use Django2.1.4 to do web single page application (Python3.7.1) for the first time. Models.py uses models.IntegerField () to define orm mapping, mysql database version 8.0.12-winx64, using INT type field. When the field is non-zero , the result can be queried normally. When the field value is 00:00, the result can be queried normally. No matter using ORMQuerySet or native SQL (RawQuerySet, cursor), the result of querying 0 value is None. It is suspected that IntegerField () treats 0 value as False. When you use models.CharField (), you can query the "0" value normally when you change the database field from INT to VARCHAR. I would like to ask you if there is a way to crack it. Thank you so much!
-sharp
def querylist(request):
qs = ExcelView.objects.get(case_no="20191090500344")
print("qs-----------------------------")
print(type(qs))
print(qs.case_no, qs.payment_amount, qs.current_added_score, qs.current_total_score)
print("rqs----------------------------")
rqs = ExcelView.objects.raw("select * from caseinfo_excelview where ``=20191090500344")
print(type(rqs))
for v in rqs:
print(v.case_no, v.payment_amount, v.current_added_score, v.current_total_score)
print("cursor-------------------------")
cursor = connection.cursor()
cursor.execute("select * from caseinfo_excelview where ``=20191090500344")
raw = cursor.fetchone()
print(type(raw))
print(raw)
return render(request, "querylist.html", {})-sharp -*- coding: UTF-8 -*-
from django.db import models
-sharp Create your models here.
class ExcelView(models.Model):
case_no = models.CharField(db_column="", max_length=20, primary_key=True) -sharp
amount_of_penalty = models.IntegerField(db_column="()", default=0) -sharp ()
amount_receivable = models.IntegerField(db_column="()", default=0) -sharp ()
payment_amount = models.IntegerField(db_column="", default=0) -sharp
current_added_score = models.IntegerField(db_column="", default=0) -sharp
current_total_score = models.IntegerField(db_column="", default=0) -sharp
def __str__(self):
return self.case_no
def __unicode__(self): -sharp __str__ on Python 3
return self.case_no
-sharp def __next__(self):
-sharp return [field.value_to_string(self) for field in ExcelView._meta.fields]
-sharp def __iter__(self):
-sharp return self
class Meta:
db_table = "caseinfo_excelview"
