Richard, Thank you for your kind response. I did find the SQLFORM example and got it to present the form and accept a file. I'm still struggling with an overall idea of how things work in Web2py (and perhaps the web itself). Is there a resource that clearly describes what happens when a page is accessed the order or processing what happens. I don't quite understand what Python code is triggered immediately, how messages or whatever are generated as someone interacts with the page, etc. This is a general question and I'm sure there are good recourses for me to read. What I'm trying to avoid is just assuming some "magic" happens.
Eric On Thursday, January 29, 2015 at 12:20:53 PM UTC-6, Richard wrote: > > Without the code from your controller and view it is more difficult to be > sure of what you are talking about exactly... > > I guess you have wrote a model, where you define a field of type upload, > then you want to understand how the upload of the file works and thing get > done... > > A simple question may be hard to draw, there is many code layer involves, > but book explanation about upload may be a good start for you to understand > : > > http://web2py.com/books/default/chapter/29/07/forms-and-validators#SQLFORM-and-uploads > > Web2py is a framework, so many things that you may use to write from > scratch in php are readily available in web2py without you to butter > recoding them, except if you need custom things not offers and even then, > there many ways to tweaks web2py default feature most of the time, passing > just more parameters... > > Richard > > On Wed, Jan 28, 2015 at 10:46 AM, Eric <eric....@gmail.com <javascript:>> > wrote: > >> Sorry if this is too basic a question. I very new to web programming and >> Web2py. I have written some desktop applications. Where I'm having trouble >> right now is understanding exactly how the Python code in Web2py interacts >> with the HTML. In my desktop GUI apps, a control like a button generates a >> trigger or callback which I can capture and execute code in response. I'm >> sure something like this is happening in web apps too, but I'm not quite >> getting how it works. For example, If I place the following tag in the >> HTML: >> <input type="file" name="fileID"> >> the page will display a button with which I can select a file with the >> browser's open file dialog. It will even show the file name on the page >> after selection. What I can't see is how I execute a Python function in >> response to this selection or how to get the filename to the function. I'm >> thinking I need some basic instruction in how web programming works so any >> references would be appreciated. I've been working my way through an >> on-line HTML tutorial, but it seems that javascript is also important. >> >> Thanks in advanced, >> >> Eric >> >> -- >> Resources: >> - http://web2py.com >> - http://web2py.com/book (Documentation) >> - http://github.com/web2py/web2py (Source code) >> - https://code.google.com/p/web2py/issues/list (Report Issues) >> --- >> You received this message because you are subscribed to the Google Groups >> "web2py-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to web2py+un...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
