简单的流星插入不起作用 [英] Simple meteor insert not working
问题描述
我刚刚开始使用 Meteor，无法获取以下代码，用于在触发事件时更新数据库的简单 Collection.insert.我什至可以看到页面在消失之前用文本字段的值更新了几秒钟(大概是一旦 Meteor 意识到该值没有写入服务器).通过控制台插入工作正常......是否有一些我忽略的基本概念?
I am just getting started messing around with Meteor and can't get the following code for a simple Collection.insert to update the database when the event is triggered. I can even see the page update with the value of the text field for a split-second before disappearing (presumably once Meteor realized the value wasn't written to the server). Inserting via the console works just fine... Is there some basic concept that I am overlooking?
文件.js
var Tasks = new Meteor.Collection("Tasks");
if (Meteor.isClient) {
Template.main.task = function() {
return Tasks.find({});
};
Template.main.events = {
'click #submit' : function(event) {
var task = document.getElementById("text").value;
Tasks.insert({title: task});
}
};
}
文件.html
<body>
{{> main}}
</body>
<template name="main">
<form class="form-inline">
<input type="text" id="text" class="input-small" />
<input type="Submit" class="btn" id="submit" value="Submit"/>
</form>
{{#each task}}
<span id="output">{{title}}</span>
{{/each}}
</template>
推荐答案
在执行 javascript 以取消对服务器的请求之前，您的提交按钮会发出页面重新加载.
Your submit button issues a page reload before your javascript is executed canceling your request to the server.
尝试使用mousedown"而不是click"或(更好)防止按钮重新加载页面.
Try using 'mousedown' instead of 'click' or (much better) prevent the button from doing a page reload.
尝试使用此代码段，它会禁用按钮的提交，因此仅执行您的 javascript.
Try using this snippet, it disables the submit for the button so only your javascript is executed.
<body>
{{> main}}
</body>
<template name="main">
<form class="form-inline">
<input type="text" id="text" class="input-small" />
<button type="button" class="btn" id="submit">Submit</button>
</form>
{{#each task}}
<span id="output">{{title}}</span>
{{/each}}
</template>
我将您的第二个 <input>-tag 更改为 button 并将其 type 属性设置为 'button' 以使按钮不执行任何操作.
I changed your second <input>-tag to button and set it's type attribute to 'button' to make the button do nothing.
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