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Improve tag handling and redirect behaviour #47

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steadyfall wants to merge 2 commits into from
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Improve tag handling and redirect behaviour #47

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31e7774
fix(blog): redirect to main blog page when tag is missing or empty
steadyfall Oct 2, 2025
861dbb3
fix(blog): redirect to main page when tag has no posts
steadyfall Oct 2, 2025
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31 changes: 27 additions & 4 deletions components/blog.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ import { useRouter } from 'next/router';
import { MdxFile } from "nextra";
import { Link } from "nextra-theme-docs";
import { getPagesUnderRoute } from "nextra/context";
import { useState } from "react";
import { useState, useEffect } from "react";
import { useForm } from "react-hook-form";
import { z } from "zod";
import Picture from "./picture";
Expand All @@ -47,21 +47,44 @@ export function BlogHeader() {
export function BlogIndex() {
const router = useRouter();
const locale = router.locale || websiteConfig.default_locale;
const activeTag = router.query.tag as string | undefined;
const activeTag = (router.query.tag as string | undefined)?.trim();
let tagCounts: Record<string, number> = {};

// Get all posts from route
const allPosts = getPagesUnderRoute("/blog").filter((page) => {
const frontMatter = (page as MdxFile).frontMatter || {};
// Get tag counts for the tag bar
if(frontMatter.tags && Array.isArray(frontMatter.tags)) {
if (frontMatter.tags && Array.isArray(frontMatter.tags)) {
frontMatter.tags.forEach((tag: string) => {
tagCounts[tag] = (tagCounts[tag] || 0) + 1;
});
}
if(frontMatter.hidden){return null}
if (frontMatter.hidden) {return null}
return frontMatter;
});

// Redirect to main blog page if no tag specified or empty tag
// (but only after router is ready and we've attempted to parse the tag)
useEffect(() => {
if (router.isReady && !activeTag &&
(
!router.query.tag ||
(typeof router.query.tag === 'string' && router.query.tag.trim() === '') ||
!router.asPath.includes('?tag=') ||
router.asPath.includes('?tag=&') ||
router.asPath.endsWith('?tag=')
)
) {
router.push('/blog')
} // eslint-disable-next-line react-hooks/exhaustive-deps
}, [router.isReady, activeTag, router.query.tag, router.asPath])

// Redirect if tag has no posts
useEffect(() => {
if (router.isReady && activeTag && (!tagCounts[activeTag] || tagCounts[activeTag] === 0)) {
router.push('/blog')
} // eslint-disable-next-line react-hooks/exhaustive-deps
}, [router.isReady, activeTag])

// Filter blogs by tag
const filteredPosts = allPosts.filter((page) => {
Expand Down