Question

• unique_code belongs_to :community
• unique_code belongs_to :user
• user has_many :unique_codes
• community has_many :unique_codes

I want to fetch all the unique_codes just like this below

@unique_codes = @user.unique_codes
@unique_codes_count = unique_codes.count

However, there’s sometimes community which is already deleted.
Assume the user had 10 unique_codes, then one community is already deleted.

@unique_codes_count returns 10 but I want 9 which is the number of unique_codes of active communities.

How can I?

Answer 1

Try:

UniqueCode Model:

class UniqueCode  
    belongs_to :community, :dependent => :destroy
end

Controller Code:

   def method_name
     count = 0
     @unique_codes.each do |code|
        if code != nil
          count = count + 1
        end
     end
     puts "This count is giving me the number of unique codes which are not deleted for active community"+count.to_s
   end

The count will return the count of rows that do not have null values.