Remove object from array without deleting it from database

Question

I'm having an issue where I just need to remove the duplicates from 2 array of active record objects. The only thing is it is removing it from the database only and I just need it removed from the array in this case. I followed this Remove object from an array of objects and also tried a few other things and they were able to remove it from memory and explicitly remove it from array and not the database but I'm not able to replicate it. Any suggestions would be great. Thanks all!

company_links       = CompanyLinkType.where(company_id: company_ids, contact_linktype_id: 3)
other_company_links = CompanyLink.where(company_id: company_ids, link_type: 'Twitter')


company_links.each do |company_link|
  other_company_links.each do |other_company_link|
    # checks if id and url match, need to remove obj from company_link array
    if other_company_link.company_id == company_link.company_id && other_company_link.url == company_link.contact_link_url
      company_link.delete
      Rails.logger.info"+++++++++DELETED++++++++++"
    end
  end
end

If both arrays have same type of objects you can OR two arrays like : company_links || other_company_links it will return same result as you require. — Muhammad Ali
– Muhammad Ali, Commented Mar 29, 2016 at 10:26

magni- · Accepted Answer · 2017-03-23 08:48:10Z

5

If you don't need the logging:

company_links = company_links.reject do |company_link|
    other_company_links.any? do |other_company_link|
        company_link.company_id == other_company_link.company_id && other_company_link.url == company_link.contact_link_url
    end
end

edited Mar 23, 2017 at 8:48

answered Mar 28, 2016 at 13:43

magni-

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3 Comments

Chris Over a year ago

Hey thanks, I'm getting this error though. Any ideas? NoMethodError: undefined method `delete_if' for #<CompanyLinkType::ActiveRecord_Relation:0x0000010b8e2d10>

magni- Over a year ago

Ahh, you'll need to use reject, since delete_if/reject! are only defined on Array, not Enumerable. I've updated my answer.

arjun Over a year ago

This returns an array not an ActiveRecord Collection

Wizard of Ogz · Accepted Answer · 2016-03-28 13:36:19Z

0

Change company_link.delete to company_links.delete(company_link)

answered Mar 28, 2016 at 13:36

Wizard of Ogz

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1 Comment

Chris Over a year ago

hey thanks, but it still removes the entry from the database.

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