Re: get emit(doc.name,doc.url) to javascript variable

[J Chris Anderson]

On Aug 9, 2010, at 5:50 PM, whimsica wrote:

> 
> So far I'm very confused about how to get couchdb to talk to javascript on
> the web page using show or view.
> 

The challenge here is figuring out which javascript code runs in which context. 
All the JS you've shown, runs on the server, not the browser. Here are some 
tips about how to run JS in the browser and talk to CouchDB:

The simplest way to do this is with static HTML served as an attachment to the 
browser, which makes Ajax queries to the CouchDB. This way you don't need to 
fuss with a show function (which is awesome, but another layer of indirection.)

Take a look at the example code on this page (and follow the exercise):

http://couchapp.org/page/what-is-couchapp#/

Where it says:

    $.couch.allDbs({
      success : function(dbs) {
        dbs.forEach(function(db) {
          $("#databases").append('<li><a 
href="/_utils/database.html?'+db+'">'+db+'</a></li>');
        });
      }
    });
you might try replacing it with this, to do a view query instead (assuming your 
db is called "mydb" and your view is called "myview":

    var db = $.couch.db("mydb");
    db.view("myview",{
      limit : 10,
      success : function(resp) {
        resp.rows.forEach(function(row) {
          $("#databases").append('<li>'+row.key+'</li>');
        });
      }
    });
Hope that helps.

> Let's say I have a database with things like names of users and a url that
> users submit
> I want to emit the results of a view in raw json form and alert it on the
> page using javascript alert()
> 
> How do I do that.
> 
> I tried putting a javascript function in a view (alert(1)) just to see but
> it gave back an error.
> 
> So far I was able to call a javascript function in a show command below but
> it's not the json from the view.
> 
> database
> {
>   "_id": "81c76a15131be24115f53e2cafaea4e8",
>   "_rev": "2-5df7ac370489e818b4e72d5293069bfb",
>   "name": "moe",
>   "url": "http://www.moeshomepage.com";
> }
> 
> 
> {
>   "_id": "_design/yo",
>   "_rev": "11-3ac3428c8d47bb485b67f262248c8192",
>   "language": "javascript",
>   "views": {
>       "users": {
>           "map": "function(doc) {emit(doc.name,doc.url)}"
>       }
>   },
>   "shows": {
>       "showall": "function(doc,req){return <script>alert(1)</script>}"
>   }
> }
> 
> Thank you,
> 
> Dan
> 
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