我在模型中有Effect
个类,在"effect"
类中有app/models/effect/
个文件夹,如Effect::Status
。在此配置中,效果类与带有轨道的模块类似。
但我在模特中有另一个班级Status
:
class Status < ActiveRecord::Base
DEATH = 1
现在我想在Effect类中调用此常量,例如:
class Effect
def self.apply
foo = Status::DEATH
end
end
但是,我有以下错误:
未初始化的常量效果::状态::死亡
我认为Status
和Effect::Status
那我怎么解决这个问题呢?
答案 0 :(得分:1)
首先要求class ImageButton(Gtk.EventBox):
def __init__(self):
super(Gtk.EventBox, self).__init__()
# Load the images for the button
self.button_image = Gtk.Image.new_from_icon_name("edit-delete", Gtk.IconSize.MENU)
self.button_pressed_image = Gtk.Image.new_from_icon_name("edit-delete-symbolic", Gtk.IconSize.MENU)
# Add the default image to the event box
self.add(self.button_image)
# Connect the signal listeners
self.connect('realize', self.on_realize)
self.connect('button-press-event', self.on_button_pressed)
self.connect('button-release-event', self.on_button_released)
def update_image(self, image_widget):
self.remove(self.get_child())
self.add(image_widget)
self.button_pressed_image.show()
def on_realize(self, widget):
hand_pointer = Gdk.Cursor(Gdk.CursorType.HAND1)
window = self.get_window()
window.set_cursor(hand_pointer)
def on_button_pressed(self, widget, event):
self.update_image(self.button_pressed_image)
def on_button_released(self, widget, event):
self.update_image(self.button_image)
班级加入Status
。
然后,使用前面的Effect
访问它,表示没有父模块。
::