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MVC conundrum: How can I solve this problem and keep logic out of the view?

I'm building a site with CakePHP, but this question is more about solving an MVC problem than it is a CakePHP problem.

I have a User Model and a Group Model. This is a HABTM relationship, so different users may belong to multiple groups. One controller on my website handles the blog. It has many methods, but all of the views share a sidebar element with things like related posts, etc. I want to add some links to the sidebar of the blog that only a user开发者_StackOverflow社区 who belongs to the Admin group can see.

At first I decided to just loop in the view element through each group that the user belongs-to, and if the Admin group is found, echo the links and break the loop.

But this seems to break the MVC pattern. Is there a better way?


Just implement an isAdmin() boolean method in the User model which will encapsulate the permission checking logic, then invoke it from a view to check whether a given user is an admin or not.

As a rule of thumb, keep all the business logic in the models.

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