清理内联实例

时间:2012-08-06 13:16:49

标签: python django django-forms django-orm

考虑这些伪模型:

class Category(models.Model):
    name = models.CharField()

class Product(models.Model):
    name = models.CharField()
    code = models.CharField()
    category = models.ForeignKey(Category)
    price = models.DecimalField()
    stock = models.IntegerField()

class AlternativeProduct(Product):
    original_product = models.ForeignKey(Product, related_name="alternative", editable=False)

我想使用内联来快速添加产品及其替代选项,而无需键入重复数据(仅限代码,库存和价格差异)。

admin.py

class AlternativeProductInline(admin.TabularInline):
    model = AlternativeProduct
    formset = AlternativeProductInlineFormset
    fk_name = "original_product"
    fields = ["code", "price", "in_stock"]
    max_num = 1
    extra = 0


class ProductAdmin(admin.ModelAdmin):
    form = ProductAdminForm
    inlines = [AlternativeProductInline]

当然,这会引发ValidationError,因为AlternativeProduct缺少category

现在我可以设置一个默认值来修复它:

class Product(models.Model):
    name = models.CharField()
    code = models.CharField()
    category = models.ForeignKey(Category, default=1)
    price = models.DecimalField()
    stock = models.IntegerField()

但除了这个id可能不存在之外,它还需要纠正。有没有其他方法(除了Javascript)将正版产品的类别值复制到替代内联产品' 引擎盖下 '

我试图更改admin_view,但它变得很乱,也许自定义视图会是一个很好的解决方案,虽然javascript是一种耗时较少的方法。

1 个答案:

答案 0 :(得分:0)

Javascript似乎是实现这一目标的简单方法。

$(document).ready(function(){
    $('#alternative-group thead th:nth-child(2)').hide();
    $('#alternative-group tbody td:nth-child(1) p').hide();
    $('#alternative-group tbody td:nth-child(3)').hide();
    $('#id_alternative-0-category').hide();

    var product_category = $('#id_category option:selected').val();
    $('#id_alternative-0-category').val(product_category);

    $("#id_category").change(function() {
        product_category = $('#id_category option:selected').val();
        $('#id_alternative-0-category').val(product_category);
    });
});