Can't have privileges with different conditions in the same permission block

[zeiv]

For example, the following does not work:

has_permission_on :blog_posts do
    to :read
    to :manage do
        if_attribute blog: { user_id: is { user.id } }
    end
end

Instead, you have to do this, which is not as DRY (or readable):

has_permission_on :blog_posts, to: :read
has_permission_on :blog_posts, to: :manage do
    if_attribute blog: { user_id: is { user.id } }
end

Ideally, shouldn't all a role's privileges for an object be definable in one permission block?