More readable, DRY class with jira issue creation - ruby-on-rails

Question

In my rails app I've got a base class - creator - which creates an issue in Jira board using jira-ruby gem. I want to use it in 15 different scenarios but the only thing that will be different are required fields such as summary, description, and issuetype. To avoid duplicates I use inheritance where in each case I've got a class with only one method - required_fields.
creator
module Jira
class Creator
def initialize(webhook)
#webhook = webhook
end
def call
issue = client.Issue.build
issue.save(ticket_class.new(webhook).required_fields)
end
private
def client
#client ||= Jira::JiraConnection.new.call
end
def ticket_class
#ticket_class ||= "Issues::#{webhook.action_type_class}".constantize"
end
def required_fields; end
end
end
Sample of class inheriting from Creator:
class NewRepo < Creator
def required_fields
{
'fields' => {
'summary' => 'Create new repo <github_repo> for <Github user>',
'description' => 'This is an automatic confirmation of creating new PRIVATE repo
- <github_repo> for <Github user>',
'project' => { 'key' => 'TEST' },
'issuetype' => { 'id' => '12580' },
'customfield_15100' => 'None'
}
}
end
end
This is required_fields is not so readable, how to create such an class where hash in required_fields will be look like:
{
'fields' => {
'summary' => new_repo,
'project' => testing_project,
'issuetype' => autoresolved,
'customfield_15100' => 'None'
}
}
How to put new_repo, testing_project etc (which will be a method probably?) inside of this hash? should I merge this somehow? Or maybe there is a better way to make this hash more readable?
Here are different scenarios for required fields which I want to use depends on webhook information:
class AddMember < Creator
def required_fields
{
'fields' => {
'summary' => 'Add <Github user> collaborator to <github_repo>',
'description' => 'This is an automatic ticket confirmation of user added',
'project' => { 'key' => 'New Board' },
'issuetype' => { 'id' => '12581' },
'customfield_15100' => 'None'
}
}
end
end
class DeleteRepo < Creator
def required_fields
{
'fields' => {
'summary' => 'Recheck <Github user> deleted <github_repo>',
'description' => 'This is an automatic ticket confirmation of delete repo <github_repo>',
'project' => { 'key' => 'Second Board' },
'issuetype' => { 'id' => '1234' },
'customfield_15100' => 'None'
}
}
end
end