Displaying 2 results from an estimated 2 matches for "m000625".
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1000625
2005 Apr 20
2
Has And Belongs To Many Validations
...e courses_teachers table as
teaching Spanish 101, if someone tries to add that same teacher/course
combination to the table again, it will not be allowed.
I thought I could use something like validates_uniqueness_of (
http://rails.rubyonrails.com/classes/ActiveRecord/Validations/ClassMethods.html#M000625
), but I''m not sure how to go about.
How do you do this?
Thanks,
kd
2006 Jun 15
3
Can I call MySql statements directly??
Hi All.
I have a mysql statement that I would really really like to call from my
Ruby program which goes like this:
SELECT a, b, DAYOFWEEK(date_time) as DOW,
HOUR(date_time) at hr,
AVG(x/y)
FROM records;
This is possible by creating a 3-dimentional array of a, b, date_time
containing x/y, and then finding averages and putting it into a
4-dimensional array of a, b, dow,