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
0
votes
1 answer
Does the aasm state machine def need to be loaded once or many times for model class?
For a model class with AASM state machine, there is following def in the model class:
class Job
include AASM
aasm do
state :sleeping, :initial => true, :before_enter => :do_something
state :running
state :finished
......
end
My…
user938363
- 9,990
- 38
- 137
- 303
0
votes
1 answer
statemachine state is always returning the last state instead of initial
I am trying to use aasm state machine for going from one state to another. But the issue is that the statemachine is moving through all states without calling. Here is the code am using
include AASM
aasm column: 'state' do
state :pending,…
Abhilash
- 2,864
- 3
- 33
- 67
0
votes
0 answers
Can one state appear in multiple state machine with AASM?
Gem AASM supports multiple state machine per class with verion 4.3 or above. A unique state machine selector is used for each state machine in one class. Can one state appear in multiple state machine?
Here is an example. The state walking appears…
user938363
- 9,990
- 38
- 137
- 303
0
votes
1 answer
Refactoring before_filters in Controller
I'm working on a rails app that has a whole bunch of before filters in the users_controller which look up user's stateful roles provided by Acts as State Machine.
They look something like this:
class UsersController <…
btw
- 7,006
- 9
- 40
- 40
0
votes
1 answer
Before callback doesn't work in AASM/Ruby
I'm trying to work on a finite state machine with AASM in Ruby.
This is a part of my code:
event :Orthography, :before => :to_lowercase do
puts "Check Orthography"
transitions :from => :Initialized, :to => :UniquenessChecked
end
event…
Jeroen Steen
- 531
- 8
- 22
0
votes
1 answer
Use initialized variable in other methods with AASM
I'm trying to use a variable t in a other method, passed in initialize.
This is my class for Term:
class Term
include AASM
attr_accessor :t
def initialize(term)
@t = term
puts self.t
end
aasm do
state :Initialized, :initial…
Jeroen Steen
- 531
- 8
- 22
0
votes
1 answer
How to pass a parameter to new/init in AASM gem
I'm trying to make a finite state machine chain with AASM gem. I want to check if a string is unique (not existing in the database).
I wrote:
require 'rubygems'
require 'aasm'
class Term
include AASM
aasm do
state :Beginning, :initial =>…
Jeroen Steen
- 531
- 8
- 22
0
votes
1 answer
Aasm Gem Passing params into Event
I am trying to pass parameters into my event using the aasm ruby gem and rails. However, whenever I try to follow the example in the documentation, I get the error Wrong number of arguments. Expected 0, got 2.. What am I doing wrong?
Code is…
derigible
- 964
- 5
- 15
- 32
0
votes
1 answer
what does mean's aasm column in rails
I am new in rails and I am doing one project which has this code
aasm_column :status
aasm do
state :unregistered, initial: true
state :pending, enter: :enter_pending_state
state :activated, enter: :enter_activated_state
state…
Harman
- 1,703
- 5
- 22
- 40
0
votes
1 answer
Error when using eval to execute aasm block
We put the whole aasm block in string and eval it in payment_request model. Here is the def:
class PaymentRequest < :ActiveRecord::Base
include AASM
def self.load_wf_spec(wf_spec, wf_def_name)
eval("aasm(:#{wf_def_name}) :column =>…
user938363
- 9,990
- 38
- 137
- 303
0
votes
1 answer
Rails AASM helper for links for which state it may go to. Prefix to method call
In AASM you can call the may_run? as in the example code in the AASM.
object:
class Job
include AASM
aasm do
state :sleeping, :initial => true
state :running, :cleaning
event :run do
transitions :from => :sleeping, :to =>…
DogEatDog
- 2,899
- 2
- 36
- 65
0
votes
1 answer
Thread safe of state machine gems in multi-tenant Rail app
There are a few popular Ruby state machine gems such as geekq/workflow and aasm. Are they thread safe in multi-tenant Rails 4.2 application?
I am using geekq/workflow which defines process definition on model class as class method. This makes me…
user938363
- 9,990
- 38
- 137
- 303
0
votes
1 answer
Callbacks in aasm gem and ActionMailer
Im learning ruby on rails and have a trouble with aasm callbacks and actionmailer.
I have a hotels model. Heres a code:
class Hotel < ActiveRecord::Base
include AASM
scope :approved_hotels, -> { where(aasm_state: "approved") }
has_many…
Martin
- 4,042
- 2
- 19
- 29
0
votes
2 answers
How to make a generic callback for any "event" in AASM
I have a State Machine, in a Rails app (with ActiveRecord), defined with AASM and it has a lot of callbacks. Some of these callbacks contain repeated code. E.g, on every state change, we need to build and save a record and send a mail.
event…
berkes
- 26,996
- 27
- 115
- 206
0
votes
1 answer
How to pass args passed to an event to the error block with aasm?
My event is defined this way:
event :share, after: :inc_in_path_share do
transitions from: :bucketed, to: :shared
error do |e|
inc_share(message, tags)
end
end
and I call it my_instance.share(message, tags). If the…
yutu
- 109
- 1
- 5