Class: Metka::Model

Inherits:
Module
  • Object
show all
Defined in:
lib/metka/model.rb

Instance Method Summary collapse

Constructor Details

#initialize(column:, **options) ⇒ Model

Returns a new instance of Model.



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# File 'lib/metka/model.rb', line 9

def initialize(column: , **options)
  @column = column
  @options = options
end

Instance Method Details

#included(base) ⇒ Object 



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# File 'lib/metka/model.rb', line 14

def included(base)
  column = @column
  parser = ->(tags) {
    @options[:parser] ? @options[:parser].call(tags) : Metka.config.parser.instance.call(tags)
  }

  search_by_tags = ->(model, tags, column, **options) {
    parsed_tag_list = parser.call(tags)
    if options[:without].present?
      model.where.not(::Metka::QueryBuilder.new.call(model, column, parsed_tag_list, options))
    else
      return model.none if parsed_tag_list.empty?
      model.where(::Metka::QueryBuilder.new.call(model, column, parsed_tag_list, options))
    end
  }

  base.class_eval do
    scope "with_all_#{column}", ->(tags) { search_by_tags.call(self, tags, column) }
    scope "with_any_#{column}", ->(tags) { search_by_tags.call(self, tags, column, { any: true }) }
    scope "without_all_#{column}", ->(tags) { search_by_tags.call(self, tags, column, { exclude_all: true, without: true }) }
    scope "without_any_#{column}", ->(tags) { search_by_tags.call(self, tags, column, { exclude_any: true, without: true }) }
  end

  base.define_method(column.singularize + '_list=') do |v|
    self.write_attribute(column, parser.call(v).to_a)
    self.write_attribute(column, nil) if self.send(column).empty?
  end

  base.define_method(column.singularize + '_list') do
    parser.call(self.send(column))
  end
end