Class: DatabaseConsistency::Comparators::PresenceComparator

Inherits:
BaseComparator
  • Object
show all
Defined in:
lib/database_consistency/comparators/presence_comparator.rb

Overview

The comparator class for {ActiveModel{ActiveModel::Validations{ActiveModel::Validations::PresenceValidator}

Constant Summary collapse

WEAK_OPTIONS = 
%i[allow_nil allow_blank if unless].freeze
CONSTRAINT_MISSING =

Message templates

'should be required in the database'.freeze
POSSIBLE_NULL = 
'is required but possible null value insert'.freeze

Instance Attribute Summary

Attributes inherited from BaseComparator

#column, #model, #validator

Instance Method Summary collapse

Methods inherited from BaseComparator

compare, #initialize, #report

Constructor Details

This class inherits a constructor from DatabaseConsistency::Comparators::BaseComparator

Instance Method Details

#compare ⇒ Object

Table of possible statuses

allow_nil/allow_blank/if/unless database status
at least one provided required fail
at least one provided optional ok
all missed required ok
all missed optional fail 


17
18
19
20
21
22
23
24
25
26
27
28
 
# File 'lib/database_consistency/comparators/presence_comparator.rb', line 17

def compare
  can_be_null = column.null
  has_weak_option = validator.options.slice(*WEAK_OPTIONS).any?

  if can_be_null == has_weak_option
    result(:ok, message)
  elsif can_be_null
    result(:fail, message(CONSTRAINT_MISSING))
  else
    result(:fail, message(POSSIBLE_NULL))
  end
end