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Contents
# frozen_string_literal: true
module Decidim
# A command with all the business logic to leave a user group.
class LeaveUserGroup < Decidim::Command
# Public: Initializes the command.
#
# user - the user that wants to leave the group
# user_group - The user group to leave
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 could not proceed.
#
# Returns nothing.
def call
return broadcast(:invalid) unless can_leave?
return broadcast(:last_admin) if last_admin?
leave_user_group
broadcast(:ok, @user_group)
end
private
attr_reader :user, :user_group
def leave_user_group
Decidim::UserGroupMembership.find_by!(user:, user_group:).destroy!
end
def can_leave?
Decidim::UserGroupMembership.where(user:, user_group:).any?
end
def last_admin?
admin_memberships = Decidim::UserGroupMembership.where(user_group:, role: [:creator, :admin])
admin_memberships.length == 1 && admin_memberships.pluck(:decidim_user_id).include?(user.id)
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems