From: Matthew Margolis <mrmargolis@...>
Date: 2005-01-30T20:55:34+09:00
Subject: Re: Ruby CGI and blank form fields

Please ignore this message.  I sent it to the list almost two days ago 
and for some reason delivery was delayed a day.  I have figured out my 
problem.

Thank you,
Matthew Margolis

Matthew Margolis wrote:

> What would be the best way to check if a user enters a value into a form
> using ruby cgi?
>
> I have some code that should only run if the user is uploading a file
> but nil tests and key tests don't seem to prevent the code from
> executing even if they don't upload anything.
>
> two things I have tried(that didn't work) can be found below.  Perhaps I
> am missing something obvious?
>
> if cgi.has_key?('upload')
>  #stuff to do if there is an image to upload
> end
>
> unless cgi.params['upload'].first.nil?
>  #stuff to do if there is an image to upload
> end
>
>
> Here is the form itself
> --------------------
> <FORM  ENCTYPE="multipart/form-data" action="imageadmin.rb" 
> method="post">
> <%imageArray.length.times do |count|%>
>  <img src="<%=imageArray[count]%>">
>  <BR />
>  Comment:<input type="text" name="comment"
> value="<%=commentArray[count]%>">
>  <BR />
>  Number:<input type="text" name="order"
> value="<%=imageArray[count][0..2] %>">
>  <BR />
>  Delete:<input type="checkbox" name="delete"
> value="<%=imageArray[count]%>">
>  <BR />
> <%end%>
> <BR />
> <BR />
> <input type="file"  name="upload"> Comment:<input type="text" 
> name="uploadcomment" value="">
>
> <BR />
> <input type="submit" value="Submit">
> </FORM>
> ----------------------------
>
>
> Thank you,
> Matthew Margolis
>
>