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POCanCan vs. Rails Association
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2012-12-05T17:53:03.297
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I think I have gone and confused myself over the power of CanCan. I asked a longer question here - <a href="https://stackoverflow.com/questions/13717456/rails-has-many-through-null-belongs-to-multiple-belongs-to-and-deletion-of-be">Rails has_many :through, null belongs_to, multiple belongs_to and deletion of belongs_to?</a>. But at the advice of one of the members, I simplified my question with what I think is my ultimately question. In short, a <code>User</code> has a <code>Role</code> in a <code>Network</code>. A <code>User</code> can also create <code>Events</code>, however, what <code>Events</code> they can see/edit are all based on that <code>Role</code>. If a <code>User</code> loses their <code>Role</code> they no longer have access to an <code>Event</code>. Additionally, if the <code>User</code> and/or <code>Role</code> that created the <code>Event</code> is removed, the <code>Event</code> will still exists in the <code>Network</code> and be visible to all <code>Users</code> with a high enough authority (admin, manager, etc.) in their <code>Role</code>. I can use CanCan to determine if a <code>User</code> has access to an <code>Event</code> by testing their <code>Role</code>. That part is working fine. But more conceptually, if I am using CanCan to control both the access to the controller actions for <code>Events</code> as well as whether or not the <code>Event</code> is even displayed in the view based on <code>can :read</code>, is there a need for an rails <code>has_many :through</code> association between <code>Users</code> and <code>Events</code>? Since technically the <code>User</code> is only connected to the <code>Event</code> through a <code>Role</code> in a <code>Network</code>, can I just leave it to CanCan to control access, or do I need an association. Would it be good to have a method like: <pre><code>def events ... # info for grabbing all events user has access to? end </code></pre> Or is that also unnecessary?
Tags
<ruby-on-rails><associations><cancan>
Title
CanCan vs. Rails Association
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