如何在模板中创建并链接到类别部分？

Question

我是刚到django的，我试过一些建议，但似乎无法让它发挥作用。我正在尝试创建一个博客文章模型，其中包含一个类别部分，并链接到模板中的类别。我的代码如下。你知道吗

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
from django.core.urlresolvers import reverse
from taggit.managers import TaggableManager


# Create your models here.

class PublishedManager(models.Manager):
    def get_queryset(self):
        return super(PublishedManager, self).get_queryset().filter(status='published')


class MoneyManager(models.Manager):
    def get_queryset(self):
        return super(MoneyManager, self).get_queryset().filter(category='money')


class LoveManager(models.Manager):
    def get_queryset(self):
        return super(LoveManager, self).get_queryset().filter(category='love')


class WeightlossManager(models.Manager):
    def get_queryset(self):
        return super(WeightlossManager, self).get_queryset().filter(category='weightloss')


def get_image_filename(instance, filename):
    title = instance.post.title
    slug = slugify(title)
    return "post_images/%s-%s" % (slug, filename)


class Post(models.Model):
    STATUS_CHOICES = (
        ('draft', 'Draft'),
        ('published', 'Published'),
    )
    CATEGORY_CHOICES = (
        ('money', 'Money'),
        ('love', 'Love'),
        ('weightloss', 'Weightloss')
    )
    title = models.CharField(max_length=250)
    slug = models.SlugField(max_length=250,
                            unique_for_date='publish')
    author = models.ForeignKey(User, related_name='blog_posts')
    image = models.ImageField(upload_to='get_image_filename', verbose_name='Image', blank=True)
    body = models.TextField()
    image2 = models.ImageField(upload_to='get_image_filename', verbose_name='Image', blank=True)
    body2 = models.TextField(blank=True)
    image3 = models.ImageField(upload_to='get_image_filename', verbose_name='Image', blank=True)
    body3 = models.TextField(blank=True)
    publish = models.DateTimeField(default=timezone.now)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='draft')
    objects = models.Manager()
    published = PublishedManager()
    category = models.CharField(max_length=10, choices=CATEGORY_CHOICES)
    money = MoneyManager()
    love = LoveManager()
    weightloss = WeightlossManager()
    tags = TaggableManager()

    class Meta:
        ordering = ('-publish',)

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('blog:post_detail',
                       args=[self.publish.year,
                             self.publish.strftime('%m'),
                             self.publish.strftime('%d'),
                             self.slug])


class Comment(models.Model):
    post = models.ForeignKey(Post, related_name='comments')
    name = models.CharField(max_length=80)
    email = models.EmailField()
    body = models.TextField()
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    active = models.BooleanField(default=True)

    class Meta:
        ordering = ('created',)

    def __str__(self):
        return 'Comment by {} on {}'.format(self.name, self.post)
        4e2
        aaefb22cf2adc42680d
        ' -H '
        Content - Type: multipart / form - data
        ' -POST http://127.0.0.1:8000/api/scan_binary/   -F binary_file=@/Users/a.b.gopalakrishna/Desktop/tele.apk -F uuid=a996a142e1ef4a6e9e29dd7f6baf120bfsfds

我想在我的模板中有一个名为category的部分，它将显示3个类别（金钱、爱情和减肥）。你知道吗

我该怎么做？我该如何编写模板来显示它？谢谢！你知道吗

Answer 1

您可以使用_meta.get_field.("category").choices或get_category_display来执行此操作，也可以直接在dict上转换字段选择CATEGORY_CHOICES，如下所示：

  def convert_dict_choice(self):
            category_dict = dict(self.CATEGORY_CHOICES)
            return category_dict

因此，您可以调用view并将其作为模板的response上下文传递，如下所示：

  def select_options(request):
    category_select = Post().convert_dict_choice()
    return render(
        request, "template/name_template.html",        
        {"data_select":category_select}
    )

然后，你可以这样做模板：

{% extends "base.html" %}
{% block content %}
    <div class="category">
        <h1>Seccion category</h1>
        <select name="services" id="services">
            {% for category_selectvice in data_select %}
                    <option>{{category_selectvice}}</option>      
            {% endfor %}
        </select>
    </div>
{% endblock content %}

如果你想要更多的参考资料，请访问djangoDoc django的文档。你知道吗