I am trying to implement multiple relations between records of the same model via self-joins (based on @Shtééf\'s answer). I have the following models
I would like my User to be associated with specific Email\'s, when they receive them. In this way, I can look up an array of what emails they have received.
I need to associate an entity with two lists of other entities – both lists containing entities of the same type.It looks something like this:
I have an important model in my application, with many associations. If I want to check all the references in a before_destroy callback, i\'d have to do something like:
I\'m just starting now a small project so I can learn more of the new possibilities in RoR 3 . So I was reading about associations between objects, more specific the \"build\" method. Mu problem is wh
I read many times about Association, Composition and Aggregation. What will the simple code in c# of these three terms? I have understood about t开发者_运维问答he difference of Composition and Aggrega
It appears some of my seeds are not saving. For starters, I will show a console session so you can see that the \'instructor_id\' is indeed being set in the console, but not when I seed.
I have a Partner model that has_and_belongs_to_many Projects, while each Project has_many Sites.I want to retrieve all sites for a given partner (and am not interested in the projects in between at th
Part of My Item Model: Ext.define(\'DnD.model.Item\', { extend: \'Ext.data.Model\', idProperty:\'item_number\',
I have 3 classes: Group and User, connected by a join table called Membership. Membership has a attribute \"role\" which tells us about the role that user is playing in the group.
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