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AJAX
16-10-2007 9:56 PM
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I intend to use some Google features (such as ‘search’) from a home pages server page using AJAX calls from the browser going via a CGI PHP proxy script, and with XSLT translations on the CGI server on the way back.
However, since PN's CGI services run on a different server from the home pages server, I presume that this will prevent browser XMLHttpRequests from working.
If this is so, I appear to have a couple of options:
a. when (e.g.) the ‘search’ button is pressed, serve an intermediate ‘search’ page from the CGI server (instead of the normal server) which in turn issues the XMLHttpRequest
b. use a <form> POST to get the search string to the CGI server
Questions: will a. work given that the page was not served up as a result of a <link>? And if I use b., it presumably negates advantages of AJAX in that the user’s page will need to be refreshed and any further processing I may wish to do (and I cannot think of any at the moment!) in the browser is impossible
Is there a better way (apart from running the entire website from the CGI server)?
However, since PN's CGI services run on a different server from the home pages server, I presume that this will prevent browser XMLHttpRequests from working.
If this is so, I appear to have a couple of options:
a. when (e.g.) the ‘search’ button is pressed, serve an intermediate ‘search’ page from the CGI server (instead of the normal server) which in turn issues the XMLHttpRequest
b. use a <form> POST to get the search string to the CGI server
Questions: will a. work given that the page was not served up as a result of a <link>? And if I use b., it presumably negates advantages of AJAX in that the user’s page will need to be refreshed and any further processing I may wish to do (and I cannot think of any at the moment!) in the browser is impossible
Is there a better way (apart from running the entire website from the CGI server)?
Zen from May 17. PN Business account from 2004 - 2017
Message 1 of 3
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2 REPLIES 2
Re: AJAX
17-10-2007 9:15 AM
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"Given the new CCGI platform is supposed to be much more reliable..."
Hope so. However, the 'home pages server' part of the site is FTP updated from several locations - most using non-PN BB ISPs, and (for sensible reasons) PN bar FTPing to the CGI server except from a PN-block IP address
Hope so. However, the 'home pages server' part of the site is FTP updated from several locations - most using non-PN BB ISPs, and (for sensible reasons) PN bar FTPing to the CGI server except from a PN-block IP address
Zen from May 17. PN Business account from 2004 - 2017
Message 2 of 3
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Re: AJAX
25-10-2007 10:25 AM
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I see what you are trying to do,
you can do it both ways, just AJAX could be more difficult...
...
<BODY STYLE = "margin: 0px">
<SCRIPT LANGUAGE = "JavaScript" SCR = "MyFunkyScript.js">
<DIV STYLE = "height: 50px width: 100%">
<FORM NAME = "Form1" ACTION = "javascript:ajax_search(document.form1.search.value)">
<INPUT TYPE = "TEXT" NAME = "search">
</FORM>
<DIV ID = ""></DIV>
</BODY>
..
then make your funky script with all the AJAX stuff
you can write a function to change the contents of a DIV Tag
upon receiving all the data from the XML Socket with a POST/GET Method,
I would say post purely for the fact that idiots with just a web browser can't just lynch your script.
You can do it all server side as a PHP/Perl/Similar Script,
I find that way is usually more strait forward and simple,
Ether way if you are making a Proxy script, somewhere you will have to break into a Server Side language.
(Can't remember all the code off heart hopefully gives you a framework if you know some PHP)
YouTube has a very similar way of working,
Look at YouTube's JavaScript Files,
there is one named ajax-xxxxx.js (of some sort)
and one called ui-xxxxx.js
both have what you are after (I think) if your trying to do the Client side stuff
Yeah, the CCGI Space is protected on SSH (Port 22:TCP) from anywhere outside a PlusNet IP Range, but, the FTP is open from anywhere.
Instead, for my site, I chose to make my own admin panel so that I'm not using FTP or similar, in a public place (like at school :P)
Hope that helps.. (sorry if you knew all that or if you already got some of this down)
Jim,
you can do it both ways, just AJAX could be more difficult...
...
<BODY STYLE = "margin: 0px">
<SCRIPT LANGUAGE = "JavaScript" SCR = "MyFunkyScript.js">
<DIV STYLE = "height: 50px width: 100%">
<FORM NAME = "Form1" ACTION = "javascript:ajax_search(document.form1.search.value)">
<INPUT TYPE = "TEXT" NAME = "search">
</FORM>
<DIV ID = ""></DIV>
</BODY>
..
then make your funky script with all the AJAX stuff
you can write a function to change the contents of a DIV Tag
upon receiving all the data from the XML Socket with a POST/GET Method,
I would say post purely for the fact that idiots with just a web browser can't just lynch your script.
You can do it all server side as a PHP/Perl/Similar Script,
I find that way is usually more strait forward and simple,
Ether way if you are making a Proxy script, somewhere you will have to break into a Server Side language.
<?php
if($_SERVER["HTTP_REFERER"] == "http://www.site.com/path/file.html"){
$URL = parse_url($_POST["URL"]);
if($fp=fsockopen($URL["host"],$URL["port"],$en,$es,10)){
$header = 'HTTP Header Here'; // Will require some Ifs to use POST or GET method's
fputs($fp,$header);
while(!feof($fp)){ $data.= fgets($fp); }
//Other code here, if you want to replace links, form methods, image src lines, as to add to users ease of using the Proxy Script etc ... blah blah
echo $data; //return the page code
}else{
echo $en " - " $es;
}
}else{
echo "Stop trying to nick me script!";
}
(Can't remember all the code off heart hopefully gives you a framework if you know some PHP)
YouTube has a very similar way of working,
Look at YouTube's JavaScript Files,
there is one named ajax-xxxxx.js (of some sort)
and one called ui-xxxxx.js
both have what you are after (I think) if your trying to do the Client side stuff
Yeah, the CCGI Space is protected on SSH (Port 22:TCP) from anywhere outside a PlusNet IP Range, but, the FTP is open from anywhere.
Instead, for my site, I chose to make my own admin panel so that I'm not using FTP or similar, in a public place (like at school :P)
Hope that helps.. (sorry if you knew all that or if you already got some of this down)
Jim,
Message 3 of 3
(258 Views)
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