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# frozen-string-literal: true
module Sequel
module Plugins
# The auto_validations_constraint_validations_presence_message plugin provides
# integration for the auto_validations and constraint_validations plugins in
# the following situation:
#
# * A column has a NOT NULL constraint in the database
# * A constraint validation for presence exists on the column, with a :message
# option to set a column-specific message, and with the :allow_nil option set
# to true because the CHECK constraint doesn't need to check for NULL values
# as the column itself is NOT NULL
#
# In this case, by default the validation error message on the column will
# use the more specific constraint validation error message if the column
# has a non-NULL empty value, but will use the default auto_validations
# message if the column has a NULL value. With this plugin, the column-specific
# constraint validation error message will be used in both cases.
#
# Usage:
#
# # Make all model subclasses use this auto_validations/constraint_validations
# # integration (called before loading subclasses)
# Sequel::Model.plugin :auto_validations_constraint_validations_presence_message
#
# # Make the Album class use this auto_validations/constraint_validations integration
# Album.plugin :auto_validations_constraint_validations_presence_message
module AutoValidationsConstraintValidationsPresenceMessage
def self.apply(model)
model.plugin :auto_validations
model.plugin :constraint_validations
end
def self.configure(model, opts=OPTS)
model.send(:_adjust_auto_validations_constraint_validations_presence_message)
end
module ClassMethods
Plugins.after_set_dataset(self, :_adjust_auto_validations_constraint_validations_presence_message)
private
def _adjust_auto_validations_constraint_validations_presence_message
if @dataset &&
!@auto_validate_options[:not_null][:message] &&
!@auto_validate_options[:explicit_not_null][:message]
@constraint_validations.each do |array|
meth, column, opts = array
if meth == :validates_presence &&
opts &&
opts[:message] &&
opts[:allow_nil] &&
(@auto_validate_not_null_columns.include?(column) || @auto_validate_explicit_not_null_columns.include?(column))
@auto_validate_not_null_columns.delete(column)
@auto_validate_explicit_not_null_columns.delete(column)
array[2] = array[2].merge(:allow_nil=>false)
end
end
end
end
end
end
end
end
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