我在服务器中有一个PHP脚本，根据电子邮件地址是否可用返回{"available":true}或{"available":false}。下面是代码:
<?php
$servername = "localhost";
$username = "root";
$password = "mysqlpass";
$dbname = "testdb";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT username FROM testtable";
$result = $conn->query($sql);
$query = $_GET['query'].'@groupdesignace.com';
$arr = array();
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
$arr[] = $row['username'];
}
if (in_array($query, $arr)) {
$output = array('available' => false);
echo json_encode($output);
} else {
$output = array('available' => true);
echo json_encode($output);
}
} else {
echo "0 results";
}
$conn->close();
?>
在另一个服务器上，用户通过表单请求他们的电子邮件地址，我使用Django。我写了以下代码检查邮件是否可用，如果不可用，应该会报错。下面是代码:
class RequestEmailAddressForm(forms.Form):
email = forms.CharField(label='Email', max_length=100)
password = forms.CharField(widget=forms.PasswordInput)
def clean_email(self):
email = self.cleaned_data.get('email')
if email:
import requests
payload = {'query': email}
r = requests.get('http://172.16.16.172/check_email.php', params=payload)
result = r.json()
print r.url
status = result['available']
if status == False:
raise forms.ValidationError('This login name is unavailable!')
return email
下面是我处理表单的视图:
def request_email_address(request):
if request.method == "POST":
form = RequestEmailAddressForm(request.POST)
if form.is_valid():
data = form.cleaned_data
# do something here
else:
pass
return HttpResponseRedirect('/core/home/')
else:
form = RequestEmailAddressForm()
return render(request, "core/request_email_address.html", { "form": form })
但是，表单将转到提交的页面，但没有引发验证错误。我做错了什么?
如果表单无效，您没有做任何事情。当ValidationError被抛出时，django设置form.errors dict，其中包含验证过程中出错的数据。阅读更多https://docs.djangoproject.com/en/1.10/ref/forms/validation/
def request_email_address(request):
if request.method == "POST":
form = RequestEmailAddressForm(request.POST)
if form.is_valid(): # <- form validation is called on this line
data = form.cleaned_data
# do something here
# do redirect here
return HttpResponseRedirect('/core/home/')
else:
pass
else:
form = RequestEmailAddressForm()
return render(request, "core/request_email_address.html", { "form": form })