Class::Workflow::YAML - Load workflow definitions from YAML files.
my $y = Class::Workflow::YAML->new; my $w = $y->load_file("workflow.yml"); # an exmaple workflow.yml for the bug flow # mentioned in Class::Workflow --- # data not under the key "workflow" is ignored. # In this example I use 'misc' to predeclare # an alias to some code I'll be using later. misc: set_owner_to_current_user: &setowner !perl/code: | { my ( $self, $instance, $c ) = @_; # set the owner to the user applying the # transition (see Class::Workflow::Context) return { owner => $c->user }; } workflow: initial_state: new states: - name: new transitions: # you can store transition # information inline: - name : reject to_state: rejected # or symbolically, defining # in the transitions section - accept - name: open transitions: - name : reassign to_state: unassigned # clear the "owner" field in the instance set_fields: owner: ~ - name : claim_fixed to_state: awaiting_approval - name: awaiting_approval transitions: - name : resolved to_state: closed - name : unresolved to_state: open - name: unassigned transitions: - name : take to_state: open # to dynamically set instance # you do something like this: body_sets_fields: 1 body : *setowner # these two are end states - closed - rejected # we now need to define # the "accept" transition transitions: - name : accept to_state : open body_sets_fields: 1 body : *setowner
This module lets you easily load workflow definitions from YAML files.
YAML is nice for this because its much more concise than XML, and allows clean embedding of perl code.
Load the YAML data, and call inflate_hash on an empty workflow.
inflate_hash
Define the workflow using the data inside $hash->{$self->workflow_key}.
$hash->{$self->workflow_key}
Calls Class::Workflow->new
Class::Workflow->new
A wrapper method to locally set $YAML::Syck::UseCode to 1.
$YAML::Syck::UseCode
Class::Workflow, YAML
To install Class::Workflow, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Class::Workflow
CPAN shell
perl -MCPAN -e shell install Class::Workflow
For more information on module installation, please visit the detailed CPAN module installation guide.