Actually, I'm not so sure if post creation is passing the validation
test either :)
Sorry for being confusing.
On Feb 27, 11:09 am, robo <chase.delanguille...@gmail.com> wrote:
> Ok so I have a few models that need to interact with each other -
> Blog, Post, and User. I'll get their relationships out of the way:
>
> Blog
> has_many :posts
> has_and_belongs_to_many :users (by way of a join table, a blog can
> have many contributing users)
>
> Post
> belongs_to :blog
> belongs_to :user (the author of the post)
>
> User
> has_and_belongs_to_many :blogs (a user can contribute to many blogs)
> has_many :posts
>
> I'm running into a problem when validating posts; I want to ensure
> that the logged in user we find in the session is listed as a
> contributor to the blog they are trying to post to. I added some
> validation to my Post model, that appears to be failing when editing
> an existing post. Post creation, curiously, seems to pass the
> validation test.
>
> I should note that @user is a variable set by my ApplicationController
> using a before_filter. really sure what's going on here, so any help
> is appreciated. I'm guessing the @user set by my app controller
> probably isn't accessible by the Post class.
>
> Anyhow, here's my Post model:
>
> class Post < ActiveRecord::Base
> belongs_to :blog
> belongs_to :user
> has_many :comments
>
> validate :user_can_contribute
>
> private
> def user_can_contribute
> if @user.nil?
> logger.info("@user hasn't been set yet!")
> end
>
> if !blog.users.include?(@user)
> errors.add(:user, "You cannot contribute to this blog.")
> end
> end
> end
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