rails 4 ActiveRecord :: StatementInvalid

Question

While upgrading rails application from rails3.2 to rails 4. I am getting a issue

ActiveRecord::StatementInvalid in SessionsController#new

Mysql::Error: Field 'session_id' doesn't have a default value: INSERT INTO sessions ( created_at , data , updated_at ) VALUES (?, ?, ?)

In my sessions table I have session_id field, But I don't know how to set default value.

can u help me to resolve this issue?

my add_sessions_table.rb migration file:

class AddSessionsTable < ActiveRecord::Migration

def change

 create_table :sessions do |t| t.string :session_id, :null => false t.text :data t.timestamps end add_index :sessions, :session_id add_index :sessions, :updated_at end 

end

my sessions_store.rb file

MyApp::Application.config.session_store :active_record_store

Thanks

Answer 1

Add this code in an initializer,

ActiveRecord::SessionStore::Session.attr_accessible :data, :session_id

for more info checkout the activerecord-session_store link