set master only for write operations

[clarkyi]

I want set master only for wirte operations,so i set pool_weight is zero
my database.yml like this

development:
  adapter: seamless_database_pool
  database: mydb_development
  username: read_user
  password: abc123
  pool_adapter: mysql2
  port: 3306
  master:
    host: master-db.example.com
    port: 6000
    username: master_user
    password: 567pass
    pool_weight: 0
  read_pool:
    - host: read-db-1.example.com
      pool_weight: 2
    - host: read-db-2.example.com

but when i select my data list then using master not read_pool
my application_controller.rb

class ApplicationController < ActionController::Base
  include SeamlessDatabasePool::ControllerFilter
  use_database_pool :all => :master, [:create, :update, :destroy] => :master
  protect_from_forgery
end

why?? my step is error?

[bdurand]

Your config is specifying :all => :master which will force using the master connection. Try changing to :all => :persistent to have the read pool be the default.

[clarkyi]

oh! I see,thank you @bdurand