Module: MongoModel::Scope::FinderMethods

Included in:
MongoModel::Scope
Defined in:
lib/mongomodel/support/scope/finder_methods.rb

Instance Method Summary collapse

Instance Method Details

#allObject


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# File 'lib/mongomodel/support/scope/finder_methods.rb', line 41

def all
  to_a
end

#apply_finder_options(options = {}) ⇒ Object


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# File 'lib/mongomodel/support/scope/finder_methods.rb', line 49

def apply_finder_options(options={})
  result = clone

  result = result.where(options[:conditions]) if options[:conditions]
  result = result.order(options[:order])      if options[:order]
  result = result.select(options[:select])    if options[:select]
  result = result.limit(options[:limit])      if options[:limit]
  result = result.offset(options[:offset])    if options[:offset]

  result
end

#exists?(id) ⇒ Boolean


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# File 'lib/mongomodel/support/scope/finder_methods.rb', line 45

def exists?(id)
  where(:id => id).any?
end

#find(*ids, &block) ⇒ Object


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# File 'lib/mongomodel/support/scope/finder_methods.rb', line 4

def find(*ids, &block)
  if block_given?
    to_a.find(&block)
  else
    ids.flatten!

    case ids.size
    when 0
      raise ArgumentError, "At least one id must be specified"
    when 1
      id = ids.first
      where(:id => id).first || raise(DocumentNotFound, "Couldn't find document with id: #{id}")
    else
      ids = ids.map { |id| Reference.cast(id) }
      docs = where(:id.in => ids).to_a
      raise DocumentNotFound if docs.size != ids.size
      docs.sort_by { |doc| ids.index(doc.id) }
    end
  end
end

#first(count = nil) ⇒ Object


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# File 'lib/mongomodel/support/scope/finder_methods.rb', line 25

def first(count=nil)
  if loaded?
    count ? to_a.first(count) : to_a.first
  else
    count ? limit(count).to_a : limit(1).to_a[0]
  end
end

#last(count = nil) ⇒ Object


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# File 'lib/mongomodel/support/scope/finder_methods.rb', line 33

def last(count=nil)
  if loaded?
    count ? to_a.last(count) : to_a.last
  else
    count ? reverse_order.limit(count).to_a : reverse_order.limit(1).to_a[0]
  end
end