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How do you use multiple variables in loops?

Posted on 2008-10-22
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Last Modified: 2012-05-05
I have a quiz with the information (ID [the auto-incremented primary], question, a [answer a], b [answer b], c [answer c], d [answer d], and correct [the correct answer; a, b, c, or d]) in a database. To output the quiz I used a simple loop over a query that gets all the questions:

<cfset i=1>
<table>
      <cfloop query="qGetQuestions">
            <tr>
                  <td>#i#.</td>
                  <td>#question#<br />
                        <table>
                              <tr>
                                    <td><input name="#ID#" type="radio" value="a"></td>
                                    <td>#a# </td>
                              </tr>
                              <tr>
                                    <td><input name="#ID#" type="radio" value="b"></td>
                                    <td>#b# </td>
                              </tr>
                              <tr>
                                    <td><input name="#ID#" type="radio" value="c"></td>
                                    <td>#c#</td>
                              </tr>
                              <tr>
                                    <td><input name="#ID#" type="radio" value="d"></td>
                                    <td>#d#</td>
                              </tr>
                        </table></td>
                  </tr>
            <cfset i = i + 1>
                  </cfloop>
                  <tr>
                        <td></td>
                        <td><input type="submit" name="Submit" value="Submit" /></td>
                  </tr>
</table>

Not a problem. The problem comes when trying to score. If I loop through the query again, I need to check and see if #qGetQuestions.correct# is equal to #FORM.#ID##, which is obviously not a valid variable. How do I go about this, or have I been going about the test setup incorrectly from the start?

Thanks!
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Question by:SiobhanElara
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LVL 63

Accepted Solution

by:
Zvonko earned 500 total points
ID: 22777786
Check this:
<cfset i=1>
<cfset Correct=0>
<cfset subValue="" >
<table>
 <cfloop query="qGetQuestions">
  <tr>
   <td>#i#.</td>
   <td>#question#<br />
   <cfif IsDefined("FORM.FieldNames") >
     <cfset subValue=FORM[ID] >
   </cfif>
   <table>
   <tr>
    <td><input name="#ID#" type="radio" value="a" <cfif subValue EQ "a">CHECKED</cfif> ></td>
    <td>#a# </td>
   </tr>
   <tr>
    <td><input name="#ID#" type="radio" value="b" <cfif subValue EQ "b">CHECKED</cfif> ></td>
    <td>#b# </td>
   </tr>
   <tr>
    <td><input name="#ID#" type="radio" value="c" <cfif subValue EQ "c">CHECKED</cfif> ></td>
    <td>#c#</td>
   </tr>
   <tr>
    <td><input name="#ID#" type="radio" value="d" <cfif subValue EQ "d">CHECKED</cfif> ></td>
    <td>#d#</td>
   </tr>
   </table></td>
  </tr>
  <cfset i = i + 1>
  <cfif IsDefined("FORM.FieldNames") >
    <cfif FORM[ID] EQ answer >
      <cfset Correct=Correct+1>
    </cfif>
  </cfif>
 </cfloop>
 <cfif IsDefined("FORM.FieldNames") >
   <tr><td colspan="2">Correct answers: #Correct#</td</tr>
 </cfif>
 <tr>
 <td></td>
 <td><input type="submit" name="Submit" value="Submit" /></td>
 </tr>
</table>

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Author Comment

by:SiobhanElara
ID: 22778287
Thanks for your response! While it does appear that the above code would tell you how many questions were correct, it doesn't seem to tell them *which* ones they got right and what the correct answer would be. (I should have specified that was what I was going for but was hoping to be able to figure that part out if the double variable thing got explained.) What I would like it to do, in the end, is to say (using explanatory variable names for clarity):

You got #numberCorrect# of #totalQuestions# questions correct!

1. #question#
    The correct answer is #textOfCorrectAnswer#. You answered #textOfExamAnswer#.

Etc.
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LVL 63

Expert Comment

by:Zvonko
ID: 22779082
Open a new question please for that formating.
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