Same code two places, getting an error in one but not the other "nil pointer evaluating interface"

support
1

Hi All
I hope this isn’t too obvious, because I’m stumped!

I have two content folders, “photos” and “projects”, both have JSON formatted markdown files with essentially the exact same variables and formatting.

Example from projects:

{"project":true,
"shortTitle":"Springfield",
"longTitle":"Springfield (2009)",
"projectDate":"2009-01-01",
"shortDescription":"A collection of photos from my first visit back home after moving to Los Angeles in 2009.",
"longDescription":"",
"links":[],
"images":[{"asset":{"tags":["Springfield"],"url":"https://cdn.sanity.io/images/rjnzi28z/production/650820f49ab6706472b9c7b9b411640f8512b450-2400x1656.jpg"}}

Example from photos:

{"collection":true,
"shortTitle":"W 4th St Courts",
"longTitle":"West 4th Street Courts, aka 'The Cage'",
"collectionDate":"2021-07-28",
"shortDescription":"Two days at the infamous West 4th Street Courts, sometimes lovingly called \"The Cage\".",
"longDescription":"",
"images":[{"asset":{"tags":["W 4th St Courts"],"url":"https://cdn.sanity.io/images/rjnzi28z/production/9642a5c3dd3c1f8d9f8087b0ca85c110a052dc80-2000x1335.jpg"}}

In my single.html template for both I have a range:

{{ range .Params.images }}
<img src={{ .asset.url }}>
{{ end }}

It works fine for projects and puts the image urls in the src field as expected. But for photos I’m getting the following error:

execute of template failed: template: photos/single.html:12:20: executing "main" at <.asset.url>: nil pointer evaluating interface {}.url

In an attempt to debug, I got the raw data returned by the range using {{ .asset }} and got essentially the same response in both layouts:

map[tags:[W 4th St Courts] url:https://cdn.sanity.io/images/rjnzi28z/production/9642a5c3dd3c1f8d9f8087b0ca85c110a052dc80-2000x1335.jpg]

map[tags:[Springfield] url:https://cdn.sanity.io/images/rjnzi28z/production/650820f49ab6706472b9c7b9b411640f8512b450-2400x1656.jpg]

I cannot for the life of me figure out why photos is throwing the nil pointer error, but projects is not. Any thoughts?

2

Just double checked my markdown file and seeing there is one rogue entry {"asset":null} which is causing the error.

So maybe not totally stumped for the life of me after all. :slight_smile:
Now need to figure out why I’m getting a null asset on my content build.

3

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