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The Ring programming language version 1.5.2 book - Part 41 of 181
1. Ring Documentation, Release 1.5.2
47.10 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
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
New NumbersController { start() }
47.10. Templates 375
2. Ring Documentation, Release 1.5.2
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:
47.10. Templates 376
3. Ring Documentation, Release 1.5.2
47.11 HTML Special Characters
The text() function display HTML special characters.
If you want to write html code, use the html() function.
47.11. HTML Special Characters 377
7. Ring Documentation, Release 1.5.2
47.14 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.
#!c:ringbinring.exe -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([])
47.14. HTML Lists 381
8. Ring Documentation, Release 1.5.2
cFuncName = "btn"+x+"()"
button([ :onclick = cFuncName , :value = x])
script(scriptfuncalert(cFuncName,string(x)))
liend()
next
ulend()
}
Screen Shot:
47.14. HTML Lists 382
9. Ring Documentation, Release 1.5.2
47.15 HTML Tables
In this example we will learn how to generate HTML tables using the tablestart(), tableend(), rowstart(), rowend()
,headerstart(), headerend(), cellstart() and cellend() functions.
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
Func Main
New Page
{
divstart([ :style = styledivcenter("400px","500px") ] )
style(styletable() + styletablerows("t01"))
tablestart([ :id = :t01 , :style = stylewidth("100%") ])
rowstart([])
headerstart([]) text("Number") headerend()
headerstart([]) text("square") headerend()
rowend()
for x = 1 to 10
rowstart([])
cellstart([]) text(x) cellend()
cellstart([]) text(x*x) cellend()
rowend()
next
tableend()
divend()
}
Screen Shot:
47.15. HTML Tables 383
10. Ring Documentation, Release 1.5.2
47.16 Gradient
In this example we will learn how to use the StyleGradient() function.
The function takes the style number as input (range from 1 to 60).
#!c:ringbinring.exe -cgi
Load "weblib.ring"
Import System.Web
Func Main
New Page
{
boxstart()
text("StyleGradient() Function")
boxend()
for x = 1 to 60
divstart([ :id = x , :align = "center" ,
:style = stylefloatleft() +
stylesize(string(100/60*6)+"%","50px") +
stylegradient(x) ])
h3(x)
divend()
next
}
Screen Shot:
47.16. Gradient 384