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Subject: Re: get emit(doc.name,doc.url) to javascript variable
Date: Fri, 13 Aug 2010 07:56:29 -0700
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On Aug 9, 2010, at 5:50 PM, whimsica wrote:

>=20
> So far I'm very confused about how to get couchdb to talk to =
javascript on
> the web page using show or view.
>=20

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=3D"/_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 =3D $.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()
>=20
> How do I do that.
>=20
> I tried putting a javascript function in a view (alert(1)) just to see =
but
> it gave back an error.
>=20
> So far I was able to call a javascript function in a show command =
below but
> it's not the json from the view.
>=20
> database
> {
>   "_id": "81c76a15131be24115f53e2cafaea4e8",
>   "_rev": "2-5df7ac370489e818b4e72d5293069bfb",
>   "name": "moe",
>   "url": "http://www.moeshomepage.com"
> }
>=20
>=20
> {
>   "_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>}"
>   }
> }
>=20
> Thank you,
>=20
> Dan
>=20
> --=20
> View this message in context: =
http://couchdb-development.1959287.n2.nabble.com/get-emit-doc-name-doc-url=
-to-javascript-variable-tp5391246p5391246.html
> Sent from the CouchDB Development mailing list archive at Nabble.com.


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