Class: ForestAdminDatasourceMongoid::Utils::Pipeline::GroupGenerator

Inherits:
Object
  • Object
show all
Defined in:
lib/forest_admin_datasource_mongoid/utils/pipeline/group_generator.rb

Constant Summary collapse

AGGREGATION_OPERATION = 
{
  'Sum' => '$sum',
  'Avg' => '$avg',
  'Count' => '$sum',
  'Max' => '$max',
  'Min' => '$min'
}.freeze
GROUP_OPERATION = 
{
  'Year' => '%Y-01-01',
  'Month' => '%Y-%m-01',
  'Day' => '%Y-%m-%d',
  'Week' => '%Y-%m-%d'
}.freeze

Class Method Summary collapse

Class Method Details

.group(aggregation) ⇒ Object 



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# File 'lib/forest_admin_datasource_mongoid/utils/pipeline/group_generator.rb', line 20

def self.group(aggregation)
  [
    {
      '$group' => {
        _id: compute_groups(aggregation.groups),
        value: compute_value(aggregation)
      }
    },
    {
      '$project' => {
        '_id' => 0,
        'value' => '$value',
        'group' => compute_groups_projection(aggregation.groups)
      }
    }
  ]
end