Django1.4.1アプリにを持っているAttachmentモデルがあります。FileFieldこれFileFieldには呼び出し可能なパラメーターがあり、フォーム（したがってモデル）が保存されるときに Djangoのドキュメントupload_toごとに呼び出す必要があります。
以下を実行FormTestすると、upload_tocallableが呼び出されないため、メソッドによって指定された場所にファイルが表示されませんupload_to。私は何が間違っているのですか？
のテストに合格するとModelTest（以下も参照）、upload_toメソッドは期待どおりに機能することに注意してください。
私が見たものは問題ではないようです：
Attachmentモデル内のプロパティの順序。この順序が重要であることを示しているように見えるいくつかの質問を見つけました。私のupload_toメソッドはdirectoryプロパティを使用しているので、彼が問題を引き起こす可能性があると思いました。そうではありません。これにより、メソッドが呼び出されなくなることはありません。- おそらく
is_valid()呼び出されていません。いいえ、確認しました。 - ..。
テスト：
from core.forms.attachments import AttachmentForm
from django.test import TestCase
import unittest
from django.core.files.uploadedfile import SimpleUploadedFile
from django.core.files.storage import default_storage
def suite():
return unittest.TestSuite(
[
unittest.TestLoader().loadTestsFromTestCase(FormTest),
]
)
class FormTest(TestCase):
def test_form_1(self):
filename = 'filename'
f = file(filename)
data = {'name':'name',}
file_data = {'attachment_file':SimpleUploadedFile(f.name,f.read()),}
form = AttachmentForm(data=data,files=file_data)
self.assertTrue(form.is_valid())
attachment = form.save()
root_directory = 'attachments'
upload_location = root_directory + '/' + attachment.directory + '/' + filename
self.assertTrue(attachment.attachment_file) # Fails
self.assertTrue(default_storage.exists(upload_location)) # Fails
アタッチメントモデル：
from django.db import models
from parent_mixins import Parent_Mixin
import uuid
from django.db.models.signals import pre_delete,pre_save
from dirtyfields import DirtyFieldsMixin
def upload_to(instance,filename):
return 'attachments/' + instance.directory + '/' + filename
def uuid_directory_name():
return uuid.uuid4().hex
class Attachment(DirtyFieldsMixin,Parent_Mixin,models.Model):
attachment_file = models.FileField(blank=True,null=True,upload_to=upload_to)
directory = models.CharField(blank=False,default=uuid_directory_name,null=False,max_length=32)
name = models.CharField(blank=False,default=None,null=False,max_length=128)
class Meta:
app_label = 'core'
def __str__(self):
return unicode(self).encode('utf-8')
def __unicode__(self):
return unicode(self.name)
@models.permalink
def get_absolute_url(self):
return('core_attachments_update',(),{'pk': self.pk})
# def save(self,*args,**kwargs):
# super(Attachment,self).save(*args,**kwargs)
def pre_delete_callback(sender, instance, *args, **kwargs):
if not isinstance(instance, Attachment): return
if not instance.attachment_file: return
instance.attachment_file.delete(save=False)
def pre_save_callback(sender, instance, *args, **kwargs):
if not isinstance(instance, Attachment): return
if not instance.attachment_file: return
if instance.is_dirty():
dirty_fields = instance.get_dirty_fields()
if 'attachment_file' in dirty_fields:
old_attachment_file = dirty_fields['attachment_file']
old_attachment_file.delete()
pre_delete.connect(pre_delete_callback)
pre_save.connect(pre_save_callback)
添付フォーム：
from ..models.attachments import Attachment
from crispy_forms.helper import FormHelper
from crispy_forms.layout import Div,Layout,HTML,Field,Fieldset,Button,ButtonHolder,Submit
from django import forms
class AttachmentFormHelper(FormHelper):
form_tag=False
layout = Layout(
Div(
Div(
Field('name',css_class='span4'),
Field('attachment_file',css_class='span4'),
css_class='span4',
),
css_class='row',
),
)
class AttachmentForm(forms.ModelForm):
helper = AttachmentFormHelper()
class Meta:
fields=('attachment_file','name')
model = Attachment
class AttachmentInlineFormHelper(FormHelper):
form_tag=False
form_style='inline'
layout = Layout(
Div(
Div(
Field('name',css_class='span4'),
Field('attachment_file',css_class='span4'),
Field('DELETE',css_class='span4'),
css_class='span4',
),
css_class='row',
),
)
class AttachmentInlineForm(forms.ModelForm):
helper = AttachmentInlineFormHelper()
class Meta:
fields=('attachment_file','name')
model = Attachment
アップデート
また、これらの単体テストを使用してモデルクラスのテストも行います。Attachmentこれらはすべて合格です。
from core.models.attachments import Attachment
from core.models.attachments import upload_to
from django.test import TestCase
import unittest
from django.core.files.storage import default_storage
from django.core.files.base import ContentFile
def suite():
return unittest.TestSuite(
[
unittest.TestLoader().loadTestsFromTestCase(ModelTest),
]
)
class ModelTest(TestCase):
def test_model_minimum_fields(self):
attachment = Attachment(name='name')
attachment.attachment_file.save('test.txt',ContentFile("hello world"))
attachment.save()
self.assertEqual(str(attachment),'name')
self.assertEqual(unicode(attachment),'name')
self.assertTrue(attachment.directory)
# def test_model_full_fields(self):
# attachment = Attachment()
# attachement.save()
def test_file_operations_basic(self):
root_directory = 'attachments'
filename = 'test.txt'
attachment = Attachment(name='name')
attachment.attachment_file.save(filename,ContentFile('test'))
attachment.save()
upload_location = root_directory + '/' + attachment.directory + '/' + filename
self.assertEqual(upload_to(attachment,filename),upload_location)
self.assertTrue(default_storage.exists(upload_location))
def test_file_operations_delete(self):
root_directory = 'attachments'
filename = 'test.txt'
attachment = Attachment(name='name')
attachment.attachment_file.save(filename,ContentFile('test'))
attachment.save()
upload_location = upload_to(attachment,filename)
attachment.delete()
self.assertFalse(default_storage.exists(upload_location))
def test_file_operations_change(self):
root_directory = 'attachments'
filename_1 = 'test_1.txt'
attachment = Attachment(name='name')
attachment.attachment_file.save(filename_1,ContentFile('test'))
attachment.save()
upload_location_1 = upload_to(attachment,filename_1)
self.assertTrue(default_storage.exists(upload_location_1))
filename_2 = 'test_2.txt'
attachment.attachment_file.save(filename_2,ContentFile('test'))
attachment.save()
upload_location_2 = upload_to(attachment,filename_2)
self.assertTrue(default_storage.exists(upload_location_2))
self.assertFalse(default_storage.exists(upload_location_1))