页面渲染模块的作用是将我们从后台获取到的数据渲染到html页面上。为此,我们采用了geogle的开源html模板库ctemplate,具体介绍可以百度。
我使用的是码云上大神编译好的(只支持centOS7),其他环境需要自己编译。
centos7版本,可以直接用
其他环境就需要自己在github上下载源码自己编译
#pragma once
#include "ctemplate/template.h"
#include <string>
#include <vector>
#include "oj_model.hpp"
class OjView
{
public:
//渲染html页面,并且返回页面·
static void ExpandAllQuestionsHtml(std::string* html, std::vector<Question>& ques) {
//获取数据字典-》将拿到的试题数据按照一定顺序保存到内存中
ctemplate::TemplateDictionary dict("all_questions");
for (const auto& que: ques) {
ctemplate::TemplateDictionary* section_dict = dict.AddSectionDictionary("question");
section_dict->SetValue("id", que._id);
section_dict->SetValue("id", que._id);
section_dict->SetValue("name", que._name);
section_dict->SetValue("star", que._star);
}
//2.获取模板类的类指针,加载预定义的html页面到内存中
ctemplate::Template* tl = ctemplate::Template::GetTemplate("./template/all_questions.html", ctemplate::DO_NOT_STRIP);
//3.渲染,拿着模板类的指针,将数据字典当中的数据更新到html页面中
tl->Expand(html, &dict);
}
//id name star desc header
//ti'mu
static void ExpandOneQuestion(const Question ques, std::string& desc, std::string& header, std::string* html)
{
ctemplate::TemplateDictionary dict("question");
dict.SetValue("id", ques._id);
dict.SetValue("name", ques._name);
dict.SetValue("star", ques._star);
dict.SetValue("desc", desc);
dict.SetValue("header", header);
ctemplate::Template* tpl = ctemplate::Template::GetTemplate("./template/question.html", ctemplate::DO_NOT_STRIP);
tpl->Expand(html, &dict);
}
static void ExpandReason(const std::string& errorno, const std::string& reason, const std::string& stdout_reason, std::string* html)
{
ctemplate::TemplateDictionary dict("reason");
dict.SetValue("errono", errorno);
dict.SetValue("reason", reason);
dict.SetValue("stdout", stdout_reason);
ctemplate::Template* tpl = ctemplate::Template::GetTemplate("./template/reason.html", ctemplate::DO_NOT_STRIP);
tpl->Expand(html, &dict);
}
};