discourse/lib/guardian/category_guardian.rb

68 lines
1.9 KiB
Ruby

#mixin for all guardian methods dealing with category permisions
module CategoryGuardian
# Creating Method
def can_create_category?(parent=nil)
is_admin? ||
(
SiteSetting.allow_moderators_to_create_categories &&
is_moderator?
)
end
# Editing Method
def can_edit_category?(category)
is_admin? ||
(
SiteSetting.allow_moderators_to_create_categories &&
is_moderator? &&
can_see_category?(category)
)
end
def can_delete_category?(category)
can_edit_category?(category) &&
category.topic_count <= 0 &&
!category.uncategorized? &&
!category.has_children?
end
def cannot_delete_category_reason(category)
return I18n.t('category.cannot_delete.uncategorized') if category.uncategorized?
return I18n.t('category.cannot_delete.has_subcategories') if category.has_children?
if category.topic_count != 0
oldest_topic = category.topics.where.not(id: category.topic_id).order('created_at ASC').limit(1).first
if oldest_topic
return I18n.t('category.cannot_delete.topic_exists', {count: category.topic_count, topic_link: "<a href=\"#{oldest_topic.url}\">#{oldest_topic.title}</a>"})
else
# This is a weird case, probably indicating a bug.
return I18n.t('category.cannot_delete.topic_exists_no_oldest', {count: category.topic_count})
end
end
nil
end
def can_see_category?(category)
not(category.read_restricted) || secure_category_ids.include?(category.id)
end
def secure_category_ids
@secure_category_ids ||= @user.secure_category_ids
end
# all allowed category ids
def allowed_category_ids
@allowed_category_ids ||=
begin
unrestricted = Category.where(read_restricted: false).pluck(:id)
unrestricted.concat(secure_category_ids)
end
end
def topic_create_allowed_category_ids
@topic_create_allowed_category_ids ||= @user.topic_create_allowed_category_ids
end
end