use collections on layout/include

[IAALAI]

I try to use collections on layout/include,but it's not work right.In layout/include {{collections.posts.length}} is 14,on post {{collections.posts.length}}.this problem seems obvious,how do you think is a good solution?

One of my thoughts is to write a separate js or json, export the correct values in post form, and then find a way to re-render them back. But I don't think it's a good solution

Please forgive me that my native language is not English, but there may be some problems with my expression.

I search this to discussions and google,but not see solutions

---
title: archive
layout: home.njk
---

<div class="title">
    <h1>archive</h1>
    <h3>
        <p>共有 {{collections.posts.length}} 篇文章</p>
    </h>
</div>

in post

---
layout: "base.njk"
---
<div id="body">
    <aside>
        <div id="base_info">
            <a href="/" style="display: flex;">
                <img class="favicon" src="/assets/image/small.avif" alt="logo">
            </a>
            <a href="/about">
                <h2 class="name" style="color: #7ee777;font-size: 2;">IAALAI</h2>
            </a>
            <h4 class="desc">我的 blog ,随便记录一点什么吧</h4>
            <ul>
                <li>
                    <a href="/archive">
                        <div>文章</div>
                        <div>{{ collections.posts.length }}</div>
                    </a>
                </li>
           </ul>
    </aside>
</div>

in layout

Same variable, but different value.

[dwkns]

Hey there.

It's not 100% clear how you are using your Layouts & Includes. Typically Includes do not have a layout accociated with them. Rather they are inserted into a template with {% include "include-name.njk" %}

That said, there shouldn't be a difference in the value of collections.posts.length regardless of where it is used. You can see an example of it working correctly in this minimal repo..

That would suggest there is someting else going on. How are you creating your collections?

Can you share a repo that replicates the problem you are having?

[IAALAI]

Thank you re

Yes,I met it in https://github.com/iaalai/blog

I try to create a minimal repo,need some time

[dwkns]

In index.njk you are using {% for item in collections.posts.splice(-5).reverse() %}

splice() modifies the original array which Eleventy expects to be static. You almost certainly don't want this.
slice() however creates a shallow copy and returns a new array without altering the original.

Swapping splice() for slice() should resolve your issue.