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How to use column_names method of ClassMethods Package

Best Active_mocker_ruby code snippet using ClassMethods.column_names

orm_mapper.rb

Source:orm_mapper.rb

...14  end15  module ClassMethods16    def establish_connection(opts = {})17      connection = _init_connection(opts)18      _init_column_names19      define_method 'attribute_names' do20        self.class.attribute_names21      end22      define_method 'attributes' do23        instance_values.select { |key| key.in?(attribute_names) }24      end25      define_method 'empty?' do26        attributes.blank?27      end28      connection29    end30    def connection31      class_variable_get :@@connection32    end33    def attribute_names34      class_variable_get :@@column_names35    end36    private37    def _init_connection(opts)38      # self.superclass --> ActiveRecord::Base39      if self.superclass.class_variables.include?(:@@connection)40        connection = self.superclass.class_variable_get :@@connection41        puts "Debug DB connected"42      else43        connection = self.superclass.class_variable_set(:@@connection, ::SQLite3::Database.new(opts[:database]))44        puts "Debug new connection: #{connection.inspect}"45      end46      connection47    end48    def _init_column_names49      # set column_names50      sql_query = "PRAGMA table_info(#{self.to_s.underscore.pluralize})"51      puts "Debug SQL table_info: `#{sql_query}`"52      column_names = connection.execute(sql_query).map { |array| array[1] }53      class_variable_set(:@@column_names, column_names)54      puts "Debug #{self.to_s} column_names: #{column_names}"55    end56  end57end

csv_model.rb

Source:csv_model.rb

...6  def merge! model7    fill!(model.to_s.split("@"))8  end9  def fill! row10    self.class.column_names.each_with_index do |name, index|11      public_send "#{name}=", row[index]12    end13  end14  def to_s15    self.class.column_names.collect {|name| public_send name }.join "@"16  end17  module ClassMethods18    def csv_model options={}19      column_names = options.fetch(:column_names)20      define_singleton_method :column_names do21        column_names22      end23      define_singleton_method :delta_file_name do24        options.fetch(:delta_file_name)25      end26      define_singleton_method :log_file_name do27        options.fetch(:log_file_name)28      end29      define_method :operation do30        public_send options.fetch(:operation_attribute)31      end32    end33    def parse file_name34	models = []35	begin...

struct_pluck.rb

Source:struct_pluck.rb

...7  def self.included(base)8    base.extend(ClassMethods)9  end10  module ClassMethods11    def struct_pluck(column_names)12      result = pluck(*column_names)13      fakerecord = Struct.new(*column_names)14      result.map do |r|15        fail UnsupportedDatatype if r.size != column_names.size16        fakerecord.new(*r)17      end18    end19  end20end21ActiveRecord::Base.send(:include, StructPluck)...

column_names

Using AI Code Generation

1    %w(name address phone)2    %w(name address phone)3Traceback (most recent call last):42.rb:6:in `column_names': undefined method `column_names' for Student:Class (NoMethodError)5Traceback (most recent call last):62.rb:6:in `column_names': undefined method `column_names' for Student:Class (NoMethodError)7Traceback (most recent call last):82.rb:6:in `column_names': undefined method `column_names' for Student:Class (NoMethodError)9Traceback (most recent call last):102.rb:6:in `column_names': undefined method `column_names' for Student:Class (NoMethodError)11Traceback (most recent call last):122.rb:6:in `column_names': undefined method `column_names' for Student:Class (NoMethodError)13Traceback (most recent call last):142.rb:6:in `column_names': undefined method `column_names' for Student:Class (NoMethodError)

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