Class: PgReports::Filter

Inherits:
Object
  • Object
show all
Defined in:
lib/pg_reports/filter.rb

Overview

Applies filtering logic to report data based on YAML configuration

Constant Summary collapse

OPERATORS = 
{
  "eq" => ->(a, b) { a == b },
  "ne" => ->(a, b) { a != b },
  "lt" => ->(a, b) { a < b },
  "lte" => ->(a, b) { a <= b },
  "gt" => ->(a, b) { a > b },
  "gte" => ->(a, b) { a >= b }
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Filter

Returns a new instance of Filter.



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# File 'lib/pg_reports/filter.rb', line 15

def initialize(config)
  @field = config["field"]
  @operator = config["operator"]
  @value_config = config["value"]
  @cast = config["cast"] || "string"
end

Instance Method Details

#apply(data, params) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/pg_reports/filter.rb', line 22

def apply(data, params)
  threshold = resolve_value(params)
  operator_fn = OPERATORS[@operator]

  raise ArgumentError, "Unknown operator: #{@operator}" unless operator_fn

  data.select do |row|
    field_value = cast_value(row[@field], @cast)
    operator_fn.call(field_value, threshold)
  end
end