FlashMessages語法錯誤，意外的輸入結束，期待“結束”

我使用 haml 并且我想使用 flash 訊息，但是我有一個語法錯誤，當創建部分 _messages.html.haml 并在 devise.html.haml 中呈現時我有這個錯誤：

ActionView::SyntaxErrorInTemplate in Devise::SessionsController#new

Encountered a syntax error while rendering template: check - flash.each do |name, msg| - if msg.is_a?(String) %br %div{:class => "alert alert-#{name.to_s == 'notice' ? 'success' : 'danger'}"} %button.close{"aria-hidden" => "true", "data-dismiss" => "alert", :type => "button"} × = content_tag :div, msg, :id => "flash_#{name}"

Extracted source (around line #8):
6 = content_tag :div, msg, :id => "flash_#{name}"

> Rails.root: /organizator Application
> Trace | Framework Trace | Full Trace
> app/views/layouts/_messages.html.haml:8: syntax error, unexpected
> end-of-input, expecting `end' app/views/layouts/_messages.html.haml:8:
> syntax error, unexpected end-of-input, expecting `end'

> app/views/layouts/_messages.html.haml:8: syntax error, unexpected
> end-of-input, expecting `end' app/views/layouts/_messages.html.haml:8:
> syntax error, unexpected end-of-input, expecting `end'

> app/views/layouts/_messages.html.haml:8: syntax error, unexpected
> end-of-input, expecting `end' app/views/layouts/_messages.html.haml:8:
> syntax error, unexpected end-of-input, expecting `end'

> app/views/layouts/devise.html.haml:13

Exception Causes
SyntaxError: /organizator/app/views/layouts/_messages.html.haml:8: syntax error, unexpected end-of-input, expecting `end'

在終端我有這個：

> ActionView::SyntaxErrorInTemplate (Encountered a syntax error while
> rendering template: check - flash.each do |name, msg|
>   - if msg.is_a?(String)  %br     %div{:class => "alert alert-#{name.to_s == 'notice' ? 'success' : 'danger'}"}       %button.close{"aria-hidden" => "true", "data-dismiss" => "alert", :type => "button"} ×        =
> content_tag :div, msg, :id => "flash_#{name}" ): 1:    - flash.each do
> |name, msg| 2:        - if msg.is_a?(String) 3:       %br 4:   
>   %div{:class => "alert alert-#{name.to_s == 'notice' ? 'success' :
> 'danger'}"} 5:            %button.close{"aria-hidden" => "true",
> "data-dismiss" => "alert", :type => "button"} × 6:          =
> content_tag :div, msg, :id => "flash_#{name}"
> 
> app/views/layouts/_messages.html.haml:8: syntax error, unexpected
> end-of-input, expecting `end' app/views/layouts/_messages.html.haml:8:
> syntax error, unexpected end-of-input, expecting `end'
> app/views/layouts/_messages.html.haml:8: syntax error, unexpected
> end-of-input, expecting `end' app/views/layouts/_messages.html.haml:8:
> syntax error, unexpected end-of-input, expecting `end'
> app/views/layouts/_messages.html.haml:8: syntax error, unexpected
> end-of-input, expecting `end' app/views/layouts/_messages.html.haml:8:
> syntax error, unexpected end-of-input, expecting `end'
> app/views/layouts/devise.html.haml:13

我的設計模板 devise.html.haml app/views/layouts/devise.html.haml

!!!
%html
    %head
        %meta{:content => "text/html; charset=UTF-8", "http-equiv" => "Content-Type"}/
        %title Tasker
        = csrf_meta_tags
        = csp_meta_tag
        = javascript_pack_tag 'application', 'data-turbolinks-track': 'reload'
        = stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload'
    %body
        .container
            .main-flash-messages
                = render 'layouts/messages'
        .fullscreen
            .container
                = yield

我的部分 _messages.html.haml app/views/layouts/_messages.html.haml

- flash.each do |name, msg|
    - if msg.is_a?(String)
    %br
    %div{:class => "alert alert-#{name.to_s == 'notice' ? 'success' : 'danger'}"}
        %button.close{"aria-hidden" => "true", "data-dismiss" => "alert", :type => "button"} ×
        = content_tag :div, msg, :id => "flash_#{name}"

我試圖通過閱讀haml的檔案來解決這個問題，但我不知道出了什么問題。問候。

uj5u.com熱心網友回復：

我不熟悉 HAML，但我希望取決于if條件的內容需要縮進，因此會嘗試：

- flash.each do |name, msg|
  - if msg.is_a?(String)
    %br
    %div{:class => "alert alert-#{name.to_s == 'notice' ? 'success' : 'danger'}"}
      %button.close{"aria-hidden" => "true", "data-dismiss" => "alert", :type => "button"} ×
      = content_tag :div, msg, :id => "flash_#{name}"

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