// actions.js

function searchAction(search_string) {
    return {
        type: 'SEARCH_SMTH',
        payload: search_string
    }
}

// {your component}.js



// ....
import { bindActionCreators } from 'redux'
// ....
import * as MyActions from "../actions.js";
// ....

class YourComponent extends Component {
    constructor(props) {
        super(props);
        this.state = {
            value: ""
        }
    }

    handleChange(event) {
        this.setState({value: event.target.value});
    }

    onSearch() {
        this.props.myActions.searchAction(this.state.value)
    }


    render() {
        return (
            // тут форма
            <input type="text" value={this.state.value} onChange={this.handleChange} />
            <button onClick={this.onSearch}>Найти</button>
        );
    }
}

function mapDispatchToProps(dispatch) {
    return {
        myActions: bindActionCreators(MyActions, dispatch),
    }
}

function mapStateToProps( state ) {
    return {};
}

export default connect(mapStateToProps, mapDispatchToProps)(YourComponent);