将登录用户的用户名作为标签放在 Django 表单字段中

Question

我创建了简单的 django 博客应用程序，用户可以在其中登录和注销。在此应用程序中，用户只有在登录后才能创建新的 post。为此，我创建了一个用于为经过身份验证的用户创建 post 的表单，他必须在其中输入标题、作者姓名和上下文。但我想将登录用户的用户名作为标签放在用户无法编辑的 Author_name 字段中。所以我禁用了该字段进行编辑，但我无法将登录用户的用户名作为标签放入该字段中。需要帮助的人。

我的代码放在这里....

views.py

from django.shortcuts import render , redirect , get_object_or_404
from .models import Article , members
from django.views.generic import ListView , DetailView , TemplateView
from .forms import create_form
from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib.auth.decorators import login_required
from django.contrib.auth.models import User

class article_view(ListView):
    model = Article
    template_name = "article.html"
    context_object_name = "articles"


@login_required
def post_creator(request):
    form = create_form()
    if request.method == "POST":
        form = create_form(request.POST)
        if form.is_valid():
            form.save()
            return redirect("/blog/home/")

    else:
        form = create_form()
    return render(request , "post_create.html" , {"form":form})

def registration(request):
    if request.method == "POST":
        form = members(request.POST)
        if form.is_valid():
            form.save()

            return redirect("/blog/home/")

    else:
        form = members()
    return render(request , "register.html" , {"form":form})    



class post_detail_view(LoginRequiredMixin , DetailView):
    model = Article
    template_name = "detail.html"

#class profile(TemplateView):
#   model = members
#   template_name = "profile.html"

def counts(request):
    counts = Article.objects.filter(author=request.user).count()
    context = {

        "counts":counts
    }
    return render(request , "profile.html" , context)

forms.py

from django import forms
from datetime import date
from .models import Article
import datetime
from django.contrib.auth.models import User

class create_form(forms.ModelForm):
    author = forms.CharField(required=False , widget=forms.TextInput(attrs={'readonly':'True'}))

    class Meta:
        model = Article
        fields = ["title" , "author" , "content"]

models.py

from django.db import models
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.models import User



class Article(models.Model):
    title = models.CharField(max_length=100)
    author = models.CharField(max_length=50)
    date_pub = models.DateTimeField(auto_now=True)
    content = models.TextField()

    def __str__(self):
        return self.title


class members(UserCreationForm):
    email = models.EmailField()

    class Meta:
        model = User
        fields = ["username" , "email"]

create_post.html

{% load crispy_forms_tags %}
<!DOCTYPE html>
<html>

<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">



    <title>Create Post</title>
</head>


</head>
<body style="background-color: darkgrey;">
    <div>
        <fieldset style="width: 50%;background-color: white;padding: 25px ;margin-left: 350px;margin-top: 15px;border-color: black;">
            <form method="POST">
            <legend>Create New Post</legend>
                {% csrf_token %}
                {{ form|crispy }}
                <button class="btn btn-outline-info" type="submit">Create</button>
            </form>
        </fieldset>
    </div>

</body>
</html>

希望这有助于理解我的问题。

Answer 1

直接适用于您的代码的最简单的解决方案，您可以做到

form = create_form(initial={'author':request.user.username}) #or request.user may work because it returns the username as a string

作为更通用的解决方案，如果用户名因任何原因发生更改，它也会更新用户名，将使用 ForeignKey

在你models.py

    class Article(models.Model):
        title = models.CharField(max_length=100)
        author = models.ForeignKey(User, null=True, on_delete=models.SET_NULL)
        date_pub = models.DateTimeField(auto_now=True)
        content = models.TextField()

        def __str__(self):
            return self.title

在您的 forms.py 中不列出它 在 fields 中将其列为字段之一（保持原样）。

然后在你的views.py中赋值如下：

if form.is_valid():
    instance=form.save(commit=False)
    instance.author=request.user
    instance.save()

为了保持一致性，您将示例中的 author 更改为 author_name。这里的想法是，您可以按用户（或用户的任何其他属性，例如年龄或性别或您的模型实际包含的任何内容）进行过滤

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