Class: TopicsController

Inherits:
ApplicationController show all
Defined in:
app/controllers/topics_controller.rb

Instance Method Summary collapse

Instance Method Details

#index ⇒ Object 



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# File 'app/controllers/topics_controller.rb', line 8

def index
  @app = Gbapplication.find_by_name(params[:gbapp]) if params[:gbapp]
  if @app.nil?
    logger.error "Gbapplication '#{params[:gbapp]}' not found"
    head :bad_request
    return
  end

  respond_to do |format|
    format.json do
      render :json => Topic.list(@app, current_ability, host_zone(request.host), wms_host)
    end
  end
end

#legend ⇒ Object 



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# File 'app/controllers/topics_controller.rb', line 103

def legend
  #TODO: -> show?mode=legend
  @topic = Topic.includes(:layers).where(:name => params[:id]).first
  @topic ||= Topic.includes(:layers).find(params[:id])
  authorize! :show, @topic
  render :layout => false
end

#prepJson ⇒ Object 



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# File 'app/controllers/topics_controller.rb', line 84

def prepJson
  query_results = {}
  @query_topics.each do |query_topic|
    layer_results = {}
    query_topic['results'].each do |result|
      layer_results[result[0][:name]] = result
    end
    query_results[query_topic['topicobj'].name] = layer_results
  end

  {  
    :results => query_results,
    :height => @height,
    :x => @xx,
    :y => @yy
  }.to_json

end

#query ⇒ Object 



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# File 'app/controllers/topics_controller.rb', line 33

def query
  client_srid = params[:srid].blank? ? GeoModel.default_client_srid : params[:srid].to_i
  @client_srid = client_srid

  # optional parameter to return only the feature nearest to the center of the search geometry, if no custom layer query is used
  # use layer setting by default
  nearest = params['nearest'].nil? ? nil : params['nearest'] == 'true'

  @query_topics = ActiveSupport::JSON.decode(params[:infoQuery])['queryTopics']
  #e.g. [{"layers"=>"lk25,grenzen,gemeindegrenzen,seen,wald,haltestellen", "divCls"=>"legmain", "level"=>"main", "topic"=>"BASISKARTEZH"}, {"layers"=>"", "divCls"=>"legover", "level"=>"over", "topic"=>"AVParzOverlayZH"}]
  @query_topics.each do |query_topic|
    topic = Topic.where(:name => query_topic['topic']).first
    authorize! :show, topic
    query_topic['topicobj'] = topic
    if params['bbox']
      query_topic['results'] = topic.query(current_ability, query_topic, params['bbox'], nearest, current_user, client_srid)
    elsif params['rect']
      x1, y1, x2, y2 = params['rect'].split(',').collect(&:to_f)
      rect = "POLYGON((#{x1} #{y1}, #{x1} #{y2}, #{x2} #{y2}, #{x2} #{y1} ,#{x1} #{y1}))"
      query_topic['results'] = topic.query(current_ability, query_topic, rect, nearest, current_user, client_srid)
    elsif params['circle']
      query_topic['results'] = topic.query(current_ability, query_topic, params['circle'], nearest, current_user, client_srid)
    elsif params['poly']
      query_topic['results'] = topic.query(current_ability, query_topic, params['poly'], nearest, current_user, client_srid)
    else
      # problem
    end
  end
  if params['bbox']
    x1, y1, x2, y2 = (params['bbox']).split(',').collect(&:to_f)
    @xx = (x1 + x2) / 2.0
    @yy = (y1 + y2) / 2.0
    @height = 0 #Dtm.getHeight(params['bbox'])
  else
    @xx = 0
    @yy = 0
    @height = 0
  end

  respond_to do |format|
    format.html { render :layout => false }

    format.json do
       render :json => prepJson
    end
    format.jsonp do
      render :json => prepJson, :callback => params[:callback]
    end
  end
end

#show ⇒ Object

TODO: obsolete?



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# File 'app/controllers/topics_controller.rb', line 23

def show #TODO: obsolete?
  @topic = Topic.includes(:layers).find(params[:id])

  respond_to do |format|
    format.json do
      render :json => @topic.to_json(:include => :layers)
    end
  end
end