django admin 实现 增加记录 和 修改记录 展现不同的表单

2023-02-18 10:46:30 浏览数 (2)

说明

提供一个参考，具体逻辑要看具体情况。本质就是根据条件展示不同的表单内容（注意表单必填项字段，保存时要记得传值）。

根据用户返回表单，注意必填项保存时要给值

代码语言：javascript复制
from django.contrib import admin
from blog.models import *
from blog.forms import ArticleAddForm, ArticleSupperAddForm


class ArticleAdmin(admin.ModelAdmin):
    class Media:
        css = {
            "all": ("static/styles/monokai_sublime.css",)
        }
        # js = ("my_code.js",)

    def get_list_display(self, request):
        """
        Return a sequence containing the fields to be displayed on the
        changelist.
        """
        # 一个model可能有很多的字段，但不可能全部显示出来，这样页面肯定不好看，而且不同的用户对字段的侧重点是不同的。
        # if request.user == 'A':
        #     self.list_display = ('AA', 'AB', 'AC')
        # else:
        #     self.list_display = ('AA', 'AB')
        #
        return self.list_display

    def get_queryset(self, request):
        """
        根据用户返回文章列表
        :param request:
        :return:
        """
        qs = super().get_queryset(request)
        if request.user.is_superuser:
            return qs
        return qs.filter(author=request.user)

    def get_form(self, request, obj, **kwargs):
        """
        根据用户返回表单
        :param request:
        :param obj:
        :param kwargs:
        :return:
        """
        # print("obj.author1", obj.author)
        # print("request1", request.user)
        if request.user.is_superuser:
            kwargs['form'] = ArticleSupperAddForm
        else:
            kwargs['form'] = ArticleAddForm
        return super(ArticleAdmin, self).get_form(request, obj, **kwargs)

    def save_model(self, request, obj, form, change):
        """
        根据登录的用户，自动添加新建文章的作者
        :param request:
        :param obj:
        :param form:
        :param change:
        :return:
        """
        # print("obj.author", obj.author)
        # print("request", request.user)
        obj_has_author = hasattr(obj, "author")
        # print(obj_has_author)
        if not obj_has_author:
            obj.author = request.user

        super().save_model(request, obj, form, change)

根据表单是否为空返回表单，只需要修改 get_form

代码语言：javascript复制
def get_form(self, request, obj=None, **kwargs):
    if obj is None:
        kwargs['form'] = ArticleAddForm
    return super().get_form(request, obj, **kwargs)

ArticleAddForm

代码语言：javascript复制
class ArticleAddForm(forms.ModelForm):
    class Meta:
        model = Article
        # fields = (' node', 'source', 'title', 'content', )
        exclude = ['author', 'last_reply', 'is_comment', 'num_views', 'num_favorites']
        widgets = {
            "title": TextInput(attrs={"style": "width:45%;", "placeholder": "请输入标题"}),
        }

ArticleSupperAddForm

代码语言：javascript复制
class ArticleSupperAddForm(forms.ModelForm):
    class Meta:
        model = Article
        exclude = ['author', 'last_reply', ]
        widgets = {
            "title": TextInput(attrs={"style": "width:45%;", "placeholder": "请输入标题"}),
        }

Article model

代码语言：javascript复制
# 主题表/文章表
class Article(models.Model):
    title = models.CharField(max_length=128, verbose_name="标题")
    content = RichTextUploadingField(verbose_name="内容", config_name='awesome_ckeditor')
    node = models.ForeignKey(Node, verbose_name="所属节点")
    author = models.ForeignKey(User, related_name="author_set", verbose_name="作者")
    source = models.ForeignKey(Source, verbose_name="来源", blank=True,
                               null=True)
    tags = models.ManyToManyField(Tag, verbose_name="标签", related_name="tags_set", blank=True)
    num_views = models.IntegerField(default=0, verbose_name="浏览数量")
    num_favorites = models.IntegerField(default=0, verbose_name="收藏数量")
    last_reply = models.ForeignKey(User, related_name="last_reply_set", verbose_name="最后回复者", blank=True,
                                   null=True)
    time_created = models.DateTimeField(auto_now_add=True, verbose_name="发表时间")
    time_updated = models.DateTimeField(blank=True, null=True, auto_now=True, verbose_name="更新时间")
    show_status = models.BooleanField(default=True, verbose_name="是否显示")
    is_comment = models.BooleanField(default=False, verbose_name="临时评论")
    is_top = models.BooleanField(default=False, verbose_name="是否置顶")

    class Meta:
        verbose_name = "文章"
        verbose_name_plural = "文章列表"

    # 获取后台文本编辑器图文内容中图片url地址
    def get_contentimg_url(self):
        temp = Article.objects.filter(pk=str(self.id)).values('content')  # values获取Article数据表中的content字段内容
        html = pq(temp[0]['content'])  # pq方法获取编辑器html内容
        # print(html, "n", "----")
        img_path = pq(html)('img').attr('src')  # 截取html内容中的路径
        # print("pic", img_path)
        return img_path  # 返回第一张图片路径

    def get_absolute_url(self):
        return reverse('blog:detail', kwargs={
            "pk": self.id,
        })

    def get_full_url(self):
        site = get_current_site().domain
        url = "https://{site}{path}".format(site=site, path=self.get_absolute_url())
        return url

    def __str__(self):
        if len(self.title) > 15:
            title_short = self.title[:12]   '...'
        else:
            title_short = self.title
        return "%s %s %s" % (self.id, self.author, title_short)
form model 表单

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