使用activerecord將圖像上傳到Postgres數據庫時出現錯誤API

我試圖將我的網頁轉換爲新的Twitter Bootstrap HAML方法，但是當將圖像上傳到表單時遇到了麻煩。表單是POST到使用activerecord將參數放入數據庫的API。在舊網頁上提交應用程序，並通過API工作，不與我的新HAML表單一起提交。以下是圖標上傳字段的新舊代碼，以及將圖像上傳到數據庫的API代碼。使用activerecord將圖像上傳到Postgres數據庫時出現錯誤API

我一直收到的錯誤是「無法將符號轉換爲整數」，我認爲問題在於從實際上傳的圖標中獲取[：filename]。

新代碼：

%div{:class=>classes_for_form_input(@data, :icon)} 
     %label.control-label{:for => "icon"} *Icon: 
     .controls 
      %input{:name=>"icon", :type=>"file", :id => "icon", :class => "fileinput", :title => "App Icon", :value=>@data[:icon]} 
      %span.help-inline #{help_message_for_form_input @data, :icon }

舊代碼：

<td class="uploadtabletd1l"><label for="icon">*Icon: </label></td><td class="uploadtabletd1r"><input type="file" class="fileinput" name="icon" id="icon" size="18" title="Icon (128x128 Pixels, Max 100 Characters)" />#{tip1}#{iconhelp}#{tip2}</td>

API環路上傳的圖標：

attr = app.attributes() 
attr.each do |k,v| 

    if @vals.include?(k) 
    if k == "icon" then 
     attr[k] = @vals[k][:filename] 
    else 
     attr[k] = @vals[k] 
    end 
    end 
end

堆棧錯誤消息是給下面的錯誤，因爲我使用會話：success_message重定向到顯示上傳的應用程序的頁面。

NoMethodError at /appdetails 
undefined method `first' for nil:NilClass 
file: home.rb location: block in <top (required)> line: 94 
/gas/dev/routes/home.rb in block in <top (required)> 
@app = result['appinfo'].first 
/usr/local/lib/ruby/1.9.1/webrick/httpserver.rb in service 
    si.service(req, res) 
/usr/local/lib/ruby/1.9.1/webrick/httpserver.rb in run 
     server.service(req, res) 
/usr/local/lib/ruby/1.9.1/webrick/server.rb in block in start_thread 
     block ? block.call(sock) : run(sock)

的「廣東話轉換符號整數從下面的代碼行即將在那裏我嘗試打印API調用的結果在數據庫中創建應用程序

result = @client.createapp(@vals) # This is calling the API to return the vals that were inputted into the database 
puts result.to_s

這裏是home.rb文件：行94是@app =結果[「APPINFO」]第一

get '/appdetails/?' do 
# include some page specific scripts and styles via the layout 
@page_scripts = ["jquery.colorbox-min.js", "gass-apps.js", "jquery.rateit.min.js"] 
@page_styles = ["colorbox.css", "rateit.css"] 

#TODO Handle case for unknown app id 
result = @client.appinfo(:app_id=>params[:id]) 
puts __FILE__.to_s + '(' + __LINE__.to_s + '):' + result 
@app = result['appinfo'].first 

#get screenshots into an array that the view can iterate through 
screenshot_properties = ["screenshot1", "screenshot2", "screenshot3", "screenshot4"] 
@screenshots = [] 

screenshot_properties.each do |screenshot| 
    @screenshots << @app[screenshot] if @app.has_key? screenshot 
end 

@reviews = @client.getreviews(:app_id=>params[:id], :order=>'reverse')['getreview'] 

@favorite = false 
#TODO - a more direct API call would be better than iterating over all the favorites 
userFavorites = @client.getuserfavorites()['getuserfavorites'] 
userFavorites.to_a.each do |favorite| 
    @favorite = true if favorite['app_id'] == params[:id].to_i 
end 

# Increment the view count for this app 
plural = "s" 
viewcount = @app['view_count'] 
if viewcount.to_s == '0' 
    plural = "" 
end 
viewcount += 1 
result = @client.updateappviewcount(:app_id=>params[:id], :view_count=>viewcount)

行：。在一般啞錯誤，我複製粘貼的形式設置在忘了包括ENCTYPE =「多部分/ form-data「。但是， Sinatra現在正在返回enctype未定義？我需要這個嗎？

來源

2012-10-02 cjl5108

另一件需要注意的事情是我運行了」puts「命令，並將@vals [圖標「]在API循環到達圖標之前返回圖像名稱，但在到達圖標循環後失敗 – cjl5108

錯誤引用了您尚未提供的文件。 – willglynn

問題在於表單標籤中。忘記包含「enctype =」multipart/form-data「或HAML：enctype =」multipart/form-data「

來源

2012-10-04 14:37:58 cjl5108

使用activerecord將圖像上傳到Postgres數據庫時出現錯誤API

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