relationship

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CoreData - Adding a new relationship to existing entity

I have the following basic problem: I have two entities, person and department. Before adding a new person I want to check, that the department does not already exists and if so, then link the new p[详细]

2023-02-10 09:22 分类：问答
NSFetchedResultsController change tracking across relationship

I have a model with two entities linked by a to-one relationship. I want to display in a TableView all EntityA objects where entityB.myIntAttribute equals a given value. This works when I create a Fet[详细]

2023-02-10 02:35 分类：问答
MySQL Query Complex Relationship of One Way Linking

I\'ve been pondering over this for a while.Basically I have a list of websites in a table.Each one of these websites has several posts.Each post can link to at least one other website.I keep a record[详细]

2023-02-08 16:51 分类：问答
Is there something like "has_one :through (from Rails)" in Yii Framework?

I had the following tables: manufacturers * id * name * description types * id * name * description * manufacturer_id[详细]

2023-02-07 18:54 分类：问答
DataGridView combobox column binding

OK so I have an SQL Server database. I\'m building a very simple frontend for it that consists of a combobox where I pick the table, a checkedlistbox where I choose which fields to show, and a datagr[详细]

2023-02-07 12:53 分类：问答
if using a join table, does the relationship have to be HABTM?

I have Worker, Manager, and Title models in Rails 2.x. There is also a JOIN table that has only worker_id, manager_id, and title_id (no explicit model for this). Because of this JOIN table (and not ha[详细]

2023-02-06 15:13 分类：问答
iPhone Core Data Recursive relationship

I try to create a recursive relationship in core data. I have a Model \"MenuItem\" that can contains some other \"MenuItem\", it reference itself in a too-many-relationship. To do that a created a \"c[详细]

2023-02-06 08:52 分类：问答
What is the most efficient way to manage multiple level relationships using WordPress Pods CMS

This is my first time using Pods in Wordpress, so forgive me if this is a bit of an easy question to answer.I\'ve done a bit of searching for an answer to this problem, but haven\'t found anything tha[详细]

2023-02-06 02:39 分类：问答
GWT 2.1 RequestFactory multi level relation population

I\'m using GWT 2.1 开发者_如何学Pythonalong with its RequestFactory. I understand, using the with() methode on a request for an object A, enables me to populate relations so that I can access B1 and B[详细]

2023-02-05 19:30 分类：问答
Relation one to one in sf1.4/propel

i have installed sfGuardPlugin and created this model: propel: sf_guard_user_profile: _attributes:{ phpName: sfGuardUserProfile }[详细]

2023-02-05 06:51 分类：问答