Re: [PHP] populate form input option dropdown box from existing data

Ashley Sheridan wrote:
> On Tue, 2009-06-16 at 15:48 -0400, PJ wrote:
>   
>> jenai tomaka wrote:
>>     
>>> You can try like this,
>>>
>>> $row = stored data;
>>>  
>>> and write the options like this
>>> <option value="id" (id == $row ? "selected" : "") >xxxx</option>
>>>
>>>
>>> Yuri Yarlei.
>>>
>>> <http://brasil.microsoft.com.br/IE8/mergulhe/?utm_source=MSN%3BHotmail&utm_medium=Tagline&utm_campaign=IE8>
>>>       
>> Yuri, I'm still "wet behind the ears" on this so I don't quite
>> understand what you mean by "stored data" ;  and what does the "id"
>> (id==$row?"selected":"") mean?
>> I get the idea that this might be translated into something in the code
>> I have dreamed up - further down.
>>
>> echo "<option value=", $row['id'], ">", $row['category'], "</option><br />";
>> I suppose that I must add an if clause to insert the selected option for
>> the categories that are relevant...
>>
>>
>> Gentlemen,
>> I have been diligently studying all this and have just returned my
>> attention to the list, so I've read the replies/inputs and now comment:
>>
>> BTW, I had some problems with the multiple statement - it does not take
>> any parameters; it must simply be stated multiple without quotes.
>>
>> Now, I was happy to learn that it is simpler to populate the insert new
>> books page dynamically from the db. Much shorter & neater.
>> It looks to me like the best solution for the edit page is close to what
>> Yuri suggests.
>> Since the edit page is very similar to the insert new books page, I
>> merely need to populate the Select options box slightly differently.
>> This is the code to populate the insert page:
>> <select name="categoriesIN[]" multiple size="8">
>> <?php
>> $sql = "SELECT * FROM categories"; 
>>   if ( ( $results = mysql_query($sql, $db) ) !== false ) {
>>         while ( $row = mysql_fetch_assoc($results) ) {
>>             echo "<option value=", $row['id'], ">", $row['category'],
>> "</option><br />";
>>             }
>>         }
>> ?>
>> </select>
>>
>> The problem nowis to find a way to add a conditional clause above that
>> will insert the option="selected" in the output.
>> The input for this comes from:
>> // do categories
>> $sql = "SELECT id, category FROM categories, book_categories
>>         WHERE book_categories.bookID = $idIN &&
>> book_categories.categories_id = categories.id";;
>>     if ( ( $results = mysql_query($sql, $db) ) !== false ) {
>>         while ( $row = mysql_fetch_assoc($results) ) {
>>             echo$row['id'], "<br />";
>>         }
>>     }
>>
>> This may return any number of category ids so the problem is to figure
>> out a way to pass the ids from the above code to the right ids in the
>> first code above.
>> How & what do I search to match the two ids?
>>
>> -- 
>> Hervé Kempf: "Pour sauver la planète, sortez du capitalisme."
>> -------------------------------------------------------------
>> Phil Jourdan --- [email protected]
>>    http://www.ptahhotep.com
>>    http://www.chiccantine.com/andypantry.php
>>
>>
>>     
> <option value="id" (id == $row ? "selected" : "") >xxxx</option> is
> pretty bad HTML, as attributes should always have a value. Personally, I
> do something like this as it tends not to confuse the code too much
>
> $selected = ($id == $row)?'selected="selected"':'';
> print "<option value=\"$id\" $selected >xxxx</option>";
>   
I was unable to get any of the suggestions to work, except in_array().
However, the selected item refuses to become highlighted.
code:
<select name="categoriesIN[]" multiple size="8">
<?php
$sql = "SELECT * FROM categories";
        //$selected = ($id == $row)?'selected="selected"':'';
  if ( ( $results = mysql_query($sql, $db) ) !== false ) {
        while ( $row = mysql_fetch_assoc($results) ) {
            if (in_array($row['id'], $ccc)) {
              echo "<option value=", $row['id'], " selected >",
$row['category'], "</option><br />";
                  }
              else echo "<option value=", $row['id'], ">",
$row['category'], "</option><br />";
            }
        }
?>
    </select>
I can't find anything that explains why the selected item is not
highlighted.

-- 
Hervé Kempf: "Pour sauver la planète, sortez du capitalisme."
-------------------------------------------------------------
Phil Jourdan --- [email protected]
   http://www.ptahhotep.com
   http://www.chiccantine.com/andypantry.php