How to inject mobx store into a stateless component

Question

I am using mobx and react in a web application and I want to find a way to pass mobx store state to a stateless component. Below is my current component source code:

import React from 'react';
import Panel from './Panel';
import {inject, observer} from 'mobx-react';

@inject(allStores => ({
  form: allStores.store.form,
}))
@observer
export default class Creator extends React.Component {

  connect() {
    console.log(this.props.form);
  };

  render() {
    return (
      <Panel form={this.props.form} connect={this.connect.bind(this)}/>
    );
  }
};

How can I change it to be stateless? I tried below code but didn't work:

const Creator = ({form}) => {

  const connect = ()=>{
    console.log('xxxx,', form);
  }

  return (
    <Panel form={form} connect={connect}/>
  );
}

export default observer(Creator);

when I run above code, I got undefined value for form on the connect method. How can I inject the store into stateless component? I tried to use @inject on top of stateless component, but got a syntax error.

Solution 1

inject returns a function that you can use on a observer functional component:

var Example = inject("myStore")(observer((props) => {
  // ...
}));

Solution 2

A variant of @Tholle answer :

const Example = inject("myStore")(observer(({myStore, otherProp}) => {
  // ...
}));

Comments

[Jason G]

says it's not a function when you try to use it

[PatS]

Is "myStore" actually an instance the store you want to inject? I'm guessing it is. And where does inject come from? Is it mobx or mobx-react-lite? When I search for it I get a page mobx-react.js.org/recipes-inject that says this site is DEPRECATED. What version of MobX does this answer apply to?

[Tholle]

@PatS You can inject any value, but most likely you will be injecting an instance of a store, yes. It's part of the mobx-react package. The documentation says "usually there is no need anymore to use Provider / inject in new code bases; most of its features are now covered by React.createContext."