Class: ForestLiana::PieStatGetter

Inherits:
Object
  • Object
show all
Defined in:
app/services/forest_liana/pie_stat_getter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(resource, params) ⇒ PieStatGetter

Returns a new instance of PieStatGetter.



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# File 'app/services/forest_liana/pie_stat_getter.rb', line 5

def initialize(resource, params)
  @resource = resource
  @params = params
end

Instance Attribute Details

#record ⇒ Object

Returns the value of attribute record.



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# File 'app/services/forest_liana/pie_stat_getter.rb', line 3

def record
  @record
end

Instance Method Details

#perform ⇒ Object 



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# File 'app/services/forest_liana/pie_stat_getter.rb', line 10

def perform
  if @params[:group_by_field]
    value = @resource
    conditions = []
    filter_operator = ''

    if @params[:filterType] && @params[:filters]
      filter_operator = " #{@params[:filterType]} ".upcase

      @params[:filters].try(:each) do |filter|
        operator, filter_value = OperatorValueParser.parse(filter[:value])
        conditions <<  OperatorValueParser.get_condition(filter[:field],
          operator, filter_value, @resource)
      end
    end

    # NOTICE: The generated alias for a count is "count_all", for a sum the
    #         alias looks like "sum_#{aggregate_field}"
    field = 'all'
    if @params[:aggregate].downcase == 'sum'
      field = @params[:aggregate_field].downcase
    end

    value = value
      .unscoped
      .where(conditions.join(filter_operator))
      .group(@params[:group_by_field])
      .order("#{@params[:aggregate].downcase}_#{field} DESC")
      .send(@params[:aggregate].downcase, @params[:aggregate_field])
      .map do |k, v|
        # NOTICE: Display the enum name instead of a integer if "enum" type
        if @resource.respond_to?(:defined_enums) &&
           @resource.defined_enums.has_key?(@params[:group_by_field])
          k = @resource.defined_enums[@params[:group_by_field]].invert[k]
        end

        { key: k, value: v }
      end

    @record = Model::Stat.new(value: value)
  end
end