diff options
Diffstat (limited to 'actionview/lib/action_view/helpers/form_helper.rb')
| -rw-r--r-- | actionview/lib/action_view/helpers/form_helper.rb | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/actionview/lib/action_view/helpers/form_helper.rb b/actionview/lib/action_view/helpers/form_helper.rb index be5010cd9c..90bc39a478 100644 --- a/actionview/lib/action_view/helpers/form_helper.rb +++ b/actionview/lib/action_view/helpers/form_helper.rb @@ -860,24 +860,6 @@ module ActionView # # file_field(:attachment, :file, class: 'file_input') # # => <input type="file" id="attachment_file" name="attachment[file]" class="file_input" /> - # - # ==== Gotcha - # - # The HTML specification says that when a file field is empty, web browsers - # do not send any value to the server. Unfortunately this introduces a - # gotcha: if a +User+ model has an +avatar+ field, and no file is selected, - # then the +avatar+ parameter is empty. Thus, any mass-assignment idiom like - # - # @user.update(params[:user]) - # - # wouldn't update the +avatar+ field. - # - # To prevent this, the helper generates an auxiliary hidden field before - # every file field. The hidden field has the same name as the file one and - # a blank value. - # - # In case you don't want the helper to generate this hidden field you can - # specify the <tt>include_hidden: false</tt> option. def file_field(object_name, method, options = {}) Tags::FileField.new(object_name, method, self, options).render end |