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Contents
# frozen_string_literal: true
module Decidim
# A command with all the business logic to join a user group.
class JoinUserGroup < Decidim::Command
# Public: Initializes the command.
#
# user - the user that wants to join the group
# user_group - The user group to join
def initialize(user, user_group)
@user = user
@user_group = user_group
end
# Executes the command. Broadcasts these events:
#
# - :ok when everything is valid.
# - :invalid if we couldn't proceed.
#
# Returns nothing.
def call
return broadcast(:invalid) if already_member?
transaction do
join_user_group
send_notification
end
broadcast(:ok, @user_group)
end
private
attr_reader :user, :user_group
def join_user_group
Decidim::UserGroupMembership.create!(user: user, user_group: user_group, role: :requested)
end
def already_member?
Decidim::UserGroupMembership.where(user: user, user_group: user_group).any?
end
def send_notification
Decidim::EventsManager.publish(
event: "decidim.events.groups.join_request_created",
event_class: JoinRequestCreatedEvent,
resource: user_group,
affected_users: user_group.managers,
extra: {
user_group_name: user_group.name,
user_group_nickname: user_group.nickname
}
)
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems