This document provides examples of using Ring to build web applications that handle HTTP requests and responses. It includes examples of GET and POST requests, uploading files, using cookies, and URL encoding. Each example includes the Ring code for the page interface and response, and screenshots of the resulting webpages. The examples demonstrate fundamental techniques for developing dynamic web content with Ring like retrieving and displaying submitted form data, uploading files, and using cookies and URL parameters.

1. Ring Documentation, Release 1.2
The Response
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
New Page
{
divstart([ :style = styledivcenter("800px","500px") ])
boxstart()
text ( "HTTP GET Response" ) newline()
boxend()
divstart([ :style = stylefloatleft()+stylewidth("10%")+
41.5. HTTP Get Example 260

2. Ring Documentation, Release 1.2
stylecolor("black")+stylegradient(58) ])
newline()
text ( "Name : " )
newline() newline()
text ( "Address : " )
newline() newline()
text ( "Phone : " )
newline() newline()
text ( "Age : " )
newline() newline()
text ( "City : " )
newline() newline()
text ( "Country : " )
newline() newline()
text ( "Note : " )
newline() newline()
divend()
divstart([ :style = stylefloatleft()+stylewidth("90%")+
stylecolor("black")+stylegradient(47) ])
divstart([ :style = stylefloatleft() + stylewidth("1%") ])
newline()
divend()
divstart([ :style = stylefloatleft() + stylewidth("95%") ])
newline()
text ( aPageVars["Name"] )
newline() newline()
text ( aPageVars["Address"] )
newline() newline()
text ( aPageVars["Phone"] )
newline() newline()
text ( aPageVars["Age"] )
newline() newline()
text ( aPageVars["City"] )
newline() newline()
text (aPageVars["Country"] )
newline() newline()
text ( aPageVars["Notes"] )
newline() newline()
divend()
divend()
divend()
}
Screen Shot:
41.5. HTTP Get Example 261

3. Ring Documentation, Release 1.2
41.6 HTTP POST Example
The Page User Interface
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
New Page
{
boxstart()
text( "Post Test")
newline()
boxend()
divstart([ :style=StyleFloatLeft()+StyleWidth("100px") ])
newline()
text( "Number1 : " ) newline() newline()
text( "Number2 : " ) newline() newline()
divend()
formpost("ex7.ring")
divstart([ :style = styleFloatLeft()+StyleWidth("200px") ])
newline()
textbox([ :name = "Number1" ]) newline() newline()
textbox([ :name = "Number2" ]) newline() newline()
submit([ :value = "Send" ] )
divend()
formend()
}
Screen Shot:
41.6. HTTP POST Example 262

4. Ring Documentation, Release 1.2
The Response
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
New Page
{
boxstart()
text( "Post Result" )
newline()
boxend()
divstart([ :style = styleFloatLeft()+styleWidth("200px") ])
newline()
text( "Number1 : " + aPageVars["Number1"] )
newline() newline()
text( "Number2 : " + aPageVars["Number2"] )
newline() newline()
text( "Sum : " + (0 + aPageVars["Number1"] + aPageVars["Number2"] ) )
newline()
divend()
}
Screen Shot:
41.6. HTTP POST Example 263

5. Ring Documentation, Release 1.2
41.7 Upload Files
The Page User Interface
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
New page
{
boxstart()
text( "Upload File" )
newline()
boxend()
for x = 1 to 3 newline() next
formupload("ex9.ring")
text( "Customer Name : " )
textbox([ :name = "custname" ])
newline() newline()
divstart([ :style = styleFloatLeft() + styleWidth("90px") ])
uploadfile("file") newline() newline()
uploadfile("file2") newline() newline()
submit([ :value = "Send" ])
divend()
formend()
}
Screen Shot:
41.7. Upload Files 264

6. Ring Documentation, Release 1.2
The Response
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
cUploadPath = "C:/Apache2.2/htdocs/ringapp/upload/"
cUploadFolder = "/ringapp/upload/"
New page
{
boxstart()
text( "Upload Result" )
newline()
boxend()
newline()
divstart([ :style= styleFloatLeft() + styleWidth("100px") ])
text( "Name : " + aPageVars["custname"] )
newline()
divend()
if aPageVars["file"] != char(13)
getuploadedfile(self,"file")
ok
if aPageVars["file2"] != char(13)
getuploadedfile(self,"file2")
ok
}
Func getuploadedfile oObj,cFile
# here we use object.property
# instead of object { } to avoid executing braceend method
cFileName = cUploadPath + oObj.getfilename(aPageVars,cFile)
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7. Ring Documentation, Release 1.2
write(cFileName,aPageVars[cFile])
system("chmod a+x "+cFileName)
oObj.newline()
oObj.text( "File "+cFileName+ " Uploaded ..." )
oObj.newline()
imageURL = cUploadFolder+oObj.getfilename(aPageVars,cFile)
oObj.link([ :url = imageURL, :title = "Download" ])
oObj.newline()
oObj.image( [ :url = imageURL , :alt = :image ] )
oObj.newline()
Screen Shot:
41.7. Upload Files 266

8. Ring Documentation, Release 1.2
41.8 Cookies
The Page User Interface
#!c:ringbinring.exe -cgi
Load "weblib.ring"
41.8. Cookies 267

9. Ring Documentation, Release 1.2
Import System.Web
New page
{
boxstart()
text( "Cookie Test" )
newline()
boxend()
newline()
link([ :url = "ex11.ring", :title = "Use Cookies" ])
cookie("custname","Mahmoud Fayed")
cookie("custage",28)
}
Screen Shot:
The Response
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
New Page
{
boxstart()
text( "Cookies Values" )
newline()
boxend()
link([ :url = "ex10.ring", :title = "back" ])
newline()
divstart([:style="float:left;width:200px"])
text( "Name : " + aPageVars["custname"] )
newline()
text( "Age : " + aPageVars["custage"] )
newline()
divend()
}
Screen Shot:
41.8. Cookies 268

10. Ring Documentation, Release 1.2
41.9 URL Encode
The Page User Interface
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
New Page
{
boxstart()
text( "URLEncode" )
newline()
boxend()
link([ :url = "ex5.ring?Name="+URLEncode("-*{Mahmoud}*-")+
"&Address=Egypt&Phone=123456&Age=28&Notes=Programmer",
:title = "Test URL Encode" ])
}
Screen Shot:
Screen Shot:
41.9. URL Encode 269