我有一個Django應用程序,其中有Post和PostImage模型。Django - 具有一對多關係的模型的更新頁面
每個帖子都有多個PostImages。
在帖子添加頁面中,我有Post和PostImages的表單。我爲PostImages使用了formset。下面是視圖代碼:
def post_new(request, template_name="posts/new.html"):
post_form = Post(request.POST or None, request.FILES or None)
PostImageFormSet = formset_factory(PostImageForm, extra=1)
post_image_formset = PostImageFormSet(request.POST or None, request.FILES or None, prefix='post_images')
if post_form.is_valid() and post_image_formset.is_valid():
post = post_form.save(commit=False)
post.save()
for post_image_form in post_image_formset:
post_image = post_image_form.save(commit=False)
post_image.post = post
post_image.save()
redirect_url = urlresolvers.reverse('post_show')
return HttpResponseRedirect(redirect_url)
form_data = {'post_form': post_form, 'post_image_formset': post_image_formset}
csrfContext = RequestContext(request, form_data)
return render_to_response(template_name, csrfContext)
使用jQuery添加更多的表格PostImage,它運行完美,我能夠創造儘可能多的圖片後,我想。
現在,我希望我的post_edit頁面以類似的方式工作。這裏是我的post_edit觀點方法代碼:
def post_edit(request, post_slug, template_name="developers/posts/edit.html"):
post = get_object_or_404(post, slug=post_slug)
post_images = PostImage.objects.filter(post_id=post.id)
count = len(post_images)
post_form = postForm(request.POST or None, request.FILES or None, instance=post)
postImageFormSet = formset_factory(postImageForm, extra=count)
post_image_formset = postImageFormSet(request.POST or None, request.FILES or None, prefix='post_images')
for post_image_form, post_image in zip(post_image_formset.forms, post_images):
post_image_form.initial = post_image
if post_form.is_valid():
post_form.save()
redirect_url = urlresolvers.reverse('developer_post_show', args=[post_slug])
return redirect(redirect_url)
form_data = {'post_form': post_form, 'post_image_formset': post_image_formset}
csrfContext = RequestContext(request, form_data)
return render_to_response(template_name, csrfContext)
這裏是我的編輯頁面模板:
{% extends "base.html" %}
{% block content %}
{% load thumbnail %}
{% if error_message %} <p><strong>{{ error_message }}</strong></p> {% endif %}
{{ post_form.errors }}
<div style="width: 80%; margin: 0 auto;">
<form action="" method="post">
{% csrf_token %}
<div>
... Post related HTML
</div>
<div class="post-images" style="clear: both;">
{% for post_image_form in post_image_formset %}
<div>
{{ post_image_form.caption }}
</div>
{% endfor %}
</div>
<div style="clear: both; position: relative; left: 320px;">
<input type="submit" value = "Update post" />
</div>
</form>
</div>
{% endblock %}
我得到的錯誤在我的模板說:
「PostImage」對象沒有屬性'get'
在我的模板中,我遍歷了對象的post_image_formset,並且它迭代了3次,這是正確的,因爲那個帖子有3張圖片。但我仍然得到這個錯誤。誰能幫忙?
謝謝。
向我們展示引發錯誤的模板部分。爲什麼它會嘗試調用'get'?聽起來像訪問變量時的一個小錯誤。 –
我更新了我的問題,爲編輯頁面添加了我的模板。在模板中,我剛剛嘗試訪問post_image標題。謝謝。 – rookieRailer
如果您只是說「{{post_image_form}}」,甚至用「{{post_image_formset}}」替換整個for循環會發生什麼?它會拋出同樣的錯誤嗎? https://docs.djangoproject.com/en/1.4/topics/forms/formsets/#using-a-formset-in-views-and-templates –