A library for adding finite state machines to Ruby classes.
Started as the acts_as_state_machine plugin but has evolved into a more generic library that no longer targets only ActiveRecord models.
Supports
- States
- Machines
- Events
- Transitions
Questions tagged [aasm]
132 questions
2
votes
2 answers
Background Video Processing with Rails
I am trying to get uploaded videos to be converted in the background, running windows. Some of what I am using:
gem 'paperclip'
gem 'delayed_job_active_record'
gem 'ffmpeg'
I have edited the registry to allow the ffmpeg command to be ran from…
Matthew
- 35
- 1
- 8
1
vote
1 answer
How do I access old and new states in an aasm callback in rails?
I am new to both Ruby and Rails.
I'm using AASM to put state machine behavior into a model class. Depending on the old and new states I want to handle the state change event in different ways.
How do I either invoke the "after" callback with the…
mattx
- 245
- 1
- 10
1
vote
1 answer
Ruby add dynamic events using AASM
I've got a class in a program which is handling game states. I'm actually handling it with AASM so to create an event I have to use something like aasm_event :name ... inside the class.
I need to be able to load other files who dynamically have to…
Cydonia7
- 3,744
- 2
- 23
- 32
1
vote
1 answer
Stopping event in AASM from after callback without raising exception
aasm column: :status, whiny_transitions: false do
state :requested, initial: true
state :approved
event :approve, after: :after_approve do
transitions from: :requested, to: :approved
end
end
def after_approve
raise "This is a…
Paul Odeon
- 4,407
- 1
- 37
- 37
1
vote
2 answers
AASM Gem broken by Rails 2.3.2?
Has anyone had any problems using the AASM state machine Gem with Rails 2.3.2? It was working fine for me but is now giving a NoMethodError:
NoMethodError (undefined method `state' for #):
…
John Topley
- 113,588
- 46
- 195
- 237
1
vote
2 answers
Why is my AASM state machine not triggered with Rails 7 Turbo patch links?
I just updated my Rails 6 app to Rails 7 and have problems updating my :patch and :delete links to Turbo.
For example, in one of my views I have this link...
link_to("Mark as sent", status_url(quote), :data => {:'turbo_method' => :patch})
...…
Tintin81
- 9,821
- 20
- 85
- 178
1
vote
1 answer
Ruby AASM: trigger callbacks on model update
AASM callbacks are bypassed when updating model fields directly. This can be disabled by setting the no_direct_assignment flag, but this will break other integrations, such as a simple update via active_admin.
Is there a way to allow model updates…
thisismydesign
- 21,553
- 9
- 123
- 126
1
vote
0 answers
Rails trigger AASM event on nested associations autosave
I have a parent and child model schema defined with each having its own AASM state machine
class Project < ApplicationRecord
has_many :tasks, autosave: true
include AASM
aasm do
state :created, initial: true
state :in_progress
…
Abhishek Patel
- 11
- 1
1
vote
0 answers
How to avoid defining state twice in aasm
I'm currently using the aasm gem and it works great. Is it possible to define state just once instead of twice like below?
enum state: [:pending, :active, :inactive]
aasm column: :state, enum: true do
state :pending, :active, :inactive
event…
vince
- 2,374
- 4
- 23
- 39
1
vote
0 answers
AASM state machine, can guards be skipped?
Is it possible to skip a guard in some instances? Kind of like running some_event_without_validation! except you're not skipping object validation, but transitions guards.
james
- 3,989
- 8
- 47
- 102
1
vote
0 answers
Rails AASM gem, how could you achieve substate?
It's my first time using AASM and I'm wondering how I might be able to achieve a substate implementation. Pure example as I'm learning through this. Let's say we're tracking the state of a patient as they move through a hospital. Here's an imaginary…
james
- 3,989
- 8
- 47
- 102
1
vote
1 answer
Implement a conditional state machine for a rails model
I have a rails model called Creative that implements a workflow using the aasm gem. Currently my model has just one workflow implemented in it.
I have a business scenario that will require me to implement another workflow in the same model which…
Moiz Mansur
- 180
- 3
- 13
1
vote
1 answer
Ruby State Machine with history, superstates, and logs/statistics?
Is there any state machine implementation for Ruby or Ruby on Rails that supports superstates, can keep track of past states (and edit them), and keep track of the time spent on each state?
I've used aasm but it doesn't have all these features. I've…
Reed G. Law
- 3,897
- 1
- 41
- 78
1
vote
0 answers
Is there a way to use boolean field with aasm gem?
I am using boolean column is_locked with aasm gem but when I create new record then is_locked column has the 0 value as expected initial but when I try to lock it return true but value doesn't change in the column seems I am doing something…
Ravi Shrivastava
- 41
- 6
1
vote
0 answers
Ruby AASM (Act as State Machine): processing a payment: combining a before callback with a guard
Let's assume a very simple Payment class like this:
class Payment
include AASM
aasm do
state :created
state :paid
state :refunded
event :pay do
transitions from :created, to :paid
end
end
end
So one would call…
sandre89
- 5,218
- 2
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- 64