master-zapier-plan-draft/vendor/zapier-platform/example-apps/dynamic-dropdown/README.md
George Lambert b4150c8250 Milestone 0: import zappier billing, Verae middleware, and Zapier research
Compose-ready workspace: packages/zappier (rate card, portal, Stripe),
packages/verae-zapier-middleware (timestamp + NATS), packages/verae-zapier
(CLI app), vendor/zapier-platform, and research/zapier vendor corpus.

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2026-09-09 02:37:36 -04:00

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# dynamic-dropdown
This Zapier integration project is generated by the `zapier-platform init` CLI command.
These are what you normally do next:
```bash
# Install dependencies
npm install # or you can use pnpm or yarn
# Run tests
zapier-platform test
# Register the integration on Zapier if you haven't
zapier-platform register "App Title"
# Or you can link to an existing integration on Zapier
zapier-platform link
# Push it to Zapier
zapier-platform push
```
Then, to add more features, you can use the `zapier-platform scaffold` command, for example:
```bash
# Add a trigger
zapier-platform scaffold trigger contact
# Add an action
zapier-platform scaffold create contact
```
Find out more on the latest docs: https://docs.zapier.com/platform
# dynamic-dropdown
This example integration demonstrates how to create **dynamic dropdowns** (also known as dynamic choices) in Zapier integrations.
## Dynamic Dropdown Patterns
There are two ways to implement dynamic dropdowns:
### 1. Trigger-based (Legacy Pattern)
Uses a separate trigger to fetch choices. Reference it with the `dynamic` property:
```javascript
{
key: 'species_id',
type: 'integer',
label: 'Species',
dynamic: 'species.id.name', // Format: "triggerKey.idField.labelField"
}
```
The trigger (`species`) fetches data, and Zapier uses `id` for the value and `name` for the display label.
### 2. Perform-based (New Pattern)
Uses a function to fetch choices directly. Define it with `choices.perform`:
```javascript
{
key: 'planet_id',
type: 'integer',
label: 'Home Planet',
resource: 'planet', // Explicit resource linking (see below)
choices: {
perform: getPlanetChoices,
},
}
```
#### Resource Linking
The `resource` property explicitly links an input field to a resource. This is particularly important for perform-based dropdowns since they don't have a `dynamic` property to derive the resource from.
```javascript
{
key: 'spreadsheet_id',
resource: 'spreadsheet',
choices: { perform: getSpreadsheets },
}
```
The perform function must return:
```javascript
{
results: [
{ id: '1', label: 'Tatooine' },
{ id: '2', label: 'Alderaan' },
],
paging_token: 'https://api.example.com/planets?page=2', // or null if no more pages
}
```
#### Pagination Support
The perform function receives `bundle.meta.paging_token` for subsequent page requests:
```javascript
const getPlanetChoices = async (z, bundle) => {
// First request: paging_token is undefined
// Subsequent requests: paging_token is the value you returned previously
const url = bundle.meta.paging_token || 'https://api.example.com/planets';
const response = await z.request({ url });
return {
results: response.data.results.map((item) => ({
id: item.id,
label: item.name,
})),
// Return null when there are no more pages
paging_token: response.data.next,
};
};
```
## This Example
This integration uses the [Star Wars API](https://swapi.dev/) to demonstrate:
- **Species dropdown** - Trigger-based pattern using the `species` trigger
- **Planet dropdown** - Perform-based pattern with pagination and explicit `resource` linking
## Getting Started
```bash
# Install dependencies
npm install
# Run tests
zapier-platform test
# Push to Zapier
zapier-platform push
```
Find out more on the latest docs: https://docs.zapier.com/platform