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

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class TopicsController < ApplicationController
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include TopicsHelper
before_filter :require_user, only: [:create, :update, :destroy]
respond_to :html, :js, :json
# GET /topics/autocomplete_topic
def autocomplete_topic
@current = current_user
term = params[:term]
if term && !term.empty?
@topics = Topic.where('LOWER("name") like ?', term.downcase + '%').order('"name"')
#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
@topics = []
end
render json: autocomplete_array_json(@topics)
end
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# GET topics/:id
def show
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_show(@current)
if not @topic
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redirect_to root_url, notice: "Access denied. That topic is private." and return
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end
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respond_to do |format|
format.html {
@alltopics = ([@topic] + @topic.relatives).delete_if {|t| t.permission == "private" && (!authenticated? || (authenticated? && @current.id != t.user_id)) } # should limit to topics visible to user
@allsynapses = @topic.synapses.delete_if {|s| s.permission == "private" && (!authenticated? || (authenticated? && @current.id != s.user_id)) }
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@allcreators = []
@alltopics.each do |t|
if @allcreators.index(t.user) == nil
@allcreators.push(t.user)
end
end
@allsynapses.each do |s|
if @allcreators.index(s.user) == nil
@allcreators.push(s.user)
end
end
respond_with(@allsynapses, @alltopics, @allcreators, @topic)
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}
format.json { render json: @topic }
end
end
# GET topics/:id/network
def network
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_show(@current)
if not @topic
redirect_to root_url, notice: "Access denied. That topic is private." and return
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end
@alltopics = @topic.relatives.delete_if {|t| t.permission == "private" && (!authenticated? || (authenticated? && @current.id != t.user_id)) }
@allsynapses = @topic.synapses.delete_if {|s| s.permission == "private" && (!authenticated? || (authenticated? && @current.id != s.user_id)) }
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@allcreators = []
@allcreators.push(@topic.user)
@alltopics.each do |t|
if @allcreators.index(t.user) == nil
@allcreators.push(t.user)
end
end
@allsynapses.each do |s|
if @allcreators.index(s.user) == nil
@allcreators.push(s.user)
end
end
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@json = Hash.new()
@json['topic'] = @topic
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@json['creators'] = @allcreators
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@json['relatives'] = @alltopics
@json['synapses'] = @allsynapses
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respond_to do |format|
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format.json { render json: @json }
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end
end
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# GET topics/:id/relative_numbers
def relative_numbers
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_show(@current)
if not @topic
redirect_to root_url, notice: "Access denied. That topic is private." and return
end
@topicsAlreadyHas = params[:network] ? params[:network].split(',') : []
@alltopics = @topic.relatives.delete_if {|t|
@topicsAlreadyHas.index(t.id.to_s) != nil ||
(t.permission == "private" && (!authenticated? || (authenticated? && @current.id != t.user_id)))
}
@alltopics.uniq!
@json = Hash.new()
@alltopics.each do |t|
if @json[t.metacode.id]
@json[t.metacode.id] += 1
else
@json[t.metacode.id] = 1
end
end
respond_to do |format|
format.json { render json: @json }
end
end
# GET topics/:id/relatives
def relatives
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_show(@current)
if not @topic
redirect_to root_url, notice: "Access denied. That topic is private." and return
end
@topicsAlreadyHas = params[:network] ? params[:network].split(',') : []
@alltopics = @topic.relatives.delete_if {|t|
@topicsAlreadyHas.index(t.id.to_s) != nil ||
(params[:metacode] && t.metacode_id.to_s != params[:metacode]) ||
(t.permission == "private" && (!authenticated? || (authenticated? && @current.id != t.user_id)))
}
@alltopics.uniq!
@allsynapses = @topic.synapses.delete_if {|s|
(s.topic1 == @topic && @alltopics.index(s.topic2) == nil) ||
(s.topic2 == @topic && @alltopics.index(s.topic1) == nil)
}
@creatorsAlreadyHas = params[:creators] ? params[:creators].split(',') : []
@allcreators = []
@alltopics.each do |t|
if @allcreators.index(t.user) == nil && @creatorsAlreadyHas.index(t.user_id.to_s) == nil
@allcreators.push(t.user)
end
end
@allsynapses.each do |s|
if @allcreators.index(s.user) == nil && @creatorsAlreadyHas.index(s.user_id.to_s) == nil
@allcreators.push(s.user)
end
end
@json = Hash.new()
@json['topics'] = @alltopics
@json['synapses'] = @allsynapses
@json['creators'] = @allcreators
respond_to do |format|
format.json { render json: @json }
end
end
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# POST /topics
# POST /topics.json
def create
@topic = Topic.new(params[:topic])
respond_to do |format|
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
@topic = Topic.find(params[:id])
respond_to do |format|
if @topic.update_attributes(params[:topic])
format.json { head :no_content }
else
format.json { render json: @topic.errors, status: :unprocessable_entity }
end
end
end
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# DELETE topics/:id
def destroy
@current = current_user
@topic = Topic.find(params[:id]).authorize_to_delete(@current)
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if @topic
@synapses = @topic.synapses
@mappings = @topic.mappings
@synapses.each do |synapse|
synapse.mappings.each do |m|
@map = m.map
@map.touch(:updated_at)
m.delete
end
synapse.delete
end
@mappings.each do |mapping|
@map = mapping.map
@map.touch(:updated_at)
mapping.delete
end
@topic.delete
end
respond_to do |format|
format.json { head :no_content }
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end
end
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private
def topic_params
params.require(:topic).permit(:id, :name, :desc, :link, :permission, :user_id, :metacode_id)
end
end