My project is for a photographer's portfolio. He's allowed to upload
photographs, which are then displayed on the site. I'm using
attachment_fu. All of this works fine.
Where I'm running into problems is in allowing him to edit the
photographs' attributes later.
Example:
I've uploaded a picture of a spider. During the upload I enter the
title as "spider 1". Great, the photo uploads, and if I go to to
admin/index, there it is. Glorious. But oops! I forgot to
capitalize my title! So I head to admin/edit/:photo_id, a form
displays, and I correct my mistake. Then I click Update. And oh
no. :(
NoMethodError in AdminController#update
undefined method `content_type' for #<Photo:0xb67ffbf0>
I've been working on this problem for a while now. Commenting out
everything attachment_fu related in my Photos model is the only way I
can make the edit form work (which of course breaks uploading).
Here is all relevant code:
models/photo.rb:
class Photo < ActiveRecord::Base
attr_accessible :title, :description, :camera, :time, :date, :iso, :lens,
:focal_length, :exposure, :aperture
has_attachment :content_type => :image,
:storage => :file_system,
:path_prefix => 'public/photos',
:thumbnails => { :thumb => '320x200>' }
validates_as_attachment
validates_uniqueness_of :filename
def full_filename(thumbnail = nil)
file_system_path = (thumbnail ? thumbnail_class :
self).attachment_options[:path_prefix].to_s
File.join(RAILS_ROOT, file_system_path, thumbnail_name_for
(thumbnail))
end
def exifize(photo)
require 'mini_exiftool'
@photo = photo
@exif = MiniExiftool.new "public/photos/#{ @photo.filename }"
@photo.camera = @exif.model
@photo.time = @exif.datetimeoriginal.strftime('%I:%M %p')
@photo.date = @exif.datetimeoriginal.strftime('%B %d, %Y')
@photo.iso = @exif.iso
@photo.lens = @exif.lens
@photo.focal_length = @exif.focal_length
@photo.aperture = @exif.aperture
@photo.save
end
end
controllers/admin_controller.rb:
def new
@photo = Photo.new(params[:photo])
end
def create
@photo = Photo.new(params[:photo])
@photo.exifize(:photo)
@photo.save
if @photo.save
flash[:notice] = 'Yay!'
redirect_to :controller => 'admin', :action => :index
else
flash[:error] = 'boo...'
redirect_to :controller => 'admin', :action => :error
end
end
views/admin/edit.html.erb:
<% form_for :photo, :url => { :controller => 'admin',
:action => 'update',
:id => @photo } do |f| %>
<p>
<%= f.label :title %><br />
<%= f.text_field :title %>
</p>
<p>
<%= f.label :description %><br />
<%= f.text_area :description %>
</p>
<p>
<%= f.label :camera %><br />
<%= f.text_field :camera %>
</p>
...etc...
<p>
<%= f.submit "Update" %>
</p>
<% end %>
I'm lost. Please help.
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