mirror of https://github.com/gohugoio/hugo
135 lines
6.1 KiB
Markdown
135 lines
6.1 KiB
Markdown
---
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title: Frequently asked questions
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linkTitle: FAQs
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description: These questions are frequently asked by new users.
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categories: [troubleshooting]
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keywords: [faq]
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menu:
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docs:
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parent: troubleshooting
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weight: 70
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weight: 70
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---
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Hugo’s [forum] is an active community of users and developers who answer questions, share knowledge, and provide examples. A quick search of over 20,000 topics will often answer your question. Please be sure to read about [requesting help] before asking your first question.
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These are just a few of the questions most frequently asked by new users.
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###### An error message indicates that a feature is not available. Why? {#feature-not-available}
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{{% include "installation/_common/01-editions.md" %}}
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When you attempt to use a feature that is not available in the edition that you installed, Hugo throws this error:
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```go-html-template
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this feature is not available in this edition of Hugo
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```
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To resolve, install a different edition based on the feature table above. See the [installation] section for details.
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###### Why do I see "Page Not Found" when visiting the home page?
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In the `content/_index.md` file:
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- Is `draft` set to `true`?
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- Is the `date` in the future?
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- Is the `publishDate` in the future?
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- Is the `expiryDate` in the past?
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If the answer to any of these questions is yes, either change the field values, or use one of these command line flags: `--buildDrafts`, `--buildFuture`, or `--buildExpired`.
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###### Why is a given page not published?
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In the `content/section/page.md` file, or in the `content/section/page/index.md` file:
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- Is `draft` set to `true`?
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- Is the `date` in the future?
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- Is the `publishDate` in the future?
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- Is the `expiryDate` in the past?
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If the answer to any of these questions is yes, either change the field values, or use one of these command line flags: `--buildDrafts`, `--buildFuture`, or `--buildExpired`.
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###### Why can't I see any of a page's descendants?
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You may have an `index.md` file instead of an `_index.md` file. See [details](/content-management/page-bundles/).
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###### What is the difference between an index.md file and an _index.md file?
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A directory with an `index.md file` is a [leaf bundle](g). A directory with an `_index.md` file is a [branch bundle](g). See [details](/content-management/page-bundles/).
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###### Why is my partial template not rendered as expected?
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You may have neglected to pass the required [context](g) when calling the partial. For example:
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```go-html-template
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{{/* incorrect */}}
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{{ partial "_internal/pagination.html" }}
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{{/* correct */}}
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{{ partial "_internal/pagination.html" . }}
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```
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###### In a template, what's the difference between `:=` and `=` when assigning values to variables?
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Use `:=` to initialize a variable, and use `=` to assign a value to a variable that has been previously initialized. See [details](https://pkg.go.dev/text/template#hdr-Variables).
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###### When I paginate a list page, why is the page collection not filtered as specified?
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You are probably invoking the [`Paginate`] or [`Paginator`] method more than once on the same page. See [details](/templates/pagination/).
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###### Why are there two ways to call a shortcode?
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Use the `{{%/* shortcode */%}}` notation if the shortcode template, or the content between the opening and closing shortcode tags, contains Markdown. Otherwise use the\
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`{{</* shortcode */>}}` notation. See [details](/content-management/shortcodes/).
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###### Can I use environment variables to control configuration?
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Yes. See [details](/getting-started/configuration/#configure-with-environment-variables).
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###### Why am I seeing inconsistent output from one build to the next?
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The most common causes are page collisions (publishing two pages to the same path) and the effects of concurrency. Use the `--printPathWarnings` command line flag to check for page collisions, and create a topic on the [forum] if you suspect concurrency problems.
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###### Why isn't Hugo's development server detecting file changes?
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In its default configuration, Hugo's file watcher may not be able detect file changes when:
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- Running Hugo within Windows Subsystem for Linux (WSL/WSL2) with project files on a Windows partition
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- Running Hugo locally with project files on a removable drive
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- Running Hugo locally with project files on a storage server accessed via the NFS, SMB, or CIFS protocols
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In these cases, instead of monitoring native file system events, use the `--poll` command line flag. For example, to poll the project files every 700 milliseconds, use `--poll 700ms`.
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###### Why is my page Scratch or Store missing a value?
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The [`Scratch`] and [`Store`] methods on a `Page` object allow you to create a [scratch pad](g) on the given page to store and manipulate data. Values are often set within a shortcode, a partial template called by a shortcode, or by a Markdown render hook. In all three cases, the scratch pad values are not determinate until Hugo renders the page content.
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If you need to access a scratch pad value from a parent template, and the parent template has not yet rendered the page content, you can trigger content rendering by assigning the returned value to a [noop](g) variable:
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```go-html-template
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{{ $noop := .Content }}
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{{ .Store.Get "mykey" }}
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```
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You can trigger content rendering with other methods as well. See next FAQ.
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[`Scratch`]: /methods/page/scratch
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[`Store`]: /methods/page/store
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###### Which page methods trigger content rendering?
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The following methods on a `Page` object trigger content rendering: `Content`, `ContentWithoutSummary`, `FuzzyWordCount`, `Len`, `Plain`, `PlainWords`, `ReadingTime`, `Summary`, `Truncated`, and `WordCount`.
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{{% note %}}
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For other questions please visit the [forum]. A quick search of over 20,000 topics will often answer your question. Please be sure to read about [requesting help] before asking your first question.
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[forum]: https://discourse.gohugo.io
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[requesting help]: https://discourse.gohugo.io/t/requesting-help/9132
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{{% /note %}}
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[`Paginate`]: /methods/page/paginate/
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[`Paginator`]: /methods/page/paginator/
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[forum]: https://discourse.gohugo.io
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[installation]: /installation/
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[requesting help]: https://discourse.gohugo.io/t/requesting-help/9132
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