Re: probs generating multiple drop down select lists within a single form

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Year shouldn't be a multiple

At the beginning of the second two selects:
<option value='blank'></option>

in your check:
if ( isset($_GET['state'] && $_GET['year']<>'blank' && $_GET['term']<>'blank')
   {
   //ok, they selected something in all three of those so lets run
some code here
   } else {
   //they didn't populate all three selects, spit an error message at them
   }




On Mon, 18 Oct 2004 07:00:36 -0700, bruce <bedouglas@xxxxxxxxxxxxx> wrote:
> the code is pretty much as i provided. the issue is that the query seems to
> insert a value into the query string for the select lists, even though i
> don't actually select an item.
> 
> i'm trying to figure out what has to happen to allow the select vars to be
> '' if the user hasn't selected anything.
> 
> this should be pretty straight forward, but i'm missing something...
> 
> thanks
> 
> -bruce
> 
> 
> 
> 
> -----Original Message-----
> From: Greg Donald [mailto:destiney@xxxxxxxxx]
> Sent: Sunday, October 17, 2004 6:14 PM
> To: php-general@xxxxxxxxxxxxx
> Subject: Re:  probs generating multiple drop down select lists
> within a single form
> 
> On Sun, 17 Oct 2004 17:23:14 -0700, bruce <bedouglas@xxxxxxxxxxxxx> wrote:
> > i have a prob/issue that i can't see.. i'm trying to geneate a page with
> > multiple lists so that the user has to select an item from all 3 lists in
> > order to access the next page...
> >
> > the 1st select/list allows the user to select either one or more items.
> the
> > 2nd/3rd select lists require the user to select only a single item from
> the
> > lists.
> >
> > ie:
> >    list1          list2        list3      >submitBTN<
> >
> > the user would select the items from all three lists, and hit the
> selectBTN,
> > to go to the next page...
> >
> > the prob that i'm having is that if i simply select item(s) from the 1st
> > list, then the code allows the user to continue...in other words, the app
> > looks as though the user has selected an item from the 2nd/3rd even though
> > they haven't been selected... in examining the code, it appears that the
> > last item in the 2nd/3rd lists is being somehow read/inserted into the
> > items, and are somehow included in the querystring...
> >
> > my code is:
> >
> >   /*
> >      generate the state list
> >   */
> >   echo"
> >      <div style='position:absolute; top:320px; left:50px; width:400px;'>
> >      <form name='test' method='get' action='$foo.php'>
> 
> Why $foo here?  Maybe not enough context for me to understand the
> reason, I dunno.
> 
> >      <div style='position:relative; top:10px; left:10px;'>
> >      <select multiple size=10 name='state[]'>
> >   ";
> >
> >      $state_query = "select * from stateTBL";
> >      $res = mysqli_query($link, $state_query);
> >      //$res = mysql_query($query);
> >
> >      //go ahead and process/populate the drop down
> >      //menu
> >      echo "<option value ='*'>All States</option>\n";
> >      while($row = mysqli_fetch_array($res, MYSQL_ASSOC))
> >      {
> >         echo "<option value
> > ='".$row['val']."'>".$row['name']."</option>\n";
> >
> >      }
> >
> >   echo"
> >      </select>
> >      </div>
> >   ";
> >
> >   /*
> >      generate the year list
> >   */
> >   echo"
> >      <div style='position:absolute; top:10px; left:240px; width:100px;'>
> >      <select  multiple size=1 name= 'year'>
> >   ";
> 
> Did you mean year[] here?  Otherwise why multiple?
> 
> >      $year_query = "select * from yearTBL";
> >      $res = mysqli_query($link, $year_query);
> >      //$res = mysql_query($query);
> >
> >      //go ahead and process/populate the drop down
> >      //menu
> >      while($row = mysqli_fetch_array($res, MYSQL_ASSOC))
> >      {
> >         echo "<option value
> > ='".$row['year']."'>".$row['year']."</option>\n";
> >      }
> >
> >   echo"
> >      </select>
> >      </div>
> >   ";
> >
> >   /*
> >      generate the terms list
> >   */
> >   echo"
> >      <div style='position:absolute; top:10px; left:325px; width:100px;'>
> >      <select name= 'term'>
> >   ";
> >
> >      $term_query = "select * from termTBL";
> >      $res = mysqli_query($link, $term_query);
> >      //$res = mysql_query($query);
> >
> >      //go ahead and process/populate the drop down
> >      //menu
> >      while($row = mysqli_fetch_array($res, MYSQL_ASSOC))
> >      {
> >         echo "<option value
> ='".$row['ID']."'>".$row['term']."</option>\n";
> >      }
> >
> >   echo"
> >      </select>
> >      </div>
> >   ";
> >
> >   $blah = $userdata['session_id'];
> >
> >   echo"
> >      <div style='position:relative; top:-150px; left:475px;'>
> >      <input type='submit' name='sub1' value='submit'>
> >      </div>
> >      <input type ='hidden' name='sid' value='$blah'>
> >      <input type='hidden' name='display' value='state'>
> >      </form>
> >      </div>
> >   ";
> >
> > in foo.php, i simply display the $_GET['state'],
> $_GET['year'],$_GET['term']
> > vars to see what they are...
> >
> > if i make all the select vars for the query terms arrays, it works as it
> > should, in that if all three lists aren't selected, then the user can't
> > proceed. however, if i use the select <select name = 'foo'> for the
> 2nd/3rd
> > lists, then the logic screws up...
> >
> > any idea why this is occuring....
> >
> > is there a better way/example of using multiple drop down lists within a
> > single form.....
> 
> Possibly.  I'd recommend using print_r($_GET) to see your form
> submissions.  To make sure your actually getting what you want to be
> getting.
> 
> > any thoughts/comments/pointers would be helpful.. i'm pretty sure that the
> > issue/prob is rather straight forward/simple, but i can't see it right
> > now....
> 
> Not sure exactly what is broken, is that your entire script as posted?
> 
> --
> Greg Donald
> Zend Certified Engineer
> http://gdconsultants.com/
> http://destiney.com/
> 
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