Remove paper_title field

app/models/writing_book.rb

@@ -11,8 +11,6 @@ class WritingBook
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
-
-  field :paper_title, localize: true
   field :book_title, localize: true
   field :authors, localize: true
   field :extracted_chapters, localize: true
@@ -45,8 +43,6 @@ class WritingBook
   
   # before_save :clean_checkboxs
 
-  validates :paper_title, :at_least_one => true
-
   before_validation :add_http
   
   after_save :save_writing_book_files
@@ -85,8 +81,6 @@ class WritingBook
   def create_link
     title = []
     title << self.authors if self.authors.present?
-
-    # title << self.paper_title if self.paper_title.present?
     title << self.book_title if self.book_title.present?
     title << self.publisher if self.publisher.present?
     title << self.isbn if self.isbn.present?

app/views/panel/personal_book/back_end/writing_books/_form.html.erb

@@ -200,16 +200,6 @@
     
       <div class="<%= locale %> tab-pane fade <%= ( i == 0 ) ? "in active" : '' %>">
 
-        <!-- paper_title-->
-        <div class="control-group input-title">
-          <label class="control-label muted"><%= t("personal_book.paper_title") %></label>
-          <div class="controls">          	
-            <%= f.fields_for :paper_title_translations do |f| %>
-              <%= f.text_field locale, class: "input-block-level", placeholder: t("personal_book.paper_title"), value: (@writing_book.paper_title_translations[locale] rescue nil) %>
-            <% end %>
-          </div>
-        </div>
-
         <!-- book_title-->
         <div class="control-group input-title">
           <label class="control-label muted"><%= t("personal_book.book_title") %></label>

app/views/panel/personal_book/front_end/writing_books/show.html.erb

@@ -12,10 +12,6 @@
 		<tr><th><%= t("personal_book.language")%></th><td><%= @writing_book.language %></td></tr>
 		<% end %>
 
-		<% if !@writing_book.paper_title.blank? %>
-		<tr><th><%= t("personal_book.paper_title")%></th><td><%= @writing_book.paper_title %></td></tr>
-		<% end %>
-
 		<% if !@writing_book.book_title.blank? %>
 		<tr><th><%= t("personal_book.book_title")%></th><td><%= @writing_book.book_title %></td></tr>
 		<% end %>