TinyModel

Tiny models for Meteor

Usage

1. Define a class that extends from TinyModel.
2. Define the Meteor collection used by your class.
3. Define document fields
4. Add validations
5. Add relationships
6. Add custom class and instance methods

# Step 1
class @Mutant extends TinyModel

  # Step 2
  @collection: new Meteor.Collection('mutants')

  # Step 3
  @field 'name', default: ''
  @field 'power', default: undefined
  @field 'gender', default: undefined

  # Step 4
  @validates 'name', presence: true, length: { in: [5..15] }
  @validates 'power', exclusion: { in: ['omnipotent'] }
  @validates 'gender', format: { with: /^(male|female)$/ }

  # Step 5
  @has a: 'team', of_class: 'Team'

  # Step 6
  @male: ->
    @all( gender: 'male' )

  @female: ->
    @all( gender: 'female' )

  attack: ->
    if @power
      "#{@power} attack!"
    else
      "no power specified"

class @Team extends TinyModel
  @collection: new Meteor.Collection('teams')

  @field 'name'

  @validates 'name', presence: true

  @has many: 'mutants', of_class: 'Mutant'
  @has a: 'leader', of_class: 'Mutant'
  @has an_embedded: 'headquarter', of_class: 'Location'
  @has many_embedded: 'vehicles', of_class: 'Vehicle'

  @evil: ->
    @findOne( leader: 'Magneto' )

  @good: ->
    @findOne( leader: 'Professor Xavier' )

Example

  xmen        = Team.insert( name: 'X-Men' )
  brotherhood = Team.insert( name: 'Brotherhood of Mutants' )
  wolverine   = Mutant.insert( name: 'Wolverine', gender: 'male', team_id: xmen._id )

  xmen.mutants()
  # => [<Mutant name: 'Wolverine'...>]

  wolverine.team()
  # => <Team name: 'X-Men'...>

Inserting

  storm = new Mutant
  storm.name = 'Storm'
  storm.gender = 'female'
  storm.power = 'weather control'
  storm.leader = 'Xavier'
  storm.insert()

  # or

  Mutant.insert( name: 'Storm', leader: 'Xavier', gender: 'female', power: 'weather control' )

Finding

  mutant = Mutant.findOne( name: 'Storm' )
  # => <Mutant name: 'Storm'...>
  mutants = Mutant.find( gender: 'female' )
  # => <Cursor>
  mutants = Mutant.all( gender: 'female' )
  # => [<Mutant>, <Mutant>, ...]

Updating

  storm.power = 'lightning'
  storm.update()

Removing

  storm.remove()

  # or

  Mutant.remove( name: 'Storm' )

Counting

  Mutant.count()
  # => 2
  Mutant.count( gender: 'female' )
  # => 1

Persisted

  magneto = new Mutant
  magneto.name = 'Magneto' #...
  magneto.persisted()
  # => false
  magneto.insert()
  magneto.persisted()
  # => true

Validate

  cyclops = new Mutant
  cyclops.isValid()
  # => false
  cyclops.hasErrors()
  # => true
  cyclops.errors
  # => [ { name: 'Mutant name is required' }...]
  cyclops.errorMessages()
  # => 'name is missing, length of name must be between 5 and 15...'

Clone/Copy

  storm = Mutant.findOne( name: 'Storm' )
  s2 = storm.copy()
  # => <Mutant _id: undefined, name: 'Storm'...>
  s2.insert()
  # => '3JtvMuwgjktwQoyBb'
  s2._id
  # => '3JtvMuwgjktwQoyBb'