Adding to the session variable

[kenji776]

Yeah that is pretty much my questions. I am building a web playlist, and I need
a way for people to add songs to it. So what I have is a checkbox by every
song, and then the ones they check get added to a playlist session variable. My
question is, how do I ADD the form contents to the session variable, without
deleteing the old stuff. I have tried the following things

<cfset #session.playwhat# = #session.playwhat# + form.playwhat>
and
<cfset session.playwhat = Structappend(session.playwhat,form.playwhat)>

neither of those have worked. How to I do it?

[bill_doe]

Try:

<cfset #session.playwhat# = #session.playwhat# & form.playwhat>

[kenji776]

Thank that worked like a charm. Now another thing. What would be a good way to
keep boxes check that have already checked so they don't check then again. Like
say they chooose some songs from the F section, then go to the G section choose
some more, and then go back to F, I want the songs they choose in F to stay
checked. I know there is some kind of way to read from the session variable and
find out whether it should be checked or not. Here is the code I use to make
the checkboxes.



<form name="form" method="post">
<cfdirectory action="list" directory="d:\ftp\digital
swordsmen\downloads\music\" name="music_dump" filter="*.mp3">

<cfloop query="music_dump">
<cfif Left(#music_dump.name#, 1) EQ #url.letter#>
<cfoutput>

<table width="500" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="10"><a href="../Downloads/music/#music_dump.name#"
target="_blank"><img src="IMG/AlienDe0.gif" width="12" height="12"
border="0"></a></td>
<td width="450"><a
href="../Downloads/music/#music_dump.name#">#music_dump.name#</a></td>
<td width="15"><input type="checkbox" name="Playwhat" id="playwhat"
value="Songname_#music_dump.name#"> </td>
</tr>
</table>
</cfoutput>

<cfelse>

</cfif>
</cfloop>

<br>
<input name="Playsongs" type="submit" id="Playsongs" value="Play songs in
list">
<input name="addsongs" type="submit" id="addsongs" value="Add songs to list
and keep browsing">
</form>

[OldCFer]

If you use
<cfset #session.playwhat# = #session.playwhat# & form.playwhat>
How can you tell where the name of 1 song starts and another begins. I would
think
you should use a list.

<cfset session.playwhat = ListAppend(session.playlist,form.playlist)>

You shouldn't put pound signs on the left side of the cfset assignment.

[kenji776]

Hmm. I though the songs would be seperated by commas when stored in the session
variable like that. I mean i dumped the variable afterwards and i saw
song1.mp3,song2.mp3,song3.mp3 and so on, so like it does seperate with commas.
Does the listing way do something better? Not trying to like question you or
anything, just trying to figure out why that is the better way to do it. Thanks
for the help.

[OldCFer]

The only way you would get commas in there is if you have multiple fields named
form.playwhat.
<cfset x = "mary">
<cfset x = x & "jane">

produces "maryjane" not "mary,jane". "&" means put the two strings together,
not separate them with a comma.

[kenji776]

Wouldn't I want them seperated by commas so when i go to feed them into a media player I can use a comma delimited loop?