115 lines
3.7 KiB
Ruby
115 lines
3.7 KiB
Ruby
#
|
|
# Copyright (C) 2011 Instructure, Inc.
|
|
#
|
|
# This file is part of Canvas.
|
|
#
|
|
# Canvas is free software: you can redistribute it and/or modify it under
|
|
# the terms of the GNU Affero General Public License as published by the Free
|
|
# Software Foundation, version 3 of the License.
|
|
#
|
|
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
|
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
|
|
# details.
|
|
#
|
|
# You should have received a copy of the GNU Affero General Public License along
|
|
# with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
class Announcement < DiscussionTopic
|
|
|
|
belongs_to :context, :polymorphic => true
|
|
|
|
EXPORTABLE_ATTRIBUTES = [
|
|
:id, :context_id, :context_type, :title, :message, :type, :user_id,
|
|
:workflow_state, :last_reply_at, :created_at, :updated_at, :delayed_post_at, :posted_at,
|
|
:assignment_id, :attachment_id, :deleted_at, :root_topic_id, :could_be_locked, :cloned_item_id,
|
|
:context_code, :position, :subtopics_refreshed_at, :old_assignment_id, :last_assignment_id, :external_feed_id,
|
|
:editor_id, :podcast_enabled, :podcast_has_student_posts, :require_initial_post, :discussion_type, :lock_at, :pinned, :locked
|
|
]
|
|
|
|
EXPORTABLE_ASSOCIATIONS = [:context]
|
|
|
|
has_a_broadcast_policy
|
|
include HasContentTags
|
|
|
|
sanitize_field :message, CanvasSanitize::SANITIZE
|
|
|
|
before_save :infer_content
|
|
before_save :respect_context_lock_rules
|
|
validates_presence_of :context_id
|
|
validates_presence_of :context_type
|
|
validates_presence_of :message
|
|
|
|
acts_as_list scope: { context: self, type: 'Announcement' }
|
|
|
|
def validate_draft_state_change
|
|
old_draft_state, new_draft_state = self.changes['workflow_state']
|
|
self.errors.add :workflow_state, I18n.t('#announcements.error_draft_state', "This topic cannot be set to draft state because it is an announcement.") if new_draft_state == 'unpublished'
|
|
end
|
|
|
|
def infer_content
|
|
self.title ||= t(:no_title, "No Title")
|
|
end
|
|
protected :infer_content
|
|
|
|
def respect_context_lock_rules
|
|
lock if !locked? &&
|
|
context.is_a?(Course) &&
|
|
context.lock_all_announcements?
|
|
end
|
|
protected :respect_context_lock_rules
|
|
|
|
set_broadcast_policy! do
|
|
dispatch :new_announcement
|
|
to { active_participants(true) - [user] }
|
|
whenever { |record|
|
|
record.context.available? and
|
|
((record.just_created and !(record.post_delayed? || record.unpublished?)) || record.changed_state(:active, record.draft_state_enabled? ? :unpublished : :post_delayed))
|
|
}
|
|
end
|
|
|
|
set_policy do
|
|
given { |user| self.user.present? && self.user == user }
|
|
can :update and can :reply and can :read
|
|
|
|
given { |user| self.user.present? && self.user == user && self.discussion_entries.active.empty? }
|
|
can :delete
|
|
|
|
given { |user, session| self.context.grants_right?(user, session, :read) }
|
|
can :read
|
|
|
|
given { |user, session| self.context.grants_right?(user, session, :post_to_forum) }
|
|
can :reply
|
|
|
|
given { |user, session| self.context.is_a?(Group) && self.context.grants_right?(user, session, :post_to_forum) }
|
|
can :create
|
|
|
|
given { |user, session| self.context.grants_right?(user, session, :moderate_forum) } #admins.include?(user) }
|
|
can :update and can :delete and can :reply and can :create and can :read and can :attach
|
|
end
|
|
|
|
def is_announcement; true end
|
|
|
|
# no one should receive discussion entry notifications for announcements
|
|
def subscribers
|
|
[]
|
|
end
|
|
|
|
def subscription_hold(user, context_enrollment, session)
|
|
:topic_is_announcement
|
|
end
|
|
|
|
def can_unpublish?
|
|
false
|
|
end
|
|
|
|
def draft_state_enabled?
|
|
false
|
|
end
|
|
|
|
def published?
|
|
true
|
|
end
|
|
end
|