次の出力を持つRubyonRailsPOSTで問題が発生しています。
Started POST "/550-674-359/pictures" for 127.0.0.1 at 2012-07-16 15:30:53 -0400
Processing by PicturesController#create as JSON
Parameters: {"utf8"=>"✓", "authenticity_token"=>"S33+XBxaGA7J+VWrr59CXKsZDk6lsI0/rBfHoYsCUUw=", "expiration_date"=>"1", "alignment"=>"center", "picture"=>{"image"=>[#<ActionDispatch::Http::UploadedFile:0x000001009a7a08 @original_filename="Sunflower.gif", @content_type="image/gif", @headers="Content-Disposition: form-data; name=\"picture[image][]\"; filename=\"Sunflower.gif\"\r\nContent-Type: image/gif\r\n", @tempfile=#<File:/var/folders/zZ/zZurKpTZFDm2y34FYgB3PLtShpg/-Tmp-/RackMultipart20120716-21348-j6977v>>]}, "url_id"=>"550-674-359"}
Gallery Load (0.3ms) SELECT "galleries".* FROM "galleries" WHERE "galleries"."url_id" = '550-674-359' LIMIT 1
(0.1ms) begin transaction
Binary data inserted for `string` type on column `image`
SQL (0.7ms) INSERT INTO "pictures" ("created_at", "description", "gallery_id", "gallery_url_id", "image", "order_number", "original_filename", "updated_at") VALUES (?, ?, ?, ?, ?, ?, ?, ?) [["created_at", Mon, 16 Jul 2012 19:30:53 UTC +00:00], ["description", nil], ["gallery_id", 28], ["gallery_url_id", "550-674-359"], ["image", "d2792dbf99.gif"], ["order_number", nil], ["original_filename", "Sunflower.gif"], ["updated_at", Mon, 16 Jul 2012 19:30:53 UTC +00:00]]
(0.6ms) rollback transaction
Completed 500 Internal Server Error in 24ms
TypeError (can't convert nil into String):
app/controllers/pictures_controller.rb:60:in `create'
60行目が明示的にマークされたcreateメソッドは次のとおりです。
# POST /pictures
# POST /pictures.json
def create
# Creates a picture class instance based on the json objects being passed in from
# Carrierwave
p_attr = params[:picture]
p_attr[:image] = params[:picture][:image].first if params[:picture][:image].class == Array
# Gets the gallery vai the uuid gallery url
@gallery = Gallery.where(:url_id => params[:url_id]).first
# Builds the picture based on the attributes passed in above from the json
@picture = @gallery.pictures.build(p_attr)
# Assigns the gallery_url_id attribute
@picture.gallery_url_id = @gallery.url_id
# Handle the picture save according to success or not
**LINE 60 ->**if @picture.save
puts @picture.inspect
respond_to do |format|
format.html {
# Calls the method in the model to format the json repsonse
render :json => [@picture.to_jq_upload].to_json,
:content_type => 'text/html',
:layout => false
}
format.json {
render :json => [@picture.to_jq_upload].to_json
}
end
else
render :json => [{:error => "custom_failure"}], :status => 304
end
end
そして、nilがデータベースにプッシュされていないことを確認しようとしているモデル：
class Picture < ActiveRecord::Base
# The attributes accesible via an @picture
attr_accessible :gallery_id, :description, :image, :gallery_url_id, :original_filename, :order_number
belongs_to :gallery
# Attatches the carrierwave uploader to the picture class
mount_uploader :image, ImageUploader
# Referenced when each picture is created, the json is formatted as the following form
def to_jq_upload
{
"name" => read_attribute(:image),
"size" => image.size,
"url" => image.url,
"thumbnail_url" => image.thumb.url,
"delete_url" => id,
"picture_id" => id,
"delete_type" => "DELETE",
"url_id" => read_attribute(:gallery_url_id),
"original_filename" => read_attribute(:original_filename),
"order_number" => testParams(read_attribute(:order_number)),
"description" => testParams(read_attribute(:description))
}
end
def testParams(id)
if id == nil
return ""
else
return id
end
end
end
私の知る限り、order_numberまたはdescriptionのいずれかがこの問題の原因であるように思われます。私が作成したtestParamsというメソッドはそれをチェックし、それに応じて処理すると思いましたが、そうではないと思います。どうすればこれを修正できますか？
編集：ここに完全なスタックトレース...
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