Django表单字段预填充：用户个人信息自动加载实践

    if request.method == 'POST':
        # 错误示例：在这里使用initial参数是无效的
        form = ReviewsForm(request.POST, request.FILES, initial={
            'name': profile.default_full_name,
        },)
        if form.is_valid():
             # ... (处理表单数据)

from django.shortcuts import render, redirect, reverse
from django.contrib import messages
from django.contrib.auth.decorators import login_required
from .forms import ReviewsForm
from profiles.models import UserProfile # 确保导入UserProfile模型

@login_required
def add_review(request):
    """ 添加评论到评论页面 """
    # 确保用户已登录，虽然@login_required已处理，但内部逻辑可能需要
    if not request.user.is_authenticated: # 更安全的检查方式
        messages.error(request, '抱歉，您必须登录才能执行此操作。')
        return redirect(reverse('reviews'))

    # 尝试获取当前用户的个人资料
    try:
        profile = UserProfile.objects.get(user=request.user)
    except UserProfile.DoesNotExist:
        # 如果用户没有个人资料，可以提供一个空表单或采取其他处理
        profile = None
        messages.warning(request, '您的个人资料缺失，部分信息可能无法自动填充。')

    if request.method == 'POST':
        # 处理表单提交：此时不应使用initial，因为用户已经提交了数据
        form = ReviewsForm(request.POST, request.FILES)
        if form.is_valid():
            review = form.save(commit=False)
            # 如果需要将评论与用户资料关联，可以在这里设置
            if profile:
                review.user_profile = profile
            review.save()
            messages.success(request, '评论发布成功，等待审核。')
            return redirect(reverse('reviews'))
        else:
            messages.error(request, '添加评论失败。请确保表单内容有效。')
    else:
        # 处理GET请求：首次加载表单时，使用initial参数预填充
        initial_data = {}
        if profile:
            initial_data['name'] = profile.default_full_name # 从用户资料中获取姓名

        form = ReviewsForm(initial=initial_data)

    template = 'reviews/add_review.html'
    context = {
        'form': form,
    }
    return render(request, template, context)

from django.db import models
from django.core.validators import MinValueValidator, MaxValueValidator
from profiles.models import UserProfile # 导入UserProfile模型

class Reviews(models.Model):
    """定义评论模型"""
    class Meta:
        verbose_name_plural = "Reviews"

    review_title = models.CharField(max_length=120)
    name = models.CharField(max_length=200) # 用于存储姓名的字段
    updated_on = models.DateTimeField(auto_now=True)
    review_text = models.TextField(null=True, max_length=500)
    review_rating = models.IntegerField(validators=[
        MinValueValidator(1),
        MaxValueValidator(5)],
        null=True)
    image = models.ImageField(upload_to="reviews_images/", null=True, blank=True)
    approved = models.BooleanField(default=False)
    # 关联到UserProfile模型
    user_profile = models.ForeignKey(UserProfile, on_delete=models.SET_NULL, 
                                     null=True, blank=True, related_name='review_profile')

    def __str__(self):
        return self.name

# 示例：profiles/models.py (根据实际项目调整)
from django.db import models
from django.contrib.auth.models import User
from django_countries.fields import CountryField

class UserProfile(models.Model):
    """
    用户个人资料模型，扩展Django内置User模型
    """
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    default_full_name = models.CharField(max_length=50, null=True, blank=True)
    default_phone_number = models.CharField(max_length=20, null=True, blank=True)
    default_country = CountryField(blank_label='Country', null=True, blank=True)
    default_postcode = models.CharField(max_length=20, null=True, blank=True)
    default_town_or_city = models.CharField(max_length=40, null=True, blank=True)
    default_street_address1 = models.CharField(max_length=80, null=True, blank=True)
    default_street_address2 = models.CharField(max_length=80, null=True, blank=True)
    default_county = models.CharField(max_length=80, null=True, blank=True)

    def __str__(self):
        return self.user.username

from django import forms
from .models import Reviews
# from .widgets import CustomClearableFileInput # 如果有自定义widget，请保留

class ReviewsForm(forms.ModelForm):
    """ 创建评论表单 """

    class Meta:
        model = Reviews
        fields = ("name", "review_title", "review_rating", "review_text", "image")

    # 如果有自定义ImageField，请保留
    # image = forms.ImageField(
    #     label='Image', required=False, widget=CustomClearableFileInput
    # )