Create ubercart Pre Order drupal 7 -

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i looking solution create pre-order function using ubercart 3 , drupal 7

basically creating website whereby registered retail customers can place orders online using website want add products site have not arrived yet , have add order button display pre-order , show eta of when product arriving.

anyone have idea how can achieve ?

the estimated time of arrival can simple product date field set.

also, since want product available preorder can alter button label using hook_form_alter. , if statement button (so alter products have preorder) eta field above or helper field of boolean type enable "preorder" state.


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