test

package controllers;

import java.util.ArrayList;
import java.util.List;

import models.Problem;
import models.Tag;
import models.User;

import play.data.validation.Validation;
import play.mvc.*;

public class Application extends Controller {
	
	//默认每页显示20个
	private static final int PAGESIZE = 20;
	
	//搜索类型：问题概述
	private static final String SUMMARY = "summary";
	
	//搜索类型：提出人
	private static final String AUTHOR = "author";
	
	//搜索类型：分类标签
	private static final String TYPE = "type";
	
	@Before
    static void setConnectedUser() {
        if(Security.isConnected()) {
            renderArgs.put("user", Security.connected());
        }
        renderArgs.put("tagsCloud", Tag.getCloud());
        renderArgs.put("usersCloud", User.all().fetch());
    }
	
	/**
	 * 首页
	 */
    public static void index() {
    	search("", SUMMARY, 1);
    }

    /**
     * 问题detail显示
     * @param id
     */
    public static void show(Long id) {
    	Problem problem = Problem.findById(id);
    	render(problem);
    }
    
    /**
     * 新的问题提交
     */
    public static void newPost() {
    	List<user> users = User.findAll();
    	List<tag> tags = Tag.findAll();
    	render(users, tags);
    }
    
    /**
     * 增加问题
     * @param id
     */
    @SuppressWarnings("deprecation")
	public static void addPost(String summary, String code, String solution, String note, Long userId) {
    	User user = User.findById(userId);
    	Problem problem = new Problem(summary, code, solution, note, user).save();
    	show(problem.id);
    }
    
    /**
     * 搜索
     * @param key
     */
    public static void search(String key, String type, int page) {
    	List<problem> problems = new ArrayList<problem>();
    	//总数
    	int total = 0;
    	
    	if(SUMMARY.equals(type)) {
    		problems = Problem.find("summary like ? order by postedAt desc", "%" + key.toLowerCase() + "%").from((page - 1) * PAGESIZE).fetch(PAGESIZE);
    		total = Problem.find("summary like ?", "%" + key.toLowerCase() + "%").fetch().size();
    	} else if(AUTHOR.equals(type)){
    		problems = Problem.find("select p from Problem p, User u where u.name like ? and p.user = u order by postedAt desc" , "%" + key + "%").from((page - 1) * PAGESIZE).fetch(PAGESIZE);
    		total = Problem.find("select p from Problem p, User u where u.name like ? and p.user = u" , "%" + key + "%").fetch().size();
    	} else if(TYPE.equals(type)){
    		problems = Problem.find(
    		        "select distinct p from Problem p join p.tags as t where t.name like ? order by postedAt desc", "%" + key.toLowerCase() + "%").from((page - 1) * PAGESIZE).fetch(PAGESIZE);
    		total = Problem.find("select distinct p from Problem p join p.tags as t where t.name like ?", "%" + key.toLowerCase() + "%").fetch().size();
    	}
    	//总页数
    	int pageCount = (total + PAGESIZE - 1) / PAGESIZE;
    	render("Application/index.html", problems, page, total, pageCount, key, type);
    }
    
    /**
     * 列出标签下所有的问题
     * @param tag
     */
    public static void listTagged(String tag) {
        List<problem> problems = Problem.findTaggedWith(tag);
        render(tag, problems);
    }
    
    public static void form(Long id) {
    	List<tag> allTags = Tag.all().fetch();
    	if(id != null) {
    		Problem problem = Problem.findById(id);
            render(problem, allTags);
        }
        render(allTags);
    }
     
    @SuppressWarnings("deprecation")
	public static void save(Long id, String summary, String code, String solution, String note, List<string> tags) {
    	Problem problem;
    	//保证session过期后用户提交表单不会出错
    	validation.isTrue(Security.connected() != null).message("请登录后再新增问题!记得保存当前页面内容");
        if(id == null) {
        	User author = User.find("byName", Security.connected()).first();
            problem = new Problem(summary, code, solution, note, author);
        } else {
            // Retrieve post
        	problem = Problem.findById(id);
            // Edit
        	problem.summary = summary;
        	problem.code = code;
        	problem.solution = solution;
        	problem.note = note;
        	problem.tags.clear();
        }
        // Set tags list
        if(tags != null &amp;&amp; tags.size() &gt; 0) {
        	for(String tag : tags) {
        		if(tag.trim().length() &gt; 0) {
        			problem.tags.add(Tag.findOrCreateByName(tag));
        		}
        	}
        }
        // Validate
        validation.valid(problem);
        if(Validation.hasErrors()) {
            render("@form", problem);
        }
        // Save
        problem.save();
        show(problem.id);
    }
}</string></tag></problem></problem></problem></tag></user>