Statesman
A statesmanlike state machine library. (by gocardless)
state_machines
Adds support for creating state machines for attributes on any Ruby class (by state-machines)
| Statesman | state_machines | |
|---|---|---|
| 4 | 5 | |
| 1,813 | 827 | |
| 0.4% | 0.2% | |
| 1.7 | 7.1 | |
| 3 months ago | about 1 month ago | |
| Ruby | Ruby | |
| MIT License | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Statesman
Posts with mentions or reviews of Statesman.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-01-22.
-
A Deep Dive into the Statesman Gem for Ruby: Building Flexible State Machines
Statesman was developed by the team GoCardless to address some of the limitations in other state machine gems like AASM or state_machine. It offers:
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Why Developers Never Use State Machines (2011)
I’d strongly recommend Statesman instead: https://gocardless.com/blog/statesman/
I’m unaffiliated, just have used a lot of Ruby SM libraries.
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State Machines in Ruby: An Introduction
Honestly state machines are fantastic in Rails too. My last company built [Statesman](https://github.com/gocardless/statesman/) and being able to lean on it to prevent you getting into invalid states is fantastic. You also get the bonus of tracking the history of states your resources went through (which is especially useful when you're dealing with payments).
At some point you'll have to think about query performance on the state transition table, but it'll go further than you think and is firmly in the realm of problems of success.
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Code review of an Order object implemented as a state machine
I know you were doing educational proof of concent. But when I write them, I usually reach for the statesman gem. Makes state machines pretty trivial IME.
state_machines
Posts with mentions or reviews of state_machines.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-01-21.
- Gem adds support for creating state machines for attributes on any Ruby class
-
Practical State Machinery
State Machines (Ruby) - A popular library providing a Ruby DSL for easily building finite state machines
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Why Developers Never Use State Machines (2011)
As a regular user of the state_machine Ruby gem, I wouldn't recommend it. If you don't believe me, just check out the "Class definition" section of the usage examples: https://github.com/state-machines/state_machines#usage
The problems are obvious. It's built on magic and indirection. This leads to difficult to debug state machine problems. For anything beyond simple state machines you quickly lose any idea of what your object is doing.
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ActiveRecord: Adding Boolean methods for DateTime columns
Might this be better handled with a state machine with active record integration?
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Ruby 3 Released
Here's an example of how it can happen - look at the code examples in https://github.com/state-machines/state_machines - almost everything you are coding is in the DSL of that library if you are using it:
What are some alternatives?
When comparing Statesman and state_machines you can also consider the following projects:
AASM - AASM - State machines for Ruby classes (plain Ruby, ActiveRecord, Mongoid, NoBrainer, Dynamoid)
State Machine - Adds support for creating state machines for attributes on any Ruby class
FiniteMachine - A minimal finite state machine with a straightforward syntax.
simple_states - A super-slim statemachine-like support library