# How to configure array objects in a plugin? Using json\_schema with type: objects?
**URL:** https://meta.discourse.org/t/json-schema-type-objects/405376
**Category:** Development
**Created:** [June 16, 2026, 4:03am UTC](https://meta.discourse.org/t/json-schema-type-objects/405376 "2026-06-16T04:03:39Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@singi2016cn](https://meta.discourse.org/u/singi2016cn)
#### Post date: [June 16, 2026, 4:03am UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/1 "2026-06-16T04:03:39Z")
How do I configure array objects in a plugin? I tried using `json_schema`, but object property configuration doesn’t support selectors like `category`; only text input is possible. Meanwhile, `type: objects` simply doesn’t work in plugin configurations at all.
Configuration for `json_schema`:
```yaml
quectel_online_customer_category_customers:
default: "[]"
client: true
json_schema: QuectelOnlineCustomer::SiteSettings::CategoryCustomersJsonSchema
```
plugins/quectel-online-customer/lib/quectel\_online\_customer/site\_settings/category\_customers\_json\_schema.rb
```glimmer-javascript
# frozen_string_literal: true
module QuectelOnlineCustomer
module SiteSettings
class CategoryCustomersJsonSchema
def self.schema
@schema ||= begin
{
type: "array",
uniqueItems: true,
default: [],
items: {
type: "object",
title: "Category Customer Configuration",
additionalProperties: false, # Prevent submission of undefined fields
required: %w[category customers], # Both fields are required
properties: {
category: {
type: "category",
description: "The forum category to bind",
label: "Category"
},
customers: {
type: "usernames", # Multi-select users, replacing single username
description: "Customer accounts assigned to this category, supports multi-selection",
label: "Customer Users"
}
}
}
}
end
end
end
end
end
```
---
### Author:  [@awesomerobot](https://meta.discourse.org/u/awesomerobot)
#### Post date: [June 22, 2026, 10:10pm UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/2 "2026-06-22T22:10:26Z")
`type:objects` should work in plugins! we use it ourselves here for example
[https://github.com/discourse/discourse/blob/eba9a3b69cf637fccba1a00978f2269b4fccf9d4/plugins/discourse-openid-connect/config/settings.yml#L59-L71](https://github.com/discourse/discourse/blob/eba9a3b69cf637fccba1a00978f2269b4fccf9d4/plugins/discourse-openid-connect/config/settings.yml#L59-L71)
---
### Author:  [@singi2016cn](https://meta.discourse.org/u/singi2016cn)
#### Post date: [June 23, 2026, 1:25am UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/3 "2026-06-23T01:25:35Z")
Yes, that is indeed possible. However, `type:objects` does not support `type:category` either. My requirement is to select both categories and groups.
---
### Author:  [@awesomerobot](https://meta.discourse.org/u/awesomerobot)
#### Post date: [June 23, 2026, 1:16pm UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/4 "2026-06-23T13:16:15Z")
Oh I see, so the object settings are added directly to your `settings.yml` you’d want to format it like this:
```yml
oauth2_category_example:
type: objects
default: []
area: "oauth2"
schema:
name: category_rule
identifier: name
properties:
name:
type: string
required: true
label: Rule name
description: A label for this rule
category:
type: categories
required: true
label: Category
description: The category this rule applies to
validations:
max: 1
groups:
type: groups
label: Groups
description: Groups associated with this category
```
Which would produce a category dropdown like this
---
### Author:  [@singi2016cn](https://meta.discourse.org/u/singi2016cn)
#### Post date: [June 24, 2026, 2:40am UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/5 "2026-06-24T02:40:55Z")
Doesn’t `type:category` support single selection?
---
### Author:  [@singi2016cn](https://meta.discourse.org/u/singi2016cn)
#### Post date: [June 24, 2026, 2:48am UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/6 "2026-06-24T02:48:57Z")
According to this configuration
```yaml
quectel_online_customer_category_customer_group:
type: objects
default: []
schema:
name: "Category Customer Group"
identifier: name
properties:
name:
type: string
required: true
label: Name
description: Name
category:
type: categories
required: true
label: "Category"
description: "Category name. Please view it on the All Categories page"
group_name:
type: groups
required: true
label: "Customer Service Group Name"
description: "Customer service group name (English characters). Please view it on the Customer Service Groups page"
```
I encountered the following error:
```javascript
Error occurred:
- While rendering:
{{outlet}} for -top-level
-top-level
{{outlet}} for application
application
DiscourseRoot
{{outlet}} for admin
admin
{{outlet}} for admin.schema
schema
SchemaSettingNewEditor
SchemaSettingField
SchemaSettingTypeCategories
CategorySelector
section-link.gjs:149
Attempted to rerender, but the Ember application has had an unrecoverable error occur during render. You should reload the application after fixing the cause of the error.
categories.gjs:13
Uncaught (in promise) TypeError: this.args.value?.map is not a function
at SchemaSettingTypeCategories. (categories.gjs:13:9)
```
Is this related to my version?
Discourse v2026.1.4 — [Commits · discourse/discourse · GitHub](https://github.com/discourse/discourse/commits/f9f6863056) — Ember v6.6.0
---
### Author:  [@awesomerobot](https://meta.discourse.org/u/awesomerobot)
#### Post date: [June 24, 2026, 4:15pm UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/7 "2026-06-24T16:15:19Z")
do you have any stale configuration saved to the setting? could you try resetting it to the default with the reset button if it appears?
---
### Author:  [@singi2016cn](https://meta.discourse.org/u/singi2016cn)
#### Post date: [June 25, 2026, 2:10am UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/8 "2026-06-25T02:10:32Z")
I don’t see a reset button. The page looks exactly like the screenshot, and the items under the category aren’t rendering.
---
### Author:  [@awesomerobot](https://meta.discourse.org/u/awesomerobot)
#### Post date: [June 25, 2026, 7:24pm UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/9 "2026-06-25T19:24:07Z")
Hmmm I’m not sure what would be going wrong there… I’ve tested the categories option with the objects type so I know it works, and it shouldn’t be an issue with your version. I still wonder if something is stuck in a bad state somewhere, can you try a separate setting with a new name just to test it out? is this on github or anywhere so I can try it?
---
### Author:  [@singi2016cn](https://meta.discourse.org/u/singi2016cn)
#### Post date: [June 26, 2026, 1:41am UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/10 "2026-06-26T01:41:59Z")
`type:categories` is acceptable, but `type:category` is not.
However, the configuration below works well even when only a single selection is made, so `type:category` is no longer needed.
```plaintext
category:
type: categories
required: true
label: "Category"
description: "Category name"
validations:
max: 1
```
---
### Author:  [@system](https://meta.discourse.org/u/system)
#### Post date: [June 28, 2026, 1:42am UTC](https://meta.discourse.org/t/json-schema-type-objects/405376/11 "2026-06-28T01:42:22Z")
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