django-import-export 覆盖不起作用
django-import-export override not working
我正在覆盖 django-import-export 资源的方法。但是只执行父方法。
models.py
class Model(models.Model):
modelField1 = models.CharField(
modelField2...
modelField3...
admin.py
class ModelResource(resources.ModelResource):
def before_import(self, dataset, using_transactions, dry_run, **kwargs):
print("INside BEfore IMport")
dataset.headers = ('modelField1', 'modelField2', ...)
del dataset[0]
def get_instance(self, instance_loader, row):
print("Inside get instance")
return False
def get_or_init_instance(self, instance_loader, row):
print("INside Get or init")
instance = self.get_instance(instance_loader, row)
if instance:
return (instance, False)
else:
return (self.init_instance(row), True)
@admin.register(Model)
class ModelAdmin(ImportExportModelAdmin):
class Meta:
model = MOdel
resource_class = ModelResource
list_display = ('modelField1', 'modelField2', ...)
search_fields = ('modelField1', 'modelField2', ...)
我根本没有在控制台中收到打印语句。错误直接从父方法中抛出。他们根本不应该被处决。我说得对吗?
Line number: 1 - u"Column 'id' not found in dataset. Available columns are: [u'Col1', u'Col2', u'Col2', ...]"
Traceback (most recent call last):
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/resources.py", line 434, in import_row
instance, new = self.get_or_init_instance(instance_loader, row)
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/resources.py", line 258, in get_or_init_instance
instance = self.get_instance(instance_loader, row)
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/resources.py", line 252, in get_instance
return instance_loader.get_instance(row)
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/instance_loaders.py", line 32, in get_instance
params[field.attribute] = field.clean(row)
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/fields.py", line 63, in clean
list(data.keys())))
KeyError: u"Column 'id' not found in dataset. Available columns are: [u'Col1', u'Col2', u'Col2', ...]"
Excel 文档中的列名称为 "Col1"、"Col2"、...
问题:所以如果你注意到上面代码中的错误,它们来自于我重载的父方法。他们为什么被处决? Shouldn.tmy 执行代码在控制台中打印打印行?
根据 documentation,嵌套 Meta
class 不是必需的。所以管理员 class 应该是这样的:
@admin.register(Model)
class ModelAdmin(ImportExportModelAdmin):
resource_class = ModelResource
list_display = ('modelField1', 'modelField2', ...)
search_fields = ('modelField1', 'modelField2', ...)
我正在覆盖 django-import-export 资源的方法。但是只执行父方法。
models.py
class Model(models.Model):
modelField1 = models.CharField(
modelField2...
modelField3...
admin.py
class ModelResource(resources.ModelResource):
def before_import(self, dataset, using_transactions, dry_run, **kwargs):
print("INside BEfore IMport")
dataset.headers = ('modelField1', 'modelField2', ...)
del dataset[0]
def get_instance(self, instance_loader, row):
print("Inside get instance")
return False
def get_or_init_instance(self, instance_loader, row):
print("INside Get or init")
instance = self.get_instance(instance_loader, row)
if instance:
return (instance, False)
else:
return (self.init_instance(row), True)
@admin.register(Model)
class ModelAdmin(ImportExportModelAdmin):
class Meta:
model = MOdel
resource_class = ModelResource
list_display = ('modelField1', 'modelField2', ...)
search_fields = ('modelField1', 'modelField2', ...)
我根本没有在控制台中收到打印语句。错误直接从父方法中抛出。他们根本不应该被处决。我说得对吗?
Line number: 1 - u"Column 'id' not found in dataset. Available columns are: [u'Col1', u'Col2', u'Col2', ...]"
Traceback (most recent call last):
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/resources.py", line 434, in import_row
instance, new = self.get_or_init_instance(instance_loader, row)
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/resources.py", line 258, in get_or_init_instance
instance = self.get_instance(instance_loader, row)
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/resources.py", line 252, in get_instance
return instance_loader.get_instance(row)
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/instance_loaders.py", line 32, in get_instance
params[field.attribute] = field.clean(row)
File "/home/aswin/projects/mastercityenv/local/lib/python2.7/site-packages/import_export/fields.py", line 63, in clean
list(data.keys())))
KeyError: u"Column 'id' not found in dataset. Available columns are: [u'Col1', u'Col2', u'Col2', ...]"
Excel 文档中的列名称为 "Col1"、"Col2"、...
问题:所以如果你注意到上面代码中的错误,它们来自于我重载的父方法。他们为什么被处决? Shouldn.tmy 执行代码在控制台中打印打印行?
根据 documentation,嵌套 Meta
class 不是必需的。所以管理员 class 应该是这样的:
@admin.register(Model)
class ModelAdmin(ImportExportModelAdmin):
resource_class = ModelResource
list_display = ('modelField1', 'modelField2', ...)
search_fields = ('modelField1', 'modelField2', ...)