Help with building query functions in a web app - links to tutorials etc

[Matthew J Watts]

Hi there everyone!

I'm new to Web2py, i'm really enjoying using the framework so far. 

I am trying to rebuild a legacy database. 

I want to produce a web app that can query data from multiple tables using drop down boxes e.g. locations, species etc.. I want to be able to select info using drop down boxes,  Then i want to display the result and get the option to download them. 

Could someone please point me in the right direction in regards to a tutorials and methods

Thanks

matt

[Marlysson Silva]

There are the documentarion in section of DAL to declare and handle your data .. 

http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer

Basically you using the define_table and queries dal..

What you already done?

[Matthew J Watts]

Thanks Marlysson. I'm just going through that chapter now. What i really need to know is how I can trigger queries through various drop down boxes. For example, for one query, i need to create a cascading drop box that can select data sets at different taxonomic levels (animal kingdoms, family, species etc). 

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