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POBase64 upload from Android/Java to RoR Carrierwave
 

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  1. POBase64 upload from Android/Java to RoR Carrierwave
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    <p>I added the solution from <a href="https://stackoverflow.com/questions/7622404/use-base64-image-with-carrierwave">use base64 image with Carrierwave</a> in an effort to upload an image from a java class. This is now what my FileUploader class looks like -- and I believe to be where the problem is:</p> <pre><code># encoding: utf-8 class FileUploader &lt; CarrierWave::Uploader::Base # Include RMagick or MiniMagick support: include CarrierWave::RMagick # include CarrierWave::MiniMagick # Choose what kind of storage to use for this uploader: storage :file # storage :fog #START FROM BASE64 POST LINKED ABOVE class FilelessIO &lt; StringIO attr_accessor :original_filename attr_accessor :content_type end before :cache, :convert_base64 def convert_base64(file) if file.respond_to?(:original_filename) &amp;&amp; file.original_filename.match(/^base64:/) fname = file.original_filename.gsub(/^base64:/, '') ctype = file.content_type decoded = Base64.decode64(file.read) file.file.tempfile.close! decoded = FilelessIO.new(decoded) decoded.original_filename = fname decoded.content_type = ctype file.__send__ :file=, decoded end file end #END FROM POST LINKED ABOVE # Override the directory where uploaded files will be stored. # This is a sensible default for uploaders that are meant to be mounted: def store_dir "uploads/#{model.class.to_s.underscore}/#{model.user_id}" end # Provide a default URL as a default if there hasn't been a file uploaded: # def default_url # "/images/fallback/" + [version_name, "default.png"].compact.join('_') # end # Process files as they are uploaded: # process :scale =&gt; [200, 300] # # def scale(width, height) # # do something # end # Create different versions of your uploaded files: version :thumb do process :resize_to_fit =&gt; [200, 300] end version :web do process :resize_to_fit =&gt; [1000, 1000] end # Add a white list of extensions which are allowed to be uploaded. # For images you might use something like this: def extension_white_list %w(jpg jpeg gif png) end # Override the filename of the uploaded files: # Avoid using model.id or version_name here, see uploader/store.rb for details. def filename if original_filename Time.new.to_i.to_s+"_"+original_filename end end end </code></pre> <p>The picture model:</p> <pre><code>class Picture &lt; ActiveRecord::Base belongs_to :user belongs_to :folders attr_accessible :user_id, :picture_name, :picture_description, :folder_id, :picture_path, :file_save mount_uploader :picture_path, FileUploader before_save :update_pictures_attributes def update_pictures_attributes self.file_size = picture_path.file.size end end </code></pre> <p>Right now when the Post call is made the file path that is saved in the db is nil -- but everything else is saved. Here is the java/android class:</p> <pre><code>import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.apache.http.client.*; import org.apache.http.client.entity.*; import org.apache.http.client.methods.*; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.*; import org.apache.http.message.*; import org.apache.commons.io.FileUtils; import org.json.*; import android.util.Base64; import android.util.Log; public class Uploader { private String url; private String fileName; public Uploader(String url, String fileName){ this.url = url; this.fileName = fileName; } public Boolean upload() throws JSONException, ClientProtocolException, IOException { Boolean success = true; JSONObject jsonObject = constructPictureJson(); DefaultHttpClient httpClient = new DefaultHttpClient(); ResponseHandler &lt;String&gt; responseHandler = new BasicResponseHandler(); HttpPost postMethod = new HttpPost(url); postMethod.setEntity(new StringEntity(jsonObject.toString())); postMethod.setHeader("Accept", "application/json"); postMethod.setHeader("Content-type", "application/json"); postMethod.setHeader("Data-type", "json"); try{ httpClient.execute(postMethod, responseHandler); } catch (org.apache.http.client.HttpResponseException error){ Log.d("Uploader Class Error", "Error code: "+error.getStatusCode()); Log.d("Uploader Class Error", "Error message: "+error.getMessage()); success = false; } //Log.d("server resposne", response); return success; } public JSONObject constructPictureJson() throws JSONException, IOException{ String userId = "1"; String folderId = "1"; String[] file = fileName.split("/"); JSONObject pictureData = new JSONObject(); pictureData.put("user_id", userId); pictureData.put("folder_id", folderId); pictureData.put("picture_name", "picture name"); pictureData.put("picture_description", "1"); pictureData.put("content_type", "jpg"); pictureData.put("original_filename", "base64:"+file[file.length-1]); pictureData.put("filename", file[file.length-1]); pictureData.put("picture_path", encodePicture(fileName)); return pictureData; } public String encodePicture(String fileName) throws IOException{ File picture = new File(fileName); return Base64.encodeToString(FileUtils.readFileToByteArray(picture), Base64.DEFAULT); } } </code></pre> <p>Does anyone have any ideas? I've been stuck on this all day. I think because I don't know much about Ruby I am either (1) malforming the request; or (2) I implemented the base64 image with Carrierwave incorrectly. </p>
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