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#application_helper.rb | |
def s3_upload_policy_document(filename) | |
ret = {"expiration" => 30.minutes.from_now.utc.xmlschema, | |
"conditions" => [ | |
{"bucket" => ENV['S3BUCKET']}, | |
["starts-with", "$key", filename], | |
{"acl" => "private"}, | |
{"success_action_status" => "200"}, | |
["content-length-range", 0, 1048576] | |
] | |
} | |
Base64.encode64(ret.to_json).gsub(/\n/,'') | |
end | |
def s3_upload_signature(policy) | |
signature = Base64.encode64(OpenSSL::HMAC.digest(OpenSSL::Digest::Digest.new('sha1'), ENV['S3SECRET'], policy)).gsub("\n","") | |
end | |
#CODE FOR THE FORM | |
<% filename = "igot5onit.jpg" %> | |
<form id="AWS" action="https://whenwemarry-uploads.s3.amazonaws.com" method="post" enctype="multipart/form-data"> | |
<%= hidden_field_tag(:key, filename ) %> | |
<%= hidden_field_tag(:AWSAccessKeyId, ENV['S3KEY']) %> | |
<%= hidden_field_tag(:acl, "private") %> | |
<%= hidden_field_tag(:success_action_status, "200") %> | |
<%= hidden_field_tag(:policy, s3_upload_policy_document(filename)) %> | |
<%= hidden_field_tag(:signature, s3_upload_signature(s3_upload_policy_document(filename))) %> | |
<input id="ffileupload" type="file" name="file" multiple> | |
</form> | |
<div id="sub" style="border: solid 1px #CCC">SUBMIT</div> | |
<script type="text/javascript"> | |
$('#sub').click( function() | |
{ | |
$('#AWS').submit(); | |
}); | |
</script> | |
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