{"id":46877,"date":"2020-08-06T14:47:24","date_gmt":"2020-08-06T06:47:24","guid":{"rendered":"http:\/\/www.xyryd.com\/?p=46877"},"modified":"2020-08-06T14:47:25","modified_gmt":"2020-08-06T06:47:25","slug":"django-models%e5%8f%8d%e5%90%91%e5%85%b3%e8%81%94related_name%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/www.xyryd.com\/46877.html","title":{"rendered":"django models\u53cd\u5411\u5173\u8054related_name\u8be6\u89e3"},"content":{"rendered":"\n<p>\u5148\u4e0a\u8868\u7ed3\u6784 models.py \u4ee3\u7801\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class PeojectUser(models.Model):\n    # \u9879\u76ee\u53c2\u4e0e\u8005\n    user = models.ForeignKey(to='UserInfo',on_delete=models.CASCADE)\n    project = models.ForeignKey(to='Project',on_delete=models.CASCADE)\n    star = models.BooleanField(default=False)\n    invitee = models.ForeignKey(to='UserInfo',on_delete=models.CASCADE)\n    create_datetime = models.DateTimeField(auto_now_add=True)<\/code><\/pre>\n\n\n\n<p>\u5728<code>django<\/code>\u00a0\u6267\u884c\u00a0<code>makemigrations<\/code>\u00a0\u7684\u65f6\u5019\uff0c\u5982\u679c\u51fa\u73b0\u4e0b\u9762\u8fd9\u79cd\u9519\u8bef<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SystemCheckError: System check identified some issues:\n\nERRORS:\nweb.PeojectUser.invitee: (fields.E304) Reverse accessor for 'PeojectUser.invitee' clashes with reverse accessor for 'PeojectUser.user'.\n        HINT: Add or change a related_name argument to the definition for 'PeojectUser.invitee' or 'PeojectUser.user'.\nweb.PeojectUser.user: (fields.E304) Reverse accessor for 'PeojectUser.user' clashes with reverse accessor for 'PeojectUser.invitee'.\n        HINT: Add or change a related_name argument to the definition for 'PeojectUser.user' or 'PeojectUser.invitee'.<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u95ee\u9898\u51fa\u73b0\u7684\u539f\u56e0\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u56e0\u4e3a\u6211\u4eec\u6211\u4eec\u5728<code>PeojectUser<\/code> \u9879\u76ee\u4e2d\u67092\u4e2a\u5b57\u6bb5\u90fd\u8fdb\u884c\u4e86\u4e00\u5bf9\u591a\u7684\u5f15\u7528\u4e86<code>UserInfo<\/code> \u8868\uff0c\u8fd9\u6837\u4f1a\u7ed9\u540e\u9762\u8fdb\u884c\u53cd\u5411\u67e5\u8be2\u7684\u65f6\u5019\uff0c\u9020\u6210django\u65e0\u6cd5\u5904\u7406\uff0c\u56e0\u6b64\u63d0\u793a\u662f\u8bf4\u6211\u4eec\u662f\u9700\u8981\u6307\u5b9a<code>related_name<\/code> \u3002<br>\u5148\u8bf4\u4e00\u4e2a\u5e38\u89c4\u7684\u95ee\u9898\uff1a<br>\u6b63\u5e38\u6211\u4eec\u7684\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>obj = UserInfo.objects.get(id=1)\nobj.projectuser_set.all()<\/code><\/pre>\n\n\n\n<p>\u4f46\u662f\u7531\u4e8e\u6211\u4eec\u5728<code>PeojectUser<\/code>\u8bbe\u7f6e\u4e862\u4e2a\u5173\u8054\uff0c\u56e0\u6b64\u5728\u6211\u4eec\u540e\u7eed\u6267\u884c\u7684\u65f6\u5019\uff0cdjango\u4e0d\u77e5\u9053\u9700\u8981\u53cd\u5411\u5173\u8054\u90a3\u4e2a\u5b57\u6bb5\u4e86\u3002\u6240\u4ee5\u63d0\u793a\u6211\u4eec\u6dfb\u52a0 <strong>related_name<\/strong> \u5b57\u6bb5<br>\u9488\u5bf9\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u6211\u4eec\u505a\u4e00\u4e0b\u4fee\u6539\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>```python\nclass PeojectUser(models.Model):\n    # \u9879\u76ee\u53c2\u4e0e\u8005\n    user = models.ForeignKey(to='UserInfo',on_delete=models.CASCADE,related_name='a')\n    project = models.ForeignKey(to='Project',on_delete=models.CASCADE)\n    star = models.BooleanField(default=False)\n    invitee = models.ForeignKey(to='UserInfo',on_delete=models.CASCADE,related_name='b')\n    create_datetime = models.DateTimeField(auto_now_add=True)<\/code><\/pre>\n\n\n\n<p>\u90a3\u4e48\u5728\u8bbe\u7f6e\u4e86\u4e0a\u9762\u7684\u683c\u5f0f\u540e\uff0c\u5982\u679c\u8981\u8fdb\u884c\u4e0d\u540c\u7684\u53cd\u5411\u5173\u8054\uff0c\u5219\u5c31\u53ef\u4ee5 \u4f7f\u7528\u5982\u4e0b\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>obj = UserInfo.objects.get(id=1)\nobj.a.all()\nobj.b.all()<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u4e0a\u8868\u7ed3\u6784 models.py \u4ee3\u7801\u5982\u4e0b \u5728django\u00a0\u6267\u884c\u00a0makemigrations\u00a0\u7684\u65f6\u5019\uff0c\u5982\u679c\u51fa\u73b0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":46299,"comment_status":"open","ping_status":"closed","sticky":false,"template":"single-with-sidebar","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[289,283],"aioseo_notices":[],"_links":{"self":[{"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/posts\/46877"}],"collection":[{"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/comments?post=46877"}],"version-history":[{"count":0,"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/posts\/46877\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/media\/46299"}],"wp:attachment":[{"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/media?parent=46877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/categories?post=46877"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xyryd.com\/wp-json\/wp\/v2\/tags?post=46877"}],"curies":[{"name":"wp","href":"http:\/\/api.w.org\/{rel}","templated":true}]}}