php WordPress：如何仅显示特定类别的帖子？
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WordPress: How to display only posts that are in a certain category?
提问by Jannis
I'm pretty new to WordPress but have spent some 50 odd hours studying up on it, trying things out and such and have the feeling I got a pretty good handle on it now..
我对 WordPress 还很陌生，但已经花了大约 50 个小时来研究它，尝试各种方法，并且感觉我现在已经很好地掌握了它。
However the one thing I simply cannot get working is to have a page spit out a list of posts of a certain category.
然而，我根本无法工作的一件事是让一个页面吐出某个类别的帖子列表。
Here is my example: http://dev.jannisgundermann.com/zoeikin/graphic-design/typographic-posters
这是我的例子：http: //dev.jannisgundermann.com/zoeikin/graphic-design/typographic-posters
I have a post that if I go to it directly works correctly, but does not show up on this page.
我有一个帖子，如果我直接访问它可以正常工作，但不会显示在此页面上。
The category id is '3' while the category name is 'typographic-posters'.
类别 ID 为“3”，而类别名称为“印刷海报”。
I have a custom page template for the typographic-posters page that looks like this:
我有一个用于排版海报页面的自定义页面模板，如下所示：
<?php
/*
Template Name: Typographic Posters
*/
?>
<?php get_header(); ?>
<?php get_sidebar(); ?>
<?php if (in_category('3')): ?>
<div class="post">
<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
<div <?php post_class() ?> id="post-<?php the_ID(); ?>">
<div class="post-description">
<h2><?php the_title(); ?></h2>
<?php the_content(); ?>
</div>
<?=get_image('flutter-image');?>
</div>
<?php endwhile; else: ?>
<p><?php _e('Sorry, no posts matched your criteria.'); ?></p>
<?php endif; ?>
</div>
<?php endif; ?>
<?php get_footer(); ?>
Using this code however the page only shows gets the header, sidebar and nothing else..
使用此代码但是页面只显示获取标题、侧边栏和其他任何内容..
If someone could help me out that would really help me get a handle on this filtering of wordpress categories.
如果有人可以帮助我，那真的会帮助我处理这种 wordpress 类别的过滤。
Thanks for reading,
谢谢阅读，
Jannis
詹尼斯
回答by Karthik Viswanathan
in_categorywill only work outside of the loop on a single page. I suggest using the query_postsfunction to solve this problem. You may use query_posts('cat=3')or query_posts('category_name=typographic-posters')to get the posts you are looking for.
in_category只会在单个页面上的循环之外工作。我建议使用该query_posts函数来解决这个问题。您可以使用query_posts('cat=3')或query_posts('category_name=typographic-posters')来获取您正在寻找的帖子。
Once obtained, just use the normal WordPress loop to access these posts.
获得后，只需使用普通的 WordPress 循环即可访问这些帖子。
回答by Eimantas
The easiest way is to create a file called category-3.phpand use the standard code from normal index.phpor category.phpfile. Wordpress will take care of fetching posts only from category with id=3 and it's child categories.
最简单的方法是创建一个名为的文件，category-3.php并使用 normalindex.php或category.phpfile.js 中的标准代码。Wordpress 将只负责从 id=3 的类别及其子类别中获取帖子。
回答by Mike
in_category will only work outside of the loop on a single page. I suggest using the query_posts function to solve this problem. You may use query_posts('cat=3') or query_posts('category_name=typographic-posters') to get the posts you are looking for.
Once obtained, just use the normal WordPress loop to access these posts.
in_category 只能在单个页面上的循环之外工作。我建议使用 query_posts 函数来解决这个问题。您可以使用 query_posts('cat=3') 或 query_posts('category_name=typographic-posters') 来获取您要查找的帖子。
获得后，只需使用普通的 WordPress 循环即可访问这些帖子。
This worked excellent, but make sure that you go into Settings > Reading and set the posts page to the -- Select -- option or it will override this query and dump all recent posts there regardless of category.
这很有效，但请确保您进入“设置”>“阅读”并将帖子页面设置为 -- Select -- 选项，否则它将覆盖此查询并转储所有最近的帖子，而不管类别如何。
回答by FAISAL
I have filtered post by category Id using the method below:
我使用以下方法按类别 ID 过滤了帖子：
query_posts('cat=1&showposts=3');
if (have_posts()) : while (have_posts()) :
// if(1) {
//echo the_category_ID();
the_post();
/**
* The default post formatting from the post.php template file will be used.
* If you want to customize the post formatting for your homepage:
*
* - Create a new file: post-homepage.php
* - Copy/Paste the content of post.php to post-homepage.php
* - Edit and customize the post-homepage.php file for your needs.
*
* Learn more about the get_template_part() function: http://codex.wordpress.org/Function_Reference/get_template_part
*/
$is_post_wrap++;
if($is_post_wrap == '1') {
?><div class="post-wrap clearfix"><?php
}
get_template_part('post', 'homepage');
if($is_post_wrap == '3') {
$is_post_wrap = 0;
?></div><?php
}
endwhile;
else :
get_template_part('post', 'noresults');
endif;
回答by Tomer Lichtash
Simply add before the loop:
只需在循环前添加：
<?php query_posts="cat=3&showposts=5">
This will force the loop to display 5 posts (showposts=5) from category 3 (cat=3).
这将强制循环显示类别 3 (cat=3) 中的 5 个帖子 (showposts=5)。
回答by Michael
I would 2nd Eimantas' suggestion. The Template Hierarchywill use the category-3.php to display posts in that category. Usually you can just copy a theme's index.php or category.php to category-3.php and adjust that template for any customization you need. Plus the category template will better support pagination of posts.
我会第二个 Eimantas 的建议。该模板层次将使用该类别3.php以显示帖子在该类别中。通常，您只需将主题的 index.php 或 category.php 复制到 category-3.php 并根据您需要的任何自定义调整该模板。加上类别模板将更好地支持帖子的分页。
But if you need to stick with a Page to display those posts, also see the Page of Posts example.
但是，如果您需要坚持使用页面来显示这些帖子，请参阅帖子页面示例。
回答by Adam
http://codex.wordpress.org/Template_Tags/query_posts
http://codex.wordpress.org/Template_Tags/query_posts
Just so you know where these answers are coming from...there are a lot more interesting functions you can do with query_posts as well.
只是为了让您知道这些答案的来源……您还可以使用 query_posts 执行更多有趣的功能。
回答by Damien MATHIEU
This plugin could also help you if you want to be able to change the displayed categories without going through the code : http://wordpress.org/extend/plugins/advanced-category-excluder/
如果您希望无需通过代码即可更改显示的类别，此插件也可以为您提供帮助：http: //wordpress.org/extend/plugins/advanced-category-excluder/
回答by Abacus
thank you for sharing on your thought its a great thought. Usually you can just copy a theme's index.php or category.php to category-3.php and adjust that template for any customization you need
感谢您分享您的想法，这是一个很棒的想法。通常，您只需将主题的 index.php 或 category.php 复制到 category-3.php 并根据您需要的任何自定义调整该模板
