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我正在開發食譜書應用程序並試圖實現編輯輸入功能。 它的工作原理是輸入配方名稱（例如Pasta），然後是配料（例如雞蛋，麪粉，鹽）。成分必須以逗號輸入，並以列表形式顯示。將數據傳遞給父母 - 食譜React
- 麪食
- -Egg
- -Flour
我可以看到，它是有點工作，因爲我可以看到在輸入文本中的新條目（例如，最初是雞蛋，麪粉，鹽 - >蛋，麪粉，鹽，水），當我試圖再次編輯它。
但是，額外的成分（在上面的例子中：水）沒有出現在列表中。我必須設法重新呈現列表嗎？
更新： 我想我知道錯誤可能在哪裏。傳遞數據和設置狀態有一些問題。
<EditRecipe recipe={this.props.recipe} editRecipe={this.editRecipe.bind(this, this.props.recipe.id, recipe)}/>
App.js
import React, { Component } from 'react';
// import logo from './logo.svg';
import './App.css';
import uuid from 'uuid';
import Modal from 'react-modal';
import RecipeList from './components/RecipeList/RecipeList';
import AddRecipe from './components/AddRecipe/AddRecipe';
class App extends Component {
constructor(props){
super(props);
this.state = {
recipes:[]
};
}
getRecipes(){
this.setState({recipes:[
{
id: uuid.v4(),
food: "pumpkin pie",
ingredients: ["pumpkin puree", "sweetened condensed milk", "eggs", "pumpkin pie spice", "pie crust"]
},
{
id: uuid.v4(),
food: "spaghetti",
ingredients: ["noodles", "tomato sauce", "meatballs"]
},
{
id: uuid.v4(),
food: "onion pie",
ingredients: ["onion", "pie crust"]
},
]});
}
componentWillMount(){
this.getRecipes();
}
handleAddRecipe(recipe){
let recipes = this.state.recipes;
recipes.push(recipe);
this.setState({recipes: recipes});
}
handleDeleteRecipe(id){
let recipes = this.state.recipes;
let index = recipes.findIndex(x => x.id === id);
recipes.splice(index,1);
this.setState({recipes: recipes});
}
handleEditRecipe(id, recipe){
let recipes = this.state.recipes;
let index = recipes.findIndex(x => x.id === id);
recipes.splice(index,1,recipe);
this.setState({recipes: recipes});
}
render() {
return (
<div className="App">
<RecipeList recipes={this.state.recipes} onDelete={this.handleDeleteRecipe.bind(this)} onEdit={this.handleEditRecipe.bind(this)}/>
<AddRecipe addRecipe={this.handleAddRecipe.bind(this)}/>
</div>
);
}
}
export default App;
RecipeList.js
import React, { Component } from 'react';
import Collapsible from 'react-collapsible';
import RecipeItem from '../RecipeItem/RecipeItem'
import './RecipeList.css';
class RecipeList extends Component{
deleteRecipe(id){
this.props.onDelete(id);
}
editRecipe(id, recipe){
this.props.onEdit(id, recipe);
}
render(){
let recipeItem;
if(this.props.recipes){
recipeItem=this.props.recipes.map(recipe => {
return(
<RecipeItem onEdit={this.editRecipe.bind(this)} onDelete={this.deleteRecipe.bind(this)} key={recipe.id} recipe={recipe} />
)
});
}
return(
<div className="recipeList box">
{recipeItem}
</div>
)
}
}
export default RecipeList;
RecipeItem.js
import React, { Component } from 'react';
import Collapsible from 'react-collapsible';
import EditRecipe from '../EditRecipe/EditRecipe';
class RecipeItem extends Component{
deleteRecipe(id){
this.props.onDelete(id);
}
editRecipe(id, recipe){
this.props.onEdit(id, recipe);
}
render(){
let recipe=this.props.recipe
let foodName=recipe.food;
let ingredientItem;
if(recipe.ingredients){
ingredientItem=recipe.ingredients.map(ingredient=>{
return(
<a className="panel-block">
{ingredient}
</a>
)
})
}
return(
<ul>
<li className="Recipe">
<Collapsible trigger={foodName} transitionTime="200" easing="ease-in-out">
<nav className="panel">
<p className="panel-heading">
Ingredients
</p>
{ingredientItem}
<div className="panel-block">
<button className="button is-warning is-outlined" onClick={this.deleteRecipe.bind(this, this.props.recipe.id)}>
Delete
</button>
<EditRecipe recipe={this.props.recipe} editRecipe={this.editRecipe.bind(this, this.props.recipe.id, recipe)}/>
</div>
</nav>
</Collapsible>
</li>
</ul>
);
}
}
export default RecipeItem;
EditRecipe.js
import React, { Component } from 'react';
import RecipeForm from '../RecipeForm/RecipeForm';
// import './EditRecipe.css';
import Modal from 'react-modal';
import uuid from 'uuid';
// import Modal from 'boron/DropModal';
// import './RecipeList.css';
class RecipeEdit extends Component{
constructor(props){
super(props);
this.state = {
revisedRecipe:{
id: this.props.recipe.id,
food: this.props.recipe.food,
ingredients: this.props.recipe.ingredients
},
modalIsOpen: false,
speed: 100
};
this.openModal = this.openModal.bind(this);
this.closeModal = this.closeModal.bind(this);
}
openModal(){
this.setState({modalIsOpen: true});
}
closeModal(){
this.setState({modalIsOpen: false});
}
handleSubmit(e){
const revised = this.state.revisedRecipe;
this.props.editRecipe(revised);
e.preventDefault();
}
handleNameChange(e){
this.setState({revisedRecipe:{
food: e.target.value
}
});
}
handleIndChange(e){
this.setState({revisedRecipe:{
ingredients: e.target.value
}
});
}
render(){
const speed = this.state.speed;
let recipe=this.props.recipe;
let foodName=this.state.revisedRecipe.food;
let ingredients=recipe.ingredients;
return(
<div>
<button className="button is-primary" onClick={this.openModal}>Edit Recipe</button>
<Modal
isOpen={this.state.modalIsOpen}
onAfterOpen={this.afterOpenModal}
onRequestClose={this.closeModal}
closeTimeoutMS={speed}
contentLabel="Example Modal"
>
<div className="field">
<h2 className="title is-2">Edit Recipe</h2>
<form>
<label className="label">Recipe</label>
<div className="control">
<input className="input" type="text" placeholder="Recipe Name" ref="recipeName" value={this.state.revisedRecipe.food} onChange={this.handleNameChange.bind(this)}/>
</div>
<div className="field">
<label className="label">Ingredients</label>
<div className="control has-icons-left has-icons-right">
<input className="input" type="text" placeholder="Enter ingredients. (if more than 1 ingredient, separate them with commas)" ref="ingredients" value={this.state.revisedRecipe.ingredients} onChange={this.handleIndChange.bind(this)}/>
<span className="icon is-small is-left">
<i className="fa fa-flask"></i>
</span>
</div>
</div>
<div className="field is-grouped">
<div className="control">
<button className="button is-primary" onClick={this.closeModal}>Edit Recipe</button>
</div>
<div className="control">
<button className="button" onClick={this.closeModal}>Cancel</button>
</div>
</div>
</form>
</div>
</Modal>
</div>
);
}
}
export default RecipeEdit;
我試着改變handleIndChange。仍然不起作用。 –