# Query on observe field

**URL:** <https://www.ruby-forum.com/t/query-on-observe-field/118256>\
**Category:** Rails\
**Created:** [October 25, 2007, 6:25am UTC](https://www.ruby-forum.com/t/query-on-observe-field/118256 "2007-10-25T06:25:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![divyakgowda](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cc9497/32.png) [@divyakgowda](https://www.ruby-forum.com/u/divyakgowda)\
**Post date:** [October 25, 2007, 6:25am UTC](https://www.ruby-forum.com/t/query-on-observe-field/118256/1 "2007-10-25T06:25:08Z")

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Take one example where there will be 2 combo boxes. One for the project  
and another one for types. I have used observe field for types combo box  
which observes project field and updates div of types. Now i need to  
observe types field using observe field(should consider both project and  
types values) and update a div without using any submit button.How can i  
do this. Please help me out.