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PORails: Virtual attributes and form values
 

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    <p>I have a Model Book with a virtual attribute for create a Editor from the Book form. The code looks like:</p> <pre><code>class Book &lt; ActiveRecord::Base has_many :book_under_tags has_many :tags, :through =&gt; :book_under_tags has_one :editorial has_many :written_by has_many :authors, :through =&gt; :written_by def editorial_string self.editorial.name unless editorial.nil? "" end def editorial_string=(input) self.editorial = Editorial.find_or_create_by_name(input) end end </code></pre> <p>And the new form:</p> <pre><code>&lt;% form_for(@book, :html =&gt; { :multipart =&gt; true }) do |f| %&gt; &lt;%= f.error_messages %&gt; ... &lt;p&gt; &lt;%= f.label :editorial_string , "Editorial: " %&gt;&lt;br /&gt; &lt;%= f.text_field :editorial_string, :size =&gt; 30 %&gt; &lt;span class="eg"&gt;Ej. Sudamericana&lt;/span&gt; &lt;/p&gt; ... </code></pre> <p>With this, when the form data no pass the validations I lost the data submited in the editorial field when the form is redisplayed, and also a new Editor is created. How I can fix this two problems? I am pretty new in ruby and I can't find a solution.</p> <p>UPDATE my controller:</p> <pre><code> def create @book = Book.new(params[:book]) respond_to do |format| if @book.save flash[:notice] = 'Book was successfully created.' format.html { redirect_to(@book) } format.xml { render :xml =&gt; @book, :status =&gt; :created, :location =&gt; @book } else format.html { render :action =&gt; "new" } format.xml { render :xml =&gt; @book.errors, :status =&gt; :unprocessable_entity } end end end </code></pre>
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