password_field_tag(要素名 [, value値, オプション or HTML属性 or イベント属性])
password_field_tag 'pass'
# <input id="pass" name="pass" type="password" />
password_field_tag 'secret', 'Your secret here'
# <input id="secret" name="secret" type="password" value="Your secret here" />
password_field_tag 'masked', nil, class: 'masked_input_field'
# <input class="masked_input_field" id="masked" name="masked" type="password" />
password_field_tag 'token', '', size: 15
# <input id="token" name="token" size="15" type="password" value="" />
password_field_tag 'key', nil, maxlength: 16
# <input id="key" maxlength="16" name="key" type="password" />
password_field_tag 'confirm_pass', nil, disabled: true
# <input disabled="disabled" id="confirm_pass" name="confirm_pass" type="password" />