Errors on site without expected parameters set

[paskal]

Hello!

$subj, when trying to run this theme against my blog source I get following (and site won't render at all):

Building sites … ERROR 2018/03/20 14:45:16 Error while rendering "page" in "post/": template: theme/_default/single.html:1:3: executing "theme/_default/single.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
ERROR 2018/03/20 14:45:16 Error while rendering "page" in "": template: theme/_default/single.html:1:3: executing "theme/_default/single.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
ERROR 2018/03/20 14:45:17 Error while rendering "taxonomy" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
ERROR 2018/03/20 14:45:17 Error while rendering "section" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
ERROR 2018/03/20 14:45:17 Error while rendering "home" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
ERROR 2018/03/20 14:45:17 Error while rendering "taxonomyTerm" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
ERROR 2018/03/20 14:45:17 Error while rendering "404" in "": template: theme/404.html:1:3: executing "theme/404.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>

Change detected, rebuilding site
2018-03-20 14:46:02.673 +0000
Source changed "/srv/hugo/content/post/2018-03-19-lust-for-text-life.markdown": WRITE
ERROR 2018/03/20 14:46:02 Error while rendering "page" in "post/": template: theme/_default/single.html:1:3: executing "theme/_default/single.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
ERROR 2018/03/20 14:46:02 Error while rendering "home" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
ERROR 2018/03/20 14:46:02 Error while rendering "404" in "": template: theme/404.html:1:3: executing "theme/404.html" at <partial "header" .>: error calling partial: template: theme/partials/header.html:6:18: executing "theme/partials/header.html" at <delimit .Site.Params...>: error calling delimit: can't iterate over <nil>
Total in 144 ms

The reason is likely some absent .Site. parameter but you can't tell it from error message, I guess input parameters handling could be improved.

[paskal]

victoriadrake/hugo-theme-sam#3 is an example of how this can be fixed.