ColdFusion Tutorial
Create Coldfusion Poll (Part two - The modules)
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Here you find the first part of the Poll System. |
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The voting module: |
This module has three main purposed:
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Check if the user already have voted, if yes send user automatically to show vote results. Else let the user vote.
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Check if user has selected a question, if not show vote again.
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After user has voted start the module for new voting results.
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<!--- Check if cookie is defined:
Yes: User have already voted, send user to show results.
No: User has not voted, let user vote. --->
<!--- User has voted, so send user to show vote results. --->
<cfif IsDefined("cookie.fusionpoll")>
<formaction="cf_poll.cfm?action=dsp_results" NAME="Add_Update" METHOD="post">
<input name="_" type="hidden" value="_">
<script language="JavaScript">
<!--
document.Add_Update.submit();
//--
</script>
</form>
<!--- End of the </form> that automatically send the visitor to show vote results. --->
</cfif>
<!--- </cfif> End of visitor have voted. --->
<!--- Start making tables for vote. --->
<!--- Query table questions and find the poll name. In this example there are only one poll, so QuestionID=1 --->
<cfquery name="Poll_Name" datasource="#request.main_access_DSN#">
SELECT * FROM cf_poll_questions WHERE QuestionID = #QuestionID#
</cfquery>
<!--- Query the table Answers (same ID) and get all the poll questions. --->
<cfset QuestionID = 1>
<cfquery name="Poll_Question" datasource="#request.main_access_DSN#">
SELECT * From cf_poll_answers WHERE QuestionID = #QuestionID# ORDER BY AnswerID ASC
</cfquery>
<!--- Find numbers of poll questions. --->
<cfset TotalRows = Poll_Question.RecordCount>
<!--- Write out our poll. --->
<form action="" method="post" name="Vote_Action">
<table width="<cfoutput>#vote_width#</cfoutput>" border="1" align="center" cellpadding="3" cellspacing="0" bordercolor="#000000" bgcolor="#6699CC" id="results" style="border-collapse: collapse">
<tr>
<!--- Write the name of the poll. --->
<td bgcolor="#000099"><font color="#FFFFFF"><b><cfoutput>#Poll_Name.Question#</cfoutput></b></font></td>
</tr>
<tr>
<td><table width="100%" border="0" cellspacing="0" cellpadding="0">
<br>
<!--- Start a query loop that write out the radio button and question. --->
<cfloop query="Poll_Question" startrow="1" endrow="#TotalRows#">
<tr>
<td><input name="AnswerID" type="radio" value="<cfoutput>#AnswerID#</cfoutput>">
<cfoutput>#Answer#</cfoutput><br>
<br></td>
</tr>
</cfloop>
<!--- End of the </cfloop> for poll radio buttons and questions. --->
</table></td>
</tr>
<tr>
<td bgcolor="#000099"><!--- (Radio button) Get visitors vote answer. --->
<div align="center">
<input name="vote_answer" type= "button"onClick="changeFormAction('cf_poll.cfm?action=act_results')" value="Vote">
</div></td>
</tr>
<tr>
<td bgcolor="#000099"><!--- Button for view vote results. --->
<div align="center">
<input name="Submit2" type= "button"onClick="changeFormAction('cf_poll.cfm?action=dsp_results')" value="View results">
</div></td>
</tr>
</table>
</form>
</cfcase>
<!--- End of the </cfcase> vote. ---> | |
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| Module: Display vote results. |
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This module displays the results of the vote.
If the user have not voted a vote button is displayed. |
<!--- Show vote results. --->
<cfcase value="dsp_results">
<!--- Find the poll name. --->
<cfquery name="Find_Poll_Name" datasource="#request.main_access_DSN#">
Select * FROM cf_poll_questions WHERE QuestionID = #QuestionID#
</cfquery>
<!--- Find number of poll questions. --->
<cfquery name="Number_of_questions" datasource="#request.main_access_DSN#">
SELECT * FROM cf_poll_answers WHERE QuestionID = #QuestionID#
</cfquery>
<!--- Remember the number of poll questions. --->
<cfset TotalRows = Number_of_questions.RecordCount>
<!--- Set the total vote answers like zero. --->
<cfset Tot_answers = 0>
<!--- Loop that counts the number of vote answers. --->
<cfloop query="Number_of_questions" startrow="1" endrow="#TotalRows#">
<!--- Find new total vote answers. --->
<cfset Tot_answers = Tot_answers + #Votes#>
</cfloop>
<!--- End of the </cfloop> that counts number of vote answers. --->
<table width="<cfoutput>#vote_width#</cfoutput>" border="1" align="center" cellpadding="3" cellspacing="0" bordercolor="#000000" bgcolor="#6699CC" id="results" style="border-collapse: collapse">
<!--- Output the poll name. --->
<tr>
<td bgcolor="#000099"><font color="#FFFFFF"><b><cfoutput>#Find_Poll_Name.Question#</cfoutput></b></font></td>
</tr>
<tr>
<td><table width="100%" border="0" cellspacing="0" cellpadding="0">
<!--- Loop through all the poll questions. --->
<cfloop query="Number_of_questions" startrow="1" endrow="#TotalRows#">
<tr>
<!--- Find the percent of the poll question answer. --->
<td><cfset Percent=Round((Votes / Tot_answers) * 100)>
<!--- Output the poll question. --->
<cfoutput>#Answer#</cfoutput>: <br>
<!--- Output the poll answer graphical bar. --->
<img align="middle" src="<cfoutput>#request.application.webroot#</cfoutput>/images/<cfoutput>#vote_results_img#</cfoutput>" width="<cfoutput>#Percent#</cfoutput>%" height="10"><br>
<!--- Output: number of votes and the vote percents. --->
<cfoutput>#Votes#</cfoutput> votes [<cfoutput>(#Percent#%</cfoutput>] </td>
</tr>
</cfloop>
<!--- End of the </cfloop> through all poll questions. --->
</table></td>
</tr>
<!--- Output the total numbers of votes. --->
<tr>
<td bgcolor="#000099"><font color="#FFFFFF"><b>Total: <cfoutput>#Tot_answers#</cfoutput> Votes.</b></font></td>
</tr>
<!--- The visitor has not voted, so we make a vote button. --->
<cfif NOT IsDefined("cookie.fusionpoll")>
<tr>
<formaction="cf_poll.cfm?action=vote" method="post" name="Vote_Action">
<td bgcolor="#000099"><div align="center">
<input name="Submit2" type="submit" value="Vote">
</div></td>
</form>
</tr>
</cfif>
<!--- End of </cfif> make vote button. --->
</table> | | |
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| Module: New vote results. |
| This module calculates the new vote results. |
<!--- The cookie is defined. Visitor has voted, so send visitor to show vote results. --->
<cfif IsDefined("cookie.fusionpoll")>
<formaction="cf_poll.cfm?action=dsp_results" NAME="Add_Update" METHOD="post">
<input name="_" type="hidden" value="_">
<script language="JavaScript">
<!--
document.Add_Update.submit();
//--
</script>
</form>
<!--- End of the form that send visitor automatically to show results, if visitor have voted. --->
</cfif>
<!--- End </cfif> for visitor that has voted. --->
<cfif IsDefined("Form.AnswerID")>
<!--- cftransaction:Groups multiple queries into a single unit.
The cftransaction tag provides commit and rollback processing. --->
<cftransaction>
<!--- Find the question visitor has voted. --->
<cfquery name="Last_vote" datasource="#request.main_access_DSN#">
SELECT * FROM cf_poll_answers WHERE AnswerID = #Form.AnswerID#
</cfquery>
<!--- Add visitors vote to the number of votes for this question. --->
<cfset New_Votes=Last_vote.Votes + 1>
<!--- Update our database with the new number. --->
<cfquery name="Update_Vote" datasource="#request.main_access_DSN#">
UPDATE cf_poll_answers SET Votes=#New_Votes# WHERE AnswerID=#AnswerID#
</cfquery>
</cftransaction>
<!--- Set the cookie. --->
<!--- Comment out 'set cookie' when you are testing. --->
<cfcookie name="fusionpoll" value="1" expires="never">
--->
<!--- Ok, user has voted. Send user automatically to show vote results. --->
<cflocationurl="cf_poll.cfm?action=dsp_results">
<cfelse>
<!--- If user has not selected a radio button, send user back to vote. --->
<cflocation url = "cf_poll.cfm?action=vote">
</cfif> | |
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ColdFusion Tutorial test
Create Coldfusion Poll (Part two - The modules)
No test is available or implemented for this ColdFusion Tutorial.
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