Class: Arql::Definition

Inherits:
Object show all
Defined in:
lib/arql/definition.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Definition

Returns a new instance of Definition.



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# File 'lib/arql/definition.rb', line 177

def initialize(options)
  @@options = options
  @@models = []
  @@classify_method = if @@options[:singularized_table_names]
                        :camelize
                      else
                        :classify
                      end
  ActiveRecord::Base.connection.tap do |conn|
    Object.const_set('ArqlModel', Class.new(ActiveRecord::Base) do
                       include ::Arql::Concerns::TableDataDefinition
                       self.abstract_class = true

                       define_singleton_method(:indexes) do
                         conn.indexes(table_name).map do |idx|
                           {
                             Table: idx.table,
                             Name: idx.name,
                             Columns: idx.columns.join(', '),
                             Unique: idx.unique,
                             Comment: idx.comment
                           }
                         end.t
                       end
                     end)

    tables = conn.tables
    if conn.adapter_name == 'Mysql2'
      require 'arql/ext/active_record/connection_adapters/abstract_mysql_adapter'
      comments = conn.table_comment_of_tables(tables)
      primary_keys = conn.primary_keys_of_tables(tables)
    else
      comments = tables.map { |t| [t, conn.table_comment(t)] }.to_h
      primary_keys = tables.map { |t| [t, conn.primary_keys(t)] }.to_h
    end

    tables.each do |table_name|
      table_comment = comments[table_name]
      primary_keys[table_name].tap do |pkey|
        table_name.send(@@classify_method).tap do |const_name|
          const_name = 'Modul' if const_name == 'Module'
          const_name = 'Clazz' if const_name == 'Class'
          if const_name !~ /^[A-Z][A-Za-z0-9_]*$/
            puts "Invalid class name: #{const_name}, skipped."
            next
          end
          Class.new(::ArqlModel) do
            include Arql::Extension
            if pkey.is_a?(Array) && pkey.size > 1
              self.primary_keys = pkey
            else
              self.primary_key = pkey&.first
            end
            self.table_name = table_name
            self.inheritance_column = nil
            ActiveRecord.default_timezone = :local
            if options[:created_at].present?
              define_singleton_method :timestamp_attributes_for_create do
                options[:created_at]
              end
            end

            if options[:updated_at].present?
              define_singleton_method :timestamp_attributes_for_update do
                options[:updated_at]
              end
            end
          end.tap do |clazz|
            Object.const_set(const_name, clazz).tap do |const|
              const_name.gsub(/[a-z]*/, '').tap do |bare_abbr|
                abbr_const = nil
                9.times do |idx|
                  abbr = idx.zero? ? bare_abbr : "#{bare_abbr}#{idx+1}"
                  unless Object.const_defined?(abbr)
                    Object.const_set abbr, const
                    abbr_const = abbr
                    break
                  end
                end

                @@models << {
                  model: const,
                  abbr: abbr_const,
                  table: table_name,
                  comment: table_comment
                }
              end
            end
          end
        end
      end
    end
  end
end

Class Method Details

.models ⇒ Object 



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# File 'lib/arql/definition.rb', line 104

def models
  @@models ||= []
end

.redefine ⇒ Object 



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# File 'lib/arql/definition.rb', line 108

def redefine
  options = @@options
  @@models.each do |model|
    Object.send :remove_const, model[:model].name.to_sym if model[:model]
    Object.send :remove_const, model[:abbr].to_sym if model[:abbr]
  end
  @@models = []
  ActiveRecord::Base.connection.tap do |conn|
    tables = conn.tables
    comments = conn.table_comment_of_tables(tables)
    primary_keys = conn.primary_keys_of_tables(tables)
    tables.each do |table_name|
      table_comment = comments[table_name]
      primary_keys[table_name].tap do |pkey|
        table_name.send(@@classify_method).tap do |const_name|
          const_name = 'Modul' if const_name == 'Module'
          const_name = 'Clazz' if const_name == 'Class'
          Class.new(::ArqlModel) do
            include Arql::Extension
            if pkey.is_a?(Array) && pkey.size > 1
              self.primary_keys = pkey
            else
              self.primary_key = pkey&.first
            end
            self.table_name = table_name
            self.inheritance_column = nil
            ActiveRecord.default_timezone = :local
            if options[:created_at].present?
              define_singleton_method :timestamp_attributes_for_create do
                options[:created_at]
              end
            end

            if options[:updated_at].present?
              define_singleton_method :timestamp_attributes_for_update do
                options[:updated_at]
              end
            end
          end.tap do |clazz|
            Object.const_set(const_name, clazz).tap do |const|
              const_name.gsub(/[a-z]*/, '').tap do |bare_abbr|
                abbr_const = nil
                9.times do |idx|
                  abbr = idx.zero? ? bare_abbr : "#{bare_abbr}#{idx+1}"
                  unless Object.const_defined?(abbr)
                    Object.const_set abbr, const
                    abbr_const = abbr
                    break
                  end
                end

                @@models << {
                  model: const,
                  abbr: abbr_const,
                  table: table_name,
                  comment: table_comment
                }
              end
            end
          end
        end
      end
    end
  end

  App.instance&.load_initializer!
end