我目前正在开发django / mezzanine / cartridge商店。
我的所有产品都有一个CAD文件和一个PDF文件，为了保持DRY，我创建了一个BaseProduct模型，其定义如下：
models.py
class BaseProduct(Product):
cadfile = fields.FileField(upload_to="product", extensions=(".dwg",), blank=True, null=True)
pdffile = fields.FileField(upload_to="product", blank=True, null=True)
objects = SearchableManager()
search_fields = ("title", "description")
class Meta:
abstract = True
此外，我还有其他产品类型，可以按如下方式对此基本产品类型进行子类化。
class CorniceProduct(BaseProduct):
cornice_picture = fields.FileField(upload_to="product", null=True, blank=True)
ceiling_projection = models.IntegerField(null=True, blank=True)
wall_height = models.IntegerField(null=True, blank=True)
class CeilingRoseProduct(BaseProduct):
width = models.IntegerField(null=True, blank=True)
height = models.IntegerField(null=True, blank=True)
这适用于模型，问题来自夹层管理区域，这主要来自cartridge/shop/admin.py文件。
admin.py
option_fields = [f.name for f in ProductVariation.option_fields()]
product_fieldsets = deepcopy(DisplayableAdmin.fieldsets)
product_fieldsets[0][1]["fields"].insert(2, "available")
product_fieldsets[0][1]["fields"].extend(["content", "categories", "pdffile", "cadfile"])
product_fieldsets = list(product_fieldsets)
other_product_fields = []
if settings.SHOP_USE_RELATED_PRODUCTS:
other_product_fields.append("related_products")
if settings.SHOP_USE_UPSELL_PRODUCTS:
other_product_fields.append("upsell_products")
if len(other_product_fields) > 0:
product_fieldsets.append((_("Other products"), {
"classes": ("collapse-closed",),
"fields": tuple(other_product_fields)}))
product_list_display = ["admin_thumb", "title", "status", "available",
"admin_link"]
product_list_editable = ["status", "available"]
# If variations are used, set up the product option fields for managing
# variations. If not, expose the denormalised price fields for a product
# in the change list view.
if settings.SHOP_USE_VARIATIONS:
product_fieldsets.insert(1, (_("Create new variations"),
{"classes": ("create-variations",), "fields": option_fields}))
else:
extra_list_fields = ["sku", "unit_price", "sale_price", "num_in_stock"]
product_list_display[4:4] = extra_list_fields
product_list_editable.extend(extra_list_fields)
class CorniceProductAdmin(ProductAdmin):
cornice_additional_fieldsets = ("cornice_picture", "ceiling_projection", "wall_height" )
fieldsets = product_fieldsets
fieldsets.append((_("Cornice specific"), {
"fields": tuple(cornice_additional_fieldsets)
}))
admin.site.register(CorniceProduct, CorniceProductAdmin)
class CeilingRoseProductAdmin(ProductAdmin):
rose_additional_fieldsets = ("width", "height")
fieldsets = product_fieldsets
#del fieldsets[4]
fieldsets.append((_("Ceiling Rose specific"), {
"fields": tuple(rose_additional_fieldsets)
}))
exclude = ('cornice_picture', 'ceiling_projection', 'wall_height',)
admin.site.register(CeilingRoseProduct, CeilingRoseProductAdmin)
当我进入管理区域编辑ceilingroseproduct时，我收到以下错误：
错误＆amp;回溯
Template error:
In template /home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/grappelli_safe/templates/admin/change_form.html, error at line 14
Key 'cornice_picture' not found in 'CeilingRoseProductForm'. Choices are: _meta_title, available, cadfile, categories, content, description, expiry_date, gen_description, height, in_sitemap, keywords, option1, option2, pdffile, publish_date, related_products, slug, status, title, upsell_products, width. 4 : {% load i18n admin_urls admin_static admin_modify %}
5 :
6 : <!-- JAVASCRIPTS -->
7 : {% block javascripts %}
8 : {{ block.super }}
9 : {% url "admin:jsi18n" as jsi18nurl %}
10 : <script src="{{ jsi18nurl|default:"../../../jsi18n/" }}"></script>
11 : {{ media }}
12 : {% if inline_admin_formsets %}
13 : <script src="{% static "grappelli/js/admin/Inline.js" %}"></script>
14 : <script src="{% static "grappel li/js/admin/CollapsedInlineFieldsets.js" %}"></script>
15 : {% endif %}
16 : {% endblock %}
17 :
18 : <!-- COLTYPE/BODYCLASS -->
19 : {% block coltype %}colM{% endblock %}
20 : {% block bodyclass %}{{ opts.app_label }}-{{ opts.object_name.lower }} change-form{% endblock %}
21 :
22 : <!-- BREADCRUMBS -->
23 : {% block breadcrumbs %}{% if not is_popup %}
24 : <div class="breadcrumbs">
Traceback:
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/forms/forms.py" in __getitem__
144. field = self.fields[name]
During handling of the above exception ('cornice_picture'), another exception occurred:
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/core/handlers/exception.py" in inner
39. response = get_response(request)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/core/handlers/base.py" in _legacy_get_response
249. response = self._get_response(request)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/core/handlers/base.py" in _get_response
217. response = self.process_exception_by_middleware(e, request)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/core/handlers/base.py" in _get_response
215. response = response.render()
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/response.py" in render
109. self.content = self.rendered_content
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/response.py" in rendered_content
86. content = template.render(context, self._request)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/backends/django.py" in render
66. return self.template.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render
208. return self._render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/loader_tags.py" in render
174. return compiled_parent._render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/loader_tags.py" in render
174. return compiled_parent._render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/loader_tags.py" in render
70. result = block.nodelist.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/loader_tags.py" in render
70. result = block.nodelist.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/defaulttags.py" in render
209. nodelist.append(node.render_annotated(context))
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/loader_tags.py" in render
210. return template.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render
210. return self._render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/defaulttags.py" in render
209. nodelist.append(node.render_annotated(context))
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/template/defaulttags.py" in render
165. values = list(values)
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/contrib/admin/helpers.py" in __iter__
115. yield AdminField(self.form, field, is_first=(i == 0))
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/contrib/admin/helpers.py" in __init__
127. self.field = form[field] # A django.forms.BoundField instance
File "/home/vagrant/virtualenvs/mezzanine/lib/python3.4/site-packages/django/forms/forms.py" in __getitem__
150. ', '.join(sorted(f for f in self.fields)),
Exception Type: KeyError at /admin/my_shop/ceilingroseproduct/add/
Exception Value: "Key 'cornice_picture' not found in 'CeilingRoseProductForm'. Choices are: _meta_title, available, cadfile, categories, content, description, expiry_date, gen_description, height, in_sitemap, keywords, option1, option2, pdffile, publish_date, related_products, slug, status, title, upsell_products, width."
我可以通过umcommenting del fieldsets [4]行来修复它，但是这看起来非常hacky并且需要对每种产品类型进行这种覆盖，我并不是真的想做。
答案 0 :(得分：1)
在Cartridge中查看此PR，这将成为您正在尝试做的事情的正式方式：