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POHow can I use PHP to seed a dynamic table in a form with a users previously submitted answers?
 

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  1. POHow can I use PHP to seed a dynamic table in a form with a users previously submitted answers?
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    <p>It's a complicated title, I know. I think an example would best illustrate what I mean:</p> <p>Let's say I'm asking the user for their favorite Rock albums: albumName and albumArtist. I have a table with two columns that starts out with only one row. When the user clicks a button, a javascript function adds another row with the appropriate input fields in the appropriate cells. Then all of this data is stored in a MySQL table. This all works fine.</p> <p>When the user comes back, I'd like to re-render the table, inserting all of the user's submitted values. However, when I call the same JS function using PHP <code>&lt;echo&gt;</code> it renders above the form. How can I fix this? </p> <p>Sample code below: </p> <p>Javascript in head:</p> <pre><code>function addInputCell(newRow, cellNum, size, maxLength, fieldID, inputID, value) { var newCell = newRow.insertCell(cellNum); var elem = document.createElement('input'); elem.type = 'text'; elem.size = size; elem.maxlength = maxLength; elem.name = fieldID + inputID; elem.value = value; newCell.appendChild(elem); alert(elem.value); } function add3CellRow(fieldID, size1, maxlength1, size2, maxlength2, value) { var table = document.getElementById(fieldID); var lastRow = table.rows.length; if(lastRow &lt;22){ var newRow = table.insertRow(lastRow - 1); var cellLeft = newRow.insertCell(0); var textNode = document.createTextNode(lastRow - 1); cellLeft.appendChild(textNode); addInputCell(newRow, 1, size1, maxlength1, fieldID, 'Name[]', value); addInputCell(newRow, 2, size2, maxlength2, fieldID, 'Artist[]', value); } else { alert('You can only enter 20 values in this field'); } } </code></pre> <p>HTML in body:</p> <pre><code>&lt;table width="450" border="0" id='album' cellspacing="0" cellpadding="0"&gt; &lt;thead&gt; &lt;tr&gt; &lt;td width="3"&gt;&lt;/td&gt; &lt;td width="90%" align="center"&gt;&lt;b&gt;Album Name&lt;/b&gt;&lt;/td&gt; &lt;td width="10%" align="center"&gt;&lt;b&gt;Album Artist&lt;/b&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/thead&gt; &lt;tr&gt; &lt;td align="right"&gt;1&lt;/td&gt; &lt;td&gt;&lt;input type="text" size="20" name="albumName[]" maxlength="20" value='&lt;?php echo($onfile['albumName']);?&gt;'/&gt;&lt;/td&gt; &lt;td&gt;&lt;input type="text" size="20" name="albumArtist[]" maxlength="20" value='&lt;?php echo($onfile['albumArtist']);?&gt;'/&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;td align="right"&gt;&lt;input type="button" value="Add Concern" onClick="add3CellRow('album',20,20,20,20 ,'');"/&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </code></pre> <p>PHP in body:</p> <pre><code>&lt;?php echo ("&lt;script type='text/javascript'&gt;"); //Get the data in the rock table where userID matches $result = mysql_query("SELECT * FROM rock WHERE userID = '$_SESSION[userID]'"); while($onfile = mysql_fetch_array($result)) //Set the data into an array { echo ("add3CellRow('rock',20,20,20,20, '$onfileConcern[albumName]');"); } echo ("&lt;/script&gt;"); ?&gt; </code></pre>
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