app/controllers/static_pages_controller.rb

static_pages_controller.rb

# -*- coding: utf-8 -*-
require 'open3'
require 'json'

class StaticPagesController < ApplicationController
  # 検索画面に相当するアクション
  def search
  end

  # 検索結果画面に相当するアクション
  def result
    command = Rails.root.to_s + "/lib/crawler/google_scholar_crawler.py"
    query = params[:search_string]
    if query.strip! == ""
      return
    end
    query = query.gsub(/(\s|　)+/, "+")

    @text_field_val = params[:search_string] if params[:search_string]

    command += " " + query
    out, err, status = Open3.capture3(command)

    json = JSON.parser.new(out)
    @articles = json.parse() # JSONをパースして得られたオブジェクト

    @@graph = {nodes: {}, edges: {}} # 今回JavaScript側に送りたいJSON
    @articles.each do |article|
      cid = article["cluster_id"][0].to_s
      @@graph[:nodes][cid] = {}

      @@graph[:edges][cid] = {}
      citation = article["citation"][0]
      citation.each do |cit|
        @@graph[:edges][cid][cid + "_" + cit["num"].to_s] = {directed: true, weight: 3}
      end
    end

  end

  # JSONをJavaScript側に送るためのアクション
  def get_citation
    render :json => @@graph # JSONを返す
  end
end