在我的应用程序中，我正在调用 API 以在 models.py 中为 DecimalField 创建选项。
# -*- coding: utf-8 -*-
from django.db import models
import re
from suds.client import Client
from datetime import datetime
from django.utils import timezone
class Allegro:
def __init__(self):
self.webapi_key = 'hidden key'
self.country = 1
self.client = Client('https://webapi.allegro.pl/service.php?wsdl')
self.client.options.cache.setduration(hours=1)
self.starting_time = '24h'
def get_categories(self):
category_list = self.client.service.doGetCatsData(
countryId=self.country,
webapiKey=self.webapi_key
).catsList.item
categories = []
for item in category_list:
categories.append({'id': item.catId, 'name': item.catName, 'parent': item.catParent})
return categories
# search for free only, with time fixed at 24h. User can set phrase and category only.
def search(self, category, phrase):
params = [{
'item': ({'filterId': 'category', 'filterValueId': {'item': category}},
{'filterId': 'startingTime', 'filterValueId': {'item': self.starting_time}},
{'filterId': 'search', 'filterValueId': {'item': phrase}})
}]
search_raw_result = self.client.service.doGetItemsList(
countryId=self.country,
webapiKey=self.webapi_key,
filterOptions=params,
).itemsList.item
search = []
for item in search_raw_result:
search.append({'id': item.itemId, 'name': item.itemTitle,
'type': item.priceInfo.item[0].priceType, 'price': item.priceInfo.item[0].priceValue})
return search
def choices():
choice_prep = Allegro()
choice = choice_prep.get_categories()
choice_list = []
add = "'"
for item in choice:
if item['parent'] == 0:
item_name = add + item['name'] + add
choice_list.append([item['id'], item_name])
return choice_list
class FreeSearch(models.Model):
a = choices()
mail = models.CharField(verbose_name='mail', max_length=100)
phrase = models.CharField(verbose_name='phrase', max_length=150)
category = models.DecimalField(verbose_name='category', max_digits=6, decimal_places=0, choices=a)
end_date = models.DateTimeField(verbose_name="Data końcowa", blank=True)
activation_key = models.CharField(max_length=40, blank=True)
key_expires = models.DateTimeField(default=timezone.now)
def __str__(self):
return '%s, %s, %s' % (self.mail, self.phrase, self.category)
class Meta:
verbose_name = "Wyszukanie"
verbose_name = "Wyszukania"
选择应该是列表列表，其中只有两个值，id 是十进制最大 5 位数字，名称包含 Allegro 拍卖服务中的类别名称。
在 cmd 中调用 python manage.py makemigrations 后会出现以下问题：
C:\Users\Dom\allewatcher>python manage.py makemigrations
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "C:\Python35\lib\site-packages\django\core\management\__init__.py", line
351, in execute_from_command_line
utility.execute()
File "C:\Python35\lib\site-packages\django\core\management\__init__.py", line
343, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Python35\lib\site-packages\django\core\management\base.py", line 394,
in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Python35\lib\site-packages\django\core\management\base.py", line 445,
in execute
output = self.handle(*args, **options)
File "C:\Python35\lib\site-packages\django\core\management\commands\makemigrat
ions.py", line 63, in handle
loader = MigrationLoader(None, ignore_no_migrations=True)
File "C:\Python35\lib\site-packages\django\db\migrations\loader.py", line 47,
in __init__
self.build_graph()
File "C:\Python35\lib\site-packages\django\db\migrations\loader.py", line 176,
in build_graph
self.load_disk()
File "C:\Python35\lib\site-packages\django\db\migrations\loader.py", line 102,
in load_disk
migration_module = import_module("%s.%s" % (module_name, migration_name))
File "C:\Python35\lib\importlib\__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 658, in exec_module
File "<frozen importlib._bootstrap_external>", line 764, in get_code
File "<frozen importlib._bootstrap_external>", line 724, in source_to_code
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "C:\Users\Dom\allewatcher\search\migrations\0001_initial.py", line 20
('category', models.DecimalField(decimal_places=0, max_digits=6, verbose_nam
e='category', choices=[[26013, Antyki i Sztuka], [98553, Bilety], [64477, Biuro
i Reklama], [19732, Biżuteria i Zegarki], [73973, Delikatesy], [11763, Dla Dziec
i], [5, Dom i Ogród], [63757, Erotyka], [20585, Filmy], [8845, Fotografia], [9,
Gry], [122640, Instrumenty], [6, Kolekcje], [2, Komputery], [122233, Konsole i a
utomaty], [7, Książki i Komiksy], [3, Motoryzacja], [1, Muzyka], [20782, Nieruch
omości], [1454, Odzież, Obuwie, Dodatki], [16696, Przemysł], [76593, Rękodzieło]
, [10, RTV i AGD], [3919, Sport i Turystyka], [122332, Sprzęt estradowy, studyjn
y i DJ-ski], [4, Telefony i Akcesoria], [1429, Uroda], [55067, Wakacje], [121882
, Zdrowie]])),
^
SyntaxError: invalid syntax
我也不知道为什么在错误描述中选择函数中的添加变量没有添加引号。
# -*- coding: utf-8 -*-
从未来导入 unicode_literals
从 django.db 导入迁移，模型导入 django.utils.timezone
类迁移（migrations.Migration）：
dependencies = [
]
operations = [
migrations.CreateModel(
name='FreeSearch',
fields=[
('id', models.AutoField(auto_created=True, verbose_name='ID', primary_key=True, serialize=False)),
('mail', models.CharField(max_length=100, verbose_name='mail')),
('phrase', models.CharField(max_length=150, verbose_name='phrase')),
('category', models.DecimalField(decimal_places=0, max_digits=6, verbose_name='category', choices=[[26013, Antyki i Sztuka], [98553, Bilety], [64477, Biuro i Reklama], [19732, Biżuteria i Zegarki], [73973, Delikatesy], [11763, Dla Dzieci], [5, Dom i Ogród], [63757, Erotyka], [20585, Filmy], [8845, Fotografia], [9, Gry], [122640, Instrumenty], [6, Kolekcje], [2, Komputery], [122233, Konsole i automaty], [7, Książki i Komiksy], [3, Motoryzacja], [1, Muzyka], [20782, Nieruchomości], [1454, Odzież, Obuwie, Dodatki], [16696, Przemysł], [76593, Rękodzieło], [10, RTV i AGD], [3919, Sport i Turystyka], [122332, Sprzęt estradowy, studyjny i DJ-ski], [4, Telefony i Akcesoria], [1429, Uroda], [55067, Wakacje], [121882, Zdrowie]])),
('end_date', models.DateTimeField(blank=True, verbose_name='Data końcowa')),
('activation_key', models.CharField(max_length=40, blank=True)),
('key_expires', models.DateTimeField(default=django.utils.timezone.now)),
],
options={
'verbose_name': 'Wyszukania',
},
),
]