Method: CustomTable::ApplicationHelper#custom_table_totals

Defined in:
app/helpers/custom_table/application_helper.rb

#custom_table_totals(collection, fields, totals = {}, fields_totals = {}) ⇒ Object 



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# File 'app/helpers/custom_table/application_helper.rb', line 119

def custom_table_totals collection, fields, totals = {}, fields_totals = {}

  out = {}
  totals = {} if totals.nil?
  fields_totals = {} if fields_totals.nil?

  fields.keys.each do |field|

    # We only work if field total is enabled explicitly with definition or totals
    next if !fields[field][:total] && !totals.has_key?(field)

    # Taking pre-defined value if available
    if !totals[field].nil?
      out[field] = totals[field]
    else
      model_class = collection.model
      # Trying to find helper first
      model_name = model_class.model_name.singular
      helper = "#{model_name}_#{field}_total"

      if self.class.method_defined?(helper)
        # Better use helper!
        out[field] = self.send(helper, collection.except(:limit, :offset, :order, :group))
      else
        if collection.respond_to?(:total_pages) && (!model_class.columns_hash[field.to_s].nil? || !fields[field][:total_scope].nil?) 
          # We can try to sum value from database

          if fields[field][:total_scope].nil?
            out[field] = collection.except(:limit, :offset, :order, :group).distinct(false).sum(field)
          else
            out[field] = collection.except(:limit, :offset, :order, :group).distinct(false).send(fields[field][:total_scope])
          end
        else
          # Taking simple summed value because all data is shown
          out[field] = fields_totals[field]
        end

      end

    end
  end

  out

end