当我通过视图运行查询集并将其传递给模板时,我得到的是以下内容:
import './style.css';
screenLog.init()
import { from } from 'rxjs/observable/from';
import { of } from 'rxjs/observable/of';
import { race } from 'rxjs/observable/race';
import { timer } from 'rxjs/observable/timer';
import { groupBy, mergeMap, toArray, map, reduce, concatMap, delay, concat, timeout, catchError, take } from 'rxjs/operators';
// simulate a element that appear at t0, then at t30s, then at t10s
const obs1$ = of('aa ');
const obs2$ = of('bb ').pipe(delay(3000));
const obs3$ = of('cc ').pipe(delay(10000));
const example2 = obs1$.pipe(concat(obs2$.pipe(concat(obs3$))), timeout(4000), catchError(a => of('timeout'))); // here in the catchError, execute your function
const subscribe = example2.subscribe(val => console.log(val + ' ' + new Date().toLocaleTimeString()));
如何通过查询显示字段字典?
views方法:
<QuerySet [<ChangeLog: ChangeLog object (1)>, <ChangeLog: ChangeLog object (2)>, <ChangeLog: ChangeLog object (3)>, <ChangeLog: ChangeLog object (4)>, <ChangeLog: ChangeLog object (5)>, <ChangeLog: ChangeLog object (6)>, <ChangeLog: ChangeLog object (7)>, <ChangeLog: ChangeLog object (8)>, <ChangeLog: ChangeLog object (9)>, <ChangeLog: ChangeLog object (10)>, <ChangeLog: ChangeLog object (11)>]
模板:
def changeres(request):
if request.user.is_authenticated:
name = request.session.get('name')
data = ChangeLog.objects.all()
return render(request, 'changeres.html', {'data': data})
{{data}}只是作为概念证明,直到我可以使其正常工作为止
答案 0 :(得分:1)
示例:
{% for item in data %}
<p>item.one_of_my_fields</p>
{% endfor %}
您还可以为您的类定义默认的字符串方法,因为您可以看到django默认返回ChangeLog object (1)
。
示例:
class Genre(models.Model):
name = models.CharField(max_length=30, unique=True)
def __str__(self):
return self.name
现在,我可以直接在模板中调用对象,它将返回流派的名称。
{% for item in data %}
<p>item</p>
{% endfor %}