Django表单不会显示在模板上

Question

我正在Django Python中建立登录系统，我一直在准备Forms.py，views.py和模板本身，但是到目前为止，表单无法加载到模板上，有人可以帮忙吗？

Forms.py

class Email_Only_SignUp_Form(forms.Form):
    email = forms.EmailField(initial='Your Email...')

Views.py

def email_only_signup_form(request, template_name):
    if request.method == 'POST':
        signup_form = Email_Only_SignUp_Form(request.POST)

        if signup_form.is_valid():
            email = signup_form.cleaned_data['email']
            username = email

            try:
                #check for duplicate username
                    User.objects.get(username=username)
                    email_error = 'email already exist'
            except:
                #initial creation of user object
                try:
                    import os, random, string

                    length = 13
                    chars = string.ascii_letters + string.digits + '!@$()'
                    random.seed = (os.urandom(1024))
                    password = ''.join(random.choice(chars) for i in range(length))

                    User.objects.create_user(username,
                                             username,
                                             password,
                    )
                    user = User.objects.get(username=username)
                    user_profile=UserProfile(user=user)
                    user_profile.save()

                    #send email to user
                    try:
                        admin_email = settings.EMAIL_ORIGIN_MEMBERS
                        email_txt = loader.get_template('account/emails/createaccount.html')
                        email_html = loader.get_template('account/emails/createaccounthtml.html')
                        email_context = Context({'u_name': username,
                                                 'username': username,
                                                 'password': password,
                                                })
                        new_user_mail = EmailMultiAlternatives('Welcome!',
                                                               email_txt.render(email_context),
                                                               admin_email,
                                                               [user.email, ],
                                                               headers={'Reply-To': 'admin@admin.com'}
                        )
                        new_user_mail.attach_alternative(email_html.render(email_context), 'text/html')
                        new_user_mail.send()
                    except:
                        pass

                    return redirect('/account/thankyou/?next=%s'%next)

                except:
                     pass

        else:
            print('user form in not valid')

    else:
        signup_form = Email_Only_SignUp_Form()

    return render_to_response(template_name, locals(), context_instance=RequestContext(request))

email_only_signup_form.html

{% extends "index.html" %}

{% block heroslider %}
    <div class="page_title2" style="padding:150px 0px 50px 0px;">
        <div class="container">

            <h1>User Registration</h1>

        </div>
    </div><!-- end page title -->
{% endblock %}

{% block main_body %}

<style type="text/css">
    input[type='radio'], input[type='checkbox'] {
        width:20px;
        vertical-align: middle;
    }

    div.reg_error {
        position:relative;
        top:-10px;
        margin-top:0px;
        padding-top:0px;
        color:red;
    }
</style>

<div class="container">
    <form class="pagesignup logiform" action="" method="POST">{% csrf_token %}
        <div class="row">
            <div class="large-12 columns" style="margin-bottom: 30px;">
                <div class="reg_form">
                    <div class="sky-form">
                        <header>REGISTER</header>
                    </div>

                    <div class="row">
                        <div class="large-12 columns">

                            <p>Email<br/>
                                {{signup_form.email}}
                            <div class="reg_error">{{ signup_form.email.errors.as_text }}{{email_error}}</div></p>

                        </div>
                    </div>
                    <div class="row">
                        <div class="large-12 large-centered columns" style="text-align:center;padding:20px;">
                            <input class="but_medium1" style="border:none;" type = "submit" value="REGISTER" /><br>
                            <br>By clicking on register, you have read and agreed to our <a href="/terms-of-use/">terms of use</a>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </form>
</div>
<!-- Google Code for Sign Up Page (landed) Conversion Page -->
<script type="text/javascript">
    /* <![CDATA[ */
    var google_conversion_id = 969557266;
    var google_conversion_language = "en";
    var google_conversion_format = "3";
    var google_conversion_color = "ffffff";
    var google_conversion_label = "5zU4CJby_FoQkoqpzgM";
    var google_remarketing_only = false;
    /* ]]> */
</script>
<script type="text/javascript" src="//www.googleadservices.com/pagead/conversion.js">
</script>
<noscript>
    <div style="display:inline;">
    <img height="1" width="1" style="border-style:none;" alt="" src="//www.googleadservices.com/pagead/conversion/969557266/?label=5zU4CJby_FoQkoqpzgM&amp;guid=ON&amp;script=0"/>
    </div>
</noscript>
{% endblock %}

Answer 1

您尚未将signup_form传递给模板。

return render_to_response(template_name,  {'signup_form': signup_form}, context_instance=RequestContext(request))

我不知道locals（）做什么。

编辑：我刚刚看到了本地人，这是内置的python函数。 如果您在模板中显式传递所需的变量，将会更好。

编辑2：检查它是否正确的template_name。 在模板中，只需打印并查看表单{{signup_form}}。 查看是否可用。

Answer 2

您没有返回表格。 尝试将视图的最后一行更改为

return render_to_response(template_name, locals(), context_instance=RequestContext(request, {'signup_form' : signup_form ))