Class: SearchResultsController

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

Overview

Copyright 2011 innoQ Deutschland GmbH

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.prepare_basic_variables(controller) ⇒ Object 



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# File 'app/controllers/search_results_controller.rb', line 89

def self.prepare_basic_variables(controller)
  label_langs = Iqvoc::Concept.labeling_class_names.values.flatten.map(&:to_s)
  langs = (Iqvoc.available_languages + label_langs).uniq.each_with_object({}) do |lang, hsh|
    lang ||= "none"
    hsh[lang] = I18n.t("languages.#{lang}", :default => lang)
  end
  controller.instance_variable_set(:@available_languages, langs)

  collections = Iqvoc::Collection.base_class.includes(:pref_labels).all
  controller.instance_variable_set(:@collections, collections)
end

Instance Method Details

#index ⇒ Object 



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# File 'app/controllers/search_results_controller.rb', line 19

def index
  authorize! :read, Concept::Base # TODO: I think a :search right would be
  # better here because you're able to serach more than only concepts.

  self.class.prepare_basic_variables(self)

  # Map short params to their log representation
  {:t => :type, :q => :query, :l => :languages, :qt => :query_type, :c => :collection_origin}.each do |short, long|
    params[long] ||= params[short]
  end

  # Select first type by default
  params[:type] = Iqvoc.searchable_class_names.first.parameterize unless params[:type]

  # Delete parameters which should not be included into generated urls (e.g.
  # in rdf views)
  request.query_parameters.delete("commit")
  request.query_parameters.delete("utf8")

  if params[:query]
    if params[:query].blank? && params[:collection_origin].blank?
      flash.now[:error] = I18n.t('txt.controllers.search_results.insufficient_data')
      render :action => 'index', :status => 422
      return
    end

    # Special treatment for the "nil language"
    params[:languages] << nil if params[:languages].is_a?(Array) && params[:languages].include?("none")

    # Ensure a valid class was selected
    unless type_class_index = Iqvoc.searchable_class_names.map(&:parameterize).index(params[:type].parameterize)
      raise "'#{params[:type]}' is not a valid / configured searchable class! Must be one of " + Iqvoc.searchable_class_names.join(', ')
    end
    klass = Iqvoc.searchable_class_names[type_class_index].constantize

    query_size = params[:query].split(/\r\n/).size

    if klass.forces_multi_query? || (klass.supports_multi_query? && query_size > 1)
      @multi_query = true
      @results = klass.multi_query(params)
      # TODO: Add a worst case limit here; e.g. when on page 2 (per_page == 50)
      # each sub-query has to return 100 objects at most.
      @klass = klass
    else
      @multi_query = false
      @results = klass.single_query(params)
    end

    if @multi_query
      @results = Kaminari.paginate_array(@results)
      logger.debug("Using multi query mode")
    else
      logger.debug("Using single query mode")
    end

    @results = @results.page(params[:page])

    if params[:limit] and Iqvoc.unlimited_search_results
      @results = @results.per(params[:limit].to_i)
    end

    respond_to do |format|
      format.html
      format.ttl { render('search_results/index.iqrdf') }
      format.rdf { render('search_results/index.iqrdf') }
    end

  end
end