来看看Meteor的功能

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来看看Meteor的功能

天飞 2016-05-16 14:25:44 浏览717 评论0

摘要: 看了一上午,感觉这确实比所谓传统的APP开发,有很多不一样的地方。 记录下来: simple-todos.css /* CSS declarations go here */ /* CSS declarations go here */ body { font-family: sans-s...

看了一上午,感觉这确实比所谓传统的APP开发,有很多不一样的地方。

记录下来:

simple-todos.css

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/* CSS declarations go here */
/* CSS declarations go here */
body {
  font-family: sans-serif;
  background-color: #315481;
  background-image: linear-gradient(to bottom, #315481, #918e82 100%);
  background-attachment: fixed;

  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;

  padding: 0;
  margin: 0;

  font-size: 14px;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  min-height: 100%;
  background: white;
}

header {
  background: #d2edf4;
  background-image: linear-gradient(to bottom, #d0edf5, #e1e5f0 100%);
  padding: 20px 15px 15px 15px;
  position: relative;
}

#login-buttons {
  display: block;
}

h1 {
  font-size: 1.5em;
  margin: 0;
  margin-bottom: 10px;
  display: inline-block;
  margin-right: 1em;
}

form {
  margin-top: 10px;
  margin-bottom: -10px;
  position: relative;
}

.new-task input {
  box-sizing: border-box;
  padding: 10px 0;
  background: transparent;
  border: none;
  width: 100%;
  padding-right: 80px;
  font-size: 1em;
}

.new-task input:focus{
  outline: 0;
}

ul {
  margin: 0;
  padding: 0;
  background: white;
}

.delete {
  float: right;
  font-weight: bold;
  background: none;
  font-size: 1em;
  border: none;
  position: relative;
}

li {
  position: relative;
  list-style: none;
  padding: 15px;
  border-bottom: #eee solid 1px;
}

li .text {
  margin-left: 10px;
}

li.checked {
  color: #888;
}

li.checked .text {
  text-decoration: line-through;
}

li.private {
  background: #eee;
  border-color: #ddd;
}

header .hide-completed {
  float: right;
}

.toggle-private {
  margin-left: 5px;
}

@media (max-width: 600px) {
  li {
    padding: 12px 15px;
  }

  .search {
    width: 150px;
    clear: both;
  }

  .new-task input {
    padding-bottom: 5px;
  }
}
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simple-todos.html

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<head>
  <title>Todo List</title>
</head>
 
<body>
  <div class="container">
    <header>
      <h1>Todo List({{incompleteCount}})</h1>
      <lable class="hide-completed">
        <input type="checkbox" checked="{{hideCompleted}}" />
        Hide Completed Tasks
      </lable>
      {{> loginButtons}}
      {{#if currentUser}}
      <form class="new-task">
        <input type="text" name="text" placeholder="Type to add new tasks" />
      </form>
      {{/if}}
    </header>
     
    <ul>
      {{#each tasks}}
        {{> task}}
      {{/each}}
    </ul>
  </div>
</body>
 
<template name="task">
  <li class="{{#if checked}}checked{{/if}} {{#if private}}private{{/if}}">
    <button class="delete">&times;</button>
    <input type="checkbox" checked="{{checked}}" class="toggle-checked" />
    {{#if isOwner}}
      <button class="toggle-private">
        {{#if private}}
          Private
        {{else}}
          Public
        {{/if}}
      </button>
    {{/if}}
    <span class="text"><strong>{{username}}</strong> - {{text}}</span>
  </li>
</template>
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simple-todos.js

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Tasks = new Mongo.Collection("tasks");

if (Meteor.isServer) {
  Meteor.publish("tasks", function() {
    return Tasks.find( {
     $or: [
        { private: {$ne: true }},
        { owner: this.userId }
        ]
    });
  });
}

if (Meteor.isClient) {
  Meteor.subscribe("tasks");

  Template.body.helpers({
    tasks: function(){
      if (Session.get("hideCompleted")) {
        return Tasks.find({checked: {$ne: true}}, {sort: {createdAt: -1}});
        }else{
          return Tasks.find({}, {sort: {createdAt: -1}});
        }
      },
      hideCompleted: function(){
        return Session.get("hideCompleted");
      },
      incompleteCount: function(){
        return Tasks.find({checked: {$ne: true}}).count();
      }
  });

  Template.body.events({
    "submit .new-task": function (event) {
    event.preventDefault();

    var text = event.target.text.value;
    
    Meteor.call("addTask", text);
    event.target.text.value = "";
    },
    "change .hide-completed input": function(event){
      Session.set("hideCompleted", event.target.checked);
    }
  });
  
  Template.task.helpers({
    isOwner: function() {
      return this.owner === Meteor.userId();
    }
  });

  Template.task.events({
    "click .toggle-checked": function(){
      Meteor.call("setChecked", this._id, ! this.checked);
    },
    "click .delete": function(){
      Meteor.call("deleteTask", this._id);
    },
    "click .toggle-private": function() {
      Meteor.call("setPrivate", this._id, ! this.private);
    }
  });
  Accounts.ui.config({
    passwordSignupFields: "USERNAME_ONLY"
  });
}

Meteor.methods({

  addTask: function(text) {
    if (! Meteor.userId()) {
      throw new Methor.Error("not-authorized");
    }

    Tasks.insert({
      text: text,
      createdAt: new Date(),
      owner: Meteor.userId(),
      username: Meteor.user().username
    });
  },

  deleteTask: function(taskId) {
    var task = Tasks.findOne(taskId);
    if (task.private && task.owner !== Meteor.userId()) {
      throw new Meteor.Error("not-authorized");
    }

    Tasks.remove(taskId);
  },

  setChecked: function(taskId, setChecked) {
    var task = Tasks.findOne(taskId);
    if (task.private && task.owner !== Meteor.userId()) {
      throw new Meteor.Error("not-authorized");
    }

    Tasks.update(taskId, {$set: { checked: setChecked} });
  },

  setPrivate: function(taskId, setToPrivate) {
    var task = Tasks.findOne(taskId);
    if (task.owner !== Meteor.userId()) {
      throw new Meteor.Error("not-authorized");
    }
    Tasks.update(taskId, { $set: { private: setToPrivate } });
  }
});
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