graph.fetch not able to read 'views'

[substance]

graph.fetch not able to read 'views'

[michael]

Looks like there's a problem with seeding the database, which also triggers the creation of design documents (per type) containing the views.

You can try adapting the following seed script https://github.com/michael/substance/blob/master/db/seed.js, it will probably solve your problem.

Updating the schema isn't really covered in the docs yet. Will add this.

[lgomez]

Thank you!

So... I seeded it and the users I had synced disapeared while the views (not previously in the db) appeared. I can now retrieve the user although doing:

graph.fetch({type: '/type/user'}, function(err) {
if (!err) {
var user = graph.get('/user/luis');
console.log(user);
res.send(user.get("name"));
}
});

shows the following in the browser:

{"Luis Gomez":"Luis Gomez"}

Shouldn't it show simply "Luis Gomez"?

This is what's in that user document in couch:

{
"_id": "/user/luis",
"_rev": "1-daf9840f8a91c6c7a170b184752c4a1d",
"name": [
"Luis Gomez"
],
"type": [
"/type/user"
]
}

[lgomez]

Also, I just tried running node seed.js --flush and my user ("/user/luis") disappeared. Am I missing a step to have it saved correctly?

[lgomez]

Ok, this is weird to me. I see the user being inserted into the database but when I stop and restart the application the user disappears.

Check a more complete copy of the code I'm using. Perhaps I'm just not understanding the documentation:

https://gist.github.com/1078764

If there's anything I can do to help you improve it, feel free to ask. I'm happy to contribute.

Thanks,

[michael]

You need to define "name" as a unique property ("unique": true), which means there can be just one value. That's why user.get("name") returns a Data.Hash instead of a unique string value "Luis Gomez".

node seed.js --flush just resets the whole database. Be careful with that :) If you want to upgrade your schema in a non-destructive way just use node seed.js. I realize that at some point this seeding thing should go into the lib. ;) For convenience and clarity.

Feel free to add a comment with your addition to the docs where you see it fit. I'll have a look at it and include it.

[lgomez]

Got it. I split that seeding script into two to avoid running it by mistake :)

Thanks a lot for your help. It's working now.

[michael]

I'm updating the docs a bit (in preparation of the 0.4.0 release). I also roughly covered the schema evolution thing. http://substance.io/#michael/data-js/_section_164bef6a1497735c9c45020037b6c92c

I decided to leave schema evolution to the user, as it would impose restrictions if I'd include it in the library.

[lgomez]

Nice. Thanks!

I'll try to write a few examples once I finish what I'm working on. Perhaps they'll come in handy for other users.