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Update a dropdown from another field

Change available Admin UI options immediately when an editor changes a related field.

This generated recipe is review-ready source material. Use it from the runtime where it appears in the sidebar and search results.

Change available Admin UI options immediately when an editor changes a related field.

Use this when

  • make one dropdown depend on another
  • show states based on the selected country
  • create a cascading dropdown
  • update select options while editing

Dyrected concepts

admin.hooks.options, select, siblingData

Additional packages: No additional packages.

Decisions and cautions

Use this recipe only when its runtime matches the project you are documenting or building. Cloud recipes must stay inside the managed content backend boundary. Self-hosted recipes may use the server runtime, database, hooks, and infrastructure you control.

Complete recipe

This is the canonical source compiled and behavior-tested by @dyrected/knowledge.

import { defineCollection, defineSelectField } from "@dyrected/core";

export const Locations = defineCollection({
  slug: "locations",
  fields: [
    defineSelectField({
      name: "country",
      label: "Country",
      required: true,
      options: [
        { label: "Nigeria", value: "ng" },
        { label: "United States", value: "us" },
      ],
    }),
    defineSelectField({
      name: "region",
      label: "State or region",
      required: true,
      options: [],
      admin: {
        hooks: {
          options: ({ siblingData }) => {
            if (siblingData.country === "ng") return ["Lagos", "Abuja", "Oyo"];
            if (siblingData.country === "us")
              return ["California", "New York", "Texas"];
            return [];
          },
        },
      },
    }),
  ],
});

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