GoogleSheet2Json (inspired from "TableTop") allows to use Google Sheets as a simple CMS

GoogleSheet2Json takes a Google Spreadsheet and makes it easily accessible through JavaScript. With zero dependencies! If you've ever wanted to get JSON from a Google Spreadsheet without jumping through a thousand hoops, welcome home.

GoogleSheet2Json easily integrates Google Spreadsheets with templating systems and anything else that is hip and cool. It will also help you make new friends and play jazz piano.

Like how easy?

Step One: make a Google Spreadsheet and "Publish to Web." It doesn't matter what publishing method you pick.

Step Two: Write a page that invokes Tabletop with the published URL Google gives you.

function init() {
  Tabletop.init({
    key:
      "https://docs.google.com/spreadsheets/d/0AmYzu_s7QHsmdDNZUzRlYldnWTZCLXdrMXlYQzVxSFE/pubhtml",
    callback: function(data, tabletop) {
      console.log(data);
    },
    simpleSheet: true
  });
}
window.addEventListener("DOMContentLoaded", init);

Step Two, modern-er version: We've moved to the future (aka like a decade ago) by supporting promises.

function init() {
  Tabletop.init({
    key:
      "https://docs.google.com/spreadsheets/d/0AmYzu_s7QHsmdDNZUzRlYldnWTZCLXdrMXlYQzVxSFE/pubhtml",
    simpleSheet: true
  }).then(function(data, tabletop) {
    console.log(data);
  });
}
window.addEventListener("DOMContentLoaded", init);

Step Three: Enjoy your data!

[
  { name: "Carrot", category: "Vegetable", healthiness: "Adequate" },
  { name: "Pork Shoulder", category: "Meat", healthiness: "Questionable" },
  { name: "Bubblegum", category: "Candy", healthiness: "Super High" }
];

Yes, it's that easy.

NOTE: If your share URL has a /d/e in it, try refreshing the page to see if it goes away. If it doesn't, try this.

Getting Started

1) Publishing your Google Sheet

The first step is to get your data out into a form Tabletop can digest

Make a Google Spreadsheet. Give it some column headers, give it some content.

Name            Category   Healthiness
Carrot          Vegetable  Adequate
Pork Shoulder   Meat       Questionable
Bubblegum       Candy      Super High

Now go up to the File menu and pick Publish to the web. Fiddle with the options, then click Start publishing. A URL will appear, something like https://docs.google.com/spreadsheets/d/1pVp5uwv405TRNBnBXhZPJzstx614fV8KQ3TZvaLzNAc/pubhtml .

Now that you've published your sheet, you now need to share it, too.

1. Click the Share link in the upper right-hand corner
2. Click the very pale Advanced button
3. Change... access to "On - Anyone with a link"
4. Make sure Access: Anyone says Can view, since you don't want strangers editing your data
5. Click Save

Copy the Link to Share. Your URL should look something like https://docs.google.com/spreadsheets/d/1pVp5uwv405TRNBnBXhZPJzstx614fV8KQ3TZvaLzNAc/edit?usp=sharing. It should not have a /d/e in it.

2) Setting up Tabletop

TODO : update this section to use npm package.

Now you're going to feed your spreadsheet into Tabletop.

Include the Tabletop JavaScript file in your HTML, then try the following, substituting your URL for publicSpreadsheetUrl

<script src="https://cdnjs.cloudflare.com/ajax/libs/tabletop.js/1.5.1/tabletop.min.js"></script>
<script type="text/javascript">
  var publicSpreadsheetUrl =
    "https://docs.google.com/spreadsheets/d/1sbyMINQHPsJctjAtMW0lCfLrcpMqoGMOJj6AN-sNQrc/pubhtml";

  function init() {
    Tabletop.init({
      key: publicSpreadsheetUrl,
      callback: showInfo,
      simpleSheet: true
    });
  }

  function showInfo(data, tabletop) {
    alert("Successfully processed!");
    console.log(data);
  }

  window.addEventListener("DOMContentLoaded", init);
</script>

After Tabletop reads your Sheet, it hops to the showInfo function with your data. Open up your console and check out the data it retrieved. All of those rows were turned right into objects! See how easy that was?

3) Honestly, that's it

Check out the reference and the examples, but basically you're set. The only thing to think about right now is if you want to deal with multiple sheets you can get rid of simpleSheet: true (more on that later).

You might also be interested in the publishing/republishing/publish-as-it-changes aspects of Google Spreadsheets, but you'll need to google that for any specifics.

A note on node

To use this in a node environment:

npm install tabletop -save

Copy and paste this in your index.js file:

const Tabletop = require("tabletop");

var publicSpreadsheetUrl =
  "URL OF SPREADSHEET AS YOU FIND IN THE BROWSER ADDRESS BAR";

function init() {
  Tabletop.init({
    key: publicSpreadsheetUrl,
    callback: showInfo,
    simpleSheet: false
  });
}

function showInfo(data, tabletop) {
  // do something with the data
  console.log(JSON.stringify(data, null, 2));
}

//initialise and kickstart the whole thing.
init();

Reference

Tabletop initialization

The simplest Tabletop initialization works like this:

var tabletop = Tabletop.init({
  key: "1sbyMINQHPsJctjAtMW0lCfLrcpMqoGMOJj6AN-sNQrc",
  callback: showInfo
});

You pass in either key as the actual spreadsheet key, or just the full published-spreadsheet URL.

showInfo is a function elsewhere in your code that gets called with your data.

Depending on how recently you've published your spreadsheet, your key comes from different places. Either the spreadsheet's URL in the address bar, the Publish URL, or the Share URL. Read this

Tabletop initialization options

key

key is the key of the published spreadsheet or the URL of the published spreadsheet.

callback

callback is the callback for when the data has been successfully pulled. It will be passed an object containing the models found in the spreadsheet (worksheets => models), and the tabletop instance. Each of these models contains the rows on that worksheet (see Tabletop.Model). If simpleSheet is turned on it simply receives an array of rows of the first worksheet.

simpleSheet

simpleSheet can be true or false (default false). It assumes you have one table and you don't care what it's called, so it sends the callback an array of rows instead of a list of models. Peek at the examples for more info.

parseNumbers

parseNumbers can be true or false (default false). If true, Tabletop will automatically parse any numbers for you so they don't run around as strings.

error

error is the callback for when something goes wrong. I'm uncertain how well it works in the browser in all situations, but in our Modern World I'm pretty sure it can be relied on.

orderby

orderby asks Google to sort the results by a column. You'll need to strip spaces and lowercase your column names, i.e. {order: 'firstname'} for a column called First Name. You'll want to use this when you only have a single sheet, though, otherwise it will try to sort by the same column on every single sheet.

reverse

reverse reverses the order if set to true.

postProcess

postProcess is a function that processes each row after it has been created. Use this to rename columns, compute attributes, etc.

For example:

 postProcess: function(element) {
   // Combine first and last name into a new column
   element["full_name"] = element["first_name"] + " " + element["last_name"];

   // Convert string date into Date date
   element["timestamp"] = Date.parse(element["displaydate"]);
 }

wanted

wanted is an array of sheets you'd like to pull. If you have 20 sheets in a public spreadsheet you might as well only pull what you need to access. See the example in simple/multiple.html. Defaults to all.

endpoint

endpoint is the protocol and domain you'd like to query for your spreadsheet. Defaults to https://spreadsheets.google.com.

singleton

singleton assigned the instantiated Tabletop object to Tabletop.singleton, implemented to simplify caching and proxying of requests. Defaults to false.

simple_url

simpleUrl, if true, changes all requests to KEY and KEY-SHEET_ID. Defaults to false.

proxy

proxy allows you to easily use spreadsheets not located on Google Spreadsheet servers. Setting proxy: "http://www.proxy.com" is equivalent to setting { simple_url: true, singleton: true, endpoint: "http://www.proxy.com" }. Flatware might provide better documentation.

wait

wait prevents tabletop from pulling the Google spreadsheet until you're ready. Used in the backbone.js example.

~~query~~

~~query sends a structured query along with the spreadsheet request, so you can ask for rows with age > 55 and the like. Right now it's passed with every request, though, so if you're using multiple tables you'll end up in Problem City. It should work great with simpleSheet situations, though.~~ Doesn't want to work at the moment.

debug

debug returns on debug mode, which gives you plenty of messaging about what's going on under the hood.

authkey

authkey is the authorization key for private sheet support.

parameterize

parameterize changes the src of all injected scripts. Instead of src, src is URI encoded and appended to parameterize, e.g. set it to http://example.herokuapp.com/?url=. Mostly for gs-proxy.

callbackContext

callbackContext sets the this for your callback. It's the tabletop object by default.

prettyColumnNames

prettyColumnNames can be true or false (default to true, unless proxy is enabled†). Since Google doesn't pass us exactly the same column names as in the header ('$ Processed' becomes 'processed'), it takes an extra request to correct them. If you don't want the extra request, you'll want to set it to false

† prettyColumnNames doesn't work with Flatware, is why we disable it with a proxy by default

Tabletop object attributes and methods

Once you're in the callback, you get the data and a tabletop object. That object is capable of all sorts of fun things.

.sheets()

.sheets() are the Tabletop.Models that were populated, one per worksheet. You access a sheet by its name.

.sheets(name) is how you access a specific sheet. Say I have a worksheet called Cats I Know, I'll access it via tabletop.sheets("Cats I Know")

.modelNames

.modelNames are the names of the models [read: sheets] that Tabletop knows about. The sheet names do not reflect their ordering in the original spreadsheet.

.foundSheetNames

.foundSheetNames are the names of the sheets [read: models] that Tabletop knows about. Their order reflects the sheets' order in the original spreadsheet.

.data()

.data() returns the rows of the first model if you're in simpleSheet mode. It's the same as .sheets() otherwise. This is just a little sugar.

.fetch()

.fetch() manually initializes a data request to the Google Sheet.

.addWanted(name)

.addWanted(name) adds a sheet to the list that are updated with .fetch

Tabletop.Model attributes and methods

Tabletop refers to sheets as Models, which have a few extra abilities compared to the sheets-as-plain-objects.

.name

.name is the name of the worksheet it came from (the tab at the bottom of the spreadsheet)

.columnNames

.columnNames gives you the names of the columns in that table

.originalColumns

.originalColumns gives you the names of the columns that Google sends on the first pass (numbers stripped, lowercase, etc)

.prettyColumns

.prettyColumns gives you the mapping between the column headers in the spreadsheet and the and the columnNames. Disabled by passing prettyColumnNames: false when initializing Tabletop.

.all()

.all() returns an array of the rows of the table, in the style of [ { name: "Tom", age: 5}, { name: "Liz", age: 12 } ]

.toArray()

.toArray() returns the rows of the table with numbered indices instead of named ones [ [ "Tom", 5] , [ "Liz", 12 ] ]

So what the hell do I do with this

Imagine it's a read-only, JavaScript CMS that you can edit through Google Docs. It's like Christmas up in here.

You can see examples of working with different systems in, yes, /examples/.

Tabletop and any templating system (Handlebars etc)

Super easy. Just feed the models to your template and you're all set.

Tabletop and Backbone.js

I've put together a Backbone.tabletopSync driver for Backbone collections and models. It's read-only, but you can't really complain if you're powering your Backbone app through Google Spreadsheets.

Source is, of course, in /src, and you can check it out in action in examples/backbone/

Tabletop and AngularJS

Ændrew Rininsland (@aendrew) at The Times and Sunday Times has created a module that makes using Tabletop with AngularJS extremely easy. It also includes a loader for angular-translate that gives Tabletop the ability to provide i18n translation strings.

Please see times/angular-tabletop for more details.

Caching/Proxying Google Spreadsheets

Yeah, Google Spreadsheets can sometimes be slow or sometimes be overwhelmed or maybe one day Google will just up and disappear on us. So Tabletop.js now supports fetching your data from elsewhere, using options like endpoint and proxy.

proxy is the fun one, in that it rewrites your requests to be simpler-looking and plays nicely with the app & example I put together.

Using Flatware

If you don't mind running around with Heroku and AWS, Flatware is an app I built that uploads the spreadsheet JSON response to S3.

Using table-service

table-service hosts it on your own server using a python script, and auto-updates thanks to a tiny script you add to your spreadsheet.

Using gs-proxy

gs-proxy is another option that also uses Heroku. You'll set parameterize to something like http://example.herokuapp.com/?url= and off you go!

Using other caching

You can point proxy at anything you'd like as long as it has KEY and KEY-SHEET_ID files sitting in a directory. Feel free to host it on your own server! You can use /caching/local.rb if you want a pretty easy solution for generating the flat files.

Notes

Strange behavior

Empty tables are trouble. We can't get column names from them (c'mon, Google!), so don't be too confused when a table with 0 rows is coming back with an empty .column_names or your code starts throwing weird errors when processing the results.

Empty rows are trouble. If you have a row that's completely empty, Google doesn't return any rows after the empty row. As a result, you need to make sure every line in your spreadsheet has data in it.

Weird-named columns are trouble. A column named % might cause your spreadsheet to stop processing.

Unnamed columns are trouble. A column without a name will get in the way of your data successfully coming through.

If you are having trouble

Turn on debugging by passing debug: true when you initialize Tabletop. Check out the console, I try to keep my error messages chatty and informative. Or just email me at [email protected], I'm happy to help!

Tabletop.js in the wild

The more examples the better, right? Feel free to fork or contact me if you have a good example of something you've done.

A contextual video player with popcorn.js by @maboa

The WNYC mayoral tracker uses Tabletop along with Backbone.js

A Facebook-esque timeline from Balance Media (with a git repo)

Mapsheet creates super easy, customizable maps.

Other Options

If you aren't really feeling Tabletop, you should give Dataset a shot. It's "a JavaScript client-side data transformation and management library," which means it does a hell of a lot more than our dear Tabletop.

Credits

Jonathan Soma, who would rather be cooking than coding. Inspired by the relentless demands of John Keefe of WNYC.

Thanks to Scott Seaward for implementing multi-instance Tabletop.

Alan Palazzolo hooked the world up with gs-proxy and added support for it into Tabletop via parameterize

Max Ogden was kind enough to lend Tabletop nodejs support as part of an Open News code sprint