React-Redux-从列表中删除一个项目

Question

目前我正在做这个FCC项目:https://www.freecodecamp.com/challenges/build-a-recipe-box

到目前为止，我已经能够在列表中添加新的食谱了。

然而，我很难实现如何编辑/删除每个配方项目列表。现在，我只想把重点放在如何删除每个项目上。

我显示配方列表的方式是在RecipeBox容器中，我使用map函数从应用程序的状态迭代地呈现它们中的每一个，以及呈现EDIT和DELETE按钮。

但是我似乎不能给它附加一个动作。我得到以下错误:

Uncaught TypeError: Cannot read property 'props' of undefined

RecipeBox容器:

import React, { Component } from 'react';
import { connect } from 'react-redux';
import { ListGroup, ListGroupItem, Panel, Button, Modals } from 'react-bootstrap'
import { bindActionCreators } from 'redux';
import { deleteRecipe } from '../actions/index';
class RecipeBox extends Component {
  constructor(props){
    super(props);
    this.state = {
      open: false
    };
  }
  renderRecipeList(recipeItem,index){
    const recipe = recipeItem.recipe;
    const ingredients = recipeItem.ingredients;
    return(
      <div key={index}>
        <Panel bsStyle="primary" collapsible header={<h3>{recipe}</h3>}>
          <ListGroup >
            <ListGroupItem  header="Ingredients"></ListGroupItem>
            {ingredients.map(function(ingredient,index){
              return <ListGroupItem key={index}>{ingredient}</ListGroupItem>;
            })}
            <ListGroupItem>
              <Button
                onClick={this.props.deleteRecipe(recipeItem)}
                bsStyle="danger">Delete
              </Button>
              <Button
                onClick={() => console.log('EDIT!')}
                bsStyle="info">Edit
              </Button>
            </ListGroupItem>
          </ListGroup>
        </Panel>
      </div>
    )
  }
  render(){
    return(
      <div className="container">
        <div className='panel-group'>
          {this.props.addRecipe.map(this.renderRecipeList)}
        </div>
      </div>
    )
  }
}
function mapStateToProps(state) {
  return {
    addRecipe : state.addRecipe
  };
}
function mapDispatchToProps(dispatch){
  return bindActionCreators({deleteRecipe}, dispatch)
}
export default connect(mapStateToProps,mapDispatchToProps)(RecipeBox);

这似乎很微不足道，但我一直遇到障碍…

Answer 1

在构造函数中添加this.renderRecipeList = this.renderRecipeList.bind(this)

Answer 2

 render(){
 return(
  <div className="container">
    <div className='panel-group'>
      {this.props.addRecipe.map(this.renderRecipeList.bind(this))}
    </div>
  </div>
 )
}