react-inject2

Dependency Injection for React

Usage no npm install needed!

<script type="module">
  import reactInject2 from 'https://cdn.skypack.dev/react-inject2';
</script>

README

react-inject2

Dependency Injection for React

The usage is very simple

Install

    npm install react-inject2 --save

Exmple:

  • index.js
    import React from 'react';
    import ReactDOM from 'react-dom';
    import App from './App';
    import {zProvider} from 'react-inject2';
    const mainService={
        name:'ztw',
        age:20,
        addAge:function(){
            this.age++;
        }
    }
    
    zProvider(
        {
            _myMain:mainService
        }
    )
    
    
    ReactDOM.render(
        <App/>,
        document.getElementById('root')
    )


  • Child.js
...
import {zInject} from 'react-inject2';

const child=props=>(
    <div>
        <p>{props._myMain.age}</p>
        <button onClick={()=>props._myMain.age++}>addAge</button>
        <button onClick={()=>props._myMain.addAge()}>AddAge</button>
    </div>
)
export default zInject(['_myMain'])(child);

  • App.js
...
import Child from './Child.js';
export default class extends React.Component{
    constructor(){
        super();
    }
    render(){
        return (
            <div>
                <Child/>
                <Child/>
                <Child/>
            </div>
        )
    }
}


** You don't have to use setState.**

react-reject2 will automatic detection of changes´╝îand call setState;

Multipe service:

Inject multiple service

Example:

  • provider.js
const 
mainService={
    name:1
},
httpService={
    result:null,
    get:function(url){fetch(...).then(r=>this.result=v)}
},
userService={
    userName:null,
    getUserName:function(){}
};

zProvider({
    _main:mainService,
    _http:httpService,
    _user:userService
})

import provider.js in index.js:

  • index.js
    ...
        import './provider.js'
    ...

OK..Now we can use it as follow.

  • App.js
...
import {zInject} from 'react-inject2';
const Child=zInject(['_main','_user'])(props=>{
    return (
        <div>
            {this.props._main.name}
            {this.props._user.userName}
            <button onClick={()=>this.props._main.name++}>add</button>
        </div>
    )
    
})

class app extends React.Component{
    constructor(){
        super();
    }
    render(){
        return (
            <div>
                <p>{this.props._main.name}</p>
                <p>{this.props._user.userName}</p>
                <p>
                {this.props._http.result}
                <button onClick={()=>this.props._http.get('myUrl')}>sendHttp</button>
                </p>
                <Child/>
            </div>
        )
    }
}

export default zInject(['_main','_http','_user'])(app)


Switch Inject:

    export default zInject(['_main'])(app);

Only _main be injected;

Alias Inject:

  • app.js
    ...
    
    class app ...{
        render(){
            return (
                <div>
                    {this.props.myMain.name}
                    {this.props.myUser.userName}
                </div>
            )
        }
    }
    ...
    
    export default zInject({
        myMain:'_main',
        myUser:'_user'
    })(app)