Class: Grapple::Components::KaminariInfobar

Inherits:
HtmlComponent show all
Defined in:
lib/grapple/components/kaminari_infobar.rb

Instance Attribute Summary

Attributes inherited from BaseComponent

#builder, #columns, #params, #records, #template

Instance Method Summary collapse

Methods inherited from BaseComponent

#initialize, setting

Constructor Details

This class inherits a constructor from Grapple::Components::BaseComponent

Instance Method Details

#render ⇒ Object 



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# File 'lib/grapple/components/kaminari_infobar.rb', line 9

def render
	estimate = false
	begin
		# total_count will throw an error if without_count is being used
		total_count = records.total_count
	rescue Exception => e
		estimate = true
		total_count = ActiveRecord::Base.connection.execute(
			"SELECT reltuples AS approximate_row_count FROM pg_class WHERE relname = '#{records.table_name}'"
		).first["approximate_row_count"].to_i
	end
	
	if total_count > 0
		offset = (records.current_page - 1) * records.current_per_page
		start_range = offset + 1
		end_range = [offset + records.current_per_page, total_count].min

		start_range = ActiveSupport::NumberHelper.number_to_delimited(start_range)
		end_range = ActiveSupport::NumberHelper.number_to_delimited(end_range)
		total = ActiveSupport::NumberHelper.number_to_delimited(total_count)

		html = sprintf((estimate ? estimate_message : message), start_range, end_range, total)
	else
		html = no_results_message
	end

	builder.row "<th colspan=\"#{num_columns}\">#{html}</th>", :class => 'infobar'
end