Any idea on how to create a scope with OR to select more than one 'source'?

_list.html.erb

<%= f.label(:by_source)%>: <%= f.select(:with_source, @filterrific.select_options[:with_source],
               { include_hidden: false, include_blank: true },
               # { class: 'chosen-select' },
                multiple: true
               )
  %>

Assumption

By the serve log I can see that there is no 'OR' on the search query. How can one add it for my scope under the model?

loss_controller.rb

def index
    @filterrific = initialize_filterrific(
      Loss,
      params[:filterrific],
            :persistence_id => false,
      select_options: {
        with_source: LossSource.options_for_select,
        with_category: PartnerCategory.options_for_select
      }
    ) or return
    @losses = @filterrific.find.paginate(page: params[:page], per_page: 10).page(params[:page])
    respond_to do |format|
      format.html
      format.js
    end


    # End of Index
  end

loss_source.rb

class LossSource < ApplicationRecord
  def self.options_for_select
    order('LOWER(loss_sources.source)').map {|e| [e.source]}
  end
end

model.rb

#scopes
  filterrific(
    default_filter_params: { sorted_by: 'date_desc' },
    available_filters: [
      :search_query,
      :sorted_by,
      :search_for,
      :payed_at_gte,
      :payed_at_lt,
      :with_source,
      :with_category
    ]
  )
scope :with_category, lambda { |category| where('losses.category like ?', category)}

Server log

ActionView::Template::Error (PG::DatatypeMismatch: ERROR:  argument of WHERE must be type boolean, not type record
LINE 1: SELECT COUNT(*) FROM "losses" WHERE (losses.source like 'GoD...
                                            ^
: SELECT COUNT(*) FROM "losses" WHERE (losses.source like 'GoDaddy','Sendin Blue')):