Book Image

Meteor Cookbook

By : Isaac Strack
Book Image

Meteor Cookbook

By: Isaac Strack

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Meteor Cookbook
Isaac Strack
May, 2015 | 364 pages
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Table of Contents (19 chapters)
Meteor Cookbook
Meteor Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Optimizing Your Workflow
Optimizing Your Workflow
Introduction
Installing Meteor
Finding documentation for Meteor
Getting help with questions
Setting up your project file structure
Setting up your development environment
Using the web console
Deploying a test app to Meteor
Deploying to Meteor using a CNAME redirect
Deploying to a custom hosted environment
Deploying with Meteor Up (MUP)
Using CoffeeScript
Using CSS compilers
2
Customizing with Packages
Customizing with Packages
Introduction
Adding Meteor packages
Removing Meteor packages
Discovering new packages with Atmosphere
Creating a multipage application with Iron Router
Building a custom package
Using npm modules
Publishing custom packages to Atmosphere
3
Building Great User Interfaces
Building Great User Interfaces
Introduction
Inserting templates with Spacebars
Inserting raw HTML using triple braces
Creating dynamic lists
Building a smooth interface with Bootstrap
Creating customized global helpers
Creating custom components
Using reactivity with HTML attributes
Using dynamic templates
Animating DOM elements
4
Creating Models
Creating Models
Introduction
Implementing a simple collection
Using the Session object
Sorting with MongoDB queries
Filtering with MongoDB queries
Creating upsert MongoDB queries
Implementing a partial collection
5
Implementing DDP
Implementing DDP
Introduction
Reading the DDP stream
Using client-only collections
Implementing multiserver DDP
Integrating DDP with other technologies
6
Mastering Reactivity
Mastering Reactivity
Introduction
Creating and consuming a reactive value
Using Ajax query results in ReactiveVar
Making a custom library reactive
Updating Blaze templates without Mongo
Using inline data to modify UI elements reactively
Integrating a jQuery UI
7
Using Client Methods
Using Client Methods
Introduction
Creating dynamic graphs with SVG and Ajax
Using the HTML FileReader to upload images
Creating a coloring book with the Canvas element
8
Integrating Third-party Libraries
Integrating Third-party Libraries
Introduction
Using npm packages directly
Building graphs with D3.js
Creating cutting-edge UIs with Polymer
9
Securing Your Application
Securing Your Application
Introduction
Basic safety – turning off autopublish
Basic safety – removing insecure
Securing data transactions with allow and deny
Hiding data with façades
Protecting the client with browser-policy
10
Working with Accounts
Working with Accounts
Introduction
Implementing OAuth accounts packages
Customizing the accounts login
Performing two-factor authentication
11
Leveraging Advanced Features
Leveraging Advanced Features
Introduction
Building custom server methods
Creating custom EJSON objects
Handling asynchronous events
Using asynchronous functions
12
Creating Useful Projects
Creating Useful Projects
Introduction
Creating RESTful web services
Creating a complete app with Iron Router
Deploying apps to mobile devices
Adding social sharing
Index
Index

Filtering with MongoDB queries

Whether you're performing searches, organizing records, or narrowing down results, sooner or later, you'll want to filter the results of your collections. This recipe shows you how to limit the number of records in a collection, using MongoDB's find method options.

Getting ready

We will use the project created in the Sorting with MongoDB queries recipe, found in this chapter. Please complete that recipe, and use the files as a baseline for this recipe.

How to do it…

To filter MongoDB queries, proceed with the following steps:

  1. Make the following change to the comments helper function in [project root]/client/scripts/main.js:

    Template.hello.helpers({
  ...
  comments: function () {
    return Comments.find({number:/[2468]/},{sort:{number:-1}});
  },
  ...
});

  2. Save main.js and start Meteor if necessary. Navigate to http://localhost:3000/; click the button on the screen several times and watch as only the comments that contain an even number are displayed. Your results...

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