In this chapter, you'll learn how to create dynamic page layouts that change automatically when a staff user clicks on a check box on the Article Edit page.
The example we show here features an Article Type with a custom switch 'breaking_news'. This custom switch can be added to the Article Type in the Newscoop administration interface. The journalist or editor then sees a checkbox for 'breaking_news' in the Article Edit screen, which they will click whenever they consider the story they are working on to be particularly important.
The result of a staff user clicking this checkbox can be detected in the template. Inside list_articles a constraint is added, collecting only articles where the custom switch called 'breaking_news' is turned on. If there's an article that fulfills that criteria, then it's listed. If not, the layout remains the same:
{{ list_articles length="1" ignore_section="true" order="bypublishdate desc" constraints="breaking_news is on" }}
That tells $gimme to list one article with the following constraints:
The whole template looks like this:
{{ list_articles length="1" ignore_section="true" order="bypublishdate desc" constraints="breaking_news is on" }}
<div id="breakingNews">
<h3><a href="{{ url options="article" }}">{{ $gimme->article->name }}</a></h3>
{{ list_article_images length="1" }}
<div id="breakingNewsLeft">
<img src="{{ url options="image width 435" }}" alt="{{ $gimme->article->image->description }}" />
<p class="footnote">{{ $gimme->article->image->description }} {{ if $gimme->article->image->photographer }}(Photo: {{ $gimme->article->image->photographer }}){{ /if }}</p>
</div>
{{ /list_article_images }}
{{ if $gimme->prev_list_empty }}
<div id="breakingNewsLeft">
<img src="{{ url static_file="_img/{{ $gimme->language->code }}.jpg" }} alt="Breaking news" />
</div>
{{ /if }}
<div id="breakingNewsCenter">
{{ $gimme->article->publish_date|camp_date_format:"%M %e, %Y" }}
<p>{{ $gimme->article->deck }}</p>
</div>
</div>
{{ /list_articles }}
For more on using custom switches, see the chapter titled Topics, switches, keywords to structure content.
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