我想通过重新上传更改的CSV文件来更新Django SQLite3数据库。
这是我的const dog = {
age: 5,
growOneYear: function () {
this.age += 1;
}
};
dog.growOneYear();
console.log(dog.age); // 6
function invokeTwice(cb) {
cb();
cb();
}
// Bind the method to the desired object
// Inside `invokeTwice()`, `cb` is the function `dog.growOneYear` with
// `this` pointing to `dog` ------+
// v
invokeTwice(dog.growOneYear.bind(dog));
console.log(dog.age); // 8
models.py我的class CSV_File8(models.Model):
gebäudebereich = models.CharField(max_length=100)
gebäudenr = models.CharField(max_length=100)
ebene = models.CharField(max_length=100)
raum = models.CharField(max_length=100)
dose = models.CharField(max_length=100)
switch_ip = models.CharField(max_length=100)
switch_port = models.CharField(max_length=100)
datum = models.CharField(max_length=100)
akteur = models.CharField(max_length=100)
class Meta:
unique_together = (("gebäudebereich", "gebäudenr", "ebene", "raum", "dose"), ("switch_ip", "switch_port", "datum", "akteur"))
views.py我收到错误消息class UploadFileForm(forms.Form):
file = forms.FileField()
def import_csv(request):
if request.method == "POST":
with open('C:/Users/admin/Desktop/djangoexcel/b.csv') as file:
reader = csv.reader(file)
id = 0
for row in reader:
id += 1
# _, p = CSV_File8.objects.get_or_create(id = id,
# gebäudebereich=row[0], gebäudenr=row[1], ebene=row[2], raum=row[3], dose=row[4],
# switch_ip=row[5], switch_port=row[6], datum=row[7], akteur=row[8]
# )
ds1 = CSV_File8.objects.filter(id = id,
gebäudebereich=row[0], gebäudenr=row[1], ebene=row[2], raum=row[3], dose=row[4]
).values().exists()
ds2 = CSV_File8.objects.filter(id = id,
switch_ip=row[5], switch_port=row[6], datum=row[7], akteur=row[8]
).values().exists()
if ds1 and id == id:
pass
if ds2 and id == id:
pass
if ds1 == False and id == id:
_, ds1 = CSV_File8.objects.values().update(id = id,
gebäudebereich=row[0], gebäudenr=row[1], ebene=row[2], raum=row[3], dose=row[4]
)
if ds2 == False and id == id:
_, ds2 = CSV_File8.objects.values().update(id = id,
switch_ip=row[5], switch_port=row[6], datum=row[7], akteur=row[8]
)
if ds1 and ds2 == False and id != id:
_, ds2 = CSV_File8.objects.values().update(id=id,
switch_ip=row[5], switch_port=row[6], datum=row[7], akteur=row[8]
)
return redirect('documents:index')
# wert = CSV_File3.objects.values_list('dose')
# for i in wert:
# if wert[i] == wert[i + 1]:
# #return render(request, 'documents/replace_entry.html', {'p' : p})
# return replace_entry(request, p)
form = UploadFileForm()
return render(
request, "documents/csv_upload.html", {"form": form}
)
。在这种情况下，我更改了CSV文件的第3行，并且ds1为False，这是正确的。现在，它应该只更新值并将其保存到数据库。但是，这给了我错误。我知道这是因为在此特定行中已经有一个唯一值，但是我认为上面的代码通过仅更新值来处理这种情况。如果您需要更多信息，请告诉我。
任何帮助将不胜感激。