2009/3/11 Carlos Santana <[email protected]> > > Thanks Colin.. > > I am using ternary operator on @currentuser: > @currentuser ? can_admin?(topic) : false . > > User model method: topic_admin changed to can_create > Topic model method: can_admin changed to can_be_created_by > > @currentuser.can_create?(topic) > > ### User model has this method: > def can_create?(topic) > topic.can_be_created_by?(self) > end > ---- > > ### Topic model has this method: > def can_be_created_by?(user) > valid_roles = %w{admin editor} > if valid_roles.include?(user.role.name) > return true > else > return false > end > end > --- > > Problem - > I have nested resources in my application - (topic has_many items). And > on my show topic page I have a link to 'Add new item'. I would like to > show this link only to users with certain roles. However, I am not able > to pass this resource (item) as it has not been initialized. So how can > I call method like: @currentuser.can_create?(item) from my show topic > page. I am initializing resource objects within the controller, but how > can I initialize these from my view? Do I need to? Any clues? > > Are there different types of Topic? If not then can_create? does not need to be given a topic. Make can_be_created_by? a class method rather than an instance method, so it is called by Topic.can_be_created_by?(user).
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