class Object - pry-golumn-0.0.1 Documentation

exec_to_golumn(sql) click to toggle source

# File lib/pry-golumn.rb, line 37
def exec_to_golumn(sql)
  conn = ActiveRecord::Base.connection.instance_variable_get(:@connection) || raise("@connection not found! This only works with PG connections or the PG adatper changed. Try using a different way to get the raw PG connection.")
  query_time = Time.current
  copy_cmd = 'COPY (%s) TO STDOUT CSV HEADER'
  tmp_file = File.join(Dir.tmpdir, 'pry-golumn.csv')
  conn.copy_data(copy_cmd % sql) do
    File.open(tmp_file, 'wb') do |f|
      while (row = conn.get_copy_data)
        f << row
      end
    end
  end
  begin
    table_name = sql.tr(%("'), '')[/from\s+(\w+)/i, 1]
  rescue
    table_name = '-'
    output.puts "Could not determine table name. Defaulting to '-'"
  end
  table_name = table_name.blank? ? '-' : table_name
  cmd = "golumn --title #{table_name} #{tmp_file} &"
  output.puts "> #{cmd}"
  system(cmd)
  duration = Time.current - query_time
  (duration * 1000).to_i
end

process() click to toggle source

# File lib/pry-golumn.rb, line 14
def process
  sql = sql_from_args
  output.puts('Executing SQL:', sql)
  { duration: exec_to_golumn(sql) }
end

sql_from_args() click to toggle source

Parse the Pry args into a SQL statement. The Pry args maybe a Rails statement that generates SQL, so we try called `to_sql` first or `all.to_sql`, otherwise the whole evaled result is considered the SQL.

# File lib/pry-golumn.rb, line 24
def sql_from_args
  # Remove all the flags.
  #   Sample Regex: /\b?\\-[xth]+\s*/
  argless = arg_string.gsub(%r{\b?-[#{opts.options.map(&:short).join}]+\s*}, '')
  evaled = begin
             target.eval(argless)
           rescue Exception
             # If there are any problems evaluating, consider the whole thing as raw SQL
             argless
           end
  evaled.try(:to_sql) || evaled.try(:all).try(:to_sql) || evaled
end