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add lua page example with the form submitting

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This commit is contained in:
Mikhail Nikalyukin 2013-02-27 13:02:39 +02:00
parent a58bb71c19
commit 5ce1fc3c2a
2 changed files with 50 additions and 2 deletions
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10
UserManual.md
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@ -307,8 +307,9 @@ like request method, all headers, etcetera. Please refer to
`struct mg_request_info` definition in
[mongoose.h](https://github.com/valenok/mongoose/blob/master/mongoose.h)
to see what kind of information is present in `request_info` object. Also,
[page.lp](https://github.com/valenok/mongoose/blob/master/test/page.lp)
contains some example code that uses `request_info`.
[page.lp](https://github.com/valenok/mongoose/blob/master/test/page.lp) and
[prime_numbers.lp]()https://github.com/valenok/mongoose/blob/master/examples/lua/prime_numbers.lp
contains some example code that uses `request_info` and other functions(form submitting for example).
One substantial difference of mongoose's Lua Pages and PHP is that Mongoose
@ -323,6 +324,11 @@ It is easy to do things like redirects, for example:
<? print('HTTP/1.0 302 Found\r\nLocation: http://google.com\r\n\r\n') ?>
To serve Lua Page, mongoose creates Lua context. That context is used for
all Lua blocks within the page. That means, all Lua blocks on the same page
share the same context. If one block defines a variable, for example, that
variable is visible in the block that follows.
# Common Problems
- PHP doesn't work - getting empty page, or 'File not found' error. The
reason for that is wrong paths to the interpreter. Remember that with PHP,

42
examples/lua/prime_numbers.lp Normal file
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@ -0,0 +1,42 @@
<?
-- Lua server pages have full control over the output, including HTTP
-- headers they send to the client. Send HTTP headers:
print('HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n')
?>
<html>
<p>Prime numbers from 0 to 100, calculated by Lua:</p>
<?
function is_prime(n)
if n <= 0 then return false end
if n <= 2 then return true end
if (n % 2 == 0) then return false end
for i = 3, n / 2, 2 do
if (n % i == 0) then return false end
end
return true
end
for i = 1, 100 do
if is_prime(i) then print('<span>' .. i .. '</span>&nbsp;') end
end
?>
<p>Reading POST data from Lua (click submit):</p>
<form method="POST" ><input type="text" name="t1"/><input type="submit"></form>
<pre>
POST data: [<? print(read())?>]
request method: [<? print(request_info.request_method) ?>]
IP/port: [<? print(request_info.remote_ip, ':', request_info.remote_port) ?>]
URI: [<? print(request_info.uri) ?>]
HTTP version [<? print(request_info.http_version) ?>]
HEADERS:
<?
for name, value in pairs(request_info.http_headers) do
print(name, ':', value, '\n')
end
?>
</pre>
</html>