我编写了以下代码：
def parse_match_data(self, match_data, statistics_data):
data = {"all_advanced_fields_populated": True}
if(match_data["match_hometeam_halftime_score"] == "" or match_data["match_hometeam_halftime_score"] == ""):
data["all_fields_populated"] = False
data["home_fh_goals"] = 0
data["home_sh_goals"] = 0
data["away_fh_goals"] = 0
data["away_sh_goals"] = 0
else:
data["all_fields_populated"] = True
data["home_sh_goals"] = 0 if int(match_data["match_hometeam_score"]) - int(match_data["match_hometeam_halftime_score"]) < 0 else int(match_data["match_hometeam_score"]) - int(match_data["match_hometeam_halftime_score"])
data["away_sh_goals"] = 0 if int(match_data["match_awayteam_score"]) - int(match_data["match_awayteam_halftime_score"]) < 0 else int(match_data["match_awayteam_score"]) - int(match_data["match_awayteam_halftime_score"])
data["home_fh_goals"] = int(match_data["match_hometeam_halftime_score"])
data["away_fh_goals"] = int(match_data["match_awayteam_halftime_score"])
required_keys = ["Ball Possession", "Goal Attempts", "Shots on Goal"]
if(statistics_data):
for statistic in statistics_data:
if(statistic["type"] in required_keys):
data["home_" + statistic["type"].lower().replace(" ", "_")] = statistic["home"].strip('%')
data["away_" + statistic["type"].lower().replace(" ", "_")] = statistic["away"].strip('%')
for key in required_keys:
if("home_" + key.lower().replace(" ", "_") not in data):
data["home_" + key.lower().replace(" ", "_")] = 0
data["all_advanced_fields_populated"] = False
if("away_" + key.lower().replace(" ", "_") not in data):
data["away_" + key.lower().replace(" ", "_")] = 0
data["all_advanced_fields_populated"] = False
return data
def statistics(self, match, fixtures, type):
for fixture in fixtures:
existing_fixture = Fixture.objects.filter(external_id=fixture["match_id"])
if(not existing_fixture.exists() or (existing_fixture.exists() and existing_fixture.first().total_goals == 0)):
home_id = fixture["match_hometeam_id"]
away_id = fixture["match_awayteam_id"]
league_id = fixture["league_id"]
country_id = fixture["country_id"]
date = fixture["match_date"] + " " + fixture["match_time"]
home_name = fixture["match_hometeam_name"].split(" (")[0]
away_name = fixture["match_awayteam_name"].split(" (")[0]
league_name = fixture["league_name"]
country_name = fixture["country_name"]
url = "https://apiv2.apifootball.com/?action=get_statistics&match_id={}&APIkey={}".format(fixture["match_id"], self.key)
fixture_statistics = json.loads(requests.get(url).content)[fixture['match_id']]['statistics']
country = Country.create(name=country_name)
league = League.create(name=league_name, country=country)
home_data = json.loads(requests.get("https://apiv2.apifootball.com/?action=get_teams&team_id={}&APIkey={}".format(home_id, self.key)).content)
away_data = json.loads(requests.get("https://apiv2.apifootball.com/?action=get_teams&team_id={}&APIkey={}".format(away_id, self.key)).content)
home = Team.create(name=home_name, league=league, external_id=home_id, image_url=home_data[0]["team_badge"])
away = Team.create(name=away_name, league=league, external_id=away_id, image_url=away_data[0]["team_badge"])
parsed_match_data = self.parse_match_data(fixture, fixture_statistics)
home_sh_goals = parsed_match_data["home_sh_goals"]
away_sh_goals = parsed_match_data["away_sh_goals"]
related_fixture, created = Fixture.objects.filter(external_id=fixture["match_id"]).update_or_create(external_id=fixture["match_id"], home=home, away=away, date=date, league=league, total_goals=fixture["match_awayteam_score"] + fixture["match_hometeam_score"],
total_away_goals=fixture["match_awayteam_score"], total_home_goals=fixture["match_hometeam_score"], total_fh_goals=(parsed_match_data["home_fh_goals"] + parsed_match_data["away_fh_goals"]),
total_sh_goals=home_sh_goals + away_sh_goals, total_home_fh_goals=parsed_match_data["home_fh_goals"], total_home_sh_goals=home_sh_goals,
total_away_sh_goals=away_sh_goals, total_away_fh_goals=parsed_match_data["away_fh_goals"], no_default_values=parsed_match_data["all_fields_populated"], total_attempts_home=parsed_match_data["home_goal_attempts"], total_attempts_away=parsed_match_data["away_goal_attempts"],
total_shots_ot_home=parsed_match_data["home_shots_on_goal"], total_shots_ot_away=parsed_match_data["away_shots_on_goal"], total_possession_home=parsed_match_data["home_ball_possession"], total_possession_away=parsed_match_data["away_ball_possession"],
no_advanced_default_values=parsed_match_data["all_advanced_fields_populated"])
# print(related_fixture)
Related.objects.create(sort=type, from_fixture=match, to_fixture=related_fixture)
else:
Related.objects.create(sort=type, from_fixture=match, to_fixture=existing_fixture.first())
在统计方法中使用update_or_create函数的“创建”部分时似乎很好，但是当它需要“更新”项目时会引发以下错误：
Traceback (most recent call last):
File "manage.py", line 25, in <module>
main()
File "manage.py", line 21, in main
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.7/dist-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.7/dist-packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python3.7/dist-packages/django/core/management/base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python3.7/dist-packages/django/core/management/base.py", line 364, in execute
output = self.handle(*args, **options)
File "/root/Documents/projects/football/sbbetting/management/commands/api-schedule.py", line 150, in handle
self.analyze(fixture)
File "/root/Documents/projects/football/sbbetting/management/commands/api-schedule.py", line 138, in analyze
self.statistics(match, home_fixtures, "Home Overal")
File "/root/Documents/projects/football/sbbetting/management/commands/api-schedule.py", line 92, in statistics
no_advanced_default_values=parsed_match_data["all_advanced_fields_populated"])
File "/usr/local/lib/python3.7/dist-packages/django/db/models/query.py", line 554, in update_or_create
obj = self.select_for_update().get(**kwargs)
File "/usr/local/lib/python3.7/dist-packages/django/db/models/query.py", line 399, in get
clone = self.filter(*args, **kwargs)
File "/usr/local/lib/python3.7/dist-packages/django/db/models/query.py", line 892, in filter
return self._filter_or_exclude(False, *args, **kwargs)
File "/usr/local/lib/python3.7/dist-packages/django/db/models/query.py", line 910, in _filter_or_exclude
clone.query.add_q(Q(*args, **kwargs))
File "/usr/local/lib/python3.7/dist-packages/django/db/models/sql/query.py", line 1290, in add_q
clause, _ = self._add_q(q_object, self.used_aliases)
File "/usr/local/lib/python3.7/dist-packages/django/db/models/sql/query.py", line 1318, in _add_q
split_subq=split_subq, simple_col=simple_col,
File "/usr/local/lib/python3.7/dist-packages/django/db/models/sql/query.py", line 1251, in build_filter
condition = self.build_lookup(lookups, col, value)
File "/usr/local/lib/python3.7/dist-packages/django/db/models/sql/query.py", line 1116, in build_lookup
lookup = lookup_class(lhs, rhs)
File "/usr/local/lib/python3.7/dist-packages/django/db/models/lookups.py", line 20, in __init__
self.rhs = self.get_prep_lookup()
File "/usr/local/lib/python3.7/dist-packages/django/db/models/lookups.py", line 70, in get_prep_lookup
return self.lhs.output_field.get_prep_value(self.rhs)
File "/usr/local/lib/python3.7/dist-packages/django/db/models/fields/__init__.py", line 1819, in get_prep_value
return int(value)
ValueError: invalid literal for int() with base 10: ''
我了解到在创建模型时使用“空白”可能会导致此问题，但我在模型代码中未使用“空白”：
class Fixture(models.Model):
external_id = models.CharField(max_length=200)
home = models.ForeignKey(Team, on_delete=models.CASCADE, related_name="home")
away = models.ForeignKey(Team, on_delete=models.CASCADE, related_name="away")
league = models.ForeignKey(League, on_delete=models.CASCADE)
date = models.DateTimeField()
related_fixtures = models.ManyToManyField('self', blank=True, symmetrical=False, through='Related')
total_goals = models.IntegerField(default=0)
total_fh_goals = models.IntegerField(default=0)
total_sh_goals = models.IntegerField(default=0)
total_home_goals = models.IntegerField(default=0)
total_away_goals = models.IntegerField(default=0)
total_home_fh_goals = models.IntegerField(default=0)
total_home_sh_goals = models.IntegerField(default=0)
total_away_fh_goals = models.IntegerField(default=0)
total_away_sh_goals = models.IntegerField(default=0)
total_attempts_home = models.IntegerField(default=0)
total_attempts_away = models.IntegerField(default=0)
total_shots_ot_home = models.IntegerField(default=0)
total_shots_ot_away = models.IntegerField(default=0)
total_possession_home = models.IntegerField(default=0)
total_possession_away = models.IntegerField(default=0)
no_default_values = models.BooleanField(default=False)
no_advanced_default_values = models.BooleanField(default=False)
updated_at = models.DateTimeField(auto_now=True)
created_at = models.DateTimeField(auto_now_add=True)
答案 0 :(得分：1)
错误ValueError: invalid literal for int() with base 10: ''显然意味着您正在尝试用空值=>''填充一个必填字段（可以是FK）。因此，该字段不是必需字段，可以为空，然后必须在其定义中添加blank=True, null=True
your_field = models.IntegerField(default=0, blank=True, null=True)
your_FK_field = models.ForeignKey(TheOtherModel, blank=True, null=True)
或此字段为必填字段，并且必须具有整数值，在这种情况下，您必须确保该值是有效的Integer。
在两种情况下，最好将以下值打印出来以查看哪个值为空：
home_id = fixture["match_hometeam_id"]
away_id = fixture["match_awayteam_id"]
league_id = fixture["league_id"]
country_id = fixture["country_id"]
date = fixture["match_date"] + " " + fixture["match_time"]
home_name = fixture["match_hometeam_name"].split(" (")[0]
away_name = fixture["match_awayteam_name"].split(" (")[0]
league_name = fixture["league_name"]
country_name = fixture["country_name"]