|
| 1 | +--- |
| 2 | +title: History Setup |
| 3 | +--- |
| 4 | + |
| 5 | +`@react-admin/ra-core-ee` contains hooks and components to help you track the changes made in your admin. See the history of revisions, compare differences between any two versions, and revert to a previous state if needed. |
| 6 | + |
| 7 | +## Installation |
| 8 | + |
| 9 | +The history features require a valid [Enterprise Edition](https://marmelab.com/ra-enterprise/) subscription. Once subscribed, follow the [instructions to get access to the private npm repository](https://react-admin-ee.marmelab.com/setup). |
| 10 | + |
| 11 | +You can then install the npm package providing the history features using your favorite package manager: |
| 12 | + |
| 13 | +```sh |
| 14 | +npm install --save @react-admin/ra-core-ee |
| 15 | +# or |
| 16 | +yarn add @react-admin/ra-core-ee |
| 17 | +``` |
| 18 | + |
| 19 | +## Data Provider Requirements |
| 20 | + |
| 21 | +`ra-core-ee` relies on the `dataProvider` to read, create and delete revisions. In order to use the history features, you must add 3 new methods to your data provider: `getRevisions`, `addRevision` and `deleteRevisions`. |
| 22 | + |
| 23 | +```tsx |
| 24 | +const dataProviderWithRevisions = { |
| 25 | + ...dataProvider, |
| 26 | + getRevisions: async (resource, params) => { |
| 27 | + const { recordId } = params; |
| 28 | + // ... |
| 29 | + return { data: revisions }; |
| 30 | + }, |
| 31 | + addRevision: async (resource, params) => { |
| 32 | + const { recordId, data, authorId, message, description } = params; |
| 33 | + // ... |
| 34 | + return { data: revision }; |
| 35 | + }, |
| 36 | + deleteRevisions: async resource => { |
| 37 | + const { recordId } = params; |
| 38 | + // ... |
| 39 | + return { data: deletedRevisionIds }; |
| 40 | + }, |
| 41 | +}; |
| 42 | +``` |
| 43 | + |
| 44 | +**Tip**: Revisions are immutable, so you don't need to implement an `updateRevision` method. |
| 45 | + |
| 46 | +A `revision` is an object with the following properties: |
| 47 | + |
| 48 | +```js |
| 49 | +{ |
| 50 | + id: 123, // the revision id |
| 51 | + resource: 'products', // the resource name |
| 52 | + recordId: 456, // the id of the record |
| 53 | + data: { |
| 54 | + id: 456, |
| 55 | + title: 'Lorem ipsum', |
| 56 | + teaser: 'Lorem ipsum dolor sit amet', |
| 57 | + body: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit', |
| 58 | + }, // the data of the record |
| 59 | + // metadata |
| 60 | + authorId: 789, // the id of the author |
| 61 | + date: '2021-10-01T00:00:00.000Z', // the date of the revision |
| 62 | + message: 'Updated title, teaser, body', // the commit message |
| 63 | + description: 'Added a teaser', // the commit description |
| 64 | +} |
| 65 | +``` |
| 66 | + |
| 67 | +You can read an example data provider implementation in the package source at `src/history/dataProvider/builder/addRevisionMethodsBasedOnSingleResource.ts`. |
| 68 | + |
| 69 | +Instead of implementing these new methods yourself, you can use one of the provided builders to generate them: |
| 70 | + |
| 71 | +- `addRevisionMethodsBasedOnSingleResource` stores the revisions for all resources in a single `revisions` resource: |
| 72 | + |
| 73 | +```tsx |
| 74 | +// in src/dataProvider.ts |
| 75 | +import { addRevisionMethodsBasedOnSingleResource } from '@react-admin/ra-core-ee'; |
| 76 | +import baseDataProvider from './baseDataProvider'; |
| 77 | + |
| 78 | +export const dataProvider = addRevisionMethodsBasedOnSingleResource( |
| 79 | + baseDataProvider, |
| 80 | + { resourceName: 'revisions' } |
| 81 | +); |
| 82 | +``` |
| 83 | + |
| 84 | +- `addRevisionMethodsBasedOnRelatedResource` stores the revisions of each resource in a related resource (e.g. store the revisions of `products` in `products_history`): |
| 85 | + |
| 86 | +```tsx |
| 87 | +// in src/dataProvider.ts |
| 88 | +import { addRevisionMethodsBasedOnRelatedResource } from '@react-admin/ra-core-ee'; |
| 89 | +import baseDataProvider from './baseDataProvider'; |
| 90 | + |
| 91 | +export const dataProvider = addRevisionMethodsBasedOnRelatedResource( |
| 92 | + baseDataProvider, |
| 93 | + { getRevisionResourceName: resource => `${resource}_history` } |
| 94 | +); |
| 95 | +``` |
| 96 | + |
| 97 | +Once your provider has the three revisions methods, pass it to the `<CoreAdmin>` component and you're ready to start using the history features of `ra-core-ee`. |
| 98 | + |
| 99 | +```tsx |
| 100 | +// in src/App.tsx |
| 101 | +import { CoreAdmin } from 'ra-core'; |
| 102 | +import { dataProvider } from './dataProvider'; |
| 103 | + |
| 104 | +const App = () => ( |
| 105 | + <CoreAdmin dataProvider={dataProvider}>{/* ... */}</CoreAdmin> |
| 106 | +); |
| 107 | +``` |
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