[RFR] Add Crud hooks

docs/Actions.md

@@ -11,11 +11,11 @@ React-admin provides special hooks to emit read and write queries to the `dataPr
 
 ## `useQuery` Hook
 
-Use the `useQuery` hook to emit a read query to the API when a component mounts. The parameters are the same as the ones expected by the [`dataProvider`](./DataProviders.md):
+Use the `useQuery` hook to emit a read query to the API when a component mounts. Call it with an object having the same fields as the parameters expected by the [`dataProvider`](./DataProviders.md):
 
 - `type`: The Query type, e.g `GET_LIST`
 - `resource`: The Resource name, e.g. "posts"
-- `params`: Query parameters. Depends on the query type.
+- `payload`: Query parameters. Depends on the query type.
 
 The return value of `useQuery` is an object, which updates according to the request state:
 
@@ -29,12 +29,12 @@ Here is an implementation of a user profile component using the `useQuery` hook:
 import { useQuery, GET_ONE } from 'react-admin';
 
 const UserProfile = ({ record }) => {
-    const { loading, error, data } = useQuery(
-        GET_ONE,
-        'users',
-        { id: record.id }
-    );
-    if (loading) { return <Loading />; }
+    const { loaded, error, data } = useQuery({
+        type: GET_ONE,
+        resource: 'users',
+        payload: { id: record.id }
+    });
+    if (!loaded) { return <Loading />; }
     if (error) { return <p>ERROR</p>; }
     return <div>User {data.username}</div>;
 };
@@ -50,14 +50,14 @@ Here is another example usage of `useQuery`, this time to display a list of user
 import { useQuery, GET_LIST } from 'react-admin';
 
 const UserList = () => {
-    const { loading, error, data, total } = useQuery(
-        GET_LIST,
-        'users',
-        {
+    const { loading, error, data, total } = useQuery({
+        type: GET_LIST,
+        resource: 'users',
+        payload: {
             pagination: { page: 1, perPage: 10 },
             sort: { field: 'username', order: 'ASC' },
         }
-    );
+    });
     if (loading) { return <Loading />; }
     if (error) { return <p>ERROR</p>; }
     return (
@@ -84,9 +84,32 @@ You can destructure the return value of the `useQuery` hook as `{ data, total, e
 
 **Tip**: Your `dataProvider` should return the `total` value for list queries only, to express the total number of results (which may be higher than the number of returned results if the response is paginated). 
 
+## `useQueryWithStore` Hook
+
+Internally, react-admin uses a more powerful version of `useQuery` called `useQueryWithStore`, which has an internal cache. In practice, `useQueryWithStore` persist the response from the dataProvider in the internal react-admin store, so that result remains available if the hook is called again in the future.  
+
+You can use this hook to avoid showing the loading indicator if the query was already fetched once. 
+
+```diff
+-import { useQuery, GET_ONE } from 'react-admin';
++import { useQueryWithStore, GET_ONE } from 'react-admin';
+
+const UserProfile = ({ record }) => {
+-   const { loaded, error, data } = useQuery({
++   const { loaded, error, data } = useQueryWithStore({
+        type: GET_ONE,
+        resource: 'users',
+        payload: { id: record.id }
+    });
+    if (!loaded) { return <Loading />; }
+    if (error) { return <p>ERROR</p>; }
+    return <div>User {data.username}</div>;
+};
+```
+
 ## `useMutation` Hook
 
-`useQuery` emits the request to the `dataProvider` as soon as the component mounts. To emit the request based on a user action, use the `useMutation` hook instead. This hook returns a callback that emits the request when executed, and an object containing the request state:
+`useQuery` emits the request to the `dataProvider` as soon as the component mounts. To emit the request based on a user action, use the `useMutation` hook instead. This hook takes the same arguments as `useQuery`, but returns a callback that emits the request when executed, and an object containing the request state:
 
 - mount: { loading: false, loaded: false }
 - mutate called: { loading: true, loaded: false }
@@ -100,11 +123,11 @@ Here is an implementation of an "Approve" button:
 import { useMutation, UPDATE } from 'react-admin';
 
 const ApproveButton = ({ record }) => {
-    const [approve, { loading }] = useMutation(
-        UPDATE,
-        'comments',
-        { id: record.id, data: { isApproved: true } }
-    );
+    const [approve, { loading }] = useMutation({
+        type: UPDATE,
+        resource: 'comments',
+        payload: { id: record.id, data: { isApproved: true } }
+    });
     return <FlatButton label="Approve" onClick={approve} disabled={loading} />;
 };
 ```
@@ -143,7 +166,7 @@ export const CommentList = (props) =>
 
 ## Handling Side Effects
 
-Fetching data is called a *side effect*, since it calls the outside world, and is asynchronous. Usual actions may have other side effects, like showing a notification, or redirecting the user to another page. Both `useQuery` and `useMutation` hooks accept a fourth parameter, which lets you describe the options of the query, including success and failure side effects. 
+Fetching data is called a *side effect*, since it calls the outside world, and is asynchronous. Usual actions may have other side effects, like showing a notification, or redirecting the user to another page. Both `useQuery` and `useMutation` hooks accept a second parameter in addition to the query, which lets you describe the options of the query, including success and failure side effects. 
 
 Here is how to add notifications and a redirection to the `ApproveButton` component using that fourth parameter:
 
@@ -153,17 +176,22 @@ import { useMutation, UPDATE } from 'react-admin';
 
 const ApproveButton = ({ record }) => {
     const [approve, { loading }] = useMutation(
-        UPDATE,
-        'comments',
-        { id: record.id, data: { isApproved: true } },
+        {
+            type: UPDATE,
+            resource: 'comments',
+            payload: { id: record.id, data: { isApproved: true } },
+        },
 +       {
 +           onSuccess: {
 +               notification: { body: 'Comment approved', level: 'info' },
 +               redirectTo: '/comments',
 +           },
-+           onError: {
-+               notification: { body: 'Error: comment not approved', level: 'warning' }
-+           }
++           onFailure: {
++               notification: {
++                   body: 'Error: comment not approved',
++                   level: 'warning',
++               },
++           },
 +       }
     );
     return <FlatButton label="Approve" onClick={approve} disabled={loading} />;
@@ -195,9 +223,11 @@ import { useMutation, UPDATE } from 'react-admin';
 
 const ApproveButton = ({ record }) => {
     const [approve, { loading }] = useMutation(
-        UPDATE,
-        'comments',
-        { id: record.id, data: { isApproved: true } },
+        {
+            type: UPDATE,
+            resource: 'comments',
+            payload: { id: record.id, data: { isApproved: true } },
+        },
         {
 +           undoable: true,
             onSuccess: {
@@ -269,7 +299,7 @@ const Dashboard = () => {
 }
 ```
 
-`useDataProvider` is more low-level than `useQuery` and `useMutation`, as it doesn't handle loading and error states (even though queries from `useDataProvider` trigger the global loading indicator). The `dataProvider` callback that it returns also accepts a fourth options parameter, just like the two other hoows.
+`useDataProvider` is more low-level than `useQuery` and `useMutation`, as it doesn't handle loading and error states (even though queries from `useDataProvider` trigger the global loading indicator). The `dataProvider` callback that it returns also accepts a fourth options parameter.
 
 ## Legacy Components: `<Query>`, `<Mutation>`, and `withDataProvider`
 

docs/DataProviders.md

@@ -24,7 +24,7 @@ The `dataProvider` parameter of the `<Admin>` component must be a function with
  * @param {Object} payload Request parameters. Depends on the action type
  * @returns {Promise} the Promise for a response
  */
-const dataProvider = (type, resource, params) => new Promise();
+const dataProvider = (type, resource, payload) => new Promise();
 ```
 
 You can find a Data Provider example implementation in [`packages/ra-data-simple-rest/src/index.js`](https://github.com/marmelab/react-admin/blob/master/packages/ra-data-simple-rest/src/index.js);

docs/_layouts/default.html

@@ -715,6 +715,9 @@
                             <li class="chapter">
                                 <a href="#usequery-hook"><code>useQuery</code></a>
                             </li>
+                            <li class="chapter">
+                                <a href="#usequerywithstore-hook"><code>useQueryWithStore</code></a>
+                            </li>
                             <li class="chapter">
                                 <a href="#usemutation-hook"><code>useMutation</code></a>
                             </li>

examples/demo/src/dashboard/NewCustomers.js

@@ -10,7 +10,7 @@ import CustomerIcon from '@material-ui/icons/PersonAdd';
 import Divider from '@material-ui/core/Divider';
 import { makeStyles } from '@material-ui/core/styles';
 import { Link } from 'react-router-dom';
-import { useTranslate, useQuery, GET_LIST } from 'react-admin';
+import { useTranslate, useQueryWithStore, GET_LIST } from 'react-admin';
 
 import CardIcon from './CardIcon';
 
@@ -40,16 +40,24 @@ const NewCustomers = () => {
     const aMonthAgo = useMemo(() => {
         const date = new Date();
         date.setDate(date.getDate() - 30);
+        date.setHours(0);
+        date.setMinutes(0);
+        date.setSeconds(0);
+        date.setMilliseconds(0);
         return date;
     }, []);
 
-    const { loaded, data: visitors } = useQuery(GET_LIST, 'customers', {
-        filter: {
-            has_ordered: true,
-            first_seen_gte: aMonthAgo.toISOString(),
+    const { loaded, data: visitors } = useQueryWithStore({
+        type: GET_LIST,
+        resource: 'customers',
+        payload: {
+            filter: {
+                has_ordered: true,
+                first_seen_gte: aMonthAgo.toISOString(),
+            },
+            sort: { field: 'first_seen', order: 'DESC' },
+            pagination: { page: 1, perPage: 100 },
         },
-        sort: { field: 'first_seen', order: 'DESC' },
-        pagination: { page: 1, perPage: 100 },
     });
 
     if (!loaded) return null;

examples/demo/src/reviews/AcceptButton.js

@@ -6,7 +6,7 @@ import Button from '@material-ui/core/Button';
 import ThumbUp from '@material-ui/icons/ThumbUp';
 import { useTranslate, useMutation } from 'react-admin';
 
-const sideEffects = {
+const options = {
     undoable: true,
     onSuccess: {
         notification: {
@@ -29,10 +29,12 @@ const sideEffects = {
 const AcceptButton = ({ record }) => {
     const translate = useTranslate();
     const [approve, { loading }] = useMutation(
-        'UPDATE',
-        'reviews',
-        { id: record.id, data: { status: 'accepted' } },
-        sideEffects
+        {
+            type: 'UPDATE',
+            resource: 'reviews',
+            payload: { id: record.id, data: { status: 'accepted' } },
+        },
+        options
     );
     return record && record.status === 'pending' ? (
         <Button

packages/ra-core/src/controller/EditController.tsx

@@ -1,14 +1,16 @@
 import { ReactNode, useEffect, useCallback } from 'react';
 // @ts-ignore
-import { useSelector, useDispatch } from 'react-redux';
+import { useDispatch } from 'react-redux';
 import { reset as resetForm } from 'redux-form';
 import inflection from 'inflection';
-import { crudGetOne, crudUpdate, startUndoable } from '../actions';
+import { crudUpdate, startUndoable } from '../actions';
 import { REDUX_FORM_NAME } from '../form';
 import { useCheckMinimumRequiredProps } from './checkMinimumRequiredProps';
-import { Translate, Record, Identifier, ReduxState } from '../types';
+import { Translate, Record, Identifier } from '../types';
 import { RedirectionSideEffect } from '../sideEffect';
+import useGetOne from './../fetch/useGetOne';
 import { useTranslate } from '../i18n';
+import useVersion from './useVersion';
 
 interface ChildrenFuncParams {
     isLoading: boolean;
@@ -80,33 +82,29 @@ interface Props {
  */
 const EditController = (props: Props) => {
     useCheckMinimumRequiredProps('Edit', ['basePath', 'resource'], props);
+    const { basePath, children, id, resource, undoable } = props;
+    if (!children) {
+        return null;
+    }
     const translate = useTranslate();
     const dispatch = useDispatch();
-
-    const { basePath, children, id, resource, undoable } = props;
-
-    const record = useSelector((state: ReduxState) =>
-        state.admin.resources[props.resource]
-            ? state.admin.resources[props.resource].data[props.id]
-            : null
-    );
-
-    const isLoading = useSelector(
-        (state: ReduxState) => state.admin.loading > 0
-    );
-
-    const version = useSelector(
-        (state: ReduxState) => state.admin.ui.viewVersion
-    );
+    const version = useVersion();
+    const { data: record, loading } = useGetOne(resource, id, {
+        basePath,
+        version, // used to force reload
+        onFailure: {
+            notification: {
+                body: 'ra.notification.item_doesnt_exist',
+                level: 'warning',
+            },
+            redirectTo: 'list',
+            refresh: true,
+        },
+    });
 
     useEffect(() => {
         dispatch(resetForm(REDUX_FORM_NAME));
-        dispatch(crudGetOne(resource, id, basePath));
-    }, [resource, id, basePath, version]);
-
-    if (!children) {
-        return null;
-    }
+    }, [resource, id, version]);
 
     const resourceName = translate(`resources.${resource}.name`, {
         smart_count: 1,
@@ -139,7 +137,7 @@ const EditController = (props: Props) => {
     );
 
     return children({
-        isLoading,
+        isLoading: loading,
         defaultTitle,
         save,
         resource,