From 246f07c7512eca59fb304162b1b1d7dea5eb6e64 Mon Sep 17 00:00:00 2001 From: Yves Senn Date: Thu, 17 Jul 2014 17:23:47 +0200 Subject: docs, `select` and friends with `multiple=true` include a blank string. [Jonas Baumann & Yves Senn] The submitted params from a select with `multiple: true` look as follows: ``` {post: {category: [""]}} {post: {category: ["", "Category 1", "Category 2"]}} ``` This is a follow up to #1552. --- actionview/lib/action_view/helpers/form_options_helper.rb | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/actionview/lib/action_view/helpers/form_options_helper.rb b/actionview/lib/action_view/helpers/form_options_helper.rb index 48f42947db..528e2828a1 100644 --- a/actionview/lib/action_view/helpers/form_options_helper.rb +++ b/actionview/lib/action_view/helpers/form_options_helper.rb @@ -152,11 +152,9 @@ module ActionView # To prevent this the helper generates an auxiliary hidden field before # every multiple select. The hidden field has the same name as multiple select and blank value. # - # This way, the client either sends only the hidden field (representing - # the deselected multiple select box), or both fields. Since the HTML specification - # says key/value pairs have to be sent in the same order they appear in the - # form, and parameters extraction gets the last occurrence of any repeated - # key in the query string, that works for ordinary forms. + # Note: The client either sends only the hidden field (representing + # the deselected multiple select box), or both fields. This means that the resulting array + # always contains a blank string. # # In case if you don't want the helper to generate this hidden field you can specify # include_hidden: false option. -- cgit v1.2.3