Class: Array

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

Instance Method Summary collapse

Instance Method Details

#dump(filename, batch_size = 500) ⇒ Object 



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# File 'lib/arql/ext/array.rb', line 172

def dump(filename, batch_size=500)
  File.open(File.expand_path(filename), 'w') do |file|
    group_by(&:class).each do |(klass, records)|
      file.puts(klass.to_upsert_sql(records, batch_size))
    end
  end
  {size: size, file: File.expand_path(filename)}
end

#t(*attrs, **options) ⇒ Object 



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# File 'lib/arql/ext/array.rb', line 19

def t(*attrs, **options)
  if (attrs.present? || options.present? && options[:except]) && present? && first.is_a?(ActiveRecord::Base)
    column_names = first.attribute_names.map(&:to_sym)
    attrs = attrs.flat_map { |e| e.is_a?(Regexp) ? column_names.grep(e) : e }.uniq
    if options.present? && options[:except]
      attrs = column_names if attrs.empty?
      if options[:except].is_a?(Regexp)
        attrs.reject! { |e| e =~ options[:except] }
      else
        attrs -= [options[:except]].flatten
      end
    end
    # if options[:compact]
    #   attrs = attrs.select { |e| any { |r| r.attributes[e.to_s]&.present? } }
    # end
    puts Terminal::Table.new { |t|
      t << attrs
      t << :separator
      each do |e|
        t << e.attributes.values_at(*attrs.map(&:to_s))
      end
    }
  else
    table = Terminal::Table.new { |t|
      v(**options).each { |row| t << (row || :separator)}
    }.to_s

    terminal_width = `tput cols`.to_i
    if table.lines.first.size > terminal_width
      table = table.lines.map(&:chomp)
      puts table[0..2].join("\n")
      puts table[3..-1].join("\n#{'-' * terminal_width}\n")
    else
      puts table
    end
  end
end

#to_insert_sql(batch_size = 500) ⇒ Object 



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# File 'lib/arql/ext/array.rb', line 5

def to_insert_sql(batch_size=500)
  raise 'All element should be an ActiveRecord instance object' unless all? { |e| e.is_a?(ActiveRecord::Base) }
  group_by(&:class).map do |(klass, records)|
    klass.to_insert_sql(records, batch_size)
  end.join("\n")
end

#to_upsert_sql(batch_size = 500) ⇒ Object 



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# File 'lib/arql/ext/array.rb', line 12

def to_upsert_sql(batch_size=500)
  raise 'All element should be an ActiveRecord instance object' unless all? { |e| e.is_a?(ActiveRecord::Base) }
  group_by(&:class).map do |(klass, records)|
    klass.to_upsert_sql(records, batch_size)
  end.join("\n")
end

#v(**options) ⇒ Object 



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# File 'lib/arql/ext/array.rb', line 84

def v(**options)
  return self unless present?
  t = []
  if map(&:class).uniq.size == 1
    if first.is_a?(ActiveRecord::Base)
      attribute_names = first.attribute_names
      if options[:compact]
        attribute_names = attribute_names.select { |e| any? { |r| r.attributes[e]&.present? } }
      end
      t << attribute_names
      t << nil
      each do |e|
        t << e.attributes.values_at(*attribute_names).map(&:as_json)
      end
    elsif first.is_a?(Array)
      t = map { |a| a.map(&:as_json) }
    elsif first.is_a?(Hash) || first.is_a?(ActiveSupport::HashWithIndifferentAccess)
      keys = first.keys
      if options[:compact]
        keys = keys.select { |e| any? { |r| r[e]&.present? } }
      end
      t << keys
      t << nil
      each do |e|
        t << e.values_at(*keys).map(&:as_json)
      end
    else
      return self
    end
  end
  t
end

#vd(*attrs, **options) ⇒ Object 



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# File 'lib/arql/ext/array.rb', line 57

def vd(*attrs, **options)
  if (attrs.present? || options.present? && options[:except]) && present? && first.is_a?(ActiveRecord::Base)
    column_names = first.attribute_names.map(&:to_sym)
    attrs = attrs.flat_map { |e| e.is_a?(Regexp) ? column_names.grep(e) : e }.uniq
    if options.present? && options[:except]
      attrs = column_names if attrs.empty?
      if options[:except].is_a?(Regexp)
        attrs.reject! { |e| e =~ options[:except] }
      else
        attrs -= [options[:except]].flatten
      end
    end

    Arql::VD.new do |vd|
      vd << attrs
      each do |e|
        vd << e.attributes.values_at(*attrs.map(&:to_s))
      end
    end
  else
    Arql::VD.new do |vd|
      v.each { |row| vd << row if row }
    end
  end
  nil
end

#write_csv(filename, *fields, **options) ⇒ Object 



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# File 'lib/arql/ext/array.rb', line 117

def write_csv(filename, *fields, **options)
  generate_csv(filename, **options) do |csv|
    if size > 0 && first.is_a?(ActiveRecord::Base)
      if fields.empty?
        fields = first.attributes.keys
      else
        fields = fields.map(&:to_s)
      end
      csv << fields
    end
    if size > 0 && first.is_a?(Hash)
      if fields.empty?
        fields = first.keys
      end
      csv << fields
    end
    each do |row|
      if row.is_a?(Array)
        csv << row.map(&:to_s)
      else
        csv << row.slice(*fields).values.map(&:to_s)
      end
    end
  end
end

#write_excel(filename, *fields, **options) ⇒ Object 



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# File 'lib/arql/ext/array.rb', line 143

def write_excel(filename, *fields, **options)
  sheet_name = options[:sheet_name] || 'Sheet1'
  generate_excel(filename) do |workbook|
    workbook.add_worksheet(name: sheet_name) do |sheet|
      if size > 0 && first.is_a?(ActiveRecord::Base)
        if fields.empty?
          fields = first.attributes.keys
        else
          fields = fields.map(&:to_s)
        end
        sheet.add_row(fields, types: [:string] * fields.size)
      end
      if size > 0 && first.is_a?(Hash)
        if fields.empty?
          fields = first.keys
        end
        sheet.add_row(fields, types: [:string] * fields.size)
      end
      each do |row|
        if row.is_a?(Array)
          sheet.add_row(row.map(&:to_s), types: [:string] * row.size)
        else
          sheet.add_row(row.slice(*fields).values.map(&:to_s), types: [:string] * fields.size)
        end
      end
    end
  end
end