小编Abd*_*auf的帖子

我试图在具有恒定标题的表中具有可扩展列表项。对于这个我使用Table并ExpansionPanel从成分反应的材料UI 1.0.0-beta.34。但是，桌子不是很好。所有的正文数据都放在一个标题下TableCell。这是我的代码。

表组件：

    import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { withStyles } from 'material-ui/styles';
import Table, { TableBody, TableCell, TableHead, TableRow } from 'material-ui/Table';
import Paper from 'material-ui/Paper';
import { styles } from './styles';
import ExpandableTableRow from 'client/components/expandable-table-row';

class GenericTable extends Component {
    render() {
        const { classes, items, headItems } = this.props;
        return (
            <Paper className={classes.paper}>
            <Table>
                <TableHead>
                    <TableRow>
                         {headItems.map((n, i) => {
                            return <TableCell className={classes.column} key={i}>{n}</TableCell> …

我正在学习如何在Play Framework中使用Ebean ORM,但却遇到了错误.我有很多课程,但问题出在这两个课程中.

StockItem类:

import com.avaje.ebean.Model;
import com.google.inject.Inject;

import javax.persistence.*;

@Entity
public class StockItem extends Model{
    @Id
    private Long id;

/*

    @ManyToOne
    private Warehouse warehouse;
*/

    @ManyToOne
    private Product product;

    private Long quantity;

    public static Finder<Long,StockItem> find = new Finder<>(StockItem.class);

    public StockItem(){
        //left blank
    }

    public String toString() {
        return String.format("%d %s",quantity,product);
    }

///gettters and setters

}

仓库类:

import com.avaje.ebean.Model;
import javax.persistence.Entity;

@Entity
public class Warehouse extends Model{

    private String name;
/*

    @OneToMany(mappedBy="warehouse")
    private List<StockItem> stock;  // = new ArrayList<>(); …