I\'ve faced with a problem when querying with Hibernate Criteria in Grails. Take a look: def visitors = Client.withCriteria{
I have developed an application and I seem to be having some problems with my associations. I have the following:
what are the minimum tables I need for many to many 开发者_如何转开发associations in Hibernate?Apart from the tables for the entities you want to associate, you need an association table. In its simpl
I am starting to create my sites in Ruby on Rails these days instead of PHP. I have picked up the language easily but still not 100% confident with associations :)
I am creating a site in Ruby on Rails, I have two models a User model开发者_如何学编程 and a Transaction model.
I would like to list all posts that are connected with some specific 开发者_运维知识库category and classroom.
In rails guides it\'s described like this: Objects will be in addition destroyed if they’re associated with :dependent => :destroy, and deleted if they’re associated with :dependent => :dele
I have what I think is a very simple problem (famous last words)... 开发者_JS百科I have a Category model that has_and_belongs_to_many Events. I want to construct a simple and efficient query that fin
In my edit action of my employees_controller I have this line of code: #Employee#edit 69: if @employee.user.person.addresses.length == 0
Hey guys, in Visual Studio 2010 I can point to a bunch of classes and create a diagram. However, the diagram by default doesn\'t recognize any relationships between the classes, except inheritance an
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