problem CasperJS POST via AJAX not working - javascript

I'm working on a scraper of my bank statements with CasperJS, so far I've managed to login and get to the statements page. I accomplished to get the table with the first page of the statement, but I need to get it complete.
The bank's web have the option to export to a .txt file (sort of a CSV actually), but in order to download it I have to be able to download the file that comes as an attachment in the response header of a POST request when I submit a form by clicking a button.
So I figured that I could do the POST via AJAX, get the response and output it. I tried running the code on the firebug console and it works, but for some reason it just doesn't work in CasperJS.
Btw, I have tried using --web-security=no , still doesn't work
This is how I'm trying to do it:
this.then(function() {
eurl = "http://bankurl.com";
response = this.evaluate(function() {
params = $("#lForm").serialize();
$.ajax({
type: "POST",
url: eurl,
data: params,
success: function (data) {
return data.responseText;
},
error: function (xhr,status,error){
return error;
}
});
});
this.echo(response);
});

I wasn't able to test this with the code you provided, but it looks as though you just aren't returning anything back from the evaluate().
return __utils__.sendAJAX(url, 'POST', params);
You would probably also need to call CasperJS with the following:
casperjs --ignore-ssl-errors=true /path/to/script.js

Well, after struggling finding a way to solve this I finally did, I just put the ajax call inside a try catch and found that the error was that it wasn't reading the eurl variable (I declared it outside the evaluate). I put it inside and it worked. Thanks for your help

Related

Strange ajax behavior with Zepto and Cordova

Something strange is going on with an Ajax call I'm making and I can't figure out why its happening, maybe someone can shed some light.
This is the call
$.ajax({type:'POST', url: apiURL+"misc/"+cola, headers: {'apikey':localStorage.apiKey}, dataType: 'html', success:function(data) {
$("#pagina").html(data);
postCarga("pagina");
}, error: function() {
sinConexion();
}});
Now, this should take the "data" received from Ajax and fill div#pagina with it, but the div stays empty.
Here's the strange part, I called console.log(data) to see if the data is getting through and then it not only logs to the console but properly fills in the div#pagina with the returned data.
If I just try to fill it in directly, the div stays empty, but if I do anything beforehand (even something like var xxx = data;), it gets filled in correctly.
I worked around it by moving the filler function into postCarga so my final code looks like this:
$.ajax({type:'POST', url: apiURL+"misc/"+cola, headers: {'apikey':localStorage.apiKey}, dataType: 'html', success:function(data) {
postCarga(data,"pagina");
}, error: function() {
sinConexion();
}});
,but that feels strange.
// EDIT //
Here's the whole function
function postCarga(datos,que) {
$("#"+que).html(datos).animate({top:'0%'},350,'ease-in',function() { $("#cargando").css("display","none"); });
}
,originally, all it did was animate and then hide the loader, the html(datos) is part of my fix.
Ok, I just found the reason. I was testing out different things by side-stepping the received data and just trying $("#pagina").html("Hello") and other things, after all of those worked I went trough the html returned by the Ajax call and that's where I found the answer.
I changed the return from the API to send just
<h1>Hello</h1>
and it worked fine, afterwards I manually built up the whole HTML string until I had a carbon copy of what the script generated, sometimes it would load and sometimes not, which was stranger still.
I passed the returned HTML through various lints and checkers and only one of them returned an error, one of the images in the block returned a 404, so I removed that image (and only that image) from the returned HTML and it loaded fine.
In essence, it seems that when Ajax is set to html (dataType: 'html'), each and every thing - direct or remote - in the entire block must be valid html and return a success when called, or it will be silently ignored.
Changing dataType to "text" makes it skip that check and just inject everything into the div as intended.

Undefined index on ajax call only for one function

I have several different ajax calls on the same php page, but I get undefined index for only one function (createAlbum).
I send exactly the same parameters in each of my ajax calls. It worked fine for a few tests, but now it only works for the other ones, but not for this specific call.
I suspected that the .js file was still in the browser cache, so I cleared it and tried with other browsers, which worked for a few more attempts.
Now, I can't get it working on any browser, and definitely don't understand why.
Here is my ajax call :
$.ajax({
type: "POST",
url: BASE_URL,
data: {
action: "createAlbum",
data: JSONAlbum
},
cache: false,
success: callback
});
My php file handling the request ($_POST['action'] is always undefined with the above request) :
if (isset($_POST['action'])) {
switch ($_POST['action']) {
// Handle the action
// ...
}
} else {
echo 'ACTION : '.$_POST['action'];
}
The header containing the ajax parameters ("data" is a json containing one or more blob images, this might be the problem, but I didn't find anything saying so) :
And finally, the response containing the error :
I really hope this is not a dumb error of mine, but I asked a friend before posting, and he can't find the solution either.
Thanks for your help !
You said that the error not happens all the time (in some call yes, in other no).
The body post is sent, you see it in console. So we can exclude javascript problem.
So the problem is something that happens before or during the process.
PHP has some limitations on input vars, you can see it in php.ini.
I see that you send images in base64, so it's probable that something of these limitations are triggered.
See for example:
max_input_time
max_input_vars
post_max_size

Javascript variable to PHP variable?

Jquery function:
$(document).ready(function() {
$(".checkbox").click(function(){
var selVal = $(this).val();
$.ajax({
type: "POST",
url: 'remove_task.php', //This is the current doc
data: ({sel: selVal}),
success: function(data){
//alert(selVal);
console.log(data);
}
});
});
});
My PHP function in remove_task.php:
function remove_selected_task()
{
$task_to_remove = $_POST['sel'];
echo $task_to_remove;
}
if (isset($_POST['remsubmit']))
{
remove_selected_task();
}
Not able to pass this successfully. Can anyone help me out? Thanks in advance.
try to pass the $_POST variable into the function for ex:
remove_selected_task($_POST['sel']);
function remove_selected_task($task_to_remove)
{
echo $task_to_remove;
}
Start by trying to diagnose the issue using the browser dev tools. Press F12 to get the dev tools panel, and go to the Network tab.
Now click your checkbox and watch for what happens...
Does the network panel show the request being made to remove_task.php?
If not, then there's a problem in your javascript where it registers the click event. Maybe the selector is wrong or something like that.
If the network panel does show the request being made, click on it there to get more info about it, and then look at the request data and the response data.
Does the request send the data you're expecting it to, and in the correct format?
If not, then you'll need to debug your Javascript to see why. I can't really help with that unless I actually see the data, but you should be able to get an idea of what the problem is by what's being sent incorrectly. Maybe the checkbox value is wrong?
If it does look right, then move on to the response.
Does the response contain the data you expect?
If it has a 404 response code, then your URL is incorrect. Maybe the path is wrong?
If the response includes an error message, then you should be able to debug the PHP from that. It'll have the relevant line numbers in it, so that should be enough to get you going.
If the response is blank, then your PHP code isn't sending anything back: Maybe a syntax error (with error suppression), or maybe the program ends before it gets to echo the data. Either way, further debugging in the PHP will be required.
That's about as much help as I can give, given the info you supplied in the question. I hope that's enough to get you started.
This will solve your problem, and next time add the full code in your question.
you check if "remsubmit" exists in your php file, but you don't send it ! This should work by modifying the line data: ({sel: selVal}) as below :
$(document).ready(function() {
$(".checkbox").click(function(){
var selVal = $(this).val();
$.ajax({
type: "POST",
url: 'remove_task.php', //This is the current doc
data: {sel: selVal, remsubmit:"1"},
success: function(data){
//alert(selVal);
console.log(data);
}
});
});
});

Ext.data.JsonP.request always going to failed function?

I am doing application in Extjs, i am calling Ext.data.JsonP.request. In below code url path will come dynamically generate by appending name to base url of pdf. But Here i am hard coded. I am passing this url and testing jsonp request. if this url returns success i can write code success logic else failure, but here always going to failure method. also i have tried Ajax.request but no use. Some time i will get pdf path but that pdf is not in server that time i need showcase alert message like pdf is not found. Can tell me how can achieve this one? is it possible by calling jsonp request or any other method? Thank you
here is my code:
Ext.data.JsonP.request({
url: 'http://jmlr.csail.mit.edu/papers/volume10/mannor09a/mannor09a.pdf',
method: 'GET',
params: {
//fileID: feed_id, //this.form.getComponent('file').value,
},
failure: function () {
alert('failed !');
},
success: function () {
alert('success!');
}
});
Are you sure, that you need ajax to get pdf file? If you want to display this file to user, you can just put direct link to this file (without ajax or other tricks) and browser will show it.
Hard to understand, what do you want to get in the success function.
My recommendation to use plain link (you still can generate it dynamically to user)
Link
against using JSONP in this situation :)

ajax request returning script tag-- mootools

I'm seeing a weird error in one of my ajax-updated pages.
The request looks like this:
var a = new Ajax(url,{
method: 'get',
onComplete: function( response ){
$('loader').style.display="none";
readData( response );
}
});
a.request();
return;
This works fine on almost any system so far, but on a new server it breaks, with a mootools error "unknown XML entity". The weird part is, if you trace the request with firebug, rather than returning JSON as expected, the response body looks like this:
<script>document.location.href='http://www.mysite.com?myparams=value&etc;</script>
However, if you actually make that request manually by pasting the URL in the script tag (response body) along with the params in a browser, the proper JSON data is returned.
Any ideas why the request would return a script tag instead of the data?
As Dimitar suggested in the comments above, this was an issue in a Joomla site thanks to a URL rewrite tool called sh404SEF. According to the developer, the fix is to set the "301 redirect" parameter to "no" in the advanced configuration options.
So this had nothing to do with my code or the ajax functions, but was rather the SEF rewrite component that was breaking the request.

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