What is wrong with my models.py?
在django下,对于一个与之前版本的python和django一起工作的项目(阅读:这可能是一个移植问题),我得到:
1 2 | CommandError: One or more models did not validate: directory.phone: Reverse query name for field 'entity' clashes with field 'Entity.phone'. Add a related_name argument to the definition for 'entity'. |
我需要做什么?my models.py文件如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 | #!/usr/bin/python # coding = UTF-8 from django.contrib import admin from django.contrib.contenttypes import generic from django.contrib.contenttypes.models import ContentType from django.core.exceptions import ValidationError from django.db import models import datetime import directory import django.forms import re OFFICE_CHOICES = ( (u'CN', u'Chicago North Office, Illinois, USA'), (u'CS', u'Chicago South Office, Illinois, USA'), (u'WH', u'Wheaton Office, Illinois, USA'), (u'SY', u'Sydney Office, New South Wales, Australia'), ) EDIT_CHOICES = ( (u'a', u'Foreign key relationship changed.'), (u'b', u'Image changed.'), (u'c', u'Instance created.'), (u'd', u'Instance deleted.'), (u'e', u'Many to many relationship added.'), (u'f', u'Many to many relationship deleted.'), (u'g', u'One to many relationship added.'), (u'h', u'One to many relationship deleted.'), (u'i', u'Text changed.'), ) TIME_ZONE_CHOICES = ( (None,"Select"), ("1.0","A: Paris, +1:00"), ("2.0","B: Athens, +2:00"), ("3.0","C: Moscow, +3:00"), ("4.0","D: Dubai, +4:00"), ("4.5","-: Kabul, +4:30"), ("5.0","E: Karachi, +5:00"), ("5.5","-: New Delhi, +5:30"), ("5.75","-: Kathmandu, :5:45"), ("6.0","F: Dhaka, +6:00"), ("6.5","-: Rangoon, +6:30"), ("7.0","G: Jakarta, +7:00"), ("8.0","H: Kuala Lumpur, +8:00"), ("9.0","I: Tokyo, +9:00"), ("9.5","-: Adelaide, +9:30"), ("10.0","K: Sydney, +10:00"), ("10.5","-: Lord Howe Island, +10:30"), ("11.0","L: Solomon Islands, +11:00"), ("11.5","-: Norfolk Island, +11:50"), ("12.0","M: Auckland, +12:00"), ("12.75","-: Chatham Islands, +12:45"), ("13.0","-: Tonga, +13:00"), ("14.0","-: Line Islands, +14:00"), ("-1.0","N: Azores, -1:00"), ("-2.0","O: Fernando de Norohna, -2:00"), ("-3.0","P: Rio de Janiero, -3:00"), ("-3.5","-: St. John's, -3:50"), ("-4.0","Q: Santiago, -4:00"), ("-4.5","-: Caracas, -4:30"), ("-5.0","R: New York City, -5:00"), ("-6.0","S: Chicago, -6:00"), ("-7.0","T: Boulder, -7:00"), ("-8.0","U: Los Angeles, -8:00"), ("-9.0","V: Anchorage, -9:00"), ("-9.5","-: Marquesas Islands, -9:30"), ("-10.0","W: Hawaii, -10:00"), ("-11.0","X: Samoa, -11:00"), ("-12.0","Y: Baker Island, -12:00"), ("0.0","Z: London, +0:00"), ) FOREIGN_KEY_RELATIONSHIP_CHANGED = u'a' IMAGE_CHANGED = u'b' INSTANCE_CREATED = u'c' INSTANCE_DELETED = u'd' MANY_TO_MANY_RELATIONSHIP_ADDED = u'e' MANY_TO_MANY_RELATIONSHIP_DELETED = u'f' MANY_TO_ONE_RELATIONSHIP_ADDED = u'g' MANY_TO_ONE_RELATIONSHIP_DELETED = u'h' TEXT_CHANGED = u'i' class EditTrail(models.Model): change_set = models.IntegerField() change_type = models.CharField(max_length = 1, choices = EDIT_CHOICES) content_object = generic.GenericForeignKey(u'content_type', u'object_id') content_type = models.ForeignKey(ContentType) field_name = models.TextField(null = True, blank = True) foreign_key_added = generic.GenericForeignKey() foreign_key_deleted = generic.GenericForeignKey() in_effect = models.BooleanField() instance = generic.GenericForeignKey() ip = models.IPAddressField() object_id = models.PositiveIntegerField() session = models.TextField(null = True, blank = True) text_after = models.TextField(null = True, blank = True) text_before = models.TextField(null = True, blank = True) timestamp = models.DateTimeField(default = datetime.datetime.now, blank = True) username = models.TextField(null = True, blank = True) def format_timestamp(self): return directory.functions.format_timestamp(self.timestamp) class ExtensionField(models.TextField): def __init__(self, *arguments, **keywords): models.TextField.__init__(self, *arguments, **keywords) def gps_validator(value): # Create a normalized working copy of the value. working_copy = value working_copy = working_copy.replace(u' ', u',') working_copy = working_copy.replace(u' ', u',') working_copy = re.sub(ur',*$', '', working_copy) working_copy = re.sub(ur',+', u',', working_copy) if not u',' in working_copy and not \ re.match(ur'.* .* .*', working_copy): working_copy = working_copy.replace(u' ', u',') working_copy = re.sub(u'[\00B0\2018\2019\201C\201D\'"]', ' ', working_copy) working_copy = working_copy.replace(u',', u', ') working_copy = re.sub(ur'\s+', u' ', working_copy) working_copy = working_copy.strip() working_copy = working_copy.upper() # Test the normalized working copy against regular expressions for different kinds of GPS format. if re.match(ur'[-NS]? ?\d{1,3} [0-5]\d [0-5]\d(\.\d+)[NS]?, [-EW]? ?\d{1,3} [0-5]\d [0-5]\d(\.\d+)[EW]?', working_copy): return working_copy elif re.match(ur'[-NS]? ?\d{1,3} [0-5]\d(\.\d+)[NS]?, [-EW]? ?\d{1,3} [0-5]\d(\.\d+)[EW]?', working_copy): return working_copy elif re.match(ur'[-NS]? ?\d{1,3}(\.\d+)[NS]?, [-EW]? ?\d{1,3}(\.\d+)[EW]?', working_copy): return working_copy else: raise ValidationError(u'We could not recognize this as a valid GPS coordinate.') class GPSField(models.TextField): default_error_messages = { u'invalid': u'We could not recognize this as a valid GPS coordinate.', } default_validators = [gps_validator] class Increment(models.Model): pass class Location(models.Model): identifier = models.TextField(blank = True) description = models.TextField(blank = True) office = models.CharField(max_length=2, choices=OFFICE_CHOICES, blank = True) postal_address = models.TextField(blank = True) room = models.TextField(blank = True) coordinates = GPSField(blank = True) class TextURLField(models.URLField): def __init__(self, *arguments, **keywords): models.URLField.__init__(self, *arguments, **keywords) def get_internal_type(self): return u'TextField' # This class is basically the"Person" class; however, it is called"Entity" # to emphasize that it is intended to accommodate people, offices, # organizational units, and possibly other areas. class Entity(models.Model): active = models.BooleanField(blank = True) department = models.ForeignKey(u'self', blank = True, null = True, related_name = u'member') description = models.TextField(blank = True) gps = GPSField() image_mimetype = models.TextField(blank = True, null = True) is_invisible = models.BooleanField(default = False) location = models.ForeignKey(u'self', blank = True, null = True, related_name = u'occupant') name = models.TextField(blank = True, default = directory.settings.PLACEHOLDER_NAME) observes_daylight_saving_time = models.BooleanField(blank = True, default = True) other_contact = models.TextField(blank = True) postal_address = models.TextField(blank = True) publish_externally = models.BooleanField(blank = True) reports_to = models.ForeignKey(u'self', blank = True, null = True, related_name = u'subordinate') start_date = models.DateField(blank = True, null = True) time_zone = models.CharField(max_length = 5, null = True, choices = TIME_ZONE_CHOICES) title = models.TextField(blank = True) class Meta: permissions = ( ("view_changelog","View the editing changelog"), ) class Tag(models.Model): entity = models.ForeignKey(Entity) is_invisible = models.BooleanField(default = False) text = models.TextField(blank = True) def __eq__(self, other): try: return self.text == other.text except: return False class TextEmailField(models.EmailField): #entity = models.ForeignKey(Entity) def __init__(self, *arguments, **keywords): models.EmailField.__init__(self, *arguments, **keywords) def get_internal_type(self): return u'TextField' class Email(models.Model): email = TextEmailField() entity = models.ForeignKey(Entity) is_invisible = models.BooleanField(default = False) class URL(models.Model): entity = models.ForeignKey(Entity) url = TextURLField() is_invisible = models.BooleanField(default = False) class Phone(models.Model): description = models.TextField(blank = True, null = True) entity = models.ForeignKey(Entity, blank = True) is_invisible = models.BooleanField(default = False) number = models.TextField(blank = True) def __eq__(self, other): try: return self.remove_formatting() == other.remove_formatting() except: return False def remove_formatting(self): return re.sub(ur'\D', u'', str(self)) class Status(models.Model): datetime = models.DateTimeField(default = datetime.datetime.now, blank = True) entity = models.ForeignKey(Entity, blank = True) is_invisible = models.BooleanField(default = False) text = models.TextField(blank = True) username = models.TextField(blank = True) def format_timestamp(self): return directory.functions.format_timestamp(self.datetime) class EntityForm(django.forms.ModelForm): class Meta: model = Entity fields = (u'name', u'description', u'phone', u'department', u'postal_address', u'reports_to', u'active', u'publish_externally') class LocationForm(django.forms.ModelForm): class Meta: model = Location |
在
1 | related_name ="entity_phone" |
Django在模型中自动建立反向关系,有时它选择的名称与其他现有的相关名称冲突。因此,您可以显式设置这些名称,这样它们就不会发生冲突。
在您的手机型号中
1 2 | class Phone(models.Model): entity = models.ForeignKey(Entity, blank = True, related_name="someName") |