表单propType失败:您在没有`onChange`处理程序的情况下为表单字段提供了`value`属性 [英] Failed form propType: You provided a `value` prop to a form field without an `onChange` handler

问题描述

加载我的React应用程序时，我在控制台中收到此错误.

When I load my react app I get this error in the console.

警告:表单propType失败:您为表单提供了value道具 没有onChange处理程序的字段.这将呈现一个只读 场地.如果该字段应该是可变的，请使用defaultValue.否则， 设置onChange或readOnly.检查的渲染方法 AppFrame.

Warning: Failed form propType: You provided a value prop to a form field without an onChange handler. This will render a read-only field. If the field should be mutable use defaultValue. Otherwise, set either onChange or readOnly. Check the render method of AppFrame.

我的AppFrame组件如下:

My AppFrame component is below:

class AppFrame extends Component {
    render() {
        return (
            <div>
                <header className="navbar navbar-fixed-top navbar-shadow">
                    <div className="navbar-branding">
                        <a className="navbar-brand" href="dashboard">
                            <b>Shire</b>Soldiers
                        </a>
                    </div>
                    <form className="navbar-form navbar-left navbar-search alt" role="search">
                        <div className="form-group">
                            <input type="text" className="form-control" placeholder="Search..."
                                   value="Search..."/>
                        </div>
                    </form>
                    <ul className="nav navbar-nav navbar-right">
                        <li className="dropdown menu-merge">
                            <span className="caret caret-tp hidden-xs"></span>
                        </li>
                    </ul>
                </header>

                <aside id="sidebar_left" className="nano nano-light affix">

                    <div className="sidebar-left-content nano-content">

                        <ul className="nav sidebar-menu">
                            <li className="sidebar-label pt20">Menu</li>
                            <li className="sidebar-label">
                                <IndexLink to="/" activeClassName="active">Dashboard</IndexLink>
                            </li>
                            <li className="sidebar-label">
                                <Link to="/fixtures" activeClassName="active">Fixtures</Link>
                            </li>
                            <li className="sidebar-label">
                                <Link to="/players" activeClassName="active">Players</Link>
                            </li>
                        </ul>

                    </div>

                </aside>
                <section id="content_wrapper">
                    <section id="content" className="table-layout animated fadeIn">
                        {this.props.children}
                    </section>
                </section>
            </div>

        )
    }
}

export default AppFrame;

我正在努力找出我实际上在这里做错的事情.该应用程序启动并运行，但是我正在尝试删除所有控制台警告/错误.

I am struggling to work out what I am actually doing wrong here. The application starts up and works but I am trying to remove all console warning/errors.

推荐答案

您已经在搜索输入中直接输入了一个值，我看不到有什么好处，因为您已经有了一个占位符.您可以从以下位置删除该值:

You've put a value directly in your search input, I don't see the benefit there because you already have a placeholder. You could either remove the value from:

<input type="text" className="form-control" placeholder="Search..." value="Search..."/>

对此:

<input type="text" className="form-control" placeholder="Search..." />

或者，如果您认为必须拥有它，请将其设置为defaultValue:

Or if you think you must have it, set it as defaultValue:

<input type="text" className="form-control" placeholder="Search..." defaultValue="Search..."/>

文档: https://facebook.github.io/react/docs/uncontrol-components.html#default-values

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