我创建表单，包含多个 TextField、DropDownMenu material-ui 组件，问题是如何从一个对象中的所有 TextFields、DropDownMenus 收集所有数据并将其发送到服务器。对于 TextField，它有 TextField.getValue() 返回输入的值。但我不明白如何使用它。
var React = require('react'),
mui = require('material-ui'),
Paper = mui.Paper,
Toolbar = mui.Toolbar,
ToolbarGroup = mui.ToolbarGroup,
DropDownMenu = mui.DropDownMenu,
TextField = mui.TextField,
FlatButton = mui.FlatButton,
Snackbar = mui.Snackbar;
var menuItemsIwant = [
{ payload: '1', text: '[Select a finacial purpose]' },
{ payload: '2', text: 'Every Night' },
{ payload: '3', text: 'Weeknights' },
{ payload: '4', text: 'Weekends' },
{ payload: '5', text: 'Weekly' }
];
var menuItemsIcan = [
{ payload: '1', text: '[Select an objective]' },
{ payload: '2', text: 'Every Night' },
{ payload: '3', text: 'Weeknights' },
{ payload: '4', text: 'Weekends' },
{ payload: '5', text: 'Weekly' }
];
var menuItemsHousing = [
{ payload: '1', text: '[Select housing]' },
{ payload: '2', text: 'Every Night' },
{ payload: '3', text: 'Weeknights' },
{ payload: '4', text: 'Weekends' },
{ payload: '5', text: 'Weekly' }
];
var menuItemsIlive = [
{ payload: '1', text: '[Select family mambers]' },
{ payload: '2', text: 'Every Night' },
{ payload: '3', text: 'Weeknights' },
{ payload: '4', text: 'Weekends' },
{ payload: '5', text: 'Weekly' }
];
var menuItemsLifestyle = [
{ payload: '1', text: '[Select lifestyle]' },
{ payload: '2', text: 'Every Night' },
{ payload: '3', text: 'Weeknights' },
{ payload: '4', text: 'Weekends' },
{ payload: '5', text: 'Weekly' }
];
var menuItemsLifestyle2 = [
{ payload: '1', text: '[Select savings]' },
{ payload: '2', text: 'Every Night' },
{ payload: '3', text: 'Weeknights' },
{ payload: '4', text: 'Weekends' },
{ payload: '5', text: 'Weekly' }
];
var menuItemsIncome = [
{ payload: '1', text: '[Select your yearly income]' },
{ payload: '2', text: 'Every Night' },
{ payload: '3', text: 'Weeknights' },
{ payload: '4', text: 'Weekends' },
{ payload: '5', text: 'Weekly' }
];
var Content = React.createClass({
getInitialState: function() {
return {
//formData: {
// name: '',
// age: '',
// city: '',
// state: ''
//},
errorTextName: '',
errorTextAge: '',
errorTextCity: '',
errorTextState: ''
};
},
render: function() {
return (
<div className="container-fluid">
<div className="row color-bg"></div>
<div className="row main-bg">
<div className="container">
<div className="mui-app-content-canvas page-with-nav">
<div className="page-with-nav-content">
<Paper zDepth={1}>
<h2 className="title-h2">Now, what would you like to do?</h2>
<Toolbar>
<ToolbarGroup key={1} float="right">
<span>I want to</span>
<DropDownMenu
className="dropdown-long"
menuItems={menuItemsIwant}
//autoWidth={false}
/>
</ToolbarGroup>
</Toolbar>
<div className="clearfix"></div>
<Toolbar>
<ToolbarGroup key={2} float="right">
<span>So I can</span>
<DropDownMenu
className="dropdown-long"
menuItems={menuItemsIcan}
//autoWidth={false}
/>
</ToolbarGroup>
</Toolbar>
<h2 className="title-h2">Please, share a little about you.</h2>
<div className="clearfix"></div>
<Toolbar>
<ToolbarGroup key={3} float="right">
<span>I am</span>
<TextField
id="name"
className="text-field-long"
ref="textfield"
hintText="Full name"
errorText={this.state.errorTextName}
onChange={this._handleErrorInputChange}
/>
<span>and I am</span>
<TextField
id="age"
className="text-field-short"
ref="textfield"
hintText="00"
errorText={this.state.errorTextAge}
onChange={this._handleErrorInputChange}
/>
<span className="span-right-measure">years of age.</span>
</ToolbarGroup>
</Toolbar>
<div className="clearfix"></div>
<Toolbar>
<ToolbarGroup key={4} float="right">
<span>I</span>
<DropDownMenu
hintText="I"
menuItems={menuItemsHousing}
//autoWidth={false}
/>
<span>in</span>
<TextField
id="city"
ref="textfield"
className="text-field-long"
hintText="City"
errorText={this.state.errorTextCity}
onChange={this._handleErrorInputChange}
/>
<span>,</span>
<TextField
id="state"
ref="textfield"
className="text-field-short text-field-right-measure"
hintText="ST"
errorText={this.state.errorTextState}
onChange={this._handleErrorInputChange}
/>
</ToolbarGroup>
</Toolbar>
<div className="clearfix"></div>
<Toolbar>
<ToolbarGroup key={5} float="right">
<span>Where I live</span>
<DropDownMenu
className="dropdown-long"
menuItems={menuItemsIlive}
//autoWidth={false}
/>
</ToolbarGroup>
</Toolbar>
<div className="clearfix"></div>
<Toolbar>
<ToolbarGroup key={6} float="right">
<span>My lifestyle is</span>
<DropDownMenu
className="dropdown-short"
menuItems={menuItemsLifestyle}
//autoWidth={false}
/>
<span>and I've saved</span>
<DropDownMenu
className="dropdown-short"
menuItems={menuItemsLifestyle2}
//autoWidth={false}
/>
</ToolbarGroup>
</Toolbar>
<div className="clearfix"></div>
<Toolbar>
<ToolbarGroup key={7} float="right">
<span>My yearly household is about</span>
<DropDownMenu
className="dropdown-mobile"
menuItems={menuItemsIncome}
//autoWidth={false}
/>
</ToolbarGroup>
</Toolbar>
<div className="clearfix"></div>
<div className="button-place">
<FlatButton
onTouchTap={this._handleClick}
label="I'm done lets go!"
/>
<Snackbar
ref="snackbar"
message="Invalid input, please check and try again"
/>
</div>
</Paper>
</div>
</div>
</div>
</div>
</div>
);
},
_handleErrorInputChange: function(e) {
if (e.target.id === 'name') {
var name = e.target.value;
this.setState({
//name: name,
errorTextName: e.target.value ? '' : 'Please, type your Name'
});
} else if (e.target.id === 'age') {
var age = e.target.value;
this.setState({
//age: age,
errorTextAge: e.target.value ? '' : 'Check Age'
});
} else if (e.target.id === 'city') {
var city = e.target.value;
this.setState({
//city: city,
errorTextCity: e.target.value ? '' : 'Type City'
});
} else if (e.target.id === 'state') {
var state = e.target.value;
this.setState({
//state: state,
errorTextState: e.target.value ? '' : 'Type State'
});
}
},
_handleClick: function(e) {
this.refs.snackbar.show();
//TODO: find a way to change errorText for all empty TextField
if (this.refs.textfield && this.refs.textfield.getValue().length === 0) {
this.setState({
errorTextState: 'Type State',
errorTextCity: 'Type City',
errorTextAge: 'Check Age',
errorTextName: 'Please, type your Name'
});
}
}
});
module.exports = Content;
我想用 _handleClick 方法将它发送到服务器。
最佳答案
为每个 TextField 和 DropDownMenu 元素添加一个 onChange 处理程序。调用时，将这些输入的新值保存在 Content 组件的 state 中。在渲染中，从 state 检索这些值并将它们作为 value 属性传递。参见 Controlled Components .
var Content = React.createClass({
getInitialState: function() {
return {
textFieldValue: ''
};
},
_handleTextFieldChange: function(e) {
this.setState({
textFieldValue: e.target.value
});
},
render: function() {
return (
<div>
<TextField value={this.state.textFieldValue} onChange={this._handleTextFieldChange} />
</div>
)
}
});
现在您在 _handleClick 方法中所要做的就是从 this.state 中检索所有输入的值并将它们发送到服务器。
您还可以使用 React.addons.LinkedStateMixin 来简化此过程。参见 Two-Way Binding Helpers .之前的代码变为:
var Content = React.createClass({
mixins: [React.addons.LinkedStateMixin],
getInitialState: function() {
return {
textFieldValue: ''
};
},
render: function() {
return (
<div>
<TextField valueLink={this.linkState('textFieldValue')} />
</div>
)
}
});
关于javascript - material-ui的TextField、DropDownMenu组件如何获取数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29791721/