discourse/lib/guardian/topic_guardian.rb

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#mixin for all guardian methods dealing with topic permisions
module TopicGuardian
def can_remove_allowed_users?(topic)
is_staff?
end
# Creating Methods
def can_create_topic?(parent)
user &&
user.trust_level >= SiteSetting.min_trust_to_create_topic.to_i &&
can_create_post?(parent)
end
def can_create_topic_on_category?(category)
can_create_topic?(nil) &&
(!category || Category.topic_create_allowed(self).where(:id => category.id).count == 1)
end
def can_create_post_on_topic?(topic)
# No users can create posts on deleted topics
return false if topic.trashed?
is_staff? || (authenticated? && user.has_trust_level?(:elder)) || (not(topic.closed? || topic.archived? || topic.trashed?) && can_create_post?(topic))
end
# Editing Method
def can_edit_topic?(topic)
!topic.archived && (is_staff? || is_my_own?(topic) || user.has_trust_level?(:leader))
end
# Recovery Method
def can_recover_topic?(topic)
is_staff?
end
def can_delete_topic?(topic)
!topic.trashed? &&
is_staff? &&
!(Category.exists?(topic_id: topic.id))
end
def can_reply_as_new_topic?(topic)
authenticated? && topic && not(topic.private_message?) && @user.has_trust_level?(:basic)
end
def can_see_topic?(topic)
return false unless topic
return true if is_admin?
return false if topic.deleted_at
# NOTE
# At the moment staff can see PMs, there is some talk of restricting this, however
# we still need to allow staff to join PMs for the case of flagging ones
# not secure, or I can see it
(not(topic.read_restricted_category?) || can_see_category?(topic.category)) &&
# not private, or I am allowed (or is staff)
(not(topic.private_message?) || (authenticated? && (is_admin? || topic.all_allowed_users.where(id: @user.id).exists?)))
end
end