Thanks George; this is useful info.
To the original question:

As far as I know, old exhibits will continue to work; the api hasn't changed.

What has changed is that it is now more difficult to figure out the right url to use with *new* spreadsheets, because google has made some changes to the way sheets get named at creation time. George's instructions below explain how to figure that out.

I intend to add functionality that will make it easier to access sheet data, but unfortunately using the easy functionality will also make it *slower* because exhibit will have to fetch more information from google. So George's recipe is the way to go if you want the best performance.

On 11/9/2014 11:04 AM, George Adams wrote:
I have both new and old spreadsheets working with exhibits. The switch might possibly break an exhibits link to the spreadsheet but if that happens then the new link can be found.

I recently posted the instructions that do work to get the correct URL for the new spreadsheets.

Here are the steps.

1. Follow the previous posted instructions for making the spreadsheet and filling in the data.
The first line has field names like this
Timestamp {location} {label} {latlong} {category} {url} {img} {summary}



2. The spreadsheet needs to be "Published to the web" using the File>>Published to the web... menu item and not the "Public on the web" option for sharing in the Share button dialog box. Do not confuse this with the blue Share button in the top right side of the document. Apparently that is something different.

3. Locate the key for your document. This is the 44 character string in the URL In this case, https://docs.google.com/a/hayriv.com/spreadsheets/d/1U58sXa3NVN_Lz9ohGkuTuyRq3pGdWPw8lYXKsjmNeIU/edit#gid=573703946, it is the "1U58sXa3NVN_Lz9ohGkuTuyRq3pGdWPw8lYXKsjmNeIU"
It can also be found in the publish to web dialog box from step 2 above.

4. Go to this URL
https://spreadsheets.google.com/feeds/worksheets/*KEY*/private/basic
Replace the word *KEY* with the 44 character string found in 3 above.
From the example above go to
https://spreadsheets.google.com/feeds/worksheets/1U58sXa3NVN_Lz9ohGkuTuyRq3pGdWPw8lYXKsjmNeIU/private/basic

5. In the document that is returned search for "/private/basic/"
The characters following the /private/basic/ will be the sheet ID

"https://spreadsheets.google.com/feeds/worksheets/0AkgOV8gxmgPadGV3bTVxREZvb05jNUhxaGNQZ2lFZ2c/private/basic/od6";

In this case the first sheet in the spreadsheet is the od6. This is the normal first sheet for a spreadsheet made as a spreadsheet and not created as a on-line form.

In this case, https://spreadsheets.google.com/feeds/worksheets/1U58sXa3NVN_Lz9ohGkuTuyRq3pGdWPw8lYXKsjmNeIU/private/basic
the sheet ID is o9hkgr4

6. Replace the KEY and WORKSHEET_ID in this URL with the ones found above.
https://spreadsheets.google.com/feeds/list/KEY/WORKSHEET_ID/public/basic?alt=json-in-script

It should look like this
https://spreadsheets.google.com/feeds/list/1U58sXa3NVN_Lz9ohGkuTuyRq3pGdWPw8lYXKsjmNeIU/o9hkgr4/public/basic?alt=json-in-script
This will return the json data that Exhibit can use to display your data.

George Adams

On Sun, Nov 9, 2014 at 9:50 AM, . <[email protected] <mailto:[email protected]>> wrote:

    is this going to break all our old exhibits? all spreadsheets
    created in the old version of Google Sheets are being migrated to
    the new version
    https://support.google.com/docs/answer/6082736?p=old_sheets_migrate&rd=1

    On Wed, Aug 6, 2014 at 4:49 PM, George Adams
    <[email protected] <mailto:[email protected]>> wrote:

        David,
        The spreadsheet url in my line of code is followed by /od6/
        The od6 usually refers to the first sheet of the spreadsheet.
        When I made up a spreadsheet from within drive this was the
        case. When I started by making a web form and then had the
        form make up a responses spreadsheet the first sheet looked
        like this ookxz0b. I never got the spreadsheet with the form
        attached to work with Exhibit.

        I read quite a few web pages looking for a way to figure out
        how to get that reference. I bookmarked some of them but
        apparently not the ones that ended up working.

        I think this is the page that I ended up using to get the URLs
        needed to get the worksheetId
        This is the Google API
        
https://developers.google.com/google-apps/spreadsheets/#retrieving_information_about_worksheets

        From that document try

        |https://spreadsheets.google.com/feeds/worksheets/key/private/basic  
<http://spreadsheets.google.com/feeds/worksheets/key/private/basic>|

        Replace the word key with your key
        In the document that is returned look for something like this
        
"https://spreadsheets.google.com/feeds/worksheets/0AkgOV8gxmgPadGV3bTVxREZvb05jNUhxaGNQZ2lFZ2c/private/basic/od6";

        In this case the first sheet in the spreadsheet is the od6,
        Yours might be different.
        Try the URL for the JSON data in my exhibit with both your key
        and the sheet reference.

        If that doesn't work try this URL from the Google API

        |https://spreadsheets.google.com/feeds/cells/key/worksheetId/private/basic  
<http://spreadsheets.google.com/feeds/cells/key/worksheetId/private/basic>|

        This should return each of the cells in the spreadsheet once
        you replace the key and worksheetId in the URL

        Also note that the spreadsheet needs to be "Published to the
        web" using the File>>Published to the web... menu item and not
        the "Public on the web" option for sharing in the Share button
        dialog box.

        Let me know if this works for you.
        George Adams


        On Wed, Aug 6, 2014 at 9:36 AM, David Karger <[email protected]
        <mailto:[email protected]>> wrote:

            How did you figure out the appropriate url? The new
            "publish" dialog is giving me a url that I can't easily
            convert (e.g., putting my key in your url doesn't work).


            On 8/6/2014 4:13 AM, George Adams wrote:
            This test version of a Seed Library is running off of a
            new Google Spreadsheet.
            http://hayriv.com/seeds.html

            I did have an exhibit connected to an older Google
            spreadsheet and it was easier to figure out the proper
            URL to use. I even checked the old spreadsheet and it
            still has options for publishing to the web that no
            longer exist with the new Google spreadsheets. The option
            to publish just a single sheet no longer exists in the
            dialog box.

            George Adams


            On Wed, Aug 6, 2014 at 12:24 AM, David Karger
            <[email protected] <mailto:[email protected]>> wrote:

                Has anyone figured out how to get an exhibit json
                feed from the new/changed google spreadsheets?
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