ruby-on-rails - 非法嵌套 : nesting within plain text is illegal

Question

我是 HAML 的新手，我有一个错误:Illegal nesting: nesting within plain text is illegal. .目前，我正在尝试将我的 erb 更改为 haml，但它不起作用。这是我的 erb。

<script src="https://js.braintreegateway.com/v2/braintree.js"></script>
<h2 class="mbs">New Subscription
</h2>
<%= simple_form_for :subscription, :url => subscribe_subscription_path(@plan.id), :id => "checkout-form" do |f| %>
  <% if current_user and !current_user.has_payment_info? %>
    <%= render 'customer_form'%>
  <% end %>
  <br/>
  <p> Please enter payment details: </p>
  <div id="payment-form"></div>
  <div id="coinbase-container-id"></div>
  <div class="form-actions">
    <%= f.submit t(:subscribe), :class => 'btn btn-primary' %>
  </div>
  <script charset="utf-8" type="text/javascript">
    var clientToken = "<%= @client_token %>";
    braintree.setup(clientToken, "dropin", {
      container: "payment-form",
      coinbase: { container: "coinbase-container-id" }
      });
  </script>
<% end %>

我的 HAML 是:

%script{:src => "https://js.braintreegateway.com/v2/braintree.js"}
%h2.mbs
New Subscription
= simple_form_for :subscription, :url => subscribe_subscription_path(@plan.id), :id => "checkout-form" do |f|
  - if current_user and !current_user.has_payment_info?
    = render 'customer_form'
  %br/
  %p Please enter payment details:
  #payment-form
  #coinbase-container-id
  .form-actions
    = f.submit t(:subscribe), :class => 'btn btn-primary'
  %script{:charset => "utf-8", :type => "text/javascript"}
    var clientToken = "#{@client_token}";
    braintree.setup(clientToken, "dropin", {
      container: "payment-form",
      coinbase: { container: "coinbase-container-id" }
    });

怎么了？为什么会显示这个错误？

Answer 1

问题出在您的 script标签:

%script{:charset => "utf-8", :type => "text/javascript"}
  var clientToken = "#{@client_token}";
  braintree.setup(clientToken, "dropin", {
    container: "payment-form",
    coinbase: { container: "coinbase-container-id" }
  });

线路container: "payment-form",比前一行缩进更多，Haml 试图将它解析为一个块或一个标签的内容，但前一行是纯文本并且没有任何一个。

要修复它，您可以使用 :javascript filter它允许在其下方混合缩进:

:javascript
  var clientToken = "#{@client_token}";
  braintree.setup(clientToken, "dropin", {
    container: "payment-form",
    coinbase: { container: "coinbase-container-id" }
  });

:javascript过滤器还添加了 <script>标签。如果你有理由控制这个标签的属性，你可以使用 :plain filter使用您自己的标语:

%script{:data => {:example => "Foo"}}
  :plain
    var clientToken = "#{@client_token}";
    braintree.setup(clientToken, "dropin", {
      container: "payment-form",
      coinbase: { container: "coinbase-container-id" }
    });