CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3rubygemsstate-machine
Vijay Sali
Vijay Sali

Reputation: 1038

Getting previous states in state_machine rails

I am developing state machine using state_machine on rails, here i have different states which is defined , based on conditions state will change to another state . Here my question is how to get the previous state? and my second question is how to list all the states in state machine ?

i will explain my question with example say i have 3 states say state1,state2,state3 initially it will be in state1. when event1 is executed state changes from state1=>state2 , now i wanted to know which is my previous state. kindly help me out in figuring out this.

Upvotes: 4

Views: 2218

Answers (3)

zabumba
zabumba

Reputation: 12412

I used paper_trail gem and reified previous versions.

This allows me to follow up the sequence of states that the object went through.

With paper_trail you can even retrieve the Originator or Terminator of that state change.

Upvotes: 1

Aaron Pfeifer
Aaron Pfeifer

Reputation: 26

This may be what you're looking for: https://github.com/wvanbergen/state_machine-audit_trail

Upvotes: 1

andresbravog
andresbravog

Reputation: 593

if you are looking for the list of previous states from an object, i'm afraid u can not. state_machine only changes a column value in your models database register, dosen't stores any type of history.

Please check solutions like acts_as_versioned (https://github.com/technoweenie/acts_as_versioned) to store and play with your models versions.

Also you want to check aasm gem https://github.com/rubyist/aasm

Cheers

Upvotes: 1

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