I'm not sure how to go about displaying the fields for the foreign key relationships in a form. I know in a view you can use document.code_set (for example) to access the related objects for the currentdocumentobject, but I'm not sure how to apply this to a ModelForm. My model: ...
We should allow sharing fields between composite foreign keys. For example, in a multi-tenant app where each model has a CompositePrimaryKey("tenant_id", "id"), the tenant_id field should be shared between composite foreign keys. Let me know what you think about this, I'm happy to cons...
1.迁移先需要失败一次(既然出现了这个错误,说明已经迁移了一次) 2.修改当前表外键字段的字符集(或者说COLLATE),修改为外键关联表的字符集 查看表的创建语句(主要是查看外键关联表主键的字符集) SHOWCREATETABLE`user_group` (查看创建表的命令) 修改字符集 ALTERTABLEuser_group_info MODIFY employee_idVARCHAR(30)...
概述:Admin autocomplete field doesn't support the 'to_field' on Foreign Keys→Add ModelAdmin.autocomplete_fields support for ForeignKeys that use to_field I think the correct solution is to modifyAutocompleteJsonViewto return theto_fieldvalue instead of the primary key. To prevent improper data ...
但是默认的mysql排序规则是latin1，而导入的db是utf8。因此，django在旧表和新创建的表之间存在冲突。所...
今天在数据迁移的时候,一直报错 Cannot add foreign key constraint 产生这个错误的多数原因有以下几点: 1,两张表里要设主键和外键的字段的数据类型或者数据长度不一样 (例如这个是int 另外一个是tinyint,或者都是int,但是设置的长度不同) 2,某个表里已经有记录了 ...
django:1215对只有一个字段的模型“cannot add foreign key constraint”通常情况下，这是由于两个相关的...
This new version requires django-filer. When I run the migrations, the initial migration generates an error: (0.667) ALTER TABLE `filer_folder` ADD CONSTRAINT `filer_folder_owner_id_be530fb4_fk_auth_user_id` FOREIGN KEY (`owner_id`) REFERENCES `auth_user` (`id`); args=[] Traceback ...
如果在使用Django Admin后台添加用户时出现报错: django.db.utils.IntegrityError: (1452, 'Cannot add or update a child row: a foreign key constraint fails (`mxonline`.`django_admin_log`, CONSTRAINT `django_admin_log_user_id_c564eba6_fk_auth_user_id` FOREIGN KEY (`user_id`) REFERENCES `auth...
self.render_model_class(mod) def render_model_class(self, mod): self.write(f'class {mod.name}(models.Model):') self.indent() if '.' not in mod.table: # This is only valid for regular objects, not link tables. self.write(f"id = GelUUIDField(primary_key=True)") self.write(f"...