Class: DatabaseValidations::UniquenessOptions

Inherits:
Object
  • Object
show all
Defined in:
lib/database_validations/validations/uniqueness_options.rb

Constant Summary collapse

CUSTOM_OPTIONS = 
i[where index_name].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(field, options, adapter) ⇒ UniquenessOptions

Returns a new instance of UniquenessOptions.



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# File 'lib/database_validations/validations/uniqueness_options.rb', line 7

def initialize(field, options, adapter)
  @field = field
  @options = options
  @adapter = adapter

  raise_if_unsupported_options!
  raise_if_index_missed! unless ENV['SKIP_DB_UNIQUENESS_VALIDATOR_INDEX_CHECK']
end

Instance Attribute Details

#field ⇒ Object (readonly)

Returns the value of attribute field.



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# File 'lib/database_validations/validations/uniqueness_options.rb', line 5

def field
  @field
end

Instance Method Details

#columns ⇒ Array<String>

Returns:

  • (Array<String>) 


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# File 'lib/database_validations/validations/uniqueness_options.rb', line 44

def columns
  @columns ||= Helpers.unify_columns(field, scope)
end

#handle_unique_error(instance) ⇒ Object 



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# File 'lib/database_validations/validations/uniqueness_options.rb', line 16

def handle_unique_error(instance)
  error_options = options.except(:case_sensitive, :scope, :conditions, :attributes, *CUSTOM_OPTIONS)
  error_options[:value] = instance.public_send(options[:attributes])

  instance.errors.add(options[:attributes], :taken, error_options)
end

#if_and_unless_pass?(instance) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/database_validations/validations/uniqueness_options.rb', line 33

def if_and_unless_pass?(instance)
  (options[:if].nil? || condition_passes?(options[:if], instance)) &&
    (options[:unless].nil? || !condition_passes?(options[:unless], instance))
end

#index_name ⇒ String|Symbol|nil

Returns:

  • (String|Symbol|nil) 


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# File 'lib/database_validations/validations/uniqueness_options.rb', line 64

def index_name
  @index_name ||= options[:index_name]
end

#key ⇒ String

Returns:

  • (String) 


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# File 'lib/database_validations/validations/uniqueness_options.rb', line 39

def key
  @key ||= index_name ? index_name.to_s : Helpers.generate_key(columns)
end

#message ⇒ String|nil

Returns:

  • (String|nil) 


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# File 'lib/database_validations/validations/uniqueness_options.rb', line 54

def message
  @message ||= options[:message]
end

#scope ⇒ Array<String|Symbol>

Returns:

  • (Array<String|Symbol>) 


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# File 'lib/database_validations/validations/uniqueness_options.rb', line 59

def scope
  @scope ||= Array.wrap(options[:scope])
end

#validates_uniqueness_options ⇒ Hash<Symbol, Object>

Returns:

  • (Hash<Symbol, Object>) 


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# File 'lib/database_validations/validations/uniqueness_options.rb', line 24

def validates_uniqueness_options
  where_clause_str = where_clause

  options.except(*CUSTOM_OPTIONS)
    .merge(allow_nil: true, case_sensitive: true, allow_blank: false)
    .tap { |opts| opts[:conditions] = -> { where(where_clause_str) } if where_clause }
end

#where_clause ⇒ String|nil

Returns:

  • (String|nil) 


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# File 'lib/database_validations/validations/uniqueness_options.rb', line 49

def where_clause
  @where_clause ||= options[:where]
end