Question

Using RoR 3.0.7. (ruby 1.9.2)

I have a table books (model Book) with following fields:

book_id – int (not a primary key)

cover_pic – varchar

year – year

I need to delete * rows from DB with books_id = 1 for example.

Have tried:

1) Book.where(:book_id=>1).destroy (nothing)

2) Book.destroy( Book.where(:book_id=>1) ) (nothing)

3)
Book.where(:book_id=>1).each do |obj|

obj.destroy

end

NOTHING .. =(

what am I doing wrong?

thx.

UPD

worked fine delete_all

interesting info:
undefined method `eq' for nil:NilClass with rails 3 and ruby enterprise on ubuntu hardy

Answer 1

You can use either of these two:

This will fire all destroy callbacks

Book.destroy_all( :book_id => 1 ) 

This won’t

Book.delete_all( :book_id => 1 )