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https://github.com/zimme/meteor-collection-behaviours

Define and attach behaviours to collections
https://github.com/zimme/meteor-collection-behaviours

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Define and attach behaviours to collections

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# Behaviours for collections



Define and attach behaviours to collections.



## Installation



```sh

meteor add zimme:collection-behaviours

```



## Available behaviours



The behaviours are split into separate packages, which depend on this package.



* `zimme:collection-softremovable`



  This behaviour adds `.softRemove()` and `.restore()` to collections, which

  make it possible to mark documents as removed. It also tracks the time and

  user for the last soft remove and restore.



  https://atmospherejs.com/zimme/collection-softremovable



* `zimme:collection-timestampable`



  This behaviour timestamps documents on insert and update. It also tracks the

  user who made the last insert or update.



  https://atmospherejs.com/zimme/collection-timestampable



## Usage



### Define a behaviour



```js

CollectionBehaviours.define('behaviourName', function(options) {

  var collection = this.collection;



  // Setup some default options for the behaviour

  var defaultOptions = {

    exampleOption: "I'm a default value"

  };



  // Make the behaviour configurable both globally and locally and uses the

  // defaults if not configured.

  options = _.defaults(options, this.options, defaultOptions);



  // Behaviour logic goes here

});

```



### Attach behaviours



```js

// Attach a behavour using the collection identifier

Meteor.users.attachBehaviour('timestampable');



// Attach a behaviour to a colleciton using CollectionBehaviours

CollectionBehaviours.attach(Meteor.users, 'timestampable');



// Attach multiple behaviours to a collection with default options

CollectionBehaviours.attach(Meteor.users, ['timestampable', 'softremovable']);



// Attach multiple behaviours to a collcetion with custom options

CollectionBehaviours.attach(Meteor.users, {

  timestampable: {

    createdAt: 'insertedAt',

  },

  softremovable: {

    removedBy: 'deletedBy',

  },

});



// Attach a behaviour to multiple collections

CollectionBehaviours.attach([Meteor.users, Posts], 'timestampable');



// Attach multiple behaviours to multiple collections

CollectionBehaviours.attach(

  [Meteor.users, Posts],

  ['timestampable', 'softremovable']

);

```



### Configuration



```js

// Configure behaviour globally i.e. set you own defaults

CollectionBehaviours.configure('behaviourName', {

  exampleOption: "I'm a global value"

});



// Attach behaviour with custom options

Meteor.users.attachBehaviour('behaviourName', {

  exampleOption: "I'm a local value"

});



// Attach behaviour with custom options, using CollectionBehaviours

CollectionBehaviours.attach(Meteor.users, 'behaviourName', {

  exampleOption: "I'm a local value"

});

```



## API



### CollectionBehaviours.define



Used to defined a new behaviour or overwrite an already defined behaviour.



```js

CollectionBehaviours.define('behaviourName', behaviourFunciton, options);

```



* `'behaviourName'`: Required. The name of the behaviour.

* `behaviourFunction`: Required. A `Function` that takes `options` as an

  argument. This function is the behaviour.

* `options`: Optional. `Object` with the options for the behaviour.



#### Options



* `replace`: Optional. Set to `true` to replace a previously defined behaviour.



### CollectionBehaviours.configure



Used to confgure behaviours globally.



```js

// Configure single behaviour

ColectionBehaviours.configure('behavioursName', options);



// Configure multiple behaviours

CollectionBehaviours.configure({

  timestampable: {

    createdAt: 'insertedAt',

    updatedBy: 'modifiedBy'

  },

  softremovable: {

    removed: 'deleted'

  }

});

```



* `'behaviourName'`: Required.  

  If set to a `String`, 'behaviourName', will configure the named behaviour.  

  If set to an `Object`, where the keys are named behaviours and the values are  

  the options for the behaviours, will configure those named behaviours.



* `options`: Optional if `behaviourName` is an `Object`.  

  See specific behaviour for available options.



### <CollectionIdentifier>.attachBehaviour



Used to attach behaviour(s) to the collection.



```js

Meteor.users.attachBehaviour(behaviourNameOrFunction, options);

```



* `behaviourNameOrFunction`: Required.  

  If set to a `String`, `'behaviourName'`, will attach the named behaviour.  

  If set to a `Function`, will attach that function as an anonymous behaviour.  

  If set to an `Array` of `String`/`Function`, will attach those named or  

  anonymous behaviours.  

  If set to an `Object`, where the keys are named behaviours and the values are  

  the behaviours' options, will attach those named behaviours with the provided  

  options.

* `options`: Optional. See specific behaviour for available options.



### CollectionBehaviours.attach



Used to attach behaviour(s) to collection(s).



```js

CollectionBehaviours.attach(ColletionIdentifier, behaviourNameOrFunction, options);

```



* `CollectionIdentifier`: Required. The collection or `Array` of collections  

  you want to attach the behaviour(s) to.

* `behaviourNameOrFunction`: Required.  

  If set to a `String`, `'behaviourName'`, will attach the named behaviour.  

  If set to a `Function`, will attach that function as an anonymous behaviour.  

  If set to an `Array` of `String`/`Function`, will attach those named or  

  anonymous behaviours.  

  If set to an `Object`, where the keys are named behaviours and the values are  

  the behaviours' options, will attach those named behaviours with the provided  

  options.

* `options`: Optional. See specific behaviour for available options.



## Notes



* `CollectionBehaviours.config` is an alias for `CollectionBehaviours.configure`

* The inspiration for this package came from

[`sewdn:collection-behaviours`][sewdn]



[Atmosphere]: https://atmospherejs.com

[Code Climate]: https://img.shields.io/codeclimate/github/zimme/meteor-collection-behaviours.svg

[Gitter]: https://img.shields.io/badge/gitter-join_chat-brightgreen.svg

[License]: https://img.shields.io/badge/license-MIT-blue.svg

[sewdn]: https://github.com/Sewdn/meteor-collection-behaviours