蓝图选择值字段

时间:2018-05-31 21:25:18

标签: reactjs blueprint blueprint-css

我正在使用BlueprintJs Select组件,它能够渲染。但是它不显示任何值文本,因为它应该显示。我不确定为什么没有显示。因为Select正在使用InputGroup,所以doc说要使用inputProps来设置value和onchange函数,但这似乎不起作用。我的代码如下

import React from 'react';
import { Select } from '@blueprintjs/labs';
import { MenuItem, Button } from '@blueprintjs/core';
import PropTypes from 'prop-types';

class BlueprintSelect extends React.Component {
  constructor(props) {
    super(props);
    const elementSelectItems = [
      { id: 1, query: 'term(s)' },
      { id: 2, query: 'range' },
    ];
    this.state = {
      elementSelectItems,
      selectedValue: elementSelectItems[0].query,
    };
  }

  handleElementSelect = ({ query }) => {
    console.log('printint our', query);
  }

  renderSelect = ({ handleElementSelect, item }) => (
    <MenuItem
      key={item.id}
      label={item.query}
      onClick={handleElementSelect}
      text={item.query}
      shouldDismissPopover
    />
  )

  render() {
    const elementSelectItems = [
      { id: 1, query: 'term(s)' },
      { id: 2, query: 'range' },
    ];
    return (
      <div className="elementSelector">
        <Select
          inputProps={{ value: this.state.selectedValue, onChange: this.handleElementSelect }}
          items={elementSelectItems}
          filterable={false}
          itemRenderer={this.renderSelect}
          onItemSelect={this.handleElementSelect}
          noResults={<MenuItem disabled text="No results." />}
        >
          <Button className="querySelectButton" text="query Type" rightIconName="caret-down" />
        </Select>
      </div>
    );
  }
}

为什么在我选择两个菜单项之一时无法显示该值,尤其是在使用Select组件的inputProps属性实现受控状态时?

1 个答案:

答案 0 :(得分:2)

在该示例中,他们在Section Component的嵌套子Button的text属性中设置值。有一个示例https://blueprintjs.com/docs/#select/select-component。 我会做类似的事情:

<Section> ... <Button text={this.state.selectedValue || elementSelectItems[0].value} /></Section>