无法在 Django Admin 中编辑 slug 字段

Question

我有一个 Django 应用程序，其模型具有 slug 字段。到目前为止，我只是简单地对模型的标签字段进行 slug 化，并使 slug 在管理员中只读。我的客户现在希望我允许他们自己将 slug 编辑为他们想要的任何内容。我取消了管理员中的只读访问权限，并将模型上的保存方法更改为不使用其 slugified 标签。但是，当我转到管理员并尝试更改 slug 时，保存它时它不会改变。当我尝试添加一个新的模型实例时，即使我输入了一些内容，它也会清空表单字段，并说需要 slug 字段。我在 Django 文档中读到，预先填充 slug 字段是自定义的，但它没有在任何地方说明它是必需的。

型号

class WebPage(models.Model):
    template = models.CharField(max_length=50, blank=True, null=True, choices=TEMPLATE_CHOICES, default='default')

    label = models.CharField(max_length=100)
    slug = models.SlugField(unique=True)

    meta_title = models.CharField(max_length=100, blank=True, null=True,
                                  help_text='This shows at the top of the browser, usually in the tab.')
    meta_description = models.CharField(max_length=180, blank=True, null=True,
                                        help_text='Optimal length is roughly 155 characters')
    meta_tags = models.CharField(max_length=500, blank=True, null=True)

    billboards = models.ManyToManyField(Billboard, blank=True, null=True)

    image_cover = FileBrowseField(max_length=400, blank=True, null=True, help_text='Roughly 1400px by 400px',
                                  verbose_name='Cover image')
    header_content = models.TextField(blank=True, null=True)

    # template overrides
    image_desktop = FileBrowseField(max_length=400, blank=True, null=True,
                                    verbose_name='Desktop logo', help_text='Transparent .png')
    image_mobile = FileBrowseField(max_length=400, blank=True, null=True,
                                   verbose_name='Mobile logo', help_text='Transparent .png')
    nav_color = models.CharField(max_length=7, blank=True, null=True)
    nav_hover_color = models.CharField(max_length=7, blank=True, null=True)
    pre_nav_color = models.CharField(max_length=7, blank=True, null=True)
    page_header_color = models.CharField(max_length=7, blank=True, null=True)

    is_published = models.BooleanField(default=True)
    create_date = models.DateTimeField(auto_now_add=True)
    modified_date = models.DateTimeField(auto_now=True)

    def __unicode__(self):
        return self.label

    def save(self, *args, **kwargs):
        self.slug = slugify(self.slug)

        super(WebPage, self).save(*args, **kwargs)

管理员

class WebPageAdmin(admin.ModelAdmin):
    model = WebPage
    list_display = ('label', 'slug', 'is_published', 'create_date')
    list_filter = ('modified_date', 'is_published')
    list_editable = ('is_published',)

    search_fields = ('label',)
    save_as = True

    # readonly_fields = ('slug',)
    filter_horizontal = ('billboards',)

    inlines = [
        PageSectionInline,
    ]

    fieldsets = (

        (None, {
            'classes': ('suit-tab suit-tab-general full-width',),
            'fields': ('template', 'label', 'slug', 'billboards', 'is_published')
        }),

        (None, {
            'classes': ('suit-tab suit-tab-overrides full-width',),
            'fields': ('image_desktop', 'image_mobile', 'nav_color', 'nav_hover_color', 'pre_nav_color',
                       'page_header_color')
        }),

        (None, {
            'classes': ('suit-tab suit-tab-seo full-width',),
            'fields': ('meta_title', 'meta_description', 'meta_tags', 'slug')
        }),

    )

    suit_form_tabs = (('general', 'General'), ('sections', 'Sections'),
                      ('overrides', 'Template Overrides'), ('seo', 'SEO'))

    class Media:
        js = [
            '//cdn.tinymce.com/4/tinymce.min.js',
            '/static/admin_js/tinymce_init.js',
            '/static/page/admin/webpage.js'
        ]

Answer 1

你总是在保存函数中使用现有的 slug 字段，检查值的变化。

def save(self, *args, **kwargs):
    self.slug = slugify(kwargs.pop('slug', self.slug))

    super(WebPage, self).save(*args, **kwargs)