how to access database using python code?

Question

I want to access database and get the name from a table to check if the name exist or not.

I know that I need to override the create function but I have no idea for what should I put inside the function

Also, i'd like to ask how to pop up en error message like the validate checking when the name is existed

Deepa Venkatesh · Answer

you can use *cursor*(or cr) present in a method..

almost all ORM methods will have these paramaters: /*self, cr, uid*/

so one can use cr, which is nothing but cursor paramater used to deal with database...

/Example:/ cr.execute("select * from res_partner")

And to do validation: you can set *_sql_constraints* in your object

Hint: use Ctrl + H to search in you the addons, if you are using EDI like eclipse/aptana studio

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