先做了一個簡易的文件創建頁面
doc_info/views.py
設定成用get載入http://127.0.0.1:8000/doc/create/
就顯示文件創建頁的表單

如果是post載入
就執行資料創建還有重新轉址到使用者個人文件頁
render: 是將資料從這個view傳送給指定的html然後呈現出來
從create的view裡面return render到 user list.html
跟從user list的view裡面return render到 user list.html 結果可能不一樣
因為個別view裡面傳送出去的資訊可能不同
redirect: 等於是重新載入特定網址
此處doc_id不用指定因為會自行創建

@login_required
def doc_create(request):
    if request.method == "POST":
        user_id = request.user.id
        doc_create_date = datetime.now()
        doc_title = request.POST.get('title','')
        doc_remark = request.POST.get('remark','')
        upload_file = request.FILES.get('upload_file','')
        doc = doc_warehouse(
            create_date = doc_create_date,
            user_id = user_id,
            title = doc_title,
            remark = doc_remark,
            upload_file = upload_file,
        )
        doc.save()
        user_profile = get_object_or_404(UserProfile, user=request.user)
        user_profile.phone_number = request.POST.get('phone_number','')
        user_profile.save()
        return redirect('/doc/user/list')
    else:
        user = request.user
        Doc_warehouse = doc_warehouse.objects.filter(user_id=user.id)
        form = CreateForm()
        context = {
            'form': form
        }
        return render(request, 'doc/create.html', context)

網址就一樣簡單明瞭
doc_info/urls.py

urlpatterns = [
    path('doc/create/', views.doc_create, name='create'),
]

action保持""，在summit後會傳送回本頁
在測試的時候可以改成{% url 'doc_info:test' %}傳送到test將request的資訊都列出來
如果使用者有手機就列出手機
沒有手機就強制他一定要輸入手機 送出資料後會存到使用者profile
templates/create.html

{% block content %}

<a href="{% url 'doc_info:main' %}">Main page</a> |
<a href="{% url 'auth_info:profile' %}">My Profile</a> | 
<a href="{% url 'account_logout' %}">Logout</a>

<form method="post" action="" enctype="multipart/form-data">
    {% csrf_token %}
    <h3>Create Document</h3>
    <table>
        <tr>
            <th>Author: </th>
            <td>{{ user.first_name }} {{ user.last_name }}</td>
        </tr>
        <tr>
            <th>Contact Email: </th>
            <td>{{ user.email }}</td>
        </tr>        
        {% if user.userprofile.phone_number %}
            <tr>
                <th>Contact Phone: </th>
                <td>{{ user.userprofile.phone_number }}</td>
            </tr>
        {% else %}
            <tr>
                <th>Contact Phone: </th>
                <td>{{ form.phone_number }}</td>
            </tr>
        {% endif %}
        <!-- need to have some gap here -->
        <tr>
            <th>Title: </th>
            <td>{{ form.title }}</td>
        </tr>
        <tr>
            <th>Remark: </th>
            <td>{{ form.remark }}</td>
        </tr>
        <tr>
            <th>Attachment: </th>
            <td><input type="file" name="upload_file"></td>
        </tr>
    </table>
    <div class="button-wrapper submit">
        <input type="submit" value="Save" />
    </div>
</form>

{% endblock %}