Rails 3.2 file uploads

FileAPI module is used. These two files FileAPI. You can place these two files beside angular-file-upload-shim. To support CORS upload your server needs to allow cross domain requests. You can achieve that by having a filter or interceptor on your upload file server to add CORS headers to the response similar to this: sample java code.

For Amazon authentication version 4 see this comment. The demo page has an option to upload to S3. Here is a sample config options:. This article explains more about these fields and provides instructions on how to generate the policy and signature using a server side tool.

These two values are generated from the json policy document which looks like this:. The demo page provide a helper tool to generate the policy and signature from you from the json policy document. Note : Please use https protocol to access demo page if you are using this tool to generate signature and policy to protect your aws secret key which should never be shared.

Samples of these two files:. For IE flash polyfill you need to have a crossdomain. Make sure the content-type of crossdomain.

Skip to content. Star 8k. Branches Tags. Fortunately, there is an easy way to check if an uploaded file is an image:.

There are a handful of other methods to get information about the image. Remember that all these methods are analyzing the image on the fly. To do that, create and apply this migration:.

Now, upload a new image and observe the result. For this demo, we are using Amazon S3 cloud file storage, but there are some other options available:. You can even create you own data store. A cool thing about Dragonfly is that changing the data store is very easy. All you have to do is to change the initializer file. You need, of course, an Amazon AWS account, which you can create here. Create a new bucket read more about bucket naming and perfomance here and remember its name.

Create a new key pair and download it you will have no option to download it later! Change the initializer file the full list of available options can be found here :.

Be very careful with your key pair and never expose it to anyone. If you are deploying on Heroku, use its environment variables to store the key pair. It should not be present in version control! Jyothish also has a technology blog of his own. He loves working on Ruby on Rails related projects. Rails 3. It may look like this Next is your form to upload image [You can use bootstrap modal to render this form. November 27, Take a tab. Two that come to mind:. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Rails 3. Asked 9 years, 6 months ago. Active 7 years, 11 months ago. Viewed 3k times.

Currently using Rails 3. Brian 6, 3 3 gold badges 27 27 silver badges 27 27 bronze badges. Michael Michael 1 1 silver badge 6 6 bronze badges. Add a comment.

Active Oldest Votes. Michael Chaney Michael Chaney 2, 14 14 silver badges 24 24 bronze badges. Two that come to mind: Uploadify jQuery File Upload.