Class: Locator

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/locator.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.first_empty(wizard) ⇒ Object 



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# File 'app/models/locator.rb', line 39

def self.first_empty(wizard)
  return unless wizard

  locs = where(wizard_id: wizard.id, item_id: nil)
  if !locs.empty?
    locs.first
  else
    m = Locator.largest wizard
    loc = Locator.new(wizard_id: wizard.id, number: m ? m.number + 1 : 0)
    loc.save
    loc
  end
end

.largest(wizard) ⇒ Object 



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# File 'app/models/locator.rb', line 57

def self.largest(wizard)
  # find greatest locator for this wizard, should always be the most recent
  wizard.locators.order('id desc').first
end

.port(wizard) ⇒ Object 



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# File 'app/models/locator.rb', line 62

def self.port(wizard)

  # e.g. Locator.port Wizard.find_by_name("M20")

  ots = ObjectType.where(prefix: wizard.name)
  items = ots.collect(&:items).flatten.select { |i| wizard.has_correct_form i.primitive_location }
  maxitem = items.max_by { |i| puts i.id; wizard.location_to_int(i.primitive_location) }
  max = wizard.location_to_int maxitem.primitive_location

  collisions = []

  # insert block of new locators
  (0..max).each do |n|
    Locator.new(
      number: n,
      wizard_id: wizard.id
    ).save
  end

  # insert locators
  items.each do |i|

    n = wizard.location_to_int(i.primitive_location)
    l = Locator.find_by(wizard_id: wizard.id, number: n)

    if l.item_id
      collisions.push([l.item_id, i.id])
    else
      l.item_id = i.id
      l.save
      i.locator_id = l.id
      i.save
    end

  end

  collisions

end

.port_all ⇒ Object 



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# File 'app/models/locator.rb', line 102

def self.port_all

  port Wizard.find_by(name: 'M20')
  port Wizard.find_by(name: 'M80')
  port Wizard.find_by(name: 'SF2')
  port Wizard.find_by(name: 'DFP')

end

Instance Method Details

#clear ⇒ Object 



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# File 'app/models/locator.rb', line 111

def clear
  r1 = false
  r2 = false
  transaction do
    item.locator_id = nil
    r1 = item.save
    self.item_id = nil
    r2 = save
  end
  r1 && r2
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/locator.rb', line 53

def empty?
  item_id.nil?
end

#has_wizard ⇒ Object 



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# File 'app/models/locator.rb', line 16

def has_wizard
  errors.add(:no_wizard, 'no wizard') unless
    wizard_id && wizard_id >= 0
end

#no_collisions ⇒ Object 



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# File 'app/models/locator.rb', line 21

def no_collisions
  puts "Checking for collisions for #{id}"
  c = Locator.where(wizard_id: wizard_id, number: number)
  if c.length == 1 && c.first != self
    errors.add(:locator_collision, "Locator #{c.first.id} already has number #{number}.")
  elsif c.length > 1
    errors.add(:locator_collision, "Multiple Locators have number #{number}.")
  end
end

#to_s ⇒ Object 



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# File 'app/models/locator.rb', line 31

def to_s
  if wizard
    wizard.int_to_location number
  else
    'ERROR'
  end
end