add support for nested fields filtering, fiix bug with null/'' dates (#…

…47)
hasura · May 25, 2021 · 2ff0c86 · 2ff0c86
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diff --git a/README.md b/README.md
@@ -2,16 +2,22 @@
 
 A GraphQL data provider for [react-admin](https://marmelab.com/react-admin) tailored to target [Hasura](https://hasura.io/) GraphQL endpoints.
 
-- [Installation](#installation)
-- [Usage](#installation)
-- [How It Works](#how-it-works)
-- [Options](#options)
-  - [Apollo Client](#customize-the-apollo-client)
-  - [Authentication](#adding-authentication-headers)
-  - [Introspection](#customize-the-introspection)
-- [Customizing queries](#customizing-queries)
-  - [Extending queries to related entities](#example-extending-a-query-to-include-related-entities)
-  - [Fully custom queries](#example-write-a-completely-custom-query)
+- [ra-data-hasura](#ra-data-hasura)
+  - [Benefits and Motivation](#benefits-and-motivation)
+  - [Installation](#installation)
+  - [Usage](#usage)
+  - [How It Works](#how-it-works)
+  - [Options](#options)
+    - [Customize the Apollo client](#customize-the-apollo-client)
+    - [Adding Authentication Headers](#adding-authentication-headers)
+    - [Customize the introspection](#customize-the-introspection)
+  - [Customizing queries](#customizing-queries)
+    - [Example: extending a query to include related entities](#example-extending-a-query-to-include-related-entities)
+    - [Example: write a completely custom query](#example-write-a-completely-custom-query)
+  - [Special Filter Feature](#special-filter-feature)
+    - [Nested filtering](#nested-filtering)
+  - [Contributing](#contributing)
+  - [Credits](#credits)
 
 Example applications demonstrating usage:
 
@@ -442,6 +448,56 @@ The adapter assigns default comparator depends on the data type if it is not pro
 For string data types, it assumes as text search and uses `ilike` otherwise it uses `eq`.
 For string data types that uses `like` or `ilike` it automatically transform the filter `value` as `%value%`.
 
+### Nested filtering
+
+Nested filtering is supported using # as a field separator.
+
+```tsx
+<TextInput
+  label="Search by indication, drug, sponsor, nctid"
+  source="indication#name@_ilike,drug#preferred_name@_ilike,sponsor#name@_ilike,trial#nctid@_ilike"
+  alwaysOn
+/>
+```
+
+Will produce the following payload:
+
+```json
+{
+  "where": {
+    "_and": [],
+    "_or": [
+      {
+        "indication": {
+          "name": {
+            "_ilike": "%TEXT%"
+          }
+        }
+      },
+      {
+        "drug": {
+          "name": {
+            "_ilike": "%TEXT%"
+          }
+        }
+      },
+      {
+        "sponsor": {
+          "name": {
+            "_ilike": "%TEXT%"
+          }
+        }
+      }
+    ]
+  },
+  "limit": 10,
+  "offset": 0,
+  "order_by": {
+    "id": "asc"
+  }
+}
+```
+
 ## Contributing
 
 To modify, extend and test this package locally,