的form_tag不工作

Question

我寫了下面的代碼：

<h1>Add new book</h1> 
<%= form_tag :action => 'create' do %> 
<p><label for="book_title">Title</label>: 
<%= text_field 'book', 'title' %></p> 
<p><label for="book_price">Price</label>: 
<%= text_field 'book', 'price' %></p> 
<p><label for="book_subject">Subject</label>: 
<%= collection_select(:book, :subject_id, @subjects, :id, :name) %></p> 
<p><label for="book_description">Description</label><br/> 
<%= text_area 'book', 'description' %></p> 
<%= submit_tag "Create" %> 
<%= end %> 
<%= link_to 'Back', {:action => 'list'} %> 

我不知道爲什麼，但由於某種原因它給了我兩個錯誤：

/Developer/Rubyonrails/library/app/views/book/new.html.erb:14: syntax error, unexpected keyword_ensure, expecting ')' 
/Developer/Rubyonrails/library/app/views/book/new.html.erb:16: syntax error, unexpected keyword_end, expecting ')' 

這是爲什麼？我該如何解決它？

Answer 1

的end不應該是一個字符串發射器裏面，但嵌入式Ruby代碼：

<%= form_tag :action => 'create' do %> 
    ... 
<% end %>