pluck scope nil value in Ruby on rails

Question

Hi can someone tell me what went wrong here?

@organizations_of_user = user.memberships.verified.pluck :organization_id
@organizations_of_user << nil
@permitted_category_ids= Category.where(......, organization_id:@organizations_of_user)

seems like the @organizations_of_user has some problems. This code is written by one of my previous colleague. I don't know what exactly this << nil is doing, but somehow, without this, the code crashes. But with this, the Category scope will only display organization_id : nil.

does someone have any idea?

Thanks a lot!

What is the error message when the code is run without `<< nil` ? — Ryenski, Jul 15 '15 at 22:04

score 0 · Accepted Answer · answered Jul 15 '15 at 21:58

0

@organizations_of_user is an array

@organizations_of_user = user.memberships.verified.pluck(:organization_id) #Extracts organization_ids in an array [1,2,3...]
@organizations_of_user << nil # Adds nil to the array [1,2,3,nil...]
@permitted_category_ids= Category.where(......, organization_id:@organizations_of_user) #Search for Categories with organization_ids inside the array [1,2,3,nil...]. (nil extracts Categories without an organization_id)

answered Jul 15 '15 at 21:58

Erick Eduardo Garcia

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thanks for the explanation, that's really helpful!! looks like `user.memberships.verified.pluck(:organization_id)` returns nothing. I don't know what's wrong with the user.memberships. Normally, it's just `user.memberships.pluck`, I'm not sure what's the `verified` is doing here, or something wrong with the memberships policy? – MangooSaSa Jul 17 '15 at 10:01
I check the code of membership: `validates_uniqueness_of :user_id, scope: :organization_id scope :verified, -> {where("verified_at IS NOT NULL")}` the attribute `verified_at` is null all the time, which is not created properly. Thanks for the help, Erick! – MangooSaSa Jul 17 '15 at 11:24

pluck scope nil value in Ruby on rails

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