Class: ChronoModel::Adapter::TSRange::Type

Inherits:
ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Range
  • Object
show all
Defined in:
lib/chrono_model/adapter/tsrange.rb

Overview

HACK: Redefine tsrange parsing support, as it is broken currently.

This self-made API is here because currently AR4 does not support open-ended ranges. The reasons are poor support in Ruby:

https://bugs.ruby-lang.org/issues/6864

and an instable interface in Active Record:

https://github.com/rails/rails/issues/13793
https://github.com/rails/rails/issues/14010

so, for now, we are implementing our own.

Constant Summary collapse

OID = 
3908

Instance Method Summary collapse

Instance Method Details

#cast_value(value) ⇒ Object 



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# File 'lib/chrono_model/adapter/tsrange.rb', line 22

def cast_value(value)
  return if value == 'empty'
  return value if value.is_a?(::Array)

  extracted = extract_bounds(value)

  from = Conversions.string_to_utc_time extracted[:from]
  to   = Conversions.string_to_utc_time extracted[:to  ]

  [from, to]
end

#extract_bounds(value) ⇒ Object 



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# File 'lib/chrono_model/adapter/tsrange.rb', line 34

def extract_bounds(value)
  from, to = value[1..-2].split(',')
  {
    from:          (value[1] == ',' || from == '-infinity') ? nil : from[1..-2],
    to:            (value[-2] == ',' || to == 'infinity') ? nil : to[1..-2],
  }
end