Issue: anticipated ']' after statement in sanity in conjunction with nextjs

Struggling to retrieve data from Sanity in Next.js, but encountering an error that reads: "Error: expected ']' following expression." As a beginner in this, I've been trying to troubleshoot it, but I'm unsure of the root cause of the error.

Below are my schemas for `product.ts`:

import {defineField, defineType} from 'sanity'

export default defineType({
  name: 'product',
  title: 'product',
  type: 'document',
  fields: [
    // Define fields here
  ],
  // Preview configuration
})

Schema for `category.ts`:

import {defineField, defineType} from 'sanity'

export default defineType({
  name: 'category',
  title: 'Category',
  type: 'document',
  fields: [
    // Define fields for category
  ],
})

Using `client` and `groq` for fetching:

// Code for fetching products

// Code for fetching categories

Here is my product page layout:

// Code for product page

Layout for `product/[category]/page.tsx`:

// Code for category page

Defined interfaces for items and categories:

// Interfaces for items and categories

Seeking assistance with the error encountered. Thank you.

After some restructuring and modifying the codes, the issue was resolved. Success!

Answer №1

Upon encountering a similar issue recently, I came to realize that the problem may be related to your query. Instead of using an assignment, the _type should be checked for equality. In your particular situation, the correct code should be:

*[_type == "product"] and *[_type == "category"]

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