I a开发者_如何学Pythonm working with a database that is already in place and used by other applications.
I have a page where I can view a product, and directly from this page the user can add and remove multiple images associated with the product. I\'m using paperclip in a form to upload new file.
This is driving me insane! This code used to work fine, but as of a few weeks ago it stopped working, and I can\'t work out why. Basically a Game has many Patches. The error occurs in my PatchesContro
I am new to rails, and have a situation that I can\'t quite get my head around. Lets say I have two resources, users and widgets.
Is there a simple way to specify a has_many :through relationship where you\'re linking the same data type? eg. One User has many friends (who are all users).
I have boxes and balls. Balls are in boxes. Ball can be either red and green. class Box < ActiveRecord::Base
Suppose that we have the following partial ER diagram: Notice that the attachments table will subsequently be used for the messages\', submissions\', assignments\', and lectures\' attachments.
I\'ve started writing a project using CakePHP (1.3) and am finding it difficult to return results using the CakePHP style of querying.
Class Engine has \"start(c:Component)\" method. So do we need to draw an as开发者_如何学JAVAsociation between Engine and Component Class IF there is no \"new Component()\" inside Engine class.No, you
Using Ruby on Rails, how can I achieve a polymorphic has_many relationship where the owner is always of a known but the items in the association will be of some polymorphic (but homogenous) type, spec
加载中,请稍侯......