Look at the source code of this app:

http://www.web2py.com/appliances/default/show/63

It does what you ask (although for radio logs but you can change table
names and add fields) and it is very compact. Done by the book.

On Oct 18, 12:59 am, Markandeya <mrc55...@gmail.com> wrote:
> Dear Friends of Web2py,
> i am starting out with Web2py and Web Apps. I have a Parent Table of
> Service Calls and a child table of Visits. When making an edit form
> with both tables visible, one below the other, I need to be able to
> click on a Parent (Service Calls) table cell or row and  have the
> child (visits) table then filter or lookup the records for that Parent
> Service Call Record. Then when a child record is edited or added it
> needs to be shown in the child html table. This is a usual and
> recurring situation in many webapps or pages. What is the best
> practices way to do this? Bring in all 50-100 child records in a
> dictionary or array and then have a function that displays them in the
> Child Html table? or go to the database each time? And what event on
> the page or in the html table can be used to show when a Cell or Row
> is clicked by the user? Also if my Parent table has a field for number
> of calls, then with each added or deleted call record the parent  db
> and html table also has to be changed. How best to accomplish this.
>   Maybe there is tutorial or example or simple web2py program/webapp
> that might help.
>   Thanks for putting up with beginners ignorance. Any guidance will be
> welcome, Thanks Markandeya

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