and provide extra stuff there. I'm not 100% sure how to do it as I've only played with the template plugin a little bit, but I'll try a jsfiddle when I have a chance. I think that you'd basically do something like this:
funny: function(){
$.tmpl("test", [{"name":"Fo", "attribute":[{"name":"bar", "value":"how"}]},
{"name":"Foo", "attribute":[{"name":"fnord","value":"can"}]},
{"name":"Fooo", "attribute":[{"name":"bar","value":"this"}]},
{"name":"Foooo", "attribute":[{"name":"Bar", "value":"be"}]}
], { isBar: isBar });
}
What I'm not sure of is whether you refer to that as "${isBar()}" or "${item.isBar()}" inside the template text.
I'm using Uploadify to upload file in my CMS. Everything works fine until recently. I got an error
Error calling method on NPObject
on this line
document.getElementById(jQuery(this).attr('id') + 'Uploader').startFileUpload(ID, checkComplete);
on this part
uploadifyUpload:function(ID,checkComplete) {
jQuery(this).each(function() {
if (!checkComplete) checkComplete = false;
document.getElementById(jQuery(this).attr('id') + 'Uploader').startFileUpload(ID, checkComplete);
});
},
I don't know why and after a day debugging and testing I found that if I remove replace(/\&/g, '\\&') from
String.prototype.escAll = function(){
var s = this;
return s.replace(/\./g, '\\.').replace(/\?/g, '\\?').replace(/\&/g, '\\&');
};
It then works again. I really don't know why.
Any helps would be appreciated!
I think the reason is in additional Javascript libraries you use.
Some libraries (for example Prototype.js or jQuery.js) change behaviour of your code. For example, you can't overload prototype in some cases. The result may be undefined in clear (obvious) places (like you use an array variable with wrong index). You should view the source code of additional libraries, probably they do with prototype something that breaks your code in the function you mentioned.
In my practice I had the situation when overloading of prototype worked incorrectly (it was String prototype like in your case).
So just don't use prototype.
I have a CDHTMLDialog, with which I have 2 HTML pages and a .js file with a few fairly simple functions.
I would like to be able to call one of the JS functions from my program with a simple data type passed with it. e.g. MyFunc(int). Nothing needs to be returned.
I would appreciate any guidance on how I go about this,
thanks.
Edit: Thanks to CR for his answer, and everyone else who submitted there ideas too.
Something a little like this worked in the end (stripped a little error handling from it for clarity):
void callJavaScriptFunc(int Fruit)
{
HRESULT hRes;
CString FuncStr;
CString LangStr = "javascript";
VARIANT vEmpty = {0};
CComPtr<IHTMLDocument2> HTML2Doc;
CComPtr<IHTMLWindow2> HTML2Wind;
hRes = GetDHtmlDocument(&HTML2Doc);
hRes = HTML2Doc->get_parentWindow(&HTML2Wind);
if( Fruit > 0 )
{
FuncStr = "myFunc(808)"; // Javascript parameters can be used
hRes = HTML2Wind->execScript(FuncStr.AllocSysString(), LangStr.AllocSysString(), &vEmpty);
}
}
Easiest approach would be to use the execScript() method in the IHTMLWindow2 interface.
So you could get the IHTMLDocument2 interface from your CDHTMLDialog by calling GetDHtmlDocument, then get the parentWindow from IHTMLDocument2. The parent window will have the IHTMLWindow2 interface that supports execScript().
There might be an easier way to get the IHTMLWindow2 interface from your CDHTMLDialog but I'm used to working at a lower level.
the SpiderMonkey library can "Call a JavaScript function from C++", please refer to
http://egachine.berlios.de/embedding-sm-best-practice/ar01s02.html#id2464522
but in your case, maybe this is not the answer.
To give you a hint - javascript injection in server-side-technologies is usually performed through bulk-load at startup (GWT) or injected when the HTML is generated and served each post-back (ASP.NET).
The important point of both approaches is that they inject the javascript calls somewhere in the page (or in a separated .js file linked in the HTML in case of GWT) when generating the HTML page.
Even if you're on win development (looks like it since you're on MFCs) it might be the case that you have to insert your js method call in the HTML and then load (or reload if you wish to interact with the html from your MFC app) the HTML file in your CHTMLDialog.
I don't see any other way of achieving this (maybe I am just not aware of some suitable out-of-the-box functionality) other than editing your HTML and (re)loading it - which is pretty convenient and workable if you have to call your js method once off or just inject some kind of event-handling logic.
Might be a bit of a pain if you have to interact with the page from your MFC app. In this case you have to re-generate your HTML and reload it in your CHTMLDialog.
Either way you can simply have some kind of placeholder in your HTML file, look for that and replace with your javascript code, then load the page in your CHTMLDialog:
onclick="__my_Javascript_Call_HERE__"