我正在學(xué)習(xí) django rest 框架。我想在 JSON 中獲取作者全名而不是 id，下面是GET request，有沒有辦法？Articles從管理站點創(chuàng)建。我試圖在前端獲得價值article.author[ { "id": 1, "article_title": "Premier League", "description": "The Premier League is the top level of the English football league system. Contested by 20 clubs, it operates on a system of promotion and relegation with the English Football League. The Premier League is a corporation in which the member clubs act as shareholders.", "created_at": "2019-10-02T08:59:24.883450Z", "author": 1 }, { "id": 2, "article_title": "Cricket in England", "description": "Cricket is one of the most popular sports in England, and has been played since the 16th century. Marylebone Cricket Club, based at Lord's, developed the modern rules of play and conduct.", "created_at": "2019-10-02T08:59:57.075912Z", "author": 2 },]反應(yīng)組件的渲染功能。article.author_id給出空白并將article.author_id作者顯示id為integer. 我應(yīng)該返回什么來顯示作者全名？render() { return ( <Fragment> <h2>Articles</h2> <div > { this.props.articles.map(article => ( <div className="card" key={article.id}> <div className="card-body"> <div className="card-title"> <b>{article.article_title}</b></div> <div className="card-text"> {article.description}</div> <div> Author: {article.author_id}</div> <div className="card-footer text-muted"> Created date: {article.created_at}</div> </div> <br></br> </div> )) } </div> </Fragment> )}
2 回答
慕雪6442864
TA貢獻(xiàn)1812條經(jīng)驗 獲得超5個贊
您可以連接全名，將其注釋到查詢集上，然后將其添加到序列化程序中：
from django.db.models import F, Value
class ArticlesViewset(viewsets.ModelViewSet):
permission_classes = [permissions.AllowAny]
queryset = Articles.objects.all()
serializer_class = ArticleSerializer
def get_queryset(self):
return self.queryset.annotate(
authors_name=Concat('author__first_name', Value(" "), 'author__last_name')
)
class ArticleSerializer(serializers.ModelSerializer):
authors_name = serializers.CharField(required=False)
class Meta:
model = Articles
fields = ('article_title', 'description', 'created_at', 'authors_name')
慕姐4208626
TA貢獻(xiàn)1852條經(jīng)驗 獲得超7個贊
我在序列化程序類中進行了以下更改，并且能夠獲取作者姓名
#Article serializer
class ArticleSerializer(serializers.ModelSerializer):
author = serializers.CharField(required=False)
class Meta:
model = Articles
fields = ('article_title', 'description','created_at', 'author')
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