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

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class TopicsController < ApplicationController
include TopicsHelper
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before_filter :require_user, only: [:create, :update, :destroy]
respond_to :html, :js, :json
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# GET /topics/autocomplete_topic
def autocomplete_topic
@current = current_user
term = params[:term]
if term && !term.empty?
# !connor term here needs to have .downcase
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@topics = Topic.where('LOWER("name") like ?', term.downcase + '%').order('"name"')
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#read this next line as 'delete a topic if its private and you're either 1. logged out or 2. logged in but not the topic creator
@topics.delete_if {|t| t.permission == "private" && (!authenticated? || (authenticated? && @current.id != t.user_id)) }
else
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@topics = []
end
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render json: autocomplete_array_json(@topics)
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) }
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#format.json { respond_with(@relatives) }
format.json { render :json => @topic }
end
end
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# POST /topics
# POST /topics.json
def create
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@topic = Topic.new(params[:topic])
respond_to do |format|
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if @topic.save
format.json { render json: @topic, status: :created }
else
format.json { render json: @topic.errors, status: :unprocessable_entity }
end
end
end
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# PUT /topics/1
# PUT /topics/1.json
def update
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@topic = Topic.find(params[:id])
respond_to do |format|
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if @topic.update_attributes(params[:topic])
format.json { head :no_content }
else
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format.json { render json: @topic.errors, status: :unprocessable_entity }
end
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.mappings.each do |m|
@map = m.map
@map.touch(:updated_at)
#push notify to anyone viewing same map in realtime (see mapping.rb to understand the 'message' action)
m.message 'destroy',@current.id
m.delete
end
synapse.delete
end
@mappings.each do |mapping|
@map = mapping.map
@map.touch(:updated_at)
#push notify to anyone viewing a map with this topic in realtime (see mapping.rb to understand the 'message' action)
mapping.message 'destroy',@current.id
mapping.delete
end
@topic.delete
end
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respond_to do |format|
format.js { render :json => "success" }
end
end
end