Collections and Schemas

sashko · March 18, 2016, 12:23am

This is the comment thread for the Collections and Schemas article in the Meteor Guide.

Read the article: http://guide.meteor.com/collections.html

The comment thread for each article appears at the very bottom of the page. Use this thread to post:

Interesting articles related to the content
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Or anything else related to this topic that people could find useful!

sashko · March 18, 2016, 12:31am

It works! Now we can comment on Guide articles.

manaseer · March 18, 2016, 3:54pm

To make the navigation a bit easier, It would be helpful if links to Previous and Next sections of the tutorial can also be added to the top of the page as well.

pandawhisperer · April 6, 2016, 5:18am

So how about the aldeed:collection2 package? I see you’re making use of aldeed:simple-schema, but then show only how to validate manually.

Does the collection2 package still work with Meteor 1.3? Is its use recommended? Any disadvantages to validating automatically rather than manually?

danryan · April 12, 2016, 8:30pm

Is it still considered best practice to load the collection as a global variable?

sashko · April 12, 2016, 8:37pm

Negative - you’d want to import it wherever you use it. Like in the todos example app:

Exporting:

github.com

meteor/todos/blob/01e0d749e1d4544a080e8dffaf9c0e8ff803e2f6/imports/api/lists/lists.js#L28


  }


  return super.insert(ourList, callback);
}
remove(selector, callback) {
  Todos.remove({ listId: selector });
  return super.remove(selector, callback);
}
}


export const Lists = new ListsCollection('Lists');


// Deny all client-side updates since we will be using methods to manage this collection
Lists.deny({
insert() { return true; },
update() { return true; },
remove() { return true; },
});


Lists.schema = new SimpleSchema({
name: { type: String },

Importing:

github.com

meteor/todos/blob/01e0d749e1d4544a080e8dffaf9c0e8ff803e2f6/imports/ui/pages/lists-show-page.js#L4


import { Template } from 'meteor/templating';
import { FlowRouter } from 'meteor/kadira:flow-router';


import { Lists } from '../../api/lists/lists.js';


import { listRenderHold } from '../launch-screen.js';
import './lists-show-page.html';


// Components used inside the template
import './app-not-found.js';
import '../components/lists-show.js';


Template.Lists_show_page.onCreated(function listsShowPageOnCreated() {
this.getListId = () => FlowRouter.getParam('_id');

nbrady · April 12, 2016, 8:38pm

@sashko I’ve been doing this recently, but now I can’t access that collection on the browser console. Is that supposed to be the case? Also, it seems slower which makes me feel like minimongo isn’t being used.

sashko · April 12, 2016, 8:39pm

It’s definitely not slower, it’s exactly identical to before.

If you want to access from the console I’d suggest putting a:

global.Lists = Lists

near where you export it.

nbrady · April 12, 2016, 8:40pm

Interesting. I must be doing something else wrong, because it seems to be making the round trip call to the server db before updating my view. Thanks!

sashko · April 12, 2016, 8:42pm

Did you import your methods on the client?

nbrady · April 12, 2016, 8:44pm

Yes, and tested that both the client and the server methods are being called. Can’t figure out where the latency is coming from, but only started happening today after I moved to modules.

devian · May 3, 2016, 8:08am

Why is there no mention of Astronomy in the guide?

PolGuixe · May 3, 2016, 11:10am

@sashko Does Astronomy have some clashes or overlayed functionality with Apollo?

sashko · May 3, 2016, 3:59pm

See the discussion here: https://github.com/meteor/guide/issues/10

At the end of the day we felt we had to make a decision so we picked simple schema.

jesperwe · May 3, 2016, 4:17pm

You could at least mention that there is an alternative, since Astronomy is in some peoples (plural since I think there are more than me ) view preferrable?

sashko · May 3, 2016, 4:21pm

Probably a good idea to mention it at least, @tmeasday what do you think?

tmeasday · May 3, 2016, 6:48pm

Yeah, we should mention it. I’m not sure what the best format is.

rdagger · May 5, 2016, 11:02pm

Is the Lists.deny lines in the code above from Todos necessary? I thought all collections were deny by default as long as the insecure package is not installed.

sashko · May 5, 2016, 11:05pm

Yes - if you read the text right next to it, it says that we add that so that nobody else can ever accidentally call allow on that collection.

rdagger · May 5, 2016, 11:14pm

Thanks for clarifying, but I must be blind because I don’t see the “accidentally” quote.