小编Sha*_*ton的帖子

这是我的页面：

<p>Request as string: {{ request.POST }}</p>

哪个正确呈现：

作为字符串请求： <QueryDict: {'csrfmiddlewaretoken': ['HPOQ0pfVf5DU0Lkz05IXqbECipdPUOcTiNGYWd4giZC7LVL5Y6jdT0nb0AcmX9pd'], 'txtNumBins': ['3'] }>

我正在尝试访问列表 txtNumBins。但是当我在 Django 模板中尝试以下任何操作时：

<p>Total bins: {{  request.POST['txtNumBins'][0]  }} </p> 
<p>Total bins: {{  request.POST.get('txtNumBins')[0]  }} </p> 
<p>Total bins: {{  request.POST['txtNumBins']  }} </p> 
<p>Total bins: {{  request.POST.get('txtNumBins')  }} </p> 

我不断收到相同的错误：

TemplateSyntaxError at /analysis/
Could not parse the remainder: '['txtNumBins'][0]' from'request.POST['txtNumBins'][0]'

如何按名称访问字典元素 txtNumBins？

来自models.py

class Indicator(models.Model):
    name = models.CharField(max_length=50)
    youtube = models.CharField(max_length=LONG_BLOG_POST_CHAR_LEN)
    description = models.CharField(max_length=LONG_BLOG_POST_CHAR_LEN)    
    recommendation = models.CharField(max_length=LONG_BLOG_POST_CHAR_LEN)
    isPublic = models.BooleanField(default=False)
    methods_path = models.CharField(max_length=100,default=None)
    meta_description = models.CharField(max_length=150,default='')
    image_path = models.CharField(max_length=100,blank=True)

    def __str__(self):
        return self.name   

class IndicatorParameterInt(models.Model):
    name = models.CharField(max_length=50)
    value = models.IntegerField(default=1)
    indicator_int_parameter = models.ForeignKey(Indicator, on_delete=models.CASCADE)
    hidden = models.BooleanField(default=False)

class IndicatorParameterFloat(models.Model):
    name = models.CharField(max_length=50)
    setting = models.FloatField(default=1)
    indicator_float_parameter = models.ForeignKey(Indicator, on_delete=models.CASCADE)
    hidden = models.BooleanField(default=False)

class Comparison(models.Model):
    name = models.CharField(max_length=100)

来自admin.py

from django.contrib import admin
from .models import *

# Register your models here. …