我為我的項(xiàng)目模型創(chuàng)建了一個(gè)函數(shù)，其中有根據(jù)用戶名和項(xiàng)目標(biāo)題上傳的圖像?，F(xiàn)在我正在嘗試向該項(xiàng)目添加更多圖像并且圖像有一個(gè)外鍵，但現(xiàn)在我不是隨機(jī)創(chuàng)建將新圖像上傳到另一個(gè)文件夾，而是想將這些圖像上傳到之前根據(jù)確定的相同文件夾到同一個(gè)項(xiàng)目。我試圖改變以前的函數(shù)，但它返回了一個(gè)錯(cuò)誤，upload_design_to() takes 1 positional argument but 2 were given我認(rèn)為是因?yàn)槲覜]有添加self到函數(shù)中，但我不知道用什么替換它。下面的函數(shù)將更具描述性：這是根據(jù)用戶名和項(xiàng)目標(biāo)題將圖像上傳到某個(gè)位置的模型和功能：class Item(models.Model): def upload_design_to(self, filename): return f'{self.designer}/{self.title}/{filename}' designer = models.ForeignKey( User, on_delete=models.CASCADE) title = models.CharField(max_length=100) image = models.ImageField(blank=False, upload_to=upload_design_to)現(xiàn)在我創(chuàng)建了一個(gè)新的圖像模型來向該項(xiàng)目添加更多圖像并希望將它們上傳到同一個(gè)文件夾class Images(models.Model): def upload_design_to(filename): return f'{Item.designer}/{Item.title}/{filename}' item = models.ForeignKey(Item, on_delete=models.CASCADE) name = models.CharField(max_length=50, blank=True) image = models.ImageField(blank=True, upload_to=upload_design_to) def __str__(self): return self.name
2 回答
qq_笑_17
TA貢獻(xiàn)1818條經(jīng)驗(yàn) 獲得超7個(gè)贊
您不重復(fù)自己的解決方案是調(diào)用upload_design_to相關(guān)的Item
class Images(models.Model):
def upload_design_to(self, filename):
return self.item.upload_design_to(filename)
item = models.ForeignKey(Item, on_delete=models.CASCADE)
name = models.CharField(max_length=50, blank=True)
image = models.ImageField(blank=False, upload_to=upload_design_to)
喵喔喔
TA貢獻(xiàn)1735條經(jīng)驗(yàn) 獲得超5個(gè)贊
class Images(models.Model):
? ? def upload_design_to(self, filename):
? ? ? ? return f'{self.item.designer}/{self.item.title}/{filename}'
? ? item = models.ForeignKey(Item, on_delete=models.CASCADE)
? ? name = models.CharField(max_length=50, blank=True)
? ? image = models.ImageField(blank=True, upload_to=upload_design_to)
? ? def __str__(self):
? ? ? ? return self.name
關(guān)于您提出的錯(cuò)誤，您還可以為max_length文件字段設(shè)置一個(gè)屬性，這樣它就不會(huì)超過文件限制。您可以將其設(shè)置為 10000000 或足以容納您的文件的長(zhǎng)度。
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