Module: ActivemodelFlags::HasFlags::ClassMethods

Defined in:
lib/activemodel_flags/has_flags.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.flags_used ⇒ Object 



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# File 'lib/activemodel_flags/has_flags.rb', line 40

def self.flags_used
  all_flags = {}

  self.that_have_any_flags.each do |obj|
    obj.flags.keys.each do |key|
      all_flags[key] = true unless all_flags[key]
    end
  end

  all_flags.keys
end

.reset_all_flags! ⇒ Object 



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# File 'lib/activemodel_flags/has_flags.rb', line 64

def self.reset_all_flags!
  self.update_all(flags: '{}')
end

.reset_flags!(flag) ⇒ Object 



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# File 'lib/activemodel_flags/has_flags.rb', line 52

def self.reset_flags!(flag)
  self.update_all("flags = REPLACE(\
                             REPLACE(\
                               REPLACE(\
                                 REPLACE(
                                  flags, '\"#{flag}\":false', ''\
                                 ), '\"#{flag}\":false,', ''\
                               ), '\"#{flag}\":true,', ''\
                             ), '\"#{flag}\":true', ''\
                            )")
end

Instance Method Details

#has_flags ⇒ Object

This will add the ability for the model to set and read flags. @note: The model must have the ‘flags’ column. Use rails g activemodel_flags:column model_name to generate the migration for the flags column



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# File 'lib/activemodel_flags/has_flags.rb', line 12

def has_flags
  include LocalInstanceMethods
  serialize :flags, JSON

  before_create :init_flags
  after_initialize :init_flags

  scope :that_have?, -> (key) {
    where("#{table_name}.flags LIKE '%\"#{key}\":true%'")
  }
  scope :that_havent?, -> (key) {
    where("#{table_name}.flags NOT LIKE '%\"#{key}\":true%'")
  }
  scope :that_have_not?, -> (key) { that_havent?(key) }

  scope :that_have_any_flags, -> {
    where("#{table_name}.flags != '{}' AND #{table_name}.flags IS NOT NULL")
  }

  scope :all_have!, -> (flag) {
    self.reset_flags!(flag)
    self.update_all("flags = REPLACE(#{table_name}.flags, '}', '\"#{flag}\":true}')")
  }
  scope :all_have_not!, -> (flag) {
    self.reset_flags!(flag)
    self.update_all("flags = REPLACE(#{table_name}.flags, '}', '\"#{flag}\":false}')")
  }

  def self.flags_used
    all_flags = {}

    self.that_have_any_flags.each do |obj|
      obj.flags.keys.each do |key|
        all_flags[key] = true unless all_flags[key]
      end
    end

    all_flags.keys
  end

  def self.reset_flags!(flag)
    self.update_all("flags = REPLACE(\
                               REPLACE(\
                                 REPLACE(\
                                   REPLACE(
                                    flags, '\"#{flag}\":false', ''\
                                   ), '\"#{flag}\":false,', ''\
                                 ), '\"#{flag}\":true,', ''\
                               ), '\"#{flag}\":true', ''\
                              )")
  end

  def self.reset_all_flags!
    self.update_all(flags: '{}')
  end
end