django - Django UNIQUE constraint failed: core_organization.name
问题描述
So I have a model called Organization inside core/models.py. I am trying to implement CRUD Ajax on a single page. Inspired by this post. Every time I save an object of this model I get this error as shown below. I want to have multiple organizations that are unique.
core/models.py
class Organization(models.Model):
name = models.CharField(max_length=255, unique=True)
user = models.ForeignKey(User, on_delete=models.CASCADE)
gstin = models.CharField(max_length=15)
address = models.CharField(max_length=500)
city = models.CharField(max_length=50)
state = models.CharField(max_length=50)
zipcode = models.CharField(max_length=6)
country = models.CharField(max_length=50)
is_billed = models.BooleanField(default=False)
def __str__(self):
return f'{self.name} Organization'
core/forms.py
class OrganizationForm(forms.ModelForm):
class Meta:
model = models.Organization
fields = ('name', 'address', 'state', 'city', 'zipcode', 'country', 'gstin')
core/views.py
def save_organization_form(request, form, template_name):
data = dict()
if request.method == 'POST':
if form.is_valid():
stock = form.save(commit=False)
stock.user = request.user
stock.save()
data['form_is_valid'] = True
organizations = Organization.objects.all()
data['html_book_list'] = render_to_string('core/includes/partial_organization_list.html', {
'organizations': organizations
})
else:
data['form_is_valid'] = False
context = {'form': form}
data['html_form'] = render_to_string(template_name, context, request=request)
return JsonResponse(data)
@login_required(login_url="/accounts/login/")
def organization_create(request):
if request.method == 'POST':
form = OrganizationForm(request.POST)
else:
form = OrganizationForm()
return save_organization_form(request, form, 'core/includes/partial_organization_create.html')
templates/base.html
{% load static %}
<!DOCTYPE html>
<html>
<head>
<title>{% block head_title %}{% endblock %}</title>
{% block extra_head %}
{% endblock %}
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<link href='https://fonts.googleapis.com/css?family=Russo One' rel='stylesheet'>
<link rel="stylesheet" type="text/css" href="{% static 'font/flaticon.css' %}">
<link rel="stylesheet" href="{% static 'css/style.css' %}">
</head>
<body>
{% block body %}
{% if messages %}
<div class="text-center">
<strong>Messages:</strong>
<ul>
{% for message in messages %}
<li>{{message}}</li>
{% endfor %}
</ul>
</div>
{% endif %}
{% block content %}
{% endblock %}
{% endblock %}
{% block extra_body %}
{% endblock %}
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.min.js"
integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
{% block javascript %}
{% endblock %}
</body>
</html>
templates/core/organization_list.html
{% extends 'base.html' %}
{% load static %}
{% block javascript %}
<script src="{% static 'organizations/js/organizations.js' %}"></script>
{% endblock %}
{% block content %}
<h1 class="page-header">Organizations</h1>
<!-- BUTTON TO TRIGGER THE ACTION -->
<p>
<button type="button"
class="btn btn-primary js-create-book"
data-url="{% url 'organization_create' %}">
<span class="glyphicon glyphicon-plus"></span>
New Organization
</button>
</p>
<table class="table" id="book-table">
<thead>
<tr>
<th>#</th>
<th>Name</th>
<th>Address</th>
<th>State</th>
<th>City</th>
<th>Zipcode</th>
<th>Country</th>
<th>Billing Active</th>
</tr>
</thead>
<tbody>
{% include 'core/includes/partial_organization_list.html' %}
</tbody>
</table>
<!-- THE MODAL WE WILL BE USING -->
<div class="modal fade" id="modal-book">
<div class="modal-dialog">
<div class="modal-content">
</div>
</div>
</div>
{% endblock %}
templates/core/partial_organization_list.html
{% for organization in organizations %}
<tr>
<td>{{ organization.id }}</td>
<td>{{ organization.name }}</td>
<td>{{ organization.address }}</td>
<td>{{ organization.state }}</td>
<td>{{ organization.city }}</td>
<td>{{ organization.zipcode }}</td>
<td>{{ organization.country }}</td>
<td>{{ organization.is_billed }}</td>
<td>
<button type="button"
class="btn btn-warning btn-sm js-update-book"
data-url="{% url 'organization_update' organization.id %}">
<span class="glyphicon glyphicon-pencil"></span> Edit
</button>
<button type="button"
class="btn btn-danger btn-sm js-delete-book"
data-url="{% url 'organization_delete' organization.id %}">
<span class="glyphicon glyphicon-trash"></span> Delete
</button>
</td>
</tr>
{% empty %}
<tr>
<td colspan="8" class="text-center bg-warning">No Organization</td>
</tr>
{% endfor %}
static/organizations/js/organizations.js
$(function () {
$(".js-create-book").click(function () {
$.ajax({
url: '/profile/organization/create/',
type: 'get',
dataType: 'json',
beforeSend: function () {
$("#modal-book").modal("show");
},
success: function (data) {
$("#modal-book .modal-content").html(data.html_form);
}
});
});
});
$("#modal-book").on("submit", ".js-book-create-form", function () {
var form = $(this);
$.ajax({
url: form.attr("action"),
data: form.serialize(),
type: form.attr("method"),
dataType: 'json',
success: function (data) {
if (data.form_is_valid) {
$("#book-table tbody").html(data.html_book_list); // <-- Replace the table body
$("#modal-book").modal("hide"); // <-- Close the modal
}
else {
$("#modal-book .modal-content").html(data.html_form);
}
}
});
return false;
});
$(".js-create-book").click(function () {
var btn = $(this); // <-- HERE
$.ajax({
url: btn.attr("data-url"), // <-- AND HERE
type: 'get',
dataType: 'json',
beforeSend: function () {
$("#modal-book").modal("show");
},
success: function (data) {
$("#modal-book .modal-content").html(data.html_form);
}
});
});
$(function () {
/* Functions */
var loadForm = function () {
var btn = $(this);
$.ajax({
url: btn.attr("data-url"),
type: 'get',
dataType: 'json',
beforeSend: function () {
$("#modal-book").modal("show");
},
success: function (data) {
$("#modal-book .modal-content").html(data.html_form);
}
});
};
var saveForm = function () {
var form = $(this);
$.ajax({
url: form.attr("action"),
data: form.serialize(),
type: form.attr("method"),
dataType: 'json',
success: function (data) {
if (data.form_is_valid) {
$("#book-table tbody").html(data.html_book_list);
$("#modal-book").modal("hide");
}
else {
$("#modal-book .modal-content").html(data.html_form);
}
}
});
return false;
};
/* Binding */
// Create book
$(".js-create-book").click(loadForm);
$("#modal-book").on("submit", ".js-book-create-form", saveForm);
// Update book
$("#book-table").on("click", ".js-update-book", loadForm);
$("#modal-book").on("submit", ".js-book-update-form", saveForm);
// Delete book
$("#book-table").on("click", ".js-delete-book", loadForm);
$("#modal-book").on("submit", ".js-book-delete-form", saveForm);
});
And when I add a new organization I get the following error:
django.db.utils.IntegrityError: UNIQUE constraint failed: core_organization.name
How do I fix this?
解决方案
我相信您的 javascript 文件包含重复的 ajax 调用。
有 3 个调用来创建您的模态:
$(function () {
$(".js-create-book").click(function () {
在你的 js 文件的顶部。然后在你的 js 文件中间使用相同的函数。和
var loadForm = function ()
您绑定到脚本底部的单击事件。
此外还有两个处理表单数据提交的函数:
$("#modal-book").on("submit", ".js-book-create-form", function ()
在顶部和
var saveForm = function ()
在底部。
关于提交表单的重复可能会导致唯一约束错误,因为您要提交相同的数据两次。模态的重复加载可能不会导致任何明显的错误,而是不必要的加载。
你的javascript文件的底部,即以
$(function () {
/* Functions */
应该足够了。
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