python 3.在django中创建了一个modelform，缺少主键

Question

我在django中创建了一个modelform，但是主键字段在浏览器中丢失了。它在哪里?我怎样才能让它出现。让我知道，如果你需要更多的代码比我下面有。

view.py

import autocomplete_light
import datetime
from django.shortcuts import render, render_to_response, RequestContext
from django.http import HttpResponseRedirect
from django.utils.timezone import utc
from django.contrib.auth.decorators import login_required
from error_tracking.models import Incident
from django.contrib.auth import authenticate
from django.contrib.auth.models import User
from haystack.query import SearchQuerySet
from error_tracking.forms import IncidentForm

@login_required
def search_incidents(request):
    # form validation
    if request.method == 'POST':
        form = autocomplete_light.IncidentForm(request.POST)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/')
    else:
        form = IncidentForm()
    # grabbing all OPEN incidents
    incident_list = Incident.objects.filter(open = 'True').order_by('-incident_date_time_reported')
    return render(request, 'search_incidents.html', { 
        'incident_list' : incident_list,
        'user' : request.user,
        'form' : form
    })

forms.py

import autocomplete_light
from django.forms import ModelForm
from error_tracking.models import Incident
autocomplete_light.register(Incident, search_fields=['incident_id'])
class IncidentForm(autocomplete_light.ModelForm):
    class Meta:
        model = Incident
        fields = ['incident_id', 'user_id', 'equipment_id', 'incident_category', 'incident_date_time_reported', 'incident_date_time_occurred', 'description']

models.py

from django.db import models
from django.contrib.auth.models import User
from django.utils import timezone

class Manufacturer(models.Model):
        manufacturer = models.CharField(primary_key=True, max_length=100)
        def __str__(self):
                return self.manufacturer
        class Meta:
                verbose_name_plural="Manufacturer"
class Equipment_Category(models.Model):
        equipment_category = models.CharField(primary_key=True, max_length=100)
        def __str__(self):
                return self.equipment_category
        class Meta:
                verbose_name_plural="Equipment Category"
class Equipment(models.Model):
        product_id = models.CharField(primary_key=True,max_length=100)
        manufacturer = models.ForeignKey(Manufacturer)
        equipment_category = models.ForeignKey(Equipment_Category)
        validated= models.BooleanField(default=True)
        in_service_date = models.DateTimeField('in service date', default=timezone.now)
        def __str__(self):
               return self.product_id
        class Meta:
               verbose_name_plural="Equipment"
class Incident_Category(models.Model):
        incident_category = models.CharField(primary_key=True,max_length=100)
        description = models.CharField(max_length=100)
        def __str__(self):
               return self.incident_category
        class Meta:
                verbose_name_plural="Incident Category"
class Incident(models.Model):
       incident_id = models.AutoField(primary_key=True)
       incident_date_time_reported = models.DateTimeField('incident reported', default=timezone.now)
       user_id = models.ForeignKey(User)
       incident_date_time_occurred = models.DateTimeField('incident occurred', default=timezone.now)
       clinical_sample = models.BooleanField(default=True)
       number_of_clinical_samples = models.IntegerField(default=0)
       sample_id_numbers = models.TextField(max_length=1000)
       equipment_id = models.ForeignKey(Equipment)
       incident_category = models.ForeignKey(Incident_Category)
       technician = models.TextField(max_length=1000)
       description = models.TextField(max_length=1000)
       action_taken = models.TextField(max_length=1000)
       open = models.BooleanField(default=True)
       def __str__(self):
               return self.incident_id
       class Meta:
               verbose_name_plural="Incident"

search_incidents.html

{% extends "base.html" %}
{% block content %}
<br>
<p>Not only have you successfully logged in, you have also made it to the Search Incidents page using html templates</p>
<br><br>

<!--incident_id-->
<!--CAPA number-->
<!--Date From To-->
<!--Creator-->
<!--Status-->
<!--Category-->
<!--Equipment ID-->
<!--Search Description-->
<!--error_tracking.views.search_usernames-->
<form method='POST' action=''>{% csrf_token %}
    {{ form.as_p }}
    <input type="submit"/>
</form>

<div id="table-wrapper" style="overflow:auto; height:600px;">
    <table class="table table-striped">
        <thead>
        <tr>
            <th class="col-md-1">ID</th>
            <th class="col-md-1">Open</th>
            <th class="col-md-2">Created At</th>
            <th class="col-md-1">Category</th>
            <th class="col-md-7">Description</th>
        </tr>
        </thead>
        <tbody>
        {% for incident in incident_list %}
        <tr>
            <td class="col-md-1">{{ incident.incident_id }}</td>
            <td class="col-md-1">{{ incident.open }}</td>
            <td class="col-md-2">{{ incident.incident_date_time_reported }}</td>
            <td class="col-md-1">{{ incident.incident_category }}</td>
            <td class="col-md-7">{{ incident.description}}</td>
        </tr>
        {% endfor %}
        </tbody>
    </table>
</div>
{% endblock %}

Answer 1

在阅读了一些源代码之后，我认为您永远不会，即使是偶然地，将AutoField暴露给用户:

def pk_is_not_editable(pk):
        return ((not pk.editable) or (pk.auto_created or isinstance(pk, AutoField))

如果你真的想向你的用户公开PK(我不知道你为什么要这样做)，你必须在模型和表单上显式地公开它，因为IntegerField或ModelForm会为你排除它:

import autocomplete_light
from django.forms import ModelForm, IntegerField
from error_tracking.models import Incident
autocomplete_light.register(Incident, search_fields=['incident_id'])
class IncidentForm(autocomplete_light.ModelForm):
    class Meta:
        model = Incident
        fields = ['incident_id', 'user_id', 'equipment_id', 'incident_category', 'incident_date_time_reported', 'incident_date_time_occurred', 'description']
    incident_id = IntegerField()
class Incident(models.Model):
       incident_id = models.IntegerField(primary_key=True)
       incident_date_time_reported = models.DateTimeField('incident reported', default=timezone.now)
       user_id = models.ForeignKey(User)
       incident_date_time_occurred = models.DateTimeField('incident occurred', default=timezone.now)
       clinical_sample = models.BooleanField(default=True)
       number_of_clinical_samples = models.IntegerField(default=0)
       sample_id_numbers = models.TextField(max_length=1000)
       equipment_id = models.ForeignKey(Equipment)
       incident_category = models.ForeignKey(Incident_Category)
       technician = models.TextField(max_length=1000)
       description = models.TextField(max_length=1000)
       action_taken = models.TextField(max_length=1000)
       open = models.BooleanField(default=True)
       def __str__(self):
               return self.incident_id
       class Meta:
               verbose_name_plural="Incident"