https://github.com/astrocoders/meteor-astrocoders-publish
Smartly re-use Meteor publications logic
https://github.com/astrocoders/meteor-astrocoders-publish
meteor
Last synced: about 1 month ago
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Smartly re-use Meteor publications logic
- Host: GitHub
- URL: https://github.com/astrocoders/meteor-astrocoders-publish
- Owner: Astrocoders
- License: mit
- Created: 2015-10-25T01:50:09.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2018-04-19T16:58:37.000Z (about 7 years ago)
- Last Synced: 2025-04-30T07:08:58.002Z (about 1 month ago)
- Topics: meteor
- Language: JavaScript
- Homepage:
- Size: 23.4 KB
- Stars: 33
- Watchers: 5
- Forks: 1
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- Changelog: History.md
- License: LICENSE
Awesome Lists containing this project
README
AstroPublish [](https://travis-ci.org/Astrocoders/meteor-astrocoders-publish)
============
Smart re-use your publications.
## Installation
Use the Meteor package system
```sh
$ meteor add astrocoders:publish
```
Take a look at your current publications:
```js
Meteor.publish('items', function(){
if(this.userId){
return Items.find();
} else {
this.ready();
}
});
Meteor.publish('photos', function(){
if(this.userId){
return Photos.find();
} else {
this.ready();
}
});
```
And for every publication you wanna to send only if the user is logged in you gotta to
repeat that. Not nice, right? Now take a look how they will become with
AstroPublish:
```js
Items.publish('items').ifSignedIn().apply();
Photos.publish('photos').ifSignedIn().apply();
```
Liked? And how about this one:
```js
// `this` is the context of Meteor.publish
AstroPublish.defineMethod({
type: 'query',
name: 'isOwner',
fn(){
return {
owner: this.userId
}
}
});
// ...
Items.publish('items').ifSignedIn().isOwner().apply();
Photos.publish('photos').ifSignedIn().isOwner().one().latest().apply();
```
Of course you can do more than one publication!:
in client:
```js
this.subscribe('itemsEdit', FlowRouter.getParam('_id'));
```
in server:
```js
Items.publish('itemsEdit').isOwner().query((itemId) => {
return {
itemId
}
}).apply();
```
## Usage
Call `.publish(pubName)` and the chain the methods you want and then invoke
`apply()` at the end to create the publication.
## Built-in methods
- *.ifSignedIn*, only query if the user are logged in.
- *.one*, sets limit to 1
- *.lastest*, it's the same as:
```js
{
sort: {
createdAt: -1
}
}
```
- *.mongoRule*, usage:
```js
Items.publish('items').mongoRule(() => {
return {
fields: {
_id: 1
}
}
}).apply();
// And the subscription will only get those fields.
```
- *.fields*, usage:
```js
Items.publish('items').fields('name', 'price').apply();
// And the subscription will only get those fields.
```
- *.limit*, usage:
```js
Items.publish('items').lastest().limit(10).apply();
```
- *.byGotId*. It's really common you create a publication that only gets an id
param and the query for the correspondent document in the database (`{_id: id}`):
```js
// This method expects a subscription like this:
this.subscribe('fooEdit', fooId);
// ...
Items.publish('fooEdit').byGotId().apply();
```
- *.with*. Publish a cursor of another collection in the same publication:
```js
Items.publish().with(ItemsPrices.publish()).apply();
// You can have as with'es you want and use all the chain methods available
// in the with'ed publication:
Items.publish().with(ItemsPrices.publish()).with(Things.publish().ifSignedIn())
.apply();
```
- *ifHasRole*. Only publish if the user is within one of the passed roles:
```js
Items.publish().ifHasRole('admin').apply();
// as many as you need:
Items.publish().ifHasRole('admin', 'super-cool').apply();
```
## Extending with custom methods
You can create custom methods calling `AstroPublish.definedMethod`.
There are just three types of methods available:
- `query`
The returns of these methods will be merged into a single object and will
be used during the publication return. These methods must always return
an object.
```js
AstroPublish.defineMethod({
type: 'query',
name: 'hasPriceBetween',
// with `context: 'chain'` option.fn callback will receive
// the arguments from the chain, like it is in built-in method `field`
context: 'chain',
fn: function(min, max){
// Return a query here
return {
price: {
$lt: min,
$gt: max
}
}
}
});
// ...
Items.publish('items').hasPriceBetween(50, 100).apply();
```
But if instead of getting the arguments from the chain context, you wanna
to get them from the arguments send to the publish by the subscribe you do:
client
```js
this.subscribe('itemsByPrice', 50, 100);
```
server
```js
AstroPublish.defineMethod({
type: 'query',
name: 'hasPriceBetween',
// Without the 'context: chain' the arguments here are the arguments
// received by the `Meteor.publish` from subscription.
fn: function(min, max){
// Return a query here
return {
price: {
$lt: min,
$gt: max
}
}
}
});
// ...
Items.publish('items').hasPriceBetween(50, 100).apply();
```
- `predicate`
Must always return `true` or `false`. They are invoked before any query in the
collection. Think about them like the `if(this.userId) Collection.find()`
of our first example.
```js
AstroPublish.defineMethod({
type: 'predicate',
// you can use 'context: chain' here too
name: 'ifUserIsCool',
fn: function(){
let user = Meteor.users.findOne(this.userId);
return !!user.isCool;
}
});
// ...
Items.publish('items').ifUserIsCool().apply();
```
- `mongoRule`
The return of these methods will be merge into a single object and will be used
as the second argument of the `Collection.find(query, mongoRules)`.
```js
AstroPublish.defineMethod({
type: 'mongoRule',
context: 'chain',
name: 'skip',
fn: function(number){
return {
skip: number
};
}
});
// ...
Items.publish('items').skip(5).apply();
```
## Troubleshooting
1. You used `.query(() => )` instead of `query(function(){})` so `this` is not going to work properly and you even noticed it ;);
2. You forget to call `.apply()` and the end of the method chaining;
3. Add a call to `.debug(true)` at the method chaining do debug with
node-inspector.
## Testing
Run tests using Meteor Command
```
$ meteor test-packages ./
```
## License
MIT. Enjoy!