See
http://stackoverflow.com/questions/8146260/best-practice-for-populating-dropdown-based-on-other-dropdown-selection-in-web2p/8152910#8152910
.
On Tuesday, October 29, 2013 8:39:20 AM UTC-4, aabhas majumdar wrote:
>
> I have to create a form which has 2 fields source and destination . I have
> a table Location1 in db.py with source and destination .
> I wanted to implement the view such that if i select a source from the
> drop down list of source then in destination only those destinations will
> be in drop down list whose source in database is the source entered.
> Example:
> database:
> SOURCE - DESTINATION
> USA - INDIA
> USA - JAPAN
> INDIA - CHINA
> JAPAN - CHINA
>
> now in views if i select USA in SOURCE from dropdown list
> of("USA","INDIA","JAPAN") my destination dropdown list should contain only
> ("INDIA","JAPAN")
>
>
--
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