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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

By : Ray Rischpater, Brian Ritchie
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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

1 (2)
By: Ray Rischpater, Brian Ritchie

Overview of this book

If you're writing applications that move structured data from one place to another, this book is for you. This is especially true if you've been using XML to do the job because it's entirely possible that you could do much of the same work with less code and less data overhead in JSON. While the book's chapters make some distinction between the client and server sides of an application, it doesn't matter if you're a frontend, backend, or full-stack developer. The principles behind using JSON apply to both the client and the server, and in fact, developers who understand both sides of the equation generally craft the best applications.
Table of Contents (12 chapters)
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11
Index

Searching for a document in CouchDB with Node.js and Cradle


Searching for a document in CouchDB is a matter of querying a specific view for a specific key. The Cradle module defines the view function to do this.

How to do it...

You'll pass the URL of the view for the query you want to execute, and then pass the key for which you're searching as the key parameter, like this:

var call = "kf6gpe-7";
db.view('stations/byCall/key="' + call + '"', 
  function (error, result) {
    if (result) {
      result.forEach(function (row) {
        console.log(row);
});

In addition to passing the view and key you're looking for, you must pass a callback function that handles the result.

How it works…

Here, we're searching the byCall view for a call sign of kf6gpe-7. Recall from the last recipe that the view consists of a map of call signs in the call field to records; when we issue the view request with the database's view method, it searches that map for records with keys matching kf6gpe-7, and returns a result...

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