app/controllers/announcements_controller.rb
# Extend the Rails ApplicationController to define some RESTful endpoints for
# dealing with Announcements.
class AnnouncementsController < ApplicationController
before_action :set_announcement, except: %i[index new create]
before_action :set_manage_course_breadcrumb
before_action :set_manage_announcement_breadcrumb, except: %i[index]
action_auth_level :index, :instructor
def index
@announcements = if @cud.user.administrator?
Announcement.where("course_id=? or `system`", @course.id)
else
@course.announcements
end
end
action_auth_level :new, :instructor
def new
@announcement = @course.announcements.new
end
action_auth_level :create, :instructor
def create
@announcement = @course.announcements.new(announcement_params)
if @announcement.save
flash[:success] = "Announcement Created"
redirect_to(action: :index) && return
else
flash[:error] = "Error Creating Announcement"
redirect_to(action: :new) && return
end
end
action_auth_level :edit, :instructor
def edit; end
action_auth_level :update, :instructor
def update
if @announcement.update(announcement_params)
flash[:success] = "Announcement Successfully Edited"
redirect_to(action: :index) && return
else
flash[:error] = "Error Editing Announcement"
redirect_to(action: :edit) && return
end
end
action_auth_level :destroy, :instructor
def destroy
if @announcement.destroy
flash[:success] = "Announcement Deleted"
redirect_to(action: :index) && return
else
flash[:error] = "Error Deleting Announcement"
redirect_to(action: :edit) && return
end
end
private
def set_announcement
@announcement = @course.announcements.find_by(id: params[:id])
if @announcement.nil? # May be system announcement / from another course
@announcement = Announcement.find_by(id: params[:id])
if @announcement.nil?
flash[:error] = "Announcement not found."
redirect_to(action: :index) && return
elsif !@cud.user.administrator?
flash[:error] = "You don't have permission to access this announcement."
redirect_to(action: :index) && return
end
end
# Sanity check
return unless @announcement.system && !@cud.user.administrator?
flash[:error] = "You don't have permission to access system announcements."
redirect_to(action: :index) && return
end
def announcement_params
params.require(:announcement).permit(:title, :description, :start_date,
:end_date, :system, :persistent)
end
def set_manage_announcement_breadcrumb
return if @course.nil?
@breadcrumbs << (view_context.link_to "Manage Announcements",
course_announcements_path(@course))
end
end