美好的一天。我有事要问。
我有一个学生模型,在那个学生模型中,我有外键地址,我要问的是我想从单独的下拉列表中的外键地址创建一个下拉列表,除了zip_code如下图所示:>
Student(models.Model):
...
....
Address = models.Foreignkey(Address)
Address(models.Model):
zip_code = models.CharField(...)
city = model.Charfield(..)
province= model.Charfield(..)
country= model.Charfield(..)
答案 0 :(得分:0)
在views.py中,如下遍历学生对象:
import React, { Component } from 'react';
import styled from 'styled-components';
import H1 from "../common/headings";
import LeftArrow from "../assets/LeftArrow.png";
const MainWrapper = styled.View`
box-shadow: 5px 5px 5px #000000;
`;
const HeadingWrapper = styled.View`
padding: 60px 10px 0 10px;
height: 60px;
flex: 1;
flex-direction: row;
flex-wrap: wrap;
justify-content: space-between;
`;
const ScrollArea = styled.ScrollView`
`;
const Img = styled.Image`
`;
class LandingPage extends Component {
render() {
return (
<MainWrapper style={styles.mainWrapper}>
<HeadingWrapper>
<Img style={styles.leftArrow} source={LeftArrow}/>
<H1>Chats</H1>
</HeadingWrapper>
<ScrollArea>
</ScrollArea>
</MainWrapper>
);
}
}