嵌入式JS(ejs)不会将数据呈现给浏览器

时间:2018-03-18 20:21:37

标签: javascript node.js express pg-promise embedded-javascript

我正在使用express, node, pg-promise, and ejs.创建一个简单的待办事项应用程序我创建了一个数据库,但我无法在浏览器中显示内容。

奇怪的是,当我检查浏览器时,它会识别每个任务的形状,但除了<p>标签外,它们都是空的。 <h1>标签和内容显示出来,所以我认为这是一个比目鱼/鱿鱼问题,但我不太确定。

json数据出现了,但在切换到response.render并链接index.ejs文件后,我没有运气。

以下是文件结构的基本概述:

1. models
   - task.js
2. views
   - edit.ejs
   - index.ejs
   - new.ejs
   - show.ejs
3. server.ejs, package.json, form.html

数据库名称:todo_app

表名:任务

id | subject  |             content
----+----------+---------------------------------
  1 | planning | plot world domination
  2 | garden   | find victims for venus fly trap
  3 | food     | buy pickles
  4 | postman  | test post

注意:我在Postman中添加了第4号。

index.ejs

<body>
  <h1>Here's the task list:</h1>
  <% tasks.forEach((everyTask) => {%>
    <p>
      <%= tasks.content %>
    </p>
    <%})%>
</body>

</html>

server.js

const express = require('express');
const app = express();
const PORT = 3000;
const bodyParser = require('body-parser');
// const models = require('./models/task')

app.use(bodyParser.json())

const urlencodedParser = bodyParser.urlencoded({ extended: false })

app.set("view engine", "ejs");

const findAllTasks = require('./models/task').findAllTasks;
const findById = require('./models/task').findById;
const createTask = require('./models/task').createTask;
// const edit = require('./models/task').edit;
// const delete = require('./models/task').delete;


app.get('/', (request, response) => {
  findAllTasks().then(everyTask => {
    response.render('index', { tasks: everyTask });
  });
});


app.listen(PORT, () => {
  console.log(`Welcome to the Year ${PORT}, the world of tomorrow!`)
});

task.js

const pgp = require('pg-promise')({});

const connectionURL = "postgres://localhost:5432/todo_app";

const db = pgp(connectionURL);

const findAllTasks = () => {
  return db.any('SELECT * FROM tasks');
}

const findById = id => {
  return db.one('SELECT * FROM tasks WHERE id = $1', [id]);
};

const createTask = data => {
  return db.one('INSERT INTO tasks(subject, content) VALUES($[subject], $[content]) RETURNING id', data)
}

module.exports = {
  findAllTasks: findAllTasks,
  findById: findById,
  createTask: createTask
  // edit: edit,
  // delete: delete
};

1 个答案:

答案 0 :(得分:1)

我认为task.ejs代表index.ejs<body> <h1>Here's the task list:</h1> <% tasks.forEach((everyTask) => {%> <p> <%= everyTask.content %> </p> <%})%> </body> 。你的forEach应该如下:

window.SomeDeleteRowFunction = function SomeDeleteRowFunction(o) {
  var p = o.parentNode.parentNode;
  p.parentNode.removeChild(p);

  $('#tbl tr').each(function(i) {
    $(this).find('input').eq(0).attr("placeholder", i+1);
  });
}

$('document').ready(function() {
  $('.add_another').click(function() {
    $("#tbl").append('<tr><td><input type="text" class="txtbox" value="" placeholder="' + ($('#tbl tr').length + 1) + '"/></td><td><input type="button" value="Delete Row" onclick="SomeDeleteRowFunction(this)" /></td></tr>');
  });

});