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)
is_staff? ||
(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.blank?
return false if topic.trashed?
return true if is_admin?
trusted = (authenticated? && user.has_trust_level?(TrustLevel[4])) || is_moderator?
(!(topic.closed? || topic.archived?) || trusted) && can_create_post?(topic)
end
# Editing Method
def can_edit_topic?(topic)
return false if Discourse.static_doc_topic_ids.include?(topic.id) && !is_admin?
return false unless can_see?(topic)
return true if is_admin?
return true if is_moderator? && can_create_post?(topic)
# can't edit topics in secured categories where you don't have permission to create topics
return false if !can_create_topic_on_category?(topic.category)
# TL4 users can edit archived topics, but can not edit private messages
return true if (topic.archived && !topic.private_message? && user.has_trust_level?(TrustLevel[4]) && can_create_post?(topic))
# TL3 users can not edit archived topics and private messages
return true if (!topic.archived && !topic.private_message? && user.has_trust_level?(TrustLevel[3]) && can_create_post?(topic))
return false if topic.archived
is_my_own?(topic) && !topic.edit_time_limit_expired?
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)) &&
!Discourse.static_doc_topic_ids.include?(topic.id)
end
def can_convert_topic?(topic)
return false if topic && topic.trashed?
return true if is_admin?
is_moderator? && can_create_post?(topic)
end
def can_reply_as_new_topic?(topic)
authenticated? && topic && !topic.private_message? && @user.has_trust_level?(TrustLevel[1])
end
def can_see_deleted_topics?
is_staff?
end
def can_see_topic?(topic, hide_deleted=true)
return false unless topic
return true if is_admin?
return false if hide_deleted && topic.deleted_at && !can_see_deleted_topics?
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if topic.private_message?
return authenticated? && topic.all_allowed_users.where(id: @user.id).exists?
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end
can_see_category?(topic.category)
end
def can_see_topic_if_not_deleted?(topic)
can_see_topic?(topic, false)
end
def filter_allowed_categories(records)
unless is_admin?
allowed_ids = allowed_category_ids
if allowed_ids.length > 0
records = records.where('topics.category_id IS NULL or topics.category_id IN (?)', allowed_ids)
else
records = records.where('topics.category_id IS NULL')
end
records = records.references(:categories)
end
records
end
def can_edit_featured_link?(category_id)
return false unless SiteSetting.topic_featured_link_enabled
Category.where(id: category_id||SiteSetting.uncategorized_category_id, topic_featured_link_allowed: true).exists?
end
end