在Github Pages上构建时无效的日期 [英] Invalid date while building on Github Pages
问题描述
我将更新推送到我的Github Pages站点，但构建失败.不过在本地构建起来还不错.
I pushed an update to my Github Pages site and it fails the build. Locally it builds just fine though.
回购: https://github.com/valeIT/valeIT.github.io/
页面构建失败，并出现以下错误:
The page build failed with the following error:
值"nil"已传递到与日期相关的预期有效的过滤器
日期以/_layouts/post.html或其布局之一显示.欲了解更多
信息，请参阅
https://help.github .com/articles/page-build-failed-date-is-not-a-valid-datetime/.
The value 'nil' was passed to a date-related filter that expects valid
dates in /_layouts/post.html or one of its layouts. For more
information, see
https://help.github.com/articles/page-build-failed-date-is-not-a-valid-datetime/.
有关对Jekyll进行故障排除的信息，请参见:
For information on troubleshooting Jekyll see:
https://help.github.com/articles/troubleshooting-jekyll-builds
我看了看"/_layouts/post.html"，但是我对Liquid的了解是非常基础的，看不到任何错误.
I took a look at "/_layouts/post.html", but my knowledge of Liquid is pretty basic and couldn't see anything wrong in it.
post.html的内容:
Content of post.html:
---
---
<!DOCTYPE html>
<html>
{% include head.html %}
<body itemscope itemtype="http://schema.org/Article">
{% include header.html %}
<main class="content" role="main">
<article class="post">
{% if page.image %}
<div class="article-image">
<div class="post-image-image" style="background-image: url({% if page.image %}{{ page.image }}{% endif %})">
Article Image
</div>
<div class="post-image-image2" style="background-image: url({% if page.image2 %}{{ page.image2 }}{% endif %})">
Article Image
</div>
<div class="post-meta">
<h1 class="post-title">{{ page.title }}</h1>
<div class="cf post-meta-text">
<div class="author-image" style="background-image: url({{ site.author_image }})">Blog Logo</div>
<h4 class="author-name" itemprop="author" itemscope itemtype="http://schema.org/Person">{{ site.author }}</h4>
on
<time datetime="{{ page.date | date: "%F %R" }}">{{ page.date | date_to_string }}</time>
<!-- , tagged on {{#foreach tags}}<span class="post-tag-{{slug}}">{{#if @first}}{{else}}, {{/if}}<a href="/tag/{{slug}}">{{name}}</a></span>{{/foreach}} -->
- {{ page.content | number_of_words }} Words - {{ content | reading_time_as_i }}.
</div>
<div style="text-align:center">
<a href="#topofpage" class="topofpage"><i class="fa fa-angle-down"></i></a>
</div>
</div>
</div>
{% else %}
<div class="noarticleimage">
<div class="post-meta">
<h1 class="post-title">{{ page.title }}</h1>
<div class="cf post-meta-text">
<div class="author-image" style="background-image: url({{ site.author_image }})">Blog Logo</div>
<h4 class="author-name" itemprop="author" itemscope itemtype="http://schema.org/Person">{{ page.author }}</h4>
on
<time datetime="{{ page.date | date_to_xmlschema }}">{{ page.date | date_to_string }}</time>
<!-- , tagged on {{#foreach tags}}<span class="post-tag-{{slug}}">{{#if @first}}{{else}}, {{/if}}<a href="/tag/{{slug}}">{{name}}</a></span>{{/foreach}} -->
</div>
</div>
</div>
<br>
<br>
<br>
{% endif %}
<section class="post-content">
<div class="post-reading">
<span class="post-reading-time"></span> read
</div>
<a name="topofpage"></a>
{{content}}
</section>
<footer class="post-footer">
<section class="share">
{% for social in site.social %}
{% if social.share_url != null %}
<a class="icon-{{ social.icon }}" href="{{ social.share_url }}{{ social.share_title }}{{page.title | cgi_escape}}{{ social.share_link }}{{site.url}}{{page.id}}"
onclick="window.open(this.href, '{{ social.icon }}-share', 'width=550,height=255');return false;">
<i class="fa fa-{{ social.icon }}"></i><span class="hidden">{{ social.icon }}</span>
</a>
{% endif %}
{% endfor %}
</section>
</footer>
<div class="bottom-teaser cf">
<div class="isLeft">
<h5 class="index-headline featured"><span>Written by</span></h5>
<section class="author">
<div class="author-image" style="background-image: url({{site.author_image}})">Blog Logo</div>
<h4>{{ site.author }}</h4>
<p class="bio">{{author.bio}}</p>
<hr>
<p class="published">Published <time datetime="{{ page.date | date: "%F %R" }}">{{ page.date | date_to_string }}</time></p>
</section>
</div>
{{/post}}
<div class="isRight">
<h5 class="index-headline featured"><span>Supported by</span></h5>
<footer class="site-footer">
<section class="poweredby"><a href ="{{site.url}}/apps">Check Out My Apps</a></section>
<a class="subscribe" href="{{ "/feed.xml" | prepend: site.baseurl }}"> <span class="tooltip"> <i class="fa fa-rss"></i> You should subscribe to my feed.</span></a>
<div class="inner">
<section class="copyright">All content copyright <a href="{{@blog.url}}/">{{site.author}}</a> © {{ site.time | date: '%Y' }}<br>All rights reserved.</section>
</div>
</footer>
</div>
</div>
{%if site.disqus %}
<div id="disqus_thread"></div>
<script type="text/javascript">
/* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
var disqus_shortname = '{{site.disqus}}'; // required: replace example with your forum shortname
/* * * DON'T EDIT BELOW THIS LINE * * */
(function() {
var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';
(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
})();
</script>
<noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
{% endif %}
</article>
</main>
<div class="bottom-closer">
<div class="background-closer-image" {%if site.cover %} style="background-image: url({{ site.cover }})"{% endif %}>
Image
</div>
<div class="inner">
<h1 class="blog-title">{{ site.title }}</h1>
<h2 class="blog-description">{{ site.description }}</h2>
<a href="/" class="btn">Back to Overview</a>
</div>
</div>
{% include javascripts.html %}
</body>
</html>
有什么主意吗?
推荐答案
失败是因为
值'nil'已传递到与日期相关的过滤器
The value 'nil' was passed to a date-related filter
这意味着在您的帖子布局中，您可能正在使用layout: post处理非帖子内容，例如，一个页面的前题中不包含date值(在---之间的内容顶部).
That means that in your posts layout, you are probably processing non-post content with layout: post, for example, a page that does not contain date value in their front-matter (the content between --- at the top).
然后，像<time datetime="{{ page.date | date_to_xmlschema }}">{{ page.date | date_to_string }}</time>这样的代码将失败，因为您将''传递给date_to_string过滤器.
Then code like <time datetime="{{ page.date | date_to_xmlschema }}">{{ page.date | date_to_string }}</time> will fail because you are passing '' to date_to_string filter.
您有两个选择:
- 标识具有错误的
layout: post属性的页面并将其更改为layout: page -
使您的代码更安全，以便在将日期值发送到过滤器之前检查日期是否为非NIL，例如，使用上面的
time标记，首先检查date包含日期:
- identify the pages with the wrong
layout: postattribute and change them tolayout: page make your code safer checking if date is non NIL before sending its value to a filter, for example, with the above
timetag, check thedatecontains a date first:
{% if page.date %}
<time datetime="{{ page.date | date_to_xmlschema }}">{{ page.date | date_to_string }}</time>
{% endif %}
此外，当jekyll在本地生成网站时，它会显示很多警告，例如:
Also, when jekyll generates the website locally, it shows a lot of warnings like:
Liquid Warning: Liquid syntax error (line 76): Unexpected character / in "{{/post}}" in /_layouts/post.html
Liquid Warning: Liquid syntax error (line 79): Unexpected character / in "{{!! After all the posts, we have the previous/next pagination links }}" in index.html
您应该删除斜线{{/posts}}到{{posts}}以及液体标记内的其他符号，例如@和#.
You should remove those slashes {{/posts}} to {{posts}}, and other symbols like @ and # inside liquid tags.
这篇关于在Github Pages上构建时无效的日期的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
