Remove row from active record array

Rails
1

hi,

I have the following scenario within my rails code, where
@manufacturers is an activerecord object with many cars

@manufacturers.each do |manufacturer|
manufacturer.cars.each do |car|

end
end

with the above i’m carrying out a number of tests against the car, and
if it fails I want to remove that car from the array, but I don’t want
to destroy it, e.g. I don’t want to delete it from the database.
Unfortunately I can’t select the cars I want from SQL so I’ve got to
do it this way.

Can anyone help?

thanks

2

hiddenhippo wrote:

end

@manufacturers.each do |manufacturer|
manufacturer.cars.map! do |car|
lambda {
return car if car “meets whatever conditions”
}
end
end

That will build you a new array of cars, inside the lambda block you can
do all of your testing and return the car object if it meets your
conditions.

3

thank you very much for that

On Jan 18, 4:35 pm, Russell McConnachie [email protected]

4

Russell McConnachie wrote:

end
end

@manufacturers.each do |manufacturer|
manufacturer.cars.map! do |car|
lambda {
return car if car “meets whatever conditions”
}
end
end
I forgot the .call on the end of the lambda {} statement, it should
appear as:

lambda {
return car if car “meets whatever conditions”
}.call