本文介绍了对象没有属性'get'的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我尝试编辑对象时出现错误：
我符合form.as_p：
{％extendslayout.html％}
{％block内容％}
< form action ={{form_url}}method =post> {％csrf_token％}
{{form.as_p}}
<输入类型=submitvalue =提交/>
< / form>
{％endblock％}
控制器代码：
def edit（request，id）：
如果request.method =='POST'：＃如果表单已经提交...
form = IntentionForm（request.POST）＃绑定到POST数据的表单
如果form.is_valid（）：＃所有验证规则通过
＃处理form.cleaned_data中的数据
＃ ...
intent = form.save（）
return HttpResponseRedirect（reverse_lazy（'intent-show'，args = [intent.id]））＃POST后重定向
else：
intent = Intention.objects.get（pk = id）
form = IntentionForm（intent）＃未绑定的形式
返回render_to_response（'intentions / templates / form.html'，
{'form'：form，'form_url'：reverse_lazy（'intent-edit'，args = [intent.id]）}，
context_instance = RequestContext（req uest）
）
有人可以给我任何建议吗？
引用：
环境：
请求方法：GET
请求URL：http://127.0.0.1:8000/intentions/3/edit
Django版本：1.4
Python版本：2.7.3
已安装的应用程序：
（'django.contrib.auth'，
'django.contrib.contenttypes'，
'django.contrib.sessions'，
'django.contrib.sites '，
'django.contrib.messages'，
'django.contrib.staticfiles'，
'intentions'，
'django.contrib.admin'）
安装的中间件：
（'django.middleware.common.CommonMiddleware'，
'django.contrib.sessions.middleware.SessionMiddleware'，
'django.middleware.csrf.CsrfViewMiddleware'，
'django.contrib.auth.middleware.AuthenticationMiddleware'，
'django.contrib.messages.middleware.MessageMiddleware'）
Te mplate错误：
在模板/home/marek/devel/django/prayer/intentions/templates/form.html中，错误在第4行
'Intention'对象没有属性'get'
1：{％extendslayout.html％}
2：{％block content％}
3：< form action ={{form_url}}method =post> {％csrf_token％}
4：{{form.as_p}}
5：< input type =submitvalue =Submit/>
6：< / form>
7：{％endblock％}
8：
追溯：
文件/ usr / local / lib / python2.7 / dist-packages / django / core / handlers / base.pyin get_response
111. response = callback（request，* callback_args，** callback_kwargs）
文件/home/marek/devel/django/prayer/intentions/views.py在编辑
55. context_instance = RequestContext（请求）
文件/usr/local/lib/python2.7/dist return_to_response
20.返回HttpResponse（loader.render_to_string（* args，** kwargs），** httpresponse_kwargs）
文件/ usr / local / lib中的-packages / django / shortcuts / __ init__.py /python2.7/dist-packages/django/template/loader.pyin render_to_string
176. return t.render（context_instance）
文件/usr/local/lib/python2.7/dist render
140.中的-packages / django / template / base.py。return self._render（context）
文件/usr/local/lib/python2.7/dist-packages/django/template / BA se.py在_render
134. return self.nodelist.render（context）
文件/usr/local/lib/python2.7/dist-packages/django/template/base.py在render
823. bit = self.render_node（node，context）
文件/usr/local/lib/python2.7/dist-packages/django/template/debug.py在render_node
74. return node.render（context）
文件/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py在render
123. return compile_parent._render（context）
文件/usr/local/lib/python2.7/dist-packages/django/template/base.py在_render
134. return self.nodelist.render（上下文）
文件/usr/local/lib/python2.7/dist-packages/django/template/base.py在render
823. bit = self.render_node（node，context）
文件/usr/local/lib/python2.7/dist-packages/django/template/debug.py在render_node
中74.返回node.render（上下文）
文件/ USR / local / lib目录/ python2.7 / DIST-PAC kages / django / template / loader_tags.pyin render
62. result = block.nodelist.render（context）
文件/usr/local/lib/python2.7/dist-packages/django /template/base.pyin render
823. bit = self.render_node（node，context）
文件/usr/local/lib/python2.7/dist-packages/django/template/ render_node
74. return node.render（context）
文件/usr/local/lib/python2.7/dist-packages/django/template/debug.py在渲染中
84. output = self.filter_expression.resolve（context）
解析$ b $中的文件/usr/local/lib/python2.7/dist-packages/django/template/base.py b 571. obj = self.var.resolve（context）
解析
721中的文件/usr/local/lib/python2.7/dist-packages/django/template/base.py。 value = self._resolve_lookup（context）
文件/usr/local/lib/python2.7/dist-packages/django/template/base.py在_resolve_lookup
772. current = current（）
文件/usr/local/lib/python2.7/dist-packages/django/forms/forms.pyin as_p
238. errors_on_separate_row = True）
文件 _html_output中的/usr/local/lib/python2.7/dist-packages/django/forms/forms.py
143. top_errors = self.non_field_errors（）＃应显示在所有字段上方的错误。
文件/usr/local/lib/python2.7/dist-packages/django/forms/forms.pyin non_field_errors
246. return self.errors.get（NON_FIELD_ERRORS，self.error_class（ ））
文件/usr/local/lib/python2.7/dist-packages/django/forms/forms.py在_get_errors
115. self.full_clean（）
文件 /usr/local/lib/python2.7/dist-packages/django/forms/forms.pyin full_clean
270. self._clean_fields（）
文件/ usr / local / lib / python2 _clean_fields
281.。value = field.widget.value_from_datadict（self.data，self.files，self.add_prefix（name））
file_from_datadict中的文件/usr/local/lib/python2.7/dist-packages/django/forms/widgets.py
205. return data.get（name，None）
异常类型：/ intentions / 3 / edit
中的AttributeError异常值：'Intention'对象没有属性'get'
解决方案
您的问题是h ere：
intent = Intention.objects.get（pk = id）
form = IntentionForm（intent）＃An未绑定的形式
表单的第一个参数是数据，但您传递的是实例。要适当地传递您应该使用的实例：
intent = Intention.objects.get（pk = id）
form = IntentionForm（instance = intent）＃未绑定的形式
I can't find any solution to my issue with similar kind of error.
The error is when I try to edit object:
I have it in line with form.as_p:
{% extends "layout.html" %}
{% block content %}
<form action="{{ form_url }}" method="post">{% csrf_token %}
{{ form.as_p }}
<input type="submit" value="Submit" />
</form>
{% endblock %}
controller code:
def edit(request, id):
if request.method == 'POST': # If the form has been submitted...
form = IntentionForm(request.POST) # A form bound to the POST data
if form.is_valid(): # All validation rules pass
# Process the data in form.cleaned_data
# ...
intention = form.save()
return HttpResponseRedirect(reverse_lazy('intention-show', args=[intention.id])) # Redirect after POST
else:
intention = Intention.objects.get(pk=id)
form = IntentionForm(intention) # An unbound form
return render_to_response('intentions/templates/form.html',
{'form': form, 'form_url': reverse_lazy('intention-edit', args=[intention.id])},
context_instance=RequestContext(request)
)
Could someone give me any advice?
Trackback:
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/intentions/3/edit
Django Version: 1.4
Python Version: 2.7.3
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'intentions',
'django.contrib.admin')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')
Template error:
In template /home/marek/devel/django/prayer/intentions/templates/form.html, error at line 4
'Intention' object has no attribute 'get'
1 : {% extends "layout.html" %}
2 : {% block content %}
3 : <form action="{{ form_url }}" method="post">{% csrf_token %}
4 : {{ form.as_p }}
5 : <input type="submit" value="Submit" />
6 : </form>
7 : {% endblock %}
8 :
Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
111. response = callback(request, *callback_args, **callback_kwargs)
File "/home/marek/devel/django/prayer/intentions/views.py" in edit
55. context_instance=RequestContext(request)
File "/usr/local/lib/python2.7/dist-packages/django/shortcuts/__init__.py" in render_to_response
20. return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/template/loader.py" in render_to_string
176. return t.render(context_instance)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
140. return self._render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render
134. return self.nodelist.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
823. bit = self.render_node(node, context)
File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node
74. return node.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render
123. return compiled_parent._render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render
134. return self.nodelist.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
823. bit = self.render_node(node, context)
File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node
74. return node.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render
62. result = block.nodelist.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
823. bit = self.render_node(node, context)
File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node
74. return node.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render
84. output = self.filter_expression.resolve(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in resolve
571. obj = self.var.resolve(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in resolve
721. value = self._resolve_lookup(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _resolve_lookup
772. current = current()
File "/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in as_p
238. errors_on_separate_row = True)
File "/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in _html_output
143. top_errors = self.non_field_errors() # Errors that should be displayed above all fields.
File "/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in non_field_errors
246. return self.errors.get(NON_FIELD_ERRORS, self.error_class())
File "/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in _get_errors
115. self.full_clean()
File "/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in full_clean
270. self._clean_fields()
File "/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in _clean_fields
281. value = field.widget.value_from_datadict(self.data, self.files, self.add_prefix(name))
File "/usr/local/lib/python2.7/dist-packages/django/forms/widgets.py" in value_from_datadict
205. return data.get(name, None)
Exception Type: AttributeError at /intentions/3/edit
Exception Value: 'Intention' object has no attribute 'get'
解决方案
Your problem is here:
intention = Intention.objects.get(pk=id)
form = IntentionForm(intention) # An unbound form
The first argument to a form is the data but you are passing the instance. To properly pass the instance you should use:
intention = Intention.objects.get(pk=id)
form = IntentionForm(instance=intention) # An unbound form
这篇关于对象没有属性'get'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！