metamaps--metamaps/app/controllers/topics_controller.rb

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class TopicsController < ApplicationController
before_filter :require_user, only: [:new, :create, :edit, :update, :destroy]
respond_to :html, :js, :json
autocomplete :topic, :name, :full => true, :extra_data => [:user_id], :display_value => :topic_autocomplete_method
# GET topics
# or GET /users/:user_id/topics
def index
@current = current_user
if params[:user_id]
@user = User.find(params[:user_id])
@topics = Topic.order("name ASC").visibleToUser(@current, @user)
elsif
@topics = Topic.order("name ASC").visibleToUser(@current, nil)
end
respond_with(@user,@topics)
end
# Get topics/new
def new
@topic = Topic.new
@user = current_user
respond_with(@topic)
end
# GET topics/:id
def show
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_show(@current)
if @topic
@relatives = @topic.network_as_json(@current).html_safe
else
redirect_to root_url and return
end
respond_to do |format|
format.html { respond_with(@topic, @user) }
format.json { respond_with(@relatives) }
end
end
# GET topics/:id/json
def json
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_show(@current)
if not @topic
redirect_to root_url and return
end
respond_to do |format|
format.json { render :json => @topic.self_as_json }
end
end
# POST topics
def create
@user = current_user
# if the topic exists grab it and return it
if params[:topic][:grabTopic] != "null"
@topic = Topic.find(params[:topic][:grabTopic])
# if the topic doesn't exist yet, create it
else
@topic = Topic.new()
@topic.name = params[:topic][:name]
@topic.desc = ""
@topic.link = ""
@topic.permission = 'commons'
@topic.metacode = Metacode.find_by_name(params[:topic][:metacode])
@topic.user = @user
#if being created on a map, set topic by default to whatever permissions the map is
if params[:topic][:map]
@map = Map.find(params[:topic][:map])
@topic.permission = @map.permission
end
@topic.save
end
# pass on to the topic create js whether it's being created with a synapse
@synapse = "false"
if params[:topic][:addSynapse] == "true"
@synapse = "true"
end
# also create an object to return the position to the canvas
@position = Hash.new()
@position['x'] = params[:topic][:x]
@position['y'] = params[:topic][:y]
# set this for the case where the topic is being created on a map.
@mapping = Mapping.new()
if params[:topic][:map]
@map = Map.find(params[:topic][:map])
@mapping.category = "Topic"
@mapping.user = @user
@mapping.map = @map
@mapping.topic = @topic
@mapping.xloc = params[:topic][:x]
@mapping.yloc = params[:topic][:y]
@mapping.save
end
respond_to do |format|
format.html { respond_with(@user, location: topic_url(@topic)) }
format.js { respond_with(@topic, @mapping, @synapse, @position) }
end
end
# GET topics/:id/edit
def edit
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_edit(@current)
if not @topic
redirect_to root_url and return
end
respond_with(@topic)
end
# PUT topics/:id
def update
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_edit(@current)
if @topic
if params[:topic]
@topic.name = params[:topic][:name] if params[:topic][:name]
@topic.desc = params[:topic][:desc] if params[:topic][:desc]
@topic.link = params[:topic][:link] if params[:topic][:link]
@topic.permission = params[:topic][:permission] if params[:topic][:permission]
@topic.metacode = Metacode.find_by_name(params[:topic][:metacode]) if params[:topic][:metacode]
end
@topic.save
end
respond_with @topic
end
# GET mappings/:map_id/:topic_id/removefrommap
def removefrommap
@current = current_user
@mapping = Mapping.find_by_topic_id_and_map_id(params[:topic_id],params[:map_id])
@map = Map.find(params[:map_id])
@topic = Topic.find(params[:topic_id])
@mappings = @map.mappings.select{|m|
if m.synapse != nil
m.synapse.topic1 == @topic || m.synapse.topic2 == @topic
else
false
end
}
@mappings.each do |m|
m.delete
end
@mapping.delete
respond_to do |format|
format.js
end
end
# DELETE topics/:id
def destroy
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_edit(@current)
if @topic
@synapses = @topic.synapses
@mappings = @topic.mappings
@synapses.each do |synapse|
synapse.delete
end
@mappings.each do |mapping|
mapping.delete
end
@topic.delete
end
respond_to do |format|
format.js
end
end
end