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    <p>To create an upload with paperclip, you need to use the name you provided for the <code>has_attached_file</code> line, on the model you defined it on. In your case, this will result in this view code:</p> <pre><code>&lt;%= form_for @accommodation, :html =&gt; { :multipart =&gt; true } do |f| %&gt; &lt;%= f.fields_for :photo do |photo_fields| %&gt; &lt;p&gt; Photo&lt;br /&gt; &lt;%= photo_fields.file_field :image %&gt; &lt;/p&gt; &lt;% end %&gt; &lt;% end %&gt; </code></pre> <p>In the controller:</p> <pre><code>class AccommodationsController &lt; ApplicationController # also protect create and update actions! before_filter :login_required, :only =&gt; [ :new, :create, :edit, :update ] def new # always make objects through their owner @accommodation = current_user.accommodations.build @accommodation.build_photo end def create @accommodation = current_user.accommodations.build(params[:accommodation]) if @accommodation.save # always redirect after successful save/update redirect_to @accommodation else render :new end end end </code></pre> <p>Tell Rails to handle the nested form:</p> <pre><code>class Accommodation has_one :photo accepts_nested_attributes :photo attr_accessible :photo_attributes, :title, :description, :etc end </code></pre> <p>And make sure to set the accessible attributes right in your photo model:</p> <pre><code>class Photo attr_accessible :image # individual attributes such as image_file_name shouldn't be accessible has_attached_file :image, :styles =&gt; "etc" end </code></pre> <p>Be sure to watch your log files to spot things that are protected by <code>attr_accessible</code>, but still are in your form.</p>
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    1. COIain, thank you very much! Getting the hang of this now, your recommendations made this work perfectly.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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