Class: ForestLiana::PieStatGetter

Inherits:
StatGetter show all
Includes:
AggregationHelper
Defined in:
app/services/forest_liana/pie_stat_getter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from AggregationHelper

#aggregation_alias, #aggregation_sql, #resolve_field_path

Methods inherited from StatGetter

#get_resource, #initialize, #validate_params

Methods inherited from BaseGetter

#get_collection, #get_resource, #includes_for_serialization

Constructor Details

This class inherits a constructor from ForestLiana::StatGetter

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 4

def record
  @record
end

Instance Method Details

#groupByFieldName ⇒ Object 



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# File 'app/services/forest_liana/pie_stat_getter.rb', line 46

def groupByFieldName
  resolve_field_path(@params[:groupByFieldName])
end

#perform ⇒ Object 



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# File 'app/services/forest_liana/pie_stat_getter.rb', line 6

def perform
  if @params[:groupByFieldName]
    timezone_offset = @params[:timezone].to_i
    resource = optimize_record_loading(@resource, get_resource)

    filters = ForestLiana::ScopeManager.append_scope_for_user(@params[:filter], @user, @resource.name, @params['contextVariables'])

    unless filters.blank?
      resource = FiltersParser.new(filters, resource, @params[:timezone], @params).apply_filters
    end

    aggregation_type = @params[:aggregator].downcase
    aggregation_field = @params[:aggregateFieldName]
    alias_name = aggregation_alias(aggregation_type, aggregation_field)

    resource = resource
                 .group(groupByFieldName)
                 .order(Arel.sql("#{alias_name} DESC"))
                 .pluck(groupByFieldName, Arel.sql("#{aggregation_sql(aggregation_type, aggregation_field)} AS #{alias_name}"))

    result = resource.map do |key, value|
        # NOTICE: Display the enum name instead of an integer if it is an
        #         "Enum" field type on old Rails version (before Rails
        #         5.1.3).
        if @resource.respond_to?(:defined_enums) &&
          @resource.defined_enums.has_key?(@params[:groupByFieldName]) &&
          key.is_a?(Integer)
          key = @resource.defined_enums[@params[:groupByFieldName]].invert[key]
        elsif @resource.columns_hash[@params[:groupByFieldName]] &&
          @resource.columns_hash[@params[:groupByFieldName]].type == :datetime
          key = (key + timezone_offset.hours).strftime('%d/%m/%Y %T')
        end

        { key: key, value: value }
      end

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