I have a ruby file namely sample.rb. I want to execute that from my form and, actually my ruby code when executed will write to a html file. So what i need to do is when i click on the button in the form it should execute the ruby code and then it has to open the html file that comes from execution in one of the frame in my form. Is it is possible? If possible! how to do?
What i have tried is
<?php
exec("./sample.rb")
?>
But what it does is. It simply took the url of the api that i have used in ruby code and it returns the json from that api.
May be you should use rails for that http://rubyonrails.org
You are invoking sample.rb as an external command, just like any other shell script. Therefore you have to capture and process its output yourself.
You say that "it returns the JSON from the api". That's fine, you can extract the data you are interested in, e.g.:
<?php
$json = exec("./sample.rb");
$data = json_decode($json);
$url = $data->url; # assuming there is an URL field
?>
Now you can for example output a link:
click
or generate some JavaScript:
<script>
window.location.href="<?php echo $url ?>";
</script>
or redirect the user via a HTTP header:
<?php
header("Location: $url");
?>
Related
This should be easy and pretty standard, but I haven't found it anywhere.
So there is this webpage with lots of events I'd like to have on my gCal. But I don't want to simply import them once, as they are routinely updated, but rather to subscribe to an ical feed based on them.
So I've successfully parsed the page into a gSheet using the IMPORTXML function, and published it as csv, using the very same headers and formatting gCal demands for importing csv files.
Now all I need to do is convert csv to ical, since gCal imports but doesn't subscribe to csv (why?!). There are a bunch of csv-to-ical converters out there, and some even online, but they all require you to upload the csv file, rather than taking an url (let alone as an argument, rather than as a POST query).
If only there was a Google Apps Script to do it… is that possible? How?
So I wrote one, which is generating the ics file, which seems to be in order, as I formatted the fields in gSheets accordingly, but gCal, while taking the subscription without error, shows no events. I suspect it may be a related problem to this.
csv2ical.gs:
function doGet() {
return
ContentService
.createTextOutput(HtmlService.createTemplateFromFile('template')
.evaluate().getContent()).setMimeType(ContentService.MimeType.ICAL);
}
template.html
<? var url = 'https://docs.google.com/spreadsheets/d/e/2PACX-1vQevL9qR46RxyhcmHrp8ekoElMLctUjazcuYlKsIkFeRsEQe0XOiYrJSF1OIyfRfshzUGncfdh12kst/pub?gid=709766031&single=true&output=csv'; ?>
BEGIN:VCALENDAR
VERSION:2.0
<? var events = Utilities.parseCsv(UrlFetchApp.fetch(url).getContentText()); ?>
<? for(var i=1;i<events.length;i++){ ?>
BEGIN:VEVENT
SUBJECT:<?= events[i][0] ?>
DESCRIPTION:<?= events[i][1] ?>
DTSTART:<?= events[i][2] ?>
DTEND:<?= events[i][3] ?>
LOCATION:<?= events[i][4] ?>
STATUS:CONFIRMED
END:VEVENT
<? } ?>
END:VCALENDAR
I am trying to figure out how to make a simple html code so that whenever anyone on the page types anything into the provided text box and hits submit, it adds that written text to an already existing .txt file on my server.
UPDATE 2/20/14 9:29AM: Well that's unfortunate. I kind of figured I required a .php but sadly my wepbage is hosted through homestead and they do not have .php functionality. Was just hoping there was a workaround. Thanks for the responses.
If your server can run php then the following page can be requested when the user clicks submit. (using post method)
<?php
$in = $_POST['name'];
$file = 'names.txt';
// Open the file to get existing content
$current = file_get_contents($file);
// Append a new person to the file
$current .= $in;
// Write the contents back to the file
file_put_contents($file, $current);
?>
You would have to use PHP to do this. Make the form action on your form link to a PHP script and inside have something like this.
<?php
$file = 'test.txt';
$currentText = file_get_contents($file);
$currentText .= $_POST['text'];
file_put_contents($file, $currentText);
?>
I am trying to use the following php code to display another html page. Sadly nothing is printed on the screen, and yes I have checked and confirmed that the link works. Any thoughts on why this could be happening would be helpful thank you.
$site = readfile("http://k9minecraft.tk/thanks.html");
echo $site;
First, make sure php is configured so that allow_url_fopen is on.
If you want to save the string to a variable, try using file_get_contents instead since it adds the file to memory. Refer file_get_contents for more detailed information on official documentation.
$site = file_get_contents("http://k9minecraft.tk/thanks.html");
echo $site;
The readfile function reads the file directly to the output buffer, so it doesn't require an echo. Refer readfile for more detailed information on official documentation.
readfile("http://k9minecraft.tk/thanks.html");
readfile is more efficient in terms of memory usage, whereas file_get_contents more useful in many situations.
<?php
//other php codes here
?>
Link Name
<?php
//continue other php codes.
?>
how about that ? Without using readfile.
readfile() actually returns just the number of characters read from the file. The content of the file is stored in buffer.
Turn output buffering OFF.
Use something like ob_end_flush
Check this too...It may help you
I am trying to understand the concept of JSON RPC and it's Perl implementation. Though I can fin d a lot of examples for Python/Java, I find surprisingly little or no examples for it in Perl.
I am following this example but am not sure it is complete. The example I had in mind was to add 2 integers. Now I have a very basic HTML page set up, like so:
<html>
<body>
<input type="text" name="num1"><br>
<input type="text" name="num2"><br>
<button>Add</button>
</body>
</html>
Next, based on the example above, I have 3 files:
test1.pl
# Daemon version
use JSON::RPC::Server::Daemon;
# see documentation at:
# https://metacpan.org/pod/distribution/JSON-RPC/lib/JSON/RPC/Legacy.pm
my $server = JSON::RPC::Server::Daemon->new(LocalPort => 8080);
$server -> dispatch({'/test' => 'myApp'});
$server -> handle();
test2.pl
#!/usr/bin/perl
use JSON::RPC::Client;
my $client = new JSON::RPC::Client;
my $uri = 'http://localhost:8080/test';
my $obj = {
method => 'sum', # or 'MyApp.sum'
params => [10, 20],
};
my $res = $client->call( $uri, $obj );
if($res){
if ($res->is_error) {
print "Error : ", $res->error_message;
} else {
print $res->result;
}
} else {
print $client->status_line;
}
myApp.pl
package myApp;
#optionally, you can also
use base qw(JSON::RPC::Procedure); # for :Public and :Private attributes
sub sum : Public(a:num, b:num) {
my ($s, $obj) = #_;
return $obj->{a} + $obj->{b};
}
1;
While I understand what these files individually do, I am at a complete loss when it comes to combining them and making them work together.
My questions are as follows:
Does the button in the HTML page come inside a tag (like we would normally do in a CGI-based program)? If yes, what file does that call? If no, then how do I pass the values to be added?
What is the order of execution of the 3 Perl files? Which one calls which one? How is the flow of execution?
When I tried to run the perl files from the CLI, i.e using $./test2.pl, I got the following error: Error 301 Moved Permanently. What moved permanently? which file was it trying to access? I tried running the files from withing /var/www/html and /var/www/html/test.
Some help in understanding the nuances of this would really be appreciated. Thanks in advance
Does the button in the HTML page come inside a tag (like we would
*normally do in a CGI-based program)? If yes, what file does that call?*
If no, then how do I pass the values to be added?
HTML has nothing at all to do with JSON-RPC. While the RPC call is done via an HTTP POST request, if you're doing that from the browser, you'll need to use XMLHttpRequest (i.e: AJAX). Unlink an HTML form post the Content-encoding: header will need to be something specific to JSON-RPC (e.g: application/json or similar), and you'll need to encode your form data via JSON.stringify and correctly construct the JSON-RPC "envelope", including the id, jsonrpc, method and params properties.
Rather than doing this by hand you might use a purpose-build JSON-RPC JavaScript client like the jQuery-JSONRP plugin (there are many others) -- although the protocol is so simple that implementations usually are less than 20 lines of code.
From the jQuery-RPC documentation, you'd set up the connection like this:
$.jsonRPC.setup({
endPoint: '/ENDPOINT-ROUTE-GOES-HERE'
});
and you'd call the server-side method like this:
$.jsonRPC.request('sum', {
params: [YOURNUMBERINPUTELEMENT1.value, YOURNUMBERINPUT2.value],
success: function(result) {
/* Do something with the result here */
},
error: function(result) {
/* Result is an RPC 2.0 compatible response object */
}
});
What is the order of execution of the 3 Perl files? Which one calls
*which one? How is the flow of execution?*
You'll likely only need test2.pl for testing. It's an example implementation of a JSON-RPC client. You likely want your client to run in your web-browser (as described above). The client JavaScript will make an HTTP POST request to wherever test1.pl is serving content. (e.g: http://localhost:8080).
Or, if you want to keep your code as HTML<-->CGI, then you'll need to make JSON-RPC client calls from within your Perl CGI server-side code (which seems silly if it's on the same machine).
When test1.pl calls dispatch, the MyApp module will be loaded.
Then, when test1.pl calls handle, the sum function in the MyApp package will be called.
The JSON::RPC::Server module takes care of marshalling from JSON-RPC to perl datastructures and back again around the call to handle. die()ing in sum should result in a JSON-RPC exception being transmitted to the calling client, rather than death of the test1.pl script.
When I tried to run the perl files from the CLI, i.e using
*$./test2.pl, I got the following error: Error 301 Moved Permanently.*
What moved permanently? which file was it trying to access? I tried
*running the files from withing /var/www/html and /var/www/html/test.*
This largely depends the configuration of your machine. There's nothing obvious (in your code) to suggest that a 301 Moved Permanently would be issued in response to a valid JSON-RPC request.
Is it possible to use a server side include to access files that are outside of the server?
If not what are some other options to do this?
Use cURL to get data outside of the domain. If you want to then execute the data you receive, go ahead and eval() it. But, be forewarned that this will get the 'output' of the page. Meaning if it is an executed page like a '.php' page, you will get the data that comes out as a result of it being processed.
<?php
// create a new cURL resource
$ch = curl_init();
// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, 0);
// grab URL and pass it to the browser
curl_exec($ch);
// close cURL resource, and free up system resources
curl_close($ch);
?>
The same is true for file_get_contents(), and fopen()
If you wanted to grab the 'actual' contents of the file, you would want to set up a proxy of sorts on the other server. (You can't do it on your server because then it would be a security flaw in how server-side-scripting works).
<?php
// Read the requested file out
readfile($_GET['file']);
That will give you the contents of any file you request:
http://test.com/handler.php?file=handler.php
But, if anyone else finds it, it could be dangerous.
You don't mention the server software but I'll assume Apache, where SSI is provided by the mod_include module. The include element does not allow remote files. However, you have exec, which allows to execute any external tool; you can use it to call wget or any other command of your choice.
However, it might not be so complicate. If you can mount the remote directory in the local system, you can create a plain symlink and use a regular include.
Or, as already suggested, PHP is really simple to use.
You can do something like file_get_contents() or fopen() to do this in php, e.g.
<?php
echo file_get_contents('http://www.example.com/include');
?>
Yes, nginx's server side includes can use any full url eg:
<!--# include virtual="http://www.stackoverflow.com/" -->