undefined method: connect_timeout - ruby-on-rails

Question

Browser error:
NoMethodError
undefined method `connect_timeout=' for #<Mysql2::Client:0x47f7570>
On my browser, an error comes up that connect_timeout is undefined. I'm pretty sure it has something to do with the client.rb file. I'll show you the file. I had to edit some of it to actually get Webrick up and running. When I started the server, an error always appeared on my command line unless I made the changes. I've commented on what I have edited. Sometimes edited random things and some of them worked but they produced different errors on my browser. I am using a windows 8 machine. Thank you for helping.
module Mysql2
class Client
attr_reader :query_options, :read_timeout
##default_query_options = {
:as => :hash, # the type of object you want each row back as; also supports :array (an array of values)
:async => false, # don't wait for a result after sending the query, you'll have to monitor the socket yourself then eventually call Mysql2::Client#async_result
:cast_booleans => false, # cast tinyint(1) fields as true/false in ruby
:symbolize_keys => false, # return field names as symbols instead of strings
:database_timezone => :local, # timezone Mysql2 will assume datetime objects are stored in
:application_timezone => nil, # timezone Mysql2 will convert to before handing the object back to the caller
:cache_rows => true, # tells Mysql2 to use it's internal row cache for results
#:connect_flags => REMEMBER_OPTIONS | LONG_PASSWORD | LONG_FLAG | TRANSACTIONS | PROTOCOL_41 | SECURE_CONNECTION,
#I had to delete the line above because for some reason the command prompt said that each of the constants were undefined were not used in the right place or something
:cast => true,
:default_file => nil,
:default_group => nil
}
def initialize (opts = {})
opts = Mysql2::Util.key_hash_as_symbols( opts )
#read_timeout = nil
#query_options = ##default_query_options.dup
#query_options.merge! opts
#initialize_ext
# the chrome page said that the above variable is undefined :P
# Set default connect_timeout to avoid unlimited retries from signal interruption
opts[:connect_timeout] = 120 unless opts.key?(:connect_timeout)
[:reconnect, :connect_timeout, :local_infile, :read_timeout, :write_timeout, :default_file, :default_group, :secure_auth, :init_command].each do |key|
next unless opts.key?(key)
case key
when :reconnect, :local_infile, :secure_auth
send(:"#{key}=", !!opts[key])
when :connect_timeout, :read_timeout, :write_timeout
send(:"#{key}=", opts[key].to_i)
else
send(:"#{key}=", opts[key])
end
end
# force the encoding to utf8
self.charset_name = opts[:encoding] || 'utf8'
ssl_options = opts.values_at(:sslkey, :sslcert, :sslca, :sslcapath, :sslcipher)
ssl_set(*ssl_options) if ssl_options.any?
if [:user,:pass,:hostname,:dbname,:db,:sock].any?{|k| #query_options.has_key?(k) }
warn "============= WARNING FROM mysql2 ============="
warn "The options :user, :pass, :hostname, :dbname, :db, and :sock will be deprecated at some point in the future."
warn "Instead, please use :username, :password, :host, :port, :database, :socket, :flags for the options."
warn "============= END WARNING FROM mysql2 ========="
end
user = opts[:username] || opts[:user]
pass = opts[:password] || opts[:pass]
host = opts[:host] || opts[:hostname]
port = opts[:port]
database = opts[:database] || opts[:dbname] || opts[:db]
socket = opts[:socket] || opts[:sock]
flags = opts[:flags] ? opts[:flags] | #query_options[:connect_flags] : #query_options[:connect_flags]
# Correct the data types before passing these values down to the C level
user = user.to_s unless user.nil?
pass = pass.to_s unless pass.nil?
host = host.to_s unless host.nil?
port = port.to_i unless port.nil?
database = database.to_s unless database.nil?
socket = socket.to_s unless socket.nil?
connect user, pass, host, port, database, socket, flags
end
def self.default_query_options
##default_query_options
end
def query_info
info = query_info_string
return {} unless info
info_hash = {}
info.split.each_slice(2) { |s| info_hash[s[0].downcase.delete(':').to_sym] = s[1].to_i }
info_hash
end
private
def self.local_offset
::Time.local(2010).utc_offset.to_r / 86400
end
end
end

Answer 1

Mysql2::Client#initialize called connect_timeout= but there isn't such attr_writer in the client.
when :connect_timeout, :read_timeout, :write_timeout
send(:"#{key}=", opts[key].to_i)
else
If this client is written by yourself, add attr_accessor :connect_timeout in Mysql2::Client's definition and make proper use of the attribute. If it is from other library, check your load path. You may have missed some files that opened Mysql2::Client and monkey patched it.