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Contents
module ForestLiana
class LeaderboardStatGetter < StatGetter
def initialize(resource, params)
@resource = resource
@params = params
@model_relationship = @resource.reflect_on_association(@params[:relationship_field]).klass
compute_includes()
@label_field = @params[:label_field]
@aggregate = @params[:aggregate].downcase
@aggregate_field = @params[:aggregate_field]
@limit = @params[:limit]
@groub_by = "#{@resource.table_name}.#{@label_field}"
end
def perform
result = @model_relationship
.joins(@includes)
.group(@groub_by)
.order(order)
.limit(@limit)
.send(@aggregate, @aggregate_field)
.map { |key, value| { key: key, value: value } }
@record = Model::Stat.new(value: result)
end
def compute_includes
@includes = ForestLiana::QueryHelper.get_one_association_names_symbol(@model_relationship)
end
def order
order = 'DESC'
# NOTICE: The generated alias for a count is "count_all", for a sum the
# alias looks like "sum_#{aggregate_field}"
if @aggregate == 'sum'
field = @aggregate_field.downcase
else
field = 'all'
end
"#{@aggregate}_#{field} #{order}"
end
end
end
Version data entries
94 entries across 94 versions & 1 rubygems