ra-data-hasura: filter for count query, add httpClient (close #2100, #…

…2741, #2771) (#2727)

* filter for count in GET_LIST and GET_MANY_REFERENCE

* update deps, add httpClient argument, release new version

community/tools/ra-data-hasura/CHANGELOG.md

@@ -1,3 +1,9 @@
+## 0.0.7 (September 17, 2019)
+
+- Bug Fix: Re-build library to fix discrepancies. Pass `where` arguments to `count` query.
+- Feature: Add support for httpClient to pass in dynamic headers. Backwards compatibility maintained for static headers.
+- Update package dependencies.
+
 ## 0.0.6 (June 14, 2019)
 
 - Bug Fix: Fix sort order, fix primary key when response not an array and add filters to GET_* operations.

community/tools/ra-data-hasura/README.md

@@ -14,12 +14,12 @@ The `ra-data-hasura` provider accepts three arguments:
 
 - `serverEndpoint` - The URL at which Hasura GraphQL Engine is running. (for example: http://localhost:8080). This is required. It should also expose `/v1/query` endpoint.
 
-- `headers` - An optional argument. Pass your auth headers here.
+- `httpClient` - HTTP Client function. To maintain backwards compatibility the `headers` object is supported.
 
 - `config` - An optional argument. Pass your config here.
 
 ```
-hasuraDataProvider(serverEndpoint, headers, config)
+hasuraDataProvider(serverEndpoint, httpClient, config)
 ```
 
 In the following example, we import `hasuraDataProvider` from `ra-data-hasura` and give it the hasura server endpoint (assumed to be running at http://localhost:8080) and an optional headers object.
@@ -62,6 +62,22 @@ export default App;
 
 In case the server is configured with admin secret or auth, configure the appropriate headers and pass it to the provider.
 
+### Adding Custom Headers
+
+The above example showed a simple use case of adding static headers. In order to update headers dynamically, the data provider accepts an HTTP client function as the second argument. It uses react-admin's fetchUtils.fetchJson() as HTTP client. Hence to add custom headers to your requests, you just need to wrap the `fetchUtils.fetchJson()` call inside your own function: 
+
+```javascript
+const httpClient = (url, options = {}) => {
+  if (!options.headers) {
+      options.headers = new Headers({ Accept: 'application/json' });
+  }
+  // add your own headers here
+  options.headers.set('Authorization', 'Bearer xxxxx');
+  return fetchUtils.fetchJson(url, options);
+};
+const dataProvider = hasuraDataProvider('http://localhost:8080', httpClient);
+```
+
 ### Multiple schemas
 
 To query schemas other than `public`, you can pass schema to resource in the format