Class: Scrivener

Inherits:
Object
  • Object
show all
Includes:
Validations
Defined in:
lib/scrivener.rb,
lib/scrivener/validations.rb

Defined Under Namespace

Modules: Validations

Constant Summary collapse

VERSION = 
"1.1.0"

Instance Method Summary collapse

Methods included from Validations

#errors, #valid?, #validate

Constructor Details

#initialize(atts) ⇒ Scrivener

Initialize with a hash of attributes and values. Extra attributes are discarded.

Examples:


class EditPost < Scrivener
  attr_accessor :title
  attr_accessor :body

  def validate
    assert_present :title
    assert_present :body
  end
end

edit = EditPost.new(title: "Software Tools")

edit.valid? #=> false

edit.errors[:title] #=> []
edit.errors[:body]  #=> [:not_present]

edit.body = "Recommended reading..."

edit.valid? #=> true

# Now it's safe to initialize the model.
post = Post.new(edit.attributes)
post.save


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# File 'lib/scrivener.rb', line 37

def initialize(atts)
  atts.each do |key, val|
    accessor = "#{key}="

    if respond_to?(accessor)
      send(accessor, val)
    end
  end
end

Instance Method Details

#_accessors ⇒ Object 



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# File 'lib/scrivener.rb', line 47

def _accessors
  public_methods(false).select do |name|
    name[-1] == "="
  end
end

#attributes ⇒ Object

Return hash of attributes and values.



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# File 'lib/scrivener.rb', line 54

def attributes
  Hash.new.tap do |atts|
    _accessors.each do |accessor|
      att = accessor[0..-2].to_sym
      atts[att] = send(att)
    end
  end
end

#slice(*keys) ⇒ Object 



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# File 'lib/scrivener.rb', line 63

def slice(*keys)
  Hash.new.tap do |atts|
    keys.each do |att|
      atts[att] = send(att)
    end
  end
end