Django Admin:自定义字段子类JSONField上的对象不是JSON可序列化错误
我正试图通过将某些对象存储在JSONFields中来反规范化Django Postgres数据库，该数据库支持JSON API： 我扩展了django.contrib.postgres.fields.JSONField字段，以自动将数据序列化为Python对象。我这样做是为了围绕对象封装我的逻辑，并强制执行存储在JSONField中的对象的结构。以下是关于自定义模型字段的Django文档： 我可以将我的对象存储在自定义JSONField中，并可以将它们作为本机Python对象检索，但是，我已经破坏了管理控制台。当我试图查看我的一个对象时，出现以下错误：Django Admin:自定义字段子类JSONField上的对象不是JSON可序列化错误,django,django-models,django-admin,Django,Django Models,Django Admin,我正试图通过将某些对象存储在JSONFields中来反规范化Django Postgres数据库，该数据库支持JSON API： 我扩展了django.contrib.postgres.fields.JSONField字段，以自动将数据序列化为Python对象。我这样做是为了围绕对象封装我的逻辑，并强制执行存储在JSONField中的对象的结构。以下是关于自定义模型字段的Django文档： 我可以将我的对象存储在自定义JSONField中，并可以将它们作为本机Python对象检索，但是，我已
TypeError: <core.fields.PostalAddress object at 0x7fdcfaade4e0> is not JSON serializable
from django.db import models
from .fields import PostalAddressField, get_empty_address
class Person(models.Model):
shipping_address = PostalAddressField(default = get_empty_address)
Request Method: GET
Request URL:...
Django Version: 1.11.6
Python Version: 3.5.2
Installed Applications:
['grappelli',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.postgres',
'rest_framework',
'rest_framework.authtoken',...
]
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Template error:
In template /home/ubuntu/venv/lib/python3.5/site-packages/grappelli/templates/admin/includes/fieldset.html, error at line 24
<core.fields.PostalAddress object at 0x7f2c7fc085f8> is not JSON serializable 14 : {% if field.is_checkbox %}
15 : <div class="c-1"> </div>
16 : <div class="c-2">
17 : {{ field.field }}{{ field.label_tag|prettylabel }}
18 : {% else %}
19 : <div class="c-1">{{ field.label_tag|prettylabel }}</div>
20 : <div class="c-2">
21 : {% if field.is_readonly %}
22 : <div class="grp-readonly">{{ field.contents }}</div>
23 : {% else %}
24 : {{ field.field }}
25 : {% endif %}
26 : {% endif %}
27 : {% if line.fields|length_is:'1' %}{{ line.errors }}{% endif %}
28 : {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.field.errors }}{% endif %}
29 : {% if field.field.help_text %}
30 : <p class="grp-help">{{ field.field.help_text|safe }}</p>
31 : {% endif %}
32 : </div>
33 : </div>
34 : {% endfor %}
Traceback:
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/core/handlers/exception.py" in inner
41. response = get_response(request)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/core/handlers/base.py" in _get_response
217. response = self.process_exception_by_middleware(e, request)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/core/handlers/base.py" in _get_response
215. response = response.render()
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/response.py" in render
107. self.content = self.rendered_content
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/response.py" in rendered_content
84. content = template.render(context, self._request)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/backends/django.py" in render
66. return self.template.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
207. return self._render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
177. return compiled_parent._render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
177. return compiled_parent._render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
72. result = block.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
72. result = block.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
216. nodelist.append(node.render_annotated(context))
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
216. return template.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
209. return self._render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
411. return strip_spaces_between_tags(self.nodelist.render(context).strip())
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
216. nodelist.append(node.render_annotated(context))
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
216. nodelist.append(node.render_annotated(context))
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
322. return nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
322. return nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
1046. return render_value_in_context(output, context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_value_in_context
1024. value = force_text(value)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/utils/encoding.py" in force_text
76. s = six.text_type(s)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/utils/html.py" in <lambda>
385. klass.__str__ = lambda self: mark_safe(klass_str(self))
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/forms/boundfield.py" in __str__
40. return self.as_widget() + self.as_hidden(only_initial=True)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/forms/boundfield.py" in as_widget
125. value=self.value(),
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/forms/boundfield.py" in value
162. return self.field.prepare_value(data)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/contrib/postgres/forms/jsonb.py" in prepare_value
55. return json.dumps(value)
File "/usr/lib/python3.5/json/__init__.py" in dumps
230. return _default_encoder.encode(obj)
File "/usr/lib/python3.5/json/encoder.py" in encode
198. chunks = self.iterencode(o, _one_shot=True)
File "/usr/lib/python3.5/json/encoder.py" in iterencode
256. return _iterencode(o, 0)
File "/usr/lib/python3.5/json/encoder.py" in default
179. raise TypeError(repr(o) + " is not JSON serializable")
Exception Type: TypeError at /admin/...
Exception Value: <core.fields.PostalAddress object at 0x7f2c7fc085f8> is not JSON serializable
请求方法：获取
请求URL:。。。
Django版本：1.11.6
Python版本：3.5.2
已安装的应用程序：
['grappelli'，
“django.contrib.admin”，
“django.contrib.auth”，
“django.contrib.contenttypes”，
“django.contrib.sessions”，
“django.contrib.messages”，
“django.contrib.staticfiles”，
“django.contrib.postgres”，
“rest_框架”，
“rest_framework.authtoken”，。。。
]
已安装的中间件：
['django.middleware.security.SecurityMiddleware'，
“django.contrib.sessions.middleware.SessionMiddleware”，
'django.middleware.common.CommonMiddleware'，
“django.middleware.csrf.CsrfViewMiddleware”，
'django.contrib.auth.middleware.AuthenticationMiddleware'，
'django.contrib.messages.middleware.MessageMiddleware'，
'django.middleware.clickjacking.xframeoptions中间件']
模板错误：
在template/home/ubuntu/venv/lib/python3.5/site-packages/grappelli/templates/admin/includes/fieldset.html中，第24行出现错误
JSON不可序列化14:{%if field.is_checkbox%}
15 :
16 :
17:{{field.field}{{field.label|tag|prettylabel}
18:{%else%}
19:{{field.label_tag}prettylabel}
20 :
21:{%if field.is_readonly%}
22:{field.contents}
23:{%else%}
24:{field.field}
25:{%endif%}
26:{%endif%}
27:{%if line.fields |长度_为：'1'%}{{line.errors}}{%endif%}
28:{%if not line.fields|length_是：'1'而不是field.is_readonly%}{{field.field.errors}{%endif%}
29:{%if-field.field.help_text%}
30:{{field.field.help_text | safe}
31:{%endif%}
32 :
33 :
34:{%endfor%}
回溯：
文件“/home/ubuntu/venv/lib/python3.5/site packages/django/core/handlers/exception.py”
41响应=获取响应（请求）
文件“/home/ubuntu/venv/lib/python3.5/site-packages/django/core/handlers/base.py”中的
217response=self.process\u异常\u由\u中间件（e，请求）
文件“/home/ubuntu/venv/lib/python3.5/site-packages/django/core/handlers/base.py”中的
215response=response.render（）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/response.py”
107self.content=自渲染内容
呈现内容中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/response.py”
84content=template.render（上下文、self.\u请求）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/backends/django.py”
66返回self.template.render（上下文）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
207返回self.\u呈现（上下文）
文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
199返回self.nodelist.render（上下文）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
990位=节点。带注释的渲染（上下文）
render_注释中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
957返回self.render（上下文）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/loader_tags.py”
177返回编译的\u父对象。\u呈现（上下文）
文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
199返回self.nodelist.render（上下文）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
990位=节点。带注释的渲染（上下文）
render_注释中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
957返回self.render（上下文）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/loader_tags.py”
177返回编译的\u父对象。\u呈现（上下文）
文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
199返回self.nodelist.render（上下文）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
990位=节点。带注释的渲染（上下文）
render_注释中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
957返回self.render（上下文）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/loader_tags.py”
72结果=block.nodelist.render（上下文）
render中的文件“/home/ubuntu/venv/lib/python3.5/site packages/django/template/base.py”
990位=节点。带注释的渲染（上下文
Request Method: GET
Request URL:...
Django Version: 1.11.6
Python Version: 3.5.2
Installed Applications:
['grappelli',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.postgres',
'rest_framework',
'rest_framework.authtoken',...
]
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Template error:
In template /home/ubuntu/venv/lib/python3.5/site-packages/grappelli/templates/admin/includes/fieldset.html, error at line 24
<core.fields.PostalAddress object at 0x7f2c7fc085f8> is not JSON serializable 14 : {% if field.is_checkbox %}
15 : <div class="c-1"> </div>
16 : <div class="c-2">
17 : {{ field.field }}{{ field.label_tag|prettylabel }}
18 : {% else %}
19 : <div class="c-1">{{ field.label_tag|prettylabel }}</div>
20 : <div class="c-2">
21 : {% if field.is_readonly %}
22 : <div class="grp-readonly">{{ field.contents }}</div>
23 : {% else %}
24 : {{ field.field }}
25 : {% endif %}
26 : {% endif %}
27 : {% if line.fields|length_is:'1' %}{{ line.errors }}{% endif %}
28 : {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.field.errors }}{% endif %}
29 : {% if field.field.help_text %}
30 : <p class="grp-help">{{ field.field.help_text|safe }}</p>
31 : {% endif %}
32 : </div>
33 : </div>
34 : {% endfor %}
Traceback:
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/core/handlers/exception.py" in inner
41. response = get_response(request)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/core/handlers/base.py" in _get_response
217. response = self.process_exception_by_middleware(e, request)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/core/handlers/base.py" in _get_response
215. response = response.render()
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/response.py" in render
107. self.content = self.rendered_content
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/response.py" in rendered_content
84. content = template.render(context, self._request)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/backends/django.py" in render
66. return self.template.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
207. return self._render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
177. return compiled_parent._render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
177. return compiled_parent._render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
72. result = block.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
72. result = block.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
216. nodelist.append(node.render_annotated(context))
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/loader_tags.py" in render
216. return template.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
209. return self._render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
411. return strip_spaces_between_tags(self.nodelist.render(context).strip())
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
216. nodelist.append(node.render_annotated(context))
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
216. nodelist.append(node.render_annotated(context))
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
322. return nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/defaulttags.py" in render
322. return nodelist.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
990. bit = node.render_annotated(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_annotated
957. return self.render(context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render
1046. return render_value_in_context(output, context)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/template/base.py" in render_value_in_context
1024. value = force_text(value)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/utils/encoding.py" in force_text
76. s = six.text_type(s)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/utils/html.py" in <lambda>
385. klass.__str__ = lambda self: mark_safe(klass_str(self))
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/forms/boundfield.py" in __str__
40. return self.as_widget() + self.as_hidden(only_initial=True)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/forms/boundfield.py" in as_widget
125. value=self.value(),
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/forms/boundfield.py" in value
162. return self.field.prepare_value(data)
File "/home/ubuntu/venv/lib/python3.5/site-packages/django/contrib/postgres/forms/jsonb.py" in prepare_value
55. return json.dumps(value)
File "/usr/lib/python3.5/json/__init__.py" in dumps
230. return _default_encoder.encode(obj)
File "/usr/lib/python3.5/json/encoder.py" in encode
198. chunks = self.iterencode(o, _one_shot=True)
File "/usr/lib/python3.5/json/encoder.py" in iterencode
256. return _iterencode(o, 0)
File "/usr/lib/python3.5/json/encoder.py" in default
179. raise TypeError(repr(o) + " is not JSON serializable")
Exception Type: TypeError at /admin/...
Exception Value: <core.fields.PostalAddress object at 0x7f2c7fc085f8> is not JSON serializable
from django.contrib.postgres.forms import JSONField
# Define a new form field
class PostalAddressJSONField(JSONField):
def prepare_value(self, value):
# Here, deserialize the object in a way that works.
# I've copied what you've done in your model field.
return json.dumps(value.__dict__)
class PostalAddressField(JSONField):
def formfield(self, **kwargs):
defaults = {'form_class': PostalAddressJSONField}
defaults.update(kwargs)
return super().formfield(**defaults)