Module: SelectableAttrRails::DbLoadable::InstanceMethods

Defined in:
lib/selectable_attr_rails/db_loadable.rb

Instance Method Summary collapse

Instance Method Details

#entries ⇒ Object 



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# File 'lib/selectable_attr_rails/db_loadable.rb', line 19

def entries
  update_entries if must_be_updated?
  @entries
end

#must_be_updated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/selectable_attr_rails/db_loadable.rb', line 24

def must_be_updated?
  return false if @update_timing == :never
  return true if @update_timing == :everytime
end

#update_entries ⇒ Object 



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# File 'lib/selectable_attr_rails/db_loadable.rb', line 29

def update_entries
  unless @original_entries
    @original_entries = @entries.dup
    @original_entries.each do |entry|
      entry.extend(SelectableAttrRails::DbLoadable::Entry)
    end
  end
  records = nil
  if @sql_to_update.respond_to?(:call)
    records = @sql_to_update.call
  else
    @connection ||= ActiveRecord::Base.connection
    records = @connection.select_rows(@sql_to_update)
  end
  
  new_entries = []
  records.each do |r|
    if entry = @original_entries.detect{|entry| entry.id == r.first}
      entry.name_from_db = r.last unless r.last.blank?
      new_entries << entry
    else
      entry = SelectableAttr::Enum::Entry.new(self, r.first, "entry_#{r.first}".to_sym, r.last)
      new_entries << entry
    end
  end
  @original_entries.each do |entry|
    unless new_entries.include?(entry)
      entry.name_from_db = nil
      new_entries << entry if entry.defined_in_code
    end
  end
  @entries = new_entries
end