Aasm gem

It currently provides adapters for ActiveRecordaasm gem, Mongoidand Mongomapper but it can be used for any Ruby class, no matter what aasm gem class it has if any. Adding a state machine is as simple as including the AASM module and start defining states and events together with their transitions :.

The gem exposes the generate Rake task, that can be used to generate the diagrams of state machines into PNG images. The generate task accepts two parameters:. If no state machine name is provided, the task will use default for the file name. Once installed, the gem automatically integrates with Rails via Railties and exposes the task automatically. If the model contains only one state machine, or you just want to generate for the "default" one you can skip the state machine name parameter. For plain Ruby projects the gem includes a Rakefile that can be loaded in your project's Rakefile, using source code along the lines of:. AASM Diagram is heavily inspired by rails-erd.

Aasm gem

It currently provides adapters for many ORMs but it can be used for any Ruby class, no matter what parent class it has if any. Adding a state machine is as simple as including the AASM module and start defining states and events together with their transitions :. This provides you with a couple of public methods for instances of the class Job :. If you don't like exceptions and prefer a simple true or false as response, tell AASM not to be whiny :. When firing an event, you can pass a block to the method, it will be called only if the transition succeeds :. You can define a number of callbacks for your events, transitions and states. These methods, Procs or classes will be called when certain criteria are met, like entering a particular state:. AASM will also initialize LogRunTime and run the call method for you after the transition from running to finished in the example above. You can pass arguments to the class by defining an initialize method on it, like this:. Note that Procs are executed in the context of a record, it means that you don't need to expect the record as an argument, just call the methods you need. All guards and after callbacks will receive these parameters.

Last commit date. You could write some if statements like this:.

When it changes colors, the next color is based on the current one. You could write some if statements like this:. Every state knows itself so there is no need to check for the current state. This translates into less conditional statements which are often a source of complexity. However, we still want to share the initialize method between all the states because all of them need the context TrafficLight object to signal a state change.

It currently provides adapters for many ORMs but it can be used for any Ruby class, no matter what parent class it has if any. Adding a state machine is as simple as including the AASM module and start defining states and events together with their transitions :. This provides you with a couple of public methods for instances of the class Job :. If you don't like exceptions and prefer a simple true or false as response, tell AASM not to be whiny :. When firing an event, you can pass a block to the method, it will be called only if the transition succeeds :. You can define a number of callbacks for your events, transitions and states.

Aasm gem

It currently provides adapters for ActiveRecord and Mongoid , but it can be used for any Ruby class, no matter what parent class it has if any. Adding a state machine is as simple as including the AASM module and start defining states and events together with their transitions :. If you don't like exceptions and prefer a simple true or false as response, tell AASM not to be whiny :. You can define a number of callbacks for your transitions. These methods will be called, when certain criteria are met, like entering a particular state:. In case of an error during the event processing the error is rescued and passed to :error callback, which can handle it or re-raise it for further propagation. Let's assume you want to allow particular transitions only if a defined condition is given. For this you can set up a guard per transition, which will run before actually running the transition. AASM comes with support for ActiveRecord and allows automatical persisting of the object's state in the database.

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This gem is built around the idea of events like pressing a light switch that trigger transitions into other states. Display name for state. Or if you are using Bundler. So whenever a transition callback or the state update fails, all changes to any database record are rolled back. Nonetheless, here's how to do it see below. Since version 4. AASM provides assertions and rspec-like expectations for Minitest. Dismiss alert. Manually from RubyGems. AASM will also initialize LogRunTime and run the call method for you after the transition from running to finished in the example above. You signed in with another tab or window. So, for example, to use inspection on a class level, you have to use.

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Plain Ruby. If you want to encapsulate state changes within an own transaction, the behavior of this nested transaction might be confusing. If you prefer a more Ruby-like guard syntax, you can use if and unless as well:. So, for example, to use inspection on a class level, you have to use SimpleMultipleExample. This software is provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties of merchantibility and fitness for a particular purpose. In case of an error during the event processing the error is rescued and passed to :error callback, which can handle it or re-raise it for further propagation. It currently provides adapters for ActiveRecord , Mongoid , and Mongomapper but it can be used for any Ruby class, no matter what parent class it has if any. Packages 0 No packages published. Multiple state machines per class. Generated on Sat Mar 9 by yard 0.