Re: Dropdown Building Function
| From: | Jack Jackson | Date: | Fri, 29 Jul 2005 22:55:17 +0000 |
| Subject: | Re: Dropdown Building Function | ||
| References: | 1 2 3 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-219646@lists.php.net to get a copy of this message | ||
Kristen G. Thorson wrote:
I'm not 100% sure where you're saying you're stuck, but I think you're trying to do with one query what you will probably find is best to do with several. Hopefully the following will help some:
//first get all the questions
$sql = "select * from questions";
$result = mysql_query( $sql );
//now one-by-one go through the questions
while( $row = mysql_fetch_row( $result ) {
//create the drop down box for THIS question
echo '<select name="'.$row['question_text'].'">';
//get all of the answers for THIS question
$ans_sql = "select * from answers where question_id=".$row['question_id'];
$ans_result = mysql_query( $ans_sql );
while( $ans_row = mysql_fetch_row( $ans_result ) ) {
//list the answers for THIS question
echo '<option value="'.$ans_row['answer_id'].'">'.$ans_row['answer_text'].'</option>';
}
echo '</select>';
}
outputs:
<select name="question1">
<option value="1">answer 1</option>
<option value="2">answer 2</option>
<option value="3">answer 3</option>
<select name="question2">
<option value="1">answer 1</option>
<option value="2">answer 2</option>
<option value="3">answer 3</option>
<option value="4">answer 4</option>
<option value="5">answer 5</option>
It requires numerous DB calls, but I believe in most cases, it's still better than what you'd have to do otherwise (create some arrays and do some sorting, etc.). That is, if I've understood what you need ;)
And it did!!
//first get all the questions
$sql = "select * from questions ORDER BY q_cat";
$result = mysql_query($sql);
//now one-by-one go through the questions
while($row = mysql_fetch_assoc($result)) {
//if the form has been submitted, and the question unanswered
//highlight this whole question and answer block in red.
if (sizeof($message[$row['q_name']])){
echo "<div class='error'>";
}
//State the question
echo "<div class='question'>";
echo $row['q_text'] . "</div>";
echo "\n\n";
echo " <div class='answer'>";
echo "\n";
//Create the dropdown for the answers
echo ' <select name="' . $row['q_name'] . '">';
echo "\n";
//get all of the answers for THIS question
$ans_sql = "select * from answers where answers.q_id=" . $row['q_id'];
$ans_result = mysql_query($ans_sql);
echo " <option value=\"\">Select from this list</option>\n";while($ans_row = mysql_fetch_assoc($ans_result)) { //list the answers for THIS question
echo " <option ";echo "value=\"" . $ans_row['a_id'] . "\""; if ($row['q_name'] == $ans_row['a_id']) { echo " selected"; } echo ">" . $ans_row['a_answer'] . "</option>"; echo "\n"; } echo ' </select>' . "\n" . ' </div>' . "\n\n"; //If there *was* an error div, close it if (sizeof($message[$row['q_name']])){ echo "</div><!--/error-->"; } } Thanks so much!