socialforge/app/controllers/courses_controller.rb

class CoursesController < ApplicationController

  
  before_filter :require_login, :only => [:join, :unjoin]
  
  def join
    if User.current.logged?
      course = Project.find(params[:object_id])
      if params[:course_password].to_i == Course.find_by_extra(course.identifier).state
      members = []
      members << Member.new(:role_ids => [5], :user_id => User.current.id)
      course.members << members
  
      StudentsForCourse.create(:student_id => User.current.id, :course_id => params[:object_id])
      else
      end
    end
    respond_to do |format|
      # format.html { redirect_to_referer_or {render :text => (watching ? 'Watcher added.' : 'Watcher removed.'), :layout => true}}
      format.js { render :partial => 'set_join', :locals => {:user => User.current, :course => Project.find(params[:object_id])} }
    end
  end
  
  def unjoin
    if User.current.logged?
      
      @member = Member.where('project_id = ? and user_id = ?', params[:object_id], User.current.id)
      @member.first.destroy
            
      joined = StudentsForCourse.where('student_id = ? and course_id = ?', User.current.id, params[:object_id])
      joined.each do |join|
        join.delete
      end
    end
    respond_to do |format|
      # format.html { redirect_to_referer_or {render :text => (watching ? 'Watcher added.' : 'Watcher removed.'), :layout => true}}
      format.js { render :partial => 'set_join', :locals => {:user => User.current, :course => Project.find(params[:object_id])} }
    end
  end
end