> To: user@struts.apache.org
> Subject: RE: Textfield onchange --> handling ajax error response to show
> action errors
> From: christoph.nenn...@lex-com.net
> Date: Wed, 2 Sep 2015 10:08:16 +0200
>
> The documentation about ajax-validation might help you:
>
> http://struts.apache.org/docs/ajax-validation.html
>
>
> Basically you have to create JSON with 'errors' like this:
>
> http://struts.apache.org/docs/ajax-validation.html#AJAXValidation-Howitworks
>
>
> And you might use the JavaScript function
> StrutsUtils.showValidationErrors( ) to display them. Of course you must
> include struts utils.js to use that function.
MG>this would assume your errors are JSON formatted as:
{"errors": ["Global Error 1", "Global Error 2"],"fieldErrors": {
"field1": ["Field 1 Error 1", "Field 1 Error 2"],"field1": ["Field 2
Error 1", "Field 2 Error 2"] }}
MG>
MG>in StrutsUtils.getValidationErrors below if data is POJO return the POJO
object
MG>otherwise return from position 2 after the /* as seen here
StrutsUtils.getValidationErrors = function(data) {
if (typeof data === "object") {
return data;
}
else {
if (data.indexOf("/* {") === 0) { // /* { must be in position 0
return eval("( " + data.substring(2, data.length - 2) + " )");
} else {
return null;
}
}
};
MG>later on in StrutsUtils.showValidationErrors johann looks for the enclosing
Div as seen here:
var enclosingDiv = findWWGrpNode(elem); // find wwgrp div/span
MG>so if your jsp contains NO div...then this wont work
MG>I always have 2 div tags in jsp:
MG>one for normal output response with green color:
WORKS
MG>one for error output response with red color:
DOESNT
WORK
MG>in postValidation method up to receiving the text
function postValidation(request) { var form = $('form'); //clear
previous validation errors, if any StrutsUtils.clearValidationErrors(form);
//get errors from response var text = request.responseText;
//this is where I would test text for error response or normal response
if(text.indexOf("error")!=-1)
{
if(isJson(text) == "false") error.innerHTML = text; //normal error text
else error.innerHTML = JSON.parse(text); //JSON error text
}
else
{
if(isJson(text) == "false") ok.innerHTML = text; //normal response text
else ok.innerHTML = JSON.parse(text); //JSON response text
form.submit();
}
} //end postValidation
function isJson( jsonData )
if (typeof jsonData == 'string')
{
if (! /^[\[|\{](\s|.*|\w)*[\]|\}]$/.test(jsonData))
{
return "true";
}
}
try
{
jsonData = $.parseJSON(jsonData);
}
catch (e)
{
return "false";
} //any exception will return false
return "true";//valid JSON formatted data
) //end isJson
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse
http://stackoverflow.com/questions/3710204/how-to-check-if-a-string-is-a-valid-json-string-in-javascript-without-using-try
http://www.w3schools.com/jsref/jsref_indexof.asp
HTH
Martin
>
>
>
> regards,
> Christoph
>
>
>
>
> > From: fea jabi <zy...@hotmail.com>
> > To: "user@struts.apache.org" <user@struts.apache.org>,
> > Date: 01.09.2015 14:37
> > Subject: RE: Textfield onchange --> handling ajax error response to
> > show action errors
> >
> > Can you point me to a link that has the sample which does this
> > please? I tried but couldn't get the result.
> >
> > Thanks, for trying to help me on this.
> >
> >
> >
> > > From: lukaszlen...@apache.org
> > > Date: Sun, 30 Aug 2015 15:22:52 +0200
> > > Subject: Re: Textfield onchange --> handling ajax error response
> > to show action errors
> > > To: user@struts.apache.org
> > >
> > > works on server side but JavaScript works on client
> > > side - it isn't possible to join them. You can only mimic its
> > > behaviour by adding the same html structure as does.
> > >
> > > 2015-08-28 17:14 GMT+02:00 fea jabi <zy...@hotmail.com>:
> > > > text-field onchange ---> making ajax call.
> > > >
> > > >
> > > > onsucess ---> everything works fine as needed
> > > >
> > > >
> > > > on failure - > like user entered wrong data ---> How to show
> > the error messages in jsp. I added fieldError but not sure how to
> > show it in jsp with the ajax stuff.
> > > >
> > > > In jsp
> > > >
> > > >
> > > >
> > > >
