paperclip

I'm trying to upload an image file via http post method from android device to rails server. But posting an image is not working. More specifically, the post parameter (including image file) doesn't seem to be sent correctly. I'm using Android Asynchronous Http Client (http://loopj.com/android-async-http/) to post an image from android, and the code for posting image is like this. public static void postImage(){ RequestParams params = new RequestParams(); params.put("picture[name]","MyPictureName"); params.put("picture[image]",File(Environment.getExternalStorageDirectory().getPath() + "

I'm using paperclip in a rails app and have the following three validations in my model validates_attachment_presence :photo validates_attachment_size :photo, :less_than=>1.megabyte validates_attachment_content_type :photo, :content_type=>['image/jpeg', 'image/png', 'image/gif'] If the user forgets to add an attachment, all three validations fail and thus, the user is presented with the following three errors: # Photo file name must be set. # Photo file size file size must be between 0 and 1048576 bytes. # Photo content type is not included in the list I think it would be best to just show the

I would like to crop images on upload using Paperclip to get square thumbs from the center of the original picture. I find out a method in documentation that seems to do exactly what I want: transformation_to(dst, crop = false) The problem is that I can't figure out where to use this method. It would be great to simply pass something as a parameter here: has_attached_file :picture, :styles => { :medium => "600x600>", :thumb => "something here" } You only need to use # instead of > as a parameter: has_attached_file :picture, :styles => { :thumb => "200x200#" } 来源： https://stackoverflow.com

I have a rails application that has multiple models with paperclip attachments that are all uploaded to S3. This app also has a large test suite that is run quite often. The downside with this is that a ton of files are uploaded to our S3 account on every test run, making the test suite run slowly. It also slows down development a bit, and requires you to have an internet connection in order to work on the code. Is there a reasonable way to set the paperclip storage mechanism based on the Rails environment? Ideally, our test and development environments would use the local filesystem storage,

I have a one-to-many association between a Banana model and an Image model. In addition, each Banana and Image belong to a User (via a separate association because an Image and its Banana might have different Users). I would like a nested form to create Bananas as well as Images. The kicker is that I don't know how many Images to build (note the multiple attribute). The commented out bit of the form below will create the appropriate amount of Images, but won't complete the associated User reference. Is there a way to accomplish this with fields_for (so the associations are completed) as I've

I'm new in rails, I need to install Peperclip ( https://github.com/thoughtbot/paperclip ) and i can't, I have looked every tutorial I can find and I haven't been able to find where is the bug. I installed the ImageMagick and follow all the instruction of github. When I run: rails generate paperclip club imagen I got this /Users/Moski/.rvm/gems/ruby-2.0.0-p451@railstutorial_rails_4_0/gems/railties-4.0.4/lib/rails/generators/actions/create_migration.rb:13:in `migration_file_name': protected method `migration_file_name' called for #<PaperclipGenerator:0x000001053fbb68> (NoMethodError) from /Users