Hi all,
I'm tryind to parse Reddit JSON <#> but I think I'm failing at the
Json.Decoder— however I'm not sure if that really is the problem, and I
don't know what else to try.
The (ugly) JSON has this format (not so ugly after cleaned up, BTW):
{
"data": {
"children": [
{
"data": {
"title": "Post title",
"url": "http://po.st/url";,
"domain": "po.st",
…
},
…
},
…
],
…
}
…}
I want to parse the title, url and domain inside data.children[i].data
(where i stands for each element of the list/array) in news list from my
Elm model:
type alias NewsItem =
{ title : String
, url : String
, domain : String
}
type alias Model =
{ news : List NewsItem }
I've tried this without success:
decodeNewsItem : Json.Decoder NewsItemdecodeNewsItem =
Json.object3 NewsItem
(Json.at ["data", "title"] Json.string)
(Json.at ["data", "url"] Json.string)
(Json.at ["data", "domain"] Json.string)
decodeNews : Json.Decoder (List NewsItem)decodeNews =
Json.at ["data", "chidren"] (Json.list decodeNewsItem)
The compiler throws no error at all, but once I open it (either with
elm-reactor or the HTML from elm-make) the screen is blank (no errors, but
no posts actually loaded from Reddit):
What am I doing wrong? The full Elm script, with Task and init is here <#>.
Many thanks,
Eduardo Cuducos
http://cuducos.me <#>
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