因為目前系統需要使用到 vis.js 套件（簡單說裡面有很多視覺化效果的模組）
其實也可以看 這位大大 的寫法直接使用
- 到 Gemfile 中新增下列這行
gem 'visjs-rails' - 新增後，至終端機鍵入
bundle ( or bundle install ) - 到app/assets/javascripts/application.js
鍵入//= require vis - 再到app/aassets/stylesheets/資料夾中
新增 style.css.scss 這個檔案
並內容鍵入@import "vis"; - 到config/initializers/assets.rb中新增
Rails.application.config.assets.precompile += %w( timeline/* network/* ) - 這個時候將下列程式碼貼在你建立的網頁中貼上此（這也是官方範例）
<head>
<style type="text/css">-->
html, body {
font: 11pt arial;
}
h1 {
font-size: 150%;
margin: 5px 0;
}
h2 {
font-size: 100%;
margin: 5px 0;
}
table.view {
width: 100%;
}
table td {
vertical-align: top;
}
table table {
background-color: #f5f5f5;
border: 1px solid #e5e5e5;
}
table table td {
vertical-align: middle;
}
input[type=text], pre {
border: 1px solid lightgray;
}
pre {
margin: 0;
padding: 5px;
font-size: 10pt;
}
#network {
width: 100%;
height: 400px;
border: 1px solid lightgray;
}
</style>
<script type="text/javascript">
var nodes, edges, network;
// convenience method to stringify a JSON object
function toJSON(obj) {
return JSON.stringify(obj, null, 4);
}
function addNode() {
try {
nodes.add({
id: document.getElementById('node-id').value,
label: document.getElementById('node-label').value
});
}
catch (err) {
alert(err);
}
}
function updateNode() {
try {
nodes.update({
id: document.getElementById('node-id').value,
label: document.getElementById('node-label').value
});
}
catch (err) {
alert(err);
}
}
function removeNode() {
try {
nodes.remove({id: document.getElementById('node-id').value});
}
catch (err) {
alert(err);
}
}
function addEdge() {
try {
edges.add({
id: document.getElementById('edge-id').value,
from: document.getElementById('edge-from').value,
to: document.getElementById('edge-to').value
});
}
catch (err) {
alert(err);
}
}
function updateEdge() {
try {
edges.update({
id: document.getElementById('edge-id').value,
from: document.getElementById('edge-from').value,
to: document.getElementById('edge-to').value
});
}
catch (err) {
alert(err);
}
}
function removeEdge() {
try {
edges.remove({id: document.getElementById('edge-id').value});
}
catch (err) {
alert(err);
}
}
function draw() {
// create an array with nodes
nodes = new vis.DataSet();
nodes.on('*', function () {
document.getElementById('nodes').innerHTML = JSON.stringify(nodes.get(), null, 4);
});
nodes.add([
{id: '1', label: 'Node 1'},
{id: '2', label: 'Node 2'},
{id: '3', label: 'Node 3'},
{id: '4', label: 'Node 4'},
{id: '5', label: 'Node 5'}
]);
// create an array with edges
edges = new vis.DataSet();
edges.on('*', function () {
document.getElementById('edges').innerHTML = JSON.stringify(edges.get(), null, 4);
});
edges.add([
{id: '1', from: '1', to: '2'},
{id: '2', from: '1', to: '3'},
{id: '3', from: '2', to: '4'},
{id: '4', from: '2', to: '5'}
]);
// create a network
var container = document.getElementById('network');
var data = {
nodes: nodes,
edges: edges
};
var options = {
edges:{
arrows: 'to',
color: 'red',
font: '12px arial #ff0000',
scaling:{
label: true,
},
shadow: true,
smooth: true,
}
};
network = new vis.Network(container, data, options);
}
</script>
<!--<script src="../googleAnalytics.js"></script>-->
</head>
<body onload="draw();">
<p>
<!-- This example demonstrates dynamically adding, updating and removing nodes
and edges using a DataSet. -->
</p>
<h1>Adjust</h1>
<table>
<tr>
<td>
<h2>Node</h2>
<table>
<tr>
<td></td>
<td><label for="node-id">Id</label></td>
<td><input id="node-id" type="text" value="6"></td>
</tr>
<tr>
<td></td>
<td><label for="node-label">Label</label></td>
<td><input id="node-label" type="text" value="Node 6"></td>
</tr>
<tr>
<td></td>
<td>Action</td>
<td>
<button id="node-add" onclick="addNode();">Add</button>
<button id="node-update" onclick="updateNode();">Update</button>
<button id="node-remove" onclick="removeNode();">Remove</button>
</td>
</tr>
</table>
</td>
<td>
<h2>Edge</h2>
<table>
<tr>
<td></td>
<td><label for="edge-id">Id</label></td>
<td><input id="edge-id" type="text" value="5"></td>
</tr>
<tr>
<td></td>
<td><label for="edge-from">From</label></td>
<td><input id="edge-from" type="text" value="3"></td>
</tr>
<tr>
<td></td>
<td><label for="edge-to">To</label></td>
<td><input id="edge-to" type="text" value="4"></td>
</tr>
<tr>
<td></td>
<td>Action</td>
<td>
<button id="edge-add" onclick="addEdge();">Add</button>
<button id="edge-update" onclick="updateEdge();">Update</button>
<button id="edge-remove" onclick="removeEdge();">Remove</button>
</td>
</tr>
</table>
</td>
</tr>
</table>
<h1>View</h1>
<table class="view">
<colgroup>
<col width="25%">
<col width="25%">
<col width="50%">
</colgroup>
<tr>
<td>
<h2>Nodes</h2>
<pre id="nodes"></pre>
</td>
<td>
<h2>Edges</h2>
<pre id="edges"></pre>
</td>
<td>
<h2>Network</h2>
<div id="network"></div>
</td>
</tr>
</table>
</body>
重開rails app 首頁若有出現下圖
基本上是妥當了
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