scinote-web/db/migrate/20161123161514_create_samples_tables.rb

class CreateSamplesTables < ActiveRecord::Migration
  def change
    create_table :samples_tables do |t|
      t.jsonb :status, null: false,
              default: SampleDatatable::SAMPLES_TABLE_DEFAULT_STATE
      # Foreign keys
      t.references :user, null: false
      t.references :organization, null: false

      t.timestamps null: false
    end
    add_index :samples_tables, :user_id
    add_index :samples_tables, :organization_id

    User.find_each do |user|
      next unless user.organizations
      user.organizations.find_each do |org|
        org_status = SampleDatatable::SAMPLES_TABLE_DEFAULT_STATE.deep_dup
        next unless org.custom_fields
        org.custom_fields.each_with_index do |_, index|
          org_status['columns'] << { 'visible' => true,
                                     'search' => { 'search' => '',
                                                   'smart' => true,
                                                   'regex' => false,
                                                   'caseInsensitive' => true } }
          org_status['ColReorder'] << (7 + index)
        end

        SamplesTable.create(user: user, organization: org, status: org_status)
      end
    end
  end
end