Company Model Thoughts for New Coast

gistfile1.txt

# app/models/company.rb

class Company < ActiveRecord::Base
  has_many :taggings
  has_many :tags, through: :taggings
  
  include TagMethods
end

# app/models/user.rb

class User < ActiveRecord::Base
  has_many :taggings
  has_many :tags, through: :taggings
  
  include TagMethods
end

# app/models/investor.rb

class Investor < ActiveRecord::Base
  has_many :taggings
  has_many :tags, through: :taggings
  
  include TagMethods
end

# app/models/concerns/tag_methods.rb

module TagMethods
  extend ActiveSupport::Concern

  module ClassMethods
    # tagged_with finds companies tagged with name
    def self.tagged_with(name)
      if name
        Tag.find_by_name!(name).companies
      else
        where(nil)
      end
    end

    # tag_counts spits out tag counts
    def self.tag_counts
      Tag.select("tags.*, count(taggings.tag_id) as count").joins(:taggings).group("taggings.tag_id")
    end

    #tag_list getter retrieves a company's tags and outputs them as a comma-separated string
    def tag_list
      tags.map(&:name).join(", ")
    end

    # tag_list setter takes in a comma-separated string of tags and assigns them to a company 
    def tag_list=(names)
      self.tags = names.split(",").map do |n|
        Tag.where(name: n.strip).first_or_create!
      end
    end
  end
end