Pat*_*ady 7 javascript ruby-on-rails ujs turbolinks
在使用Turbolinks的Rails 5.1应用程序中,我data-disable-with在我的提交按钮中添加了一个属性,因此在单击时,该按钮将被禁用,以防止意外多次提交数据.这在许多情况下都很有用.
问题是,在使用内置的UJS帮助程序(data-remote=true)通过AJAX提交的表单上,单击提交按钮时,它不会保持禁用状态.它最初被禁用,但在下一页加载之前会快速重新启用.这违背了data-disable-with行为的要点,因为它使意外的表格重新提交.
有没有办法在加载新页面之前保持表单按钮被禁用?
这是表格:
<%= simple_form_for(
resource,
as: resource_name,
url: session_path(resource_name),
html: { class: "large", autocomplete: "on" },
remote: true
) do |f| %>
<%= f.input(
:email,
placeholder: "Email address",
label: false,
autofocus: true
) %>
<%= f.input(:password, placeholder: "Password", label: false) %>
<%= f.button(
:submit,
"Sign in",
class: "ui fluid large teal submit button",
"data-disable-with": "Signing in..."
) %>
<% end %>
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Dom*_*tie 11
data-disable-with行为)我们需要在步骤4之后重新禁用该按钮.为此,我们将监听该ajax:success事件,并使用它来禁用它setTimeout.这确保了在 Rails完成它之后它将被禁用.(您可以使用requestAnimationFrame而不是setTimeout,但它没有得到广泛支持.)
为了防止按钮被缓存在禁用状态,我们将在缓存之前重新启用它.(注意使用one而不是on防止before-cache处理程序执行多次.)
我注意到你使用的是jQuery和jquery-ujs,所以我将在下面的代码中使用这些库中的函数.将其包含在主JavaScript文件中的某处.
jQuery的UJS
;(function () {
var $doc = $(document)
$doc.on('submit', 'form[data-remote=true]', function () {
var $form = $(this)
var $button = $form.find('[data-disable-with]')
if (!$button.length) return
$form.on('ajax:complete', function () {
// Use setTimeout to prevent race-condition when Rails re-enables the button
setTimeout(function () {
$.rails.disableFormElement($button)
}, 0)
})
// Prevent button from being cached in disabled state
$doc.one('turbolinks:before-cache', function () {
$.rails.enableFormElement($button)
})
})
})()
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rails-ujs/jQuery
;(function () {
var $doc = $(document)
$doc.on('ajax:send', 'form[data-remote=true]', function () {
var $form = $(this)
var $button = $form.find('[data-disable-with]')
if (!$button.length) return
$form.on('ajax:complete', function () {
// Use setTimeout to prevent race-condition when Rails re-enables the button
setTimeout(function () {
$button.each(function () { Rails.disableElement(this) })
}, 0)
})
// Prevent button from being cached in disabled state
$doc.one('turbolinks:before-cache', function () {
$button.each(function () { Rails.enableElement(this) })
})
})
})()
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rails-ujs/vanilla JS
Rails.delegate(document, 'form[data-remote=true]', 'ajax:send', function (event) {
var form = event.target
var buttons = form.querySelectorAll('[data-disable-with]')
if (!buttons.length) return
function disableButtons () {
buttons.forEach(function (button) { Rails.disableElement(button) })
}
function enableButtons () {
buttons.forEach(function (button) { Rails.enableElement(button) })
}
function beforeCache () {
enableButtons()
document.removeEventListener('turbolinks:before-cache', beforeCache)
}
form.addEventListener('ajax:complete', function () {
// Use setTimeout to prevent race-condition when Rails re-enables the button
setTimeout(disableButtons, 0)
})
// Prevent button from being cached in disabled state
document.addEventListener('turbolinks:before-cache', beforeCache)
})
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请注意,这将禁用按钮,直到下一页data-remote使用data-disable-with按钮加载所有表单.您可能希望更改jQuery选择器以仅将此行为添加到选定的表单.
希望有所帮助!