How to make transparent gif pixel in Phoenix?

Question

Based on the Rails background, I was hoping I could display a transparent pixel gif. For this, in Rails, I just

gif_data = "GIF89a\x01\x00\x01\x00\x80\xFF\x00\xC0\xC0\xC0\x00\x00\x00!\xF9\x04\x01\x00\x00\x00\x00,\x00\x00\x00\x00\x01\x00\x01\x00\x00\x01\x012\x00;" respond_to do |format| format.gif { render text: gif_data, content_type: "image/gif" } end 

Would like a cleaner way to do this than my own.

Answer 1

After some string encodings and training. I converted the hex code of the actual transparent gif

 47 49 46 38 39 61 01 00 01 00 80 00 00 00 00 00 FF FF FF 21 F9 04 01 00 00 00 00 2C 00 00 00 00 01 00 01 00 00 02 01 44 00 3B 

using the hexate package in this

 <<71, 73, 70, 56, 57, 97, 1, 0, 1, 0, 128, 0, 0, 0, 0, 0, 255, 255, 255, 33, 249, 4, 1, 0, 0, 0, 0, 44, 0, 0, 0, 0, 1, 0, 1, 0, 0, 2, 1, 68, 0, 59>> 

so for using this in a phoenix controller i can

 gif_data = <<71, 73, 70, 56, 57, 97, 1, 0, 1, 0, 128, 0, 0, 0, 0, 0, 255, 255, 255, 33, 249, 4, 1, 0, 0, 0, 0, 44, 0, 0, 0, 0, 1, 0, 1, 0, 0, 2, 1, 68, 0, 59>> conn = put_resp_content_type(conn, "image/gif") text conn, gif_data