I understood your second method, but I don't quite follow your first method.
Here is my code, would it be possible for you to demonstrate? My python knowledge is not all that great. http://paste.pocoo.org/show/286281/
@Andrei why are the methods Justin suggest better than using f.files.args = getMpegFiles() ? That seems pretty straight forward. From what I understand, not much, at least Justin's second method will completely reload the whole form every time the page loads, no?
On 11/04/2010 07:10 PM, Justin Davis wrote:
A couple ways to do this, but nothing that's really sanctioned by the webpy library. First, you can reach into the form and manipulate the dropdown in your page handler: def GET(self): f = stream_form() f.files.args = getMpegFiles() And then (obviously) redo this within the POST function. You could also set it as an instance member and put it in the initializer to reduce duplication. So, something like: class mypage: def __init__(self): self.form = stream_form() f.files.args = getMpegFiles() And then just access "self.form" in your handlers. This works because, unlike some other web frameworks such as cherrypy, webpy initializes the class on each request. They aren't long running singletons. The other way is to just define your form within the page handler at run time -- again this could go in the initializer: class mypage: def __init__(self): self.form = form.Form( form.Dropdown( 'input', [('0','Analog Tv'),('1', 'S-Video'),('2', 'Files')], description="Input Source:", value="1", onchange="showChannels()" ), form.Dropdown( 'channels', channelList(), description="Channel:", value="5" ), form.Dropdown( 'files', getMpegFiles(), description="Files" ) ) Hope that helps. Cheers, Justin On Nov 4, 3:15 pm, Pyther<[email protected]> wrote:Hello Here is my code:http://paste.pocoo.org/show/286254/ Basically I have this: form.Dropdown( 'files', getMpegFiles(), description="Files" ) Where getMpegFiles() returns a list of filenames. It seems as if the dropdown get rendered on the first run and then won't get updated until webpy restarts. How can I force the function to be called on every page load? Ideally I would like to allow users to add files to a directory and then the list get updated. Thanks, pyther
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