Django 操作错误：迁移后没有此类列：blog\u post.user\u id

我已经完成了djangogirls教程，遇到了一个错误：没有这样的专栏：blog\u post.user\u id

这在我的本地服务器上非常有效，但在推到pythonywhere之后，我得到了操作错误

我使用的是Django 1.9、Python 3.4.3

我已经完成了python manage.py makemigrations，在Bash控制台上成功地进行了迁移，但是我仍然在站点上收到了错误消息。 然后我又尝试了一次，结果“没有检测到任何更改”和“没有要进行的迁移”

这是我的模特

from django.contrib.auth.models import User
from django.utils import timezone
from django.core.urlresolvers import reverse
from django.db import models
from django.db.models.signals import pre_save
from django.utils.text import slugify
from django.conf import settings

def upload_location(instance, filename):
    return "%s/%s" %(instance.id, filename)

class Post(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, default=1)
    title = models.CharField(max_length=200)
    slug = models.SlugField(unique=True)
    image = models.ImageField(upload_to=upload_location,
        null=True, 
        blank=True, 
        width_field="width_field", 
        height_field="height_field")
    height_field = models.IntegerField(default=0)
    width_field = models.IntegerField(default=0)
    text = models.TextField()
    created_date = models.DateTimeField(default=timezone.now)
    published_date = models.DateTimeField(blank=True, null=True)


def publish(self):
    self.published_date = timezone.now()
    self.save()

def __str__(self):
    return self.title

def get_absolute_url(self):
    return reversal("posts:detail", kwargs={"slug": self.slug})

def pre_save_post_receiver (sender, instance, *args, **kwargs):
    slug = slugify(instance.title)
    exists = Post.objects.filter(slug=slug).exists()
    if exists:
    slug = "%s-%s" %(slug, instance.id)
    instance.slug = slug

pre_save.connect(pre_save_post_receiver, sender=Post)

这是我的观点

from django.contrib import messages
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.http import HttpResponse, HttpResponseRedirect, Http404
from django.utils import timezone
from .models import Post
from django.shortcuts import render, get_object_or_404, redirect
from .forms import PostForm



# Create your views here.
def post_list(request):
    posts =    Post.objects.filter(published_date__lte=timezone.now()).order_by('-published_date')
    paginator = Paginator(posts, 5) # Show 25 contacts per page
    page = request.GET.get('page')
    try:
        posts = paginator.page(page)
    except PageNotAnInteger:
    # If page is not an integer, deliver first page.
        posts = paginator.page(1)
    except EmptyPage:
    # If page is out of range (e.g. 9999), deliver last page of results.
        posts = paginator.page(paginator.num_pages)
    return render(request, 'blog/post_list.html', {'posts':posts})


def post_detail(request, pk):
    post = get_object_or_404(Post, pk=pk)
    return render(request, 'blog/post_detail.html', {'post': post})

def post_new(request):
    if not request.user.is_staff or not request.user.is_superuser:
        raise Http404
    if request.method == "POST":
        form = PostForm(request.POST, request.FILES or None)
        if form.is_valid():
            post = form.save(commit=False)
            post.user = request.user
            post.published_date = timezone.now()
            post.save()
            messages.success(request, "Awesome! Your new post was successfully created!")
            return redirect('post_detail', pk=post.pk)
    else:
        form = PostForm()
    return render(request, 'blog/post_edit.html', {'form': form})


def post_edit(request, pk):
    if not request.user.is_staff or not request.user.is_superuser:
        raise Http404
    post = get_object_or_404(Post, pk=pk)
    if request.method == "POST":
        form = PostForm(request.POST, request.FILES or None, instance=post)
        if form.is_valid():
            post = form.save(commit=False)
            post.user = request.user
            post.published_date = timezone.now()
            post.save()
            messages.success(request, "Awesome! Your new post was successfully edited!")
            return redirect('post_detail', pk=post.pk)
    else:

        form = PostForm(instance=post)
    return render(request, 'blog/post_edit.html', {'form': form})

def post_delete(request, pk):
    if not request.user.is_staff or not request.user.is_superuser:
        raise Http404
    post = get_object_or_404(Post, pk=pk)
    post.delete()
    messages.success(request, "That post was successfully deleted!")
    return redirect("post_list")

当我打开网页时，会显示blog_post错误。页面被卡住的那一行是我的post_list.html中的{%forpost-in-posts%}

{% extends 'blog/base.html' %}
    {% block content %}

    <div class='col-sm-7 col-sm-offset-3'>
    <div class="row">
    {% for post in posts %}
  <div class="col-sm-12">
    <div class="thumbnail">
    {% if post.image %}
      <img src="{{post.image.url}}" class='img-responsive img-rounded'  alt="...">
     {% endif %}

<div class="caption">
    <h3><a href="{% url 'post_detail' pk=post.pk %}">{{ post.title }} <small>{{ post.published_date|timesince }} ago</small></a></h3>
        <p><b>Author: {{ post.user }}</b></p>
        <p>{{ post.text|linebreaks|truncatechars:300 }}</p>
    <hr/>
        <p><a href="{% url 'post_detail' pk=post.pk %}" class="btn btn-primary" role="button">View</a> </p>
      </div>
    </div>
  </div>
{% endfor %}
    </div>

    <div class="pagination">
        <span class="step-links">
            {% if posts.has_previous %}
                <a href="?page={{ posts.previous_page_number }}">previous</a>
            {% endif %}

            <span class="current">
                Page {{ posts.number }} of {{ posts.paginator.num_pages }}.
            </span>
            {% if posts.has_next %}
                <a href="?page={{ posts.next_page_number }}">next</a>
            {% endif %}
        </span>
    </div>

    </div>
{% endblock %}

这是我的post_list.html

{% extends 'blog/base.html' %}
    {% block content %}

    <div class='col-sm-7 col-sm-offset-3'>
    <div class="row">
    {% for post in posts %}
  <div class="col-sm-12">
    <div class="thumbnail">
    {% if post.image %}
      <img src="{{post.image.url}}" class='img-responsive img-rounded'  alt="...">
     {% endif %}

<div class="caption">
    <h3><a href="{% url 'post_detail' pk=post.pk %}">{{ post.title }} <small>{{ post.published_date|timesince }} ago</small></a></h3>
        <p><b>Author: {{ post.user }}</b></p>
        <p>{{ post.text|linebreaks|truncatechars:300 }}</p>
    <hr/>
        <p><a href="{% url 'post_detail' pk=post.pk %}" class="btn btn-primary" role="button">View</a> </p>
      </div>
    </div>
  </div>
{% endfor %}
    </div>

    <div class="pagination">
        <span class="step-links">
            {% if posts.has_previous %}
                <a href="?page={{ posts.previous_page_number }}">previous</a>
            {% endif %}

            <span class="current">
                Page {{ posts.number }} of {{ posts.paginator.num_pages }}.
            </span>
            {% if posts.has_next %}
                <a href="?page={{ posts.next_page_number }}">next</a>
            {% endif %}
        </span>
    </div>

    </div>
{% endblock %}

{%extends'blog/base.html%}
{%block content%}
{posts%%中的post为%s}
{%if post.image%}
{%endif%}
作者：{{post.user}

{{post.text |换行符| truncatechars:300}



{%endfor%}
{%if posts.has_previous%}
{%endif%}
第{{posts.paginator.num_pages}页中的第{{posts.number}页。
{%if posts.has_next%}
{%endif%}
{%endblock%}

我已经删除了我的数据库，并用新的超级用户创建了一个新的数据库。当我从github推到Pythonywhere并运行迁移后重新加载页面时，仍然会收到此错误消息。

---

请告诉我如何修复此问题？

您能否提供运行迁移时所遇到错误的完整堆栈跟踪？文件“/Home/aldigitron/my first blog/myvenv/lib/python3.4/site packages/django/db…”感谢您的回复。当我运行迁移时，我得到了类似于。。。。return Database.Cursor.execute（self，query，param）django.db.utils.integrityyerror:UNIQUE constraint失败：blog_post.slugHmm，此处的注释字段将其截断。也许您可以将其添加到原始帖子中？您可以给出运行迁移时所遇到错误的完整堆栈跟踪吗？文件“/Home/aldigitron/my first blog/myvenv/lib/python3.4/site packages/django/db…”感谢您的回复。当我运行迁移时，我得到了类似于。。。。return Database.Cursor.execute（self，query，param）django.db.utils.integrityyerror:UNIQUE constraint失败：blog_post.slugHmm，此处的注释字段将其截断。也许你可以把它添加到原来的帖子里？