JSON section has broken gifDecoder in the print version

[jon4syth]

Please fill in the following information:

• My programming background is: Professional backend developer
• I want to learn Elm because: I know Elm, just getting back into it after a few years hiatus because want to introduce it at work
• I was confused by: Why I didn't get the cat gifs as expected when coding along with the example.

Current:

gifDecoder : Decoder String
gifDecoder =
  field "data" (field "image_url" string)

Should be:

gifDecoder : Decoder String
gifDecoder =
  field "data" (field "images" ( field "original" ( field "url" string )))

I didn't do a PR because it would necessitate changing the prose to match the code as well. I guess clicking the "Edit" button gets around this since that code has this fix, so maybe this is not a needed change since beginners are more likely to click the edit button?? If you want to explain the slightly more complex example that matches the current giphy API, I'd be happy to do a PR on the prose, but wanted to check first ;). I think a good solution that is future-proof would be to host a JSON API and the image urls at elm-lang.org as with the HTTP text example or (less future-proof) use a different public API with a singly nested structure.

-Jon

[mandolyte]

Suggested on Slack by janiczek

Decode.at ["data", "images", "original", "url"] Decode.string

instead of the nested decode fields