I\'m re-asking this question because the code and example is wrong (it actually works in the case shown).
EF 4 does not support associations that are not based on foreign/primary keys.There are lots of occasions where you need to navigate between tables using non-key fields.
I have two models: User and HairColor. A user has only 开发者_C百科one hair color, but can have many hair color preferences. What\'s the best way to model this?
I thought I came upon a solution to my problem, but still, my approach doesn\'t fit all my needs. Therefore I resort to your suggestions. Here is basically what I want to achieve:
I am developing a small mass administration rails app for our church. It shall allow the planning of future masses, essentially assigning different tasks to different ministrants (acolyte/server/altar
I have the following relationships that work in the rails console but not when I run the site what I am doing wrong?
I\'ve got t开发者_如何学运维wo Rails models, a Child and a Parent say. I know that I can do this:
I am trying to create an association to load a list of parent objects based on a child objects date field. I only want parent objects where the date is >= a given date.
I\'m trying to use Entity Framework 4.0 in my V开发者_Python百科S2010 project. I\'ve always used Linq to SQL for my projects with great success, and wanted to try using EF4 for a change. Unfortunately
Problem deleting associated entities and having this change persisted to the database. Have a groovy object parent which has many child entities associated with it. When we find this domain object an
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