The Ring programming language version 1.8 book - Part 47 of 202

Ring Documentation, Release 1.8
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
#!ring -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:
50.8. Cookies 431

50.9 URL Encode
The Page User Interface
#!ring -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:
50.9. URL Encode 432

50.10 Templates
Using Templates we can write Ring code inside HTML ﬁles
Syntax:
<%= Ring Expression %>
<% Ring Statements %>
The HTML Code
<h1>Listing Numbers</h1>
<table>
<tr>
<th> <%= myheader.cColumn1 %> </th>
<th> <%= myheader.cColumn2 %> </th>
<th></th>
<th></th>
<th></th>
</tr>
<% for x in aNumbers %>
<tr>
<td> <%= x.nValue %> </td>
<td> <%= x.nSquare %> </td>
</tr>
<% next %>
</table>
The Ring Code
#!ring -cgi
Load "weblib.ring"
Import System.Web
New NumbersController { start() }
50.10. Templates 433

Class NumbersController
MyHeader aNumbers
Func Start
MyHeader = New Header
{
cColumn1 = "Number" cColumn2 = "Square"
}
aNumbers = list(20)
for x = 1 to len(aNumbers)
aNumbers[x] = new number
{
nValue = x nSquare = x*x
}
next
cTemp = Template("mynumbers.html",self)
New Page
{
boxstart()
text( "Test Templates" )
newline()
boxend()
html(cTemp)
}
Class Header cColumn1 cColumn2
Class Number nValue nSquare
Screen Shot:
50.10. Templates 434

50.11 HTML Special Characters
The text() function display HTML special characters.
If you want to write html code, use the html() function.
50.11. HTML Special Characters 435

#!ring -cgi
Load "weblib.ring"
Import System.Web
New Page
{
boxstart()
text("HTML Special Characters")
newline()
boxend()
text('
<html>
<body>
<p> "hello world" </p>
</body>
</html>
')
}
Screen Shot:
50.12 Hash Functions
The Page User Interface
#!ring -cgi
Load "weblib.ring"
Import System.Web
New Page
{
boxstart()
text( "Hash Test")
newline()
boxend()
divstart([ :style = StyleFloatLeft() + StyleWidth("100px") ])
newline()
text( "Value : " )
newline() newline()
divend()
formpost("ex16.ring")
divstart([ :style = StyleFloatLeft() + StyleWidth("300px") ])
newline()
50.12. Hash Functions 436

textbox([ :name = "Value" ])
newline() newline()
submit([ :value = "Send" ])
divend()
formend()
}
Screen Shot:
The Response
#!ring -cgi
Load "weblib.ring"
Import System.Web
New Page
{
boxstart()
text( "Hash Result" )
newline()
boxend()
divstart([ :style = styleFloatLeft() + styleWidth("100%") ])
newline()
text( "Value : " + aPageVars["Value"] )
newline()
text( "MD5 : " + MD5(aPageVars["Value"]) )
newline()
text( "SHA1 : " + SHA1(aPageVars["Value"]) )
newline()
newline()
newline()
newline()
newline()
divend()
}
Screen Shot:
50.12. Hash Functions 437

50.13 Random Image
#!ring -cgi
Load "weblib.ring"
Import System.Web
cUploadPath = "C:/Apache2.2/htdocs/ringapp/upload/"
New Page
{
boxstart()
text( "Random Test")
newline()
boxend()
divstart([ :style = styleFloatLeft() + styleWidth("400px") ])
newline()
aList = dir(cUploadPath)
if len(aList) > 0
nIndex = random(len(aList))
if nindex = 0 nIndex = 1 ok
cItem = "upload/" + aList[nIndex][1]
newline()
image( [ :url = cItem , :alt = :image ] )
else
text("No images!") newline()
ok
divend()
}
Screen Shot:
50.13. Random Image 438

50.14 HTML Lists
The next example print a list contains numbers from 1 to 10
Then print a list from Ring List.
Finally we have a list of buttons and when we press on a button we get a message contains the clicked button number.
To start the list we uses the ulstart() function.
To end the list we uses the ulend() function.
We uses listart() and liend() to determine the list item.
#!ring -cgi
Load "weblib.ring"
Import System.Web
Func Main
New Page
{
ulstart([])
for x = 1 to 10
listart([])
text(x)
liend()
next
ulend()
list2ul(["one","two","three","four","five"])
ulstart([])
for x = 1 to 10
listart([])
50.14. HTML Lists 439

cFuncName = "btn"+x+"()"
button([ :onclick = cFuncName , :value = x])
script(scriptfuncalert(cFuncName,string(x)))
liend()
next
ulend()
}
Screen Shot:
50.14. HTML Lists 440

The Ring programming language version 1.8 book - Part 47 of 202

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The Ring programming language version 1.8 book - Part 47 of 202