django - creating a preview page - django

Question

i have a 'Add Post' page in my blog app. and i wanna add a 'preview page'. i should click preview button even before save the post. for this ; i ve created two new fields in my models.py which are : titlePreview and bodyPreview.
what i am doin is saving form datas into these two fields to preview the page before publish.
but i couldn't do that. i have a addPost view. here it is :
#login_required(login_url='/panel')
def addpost(request):
if request.method=="POST":
form = addForm(request.POST)
if form.is_valid():
titleform=form.cleaned_data['title']
bodyform=form.cleaned_data['body']
checkform=form.cleaned_data['isdraft']
owner = request.user
n = Post(title = titleform, body = bodyform, isdraft=checkform, owner=owner)
n.save()
return HttpResponseRedirect('/admin/')
else:
form=addForm()
return render(request,'add.html',{'form':form,})
return render(request,'add.html',{'form':form,})
here is my models.py:
class Post(models.Model):
owner = models.ForeignKey(User)
title = models.CharField(max_length = 100)
body = models.TextField()
bodyPreview = models.TextField()
titlePreview = models.CharField(max_length=100)
slug = AutoSlugField(populate_from='title',unique=True)
posted = models.DateField(auto_now_add=True)
isdraft = models.BooleanField(default=False)
def __unicode__(self):
return self.title
#permalink
def get_absolute_url(self):
return ('view_blog_post',None, {'postslug':self.slug})
now i think i should create a different view like 'preview_view' which must redirects to 'preview.html' from addpost.html.
but i couldnt connect the points.
thank you

Answer 1

Explanation of my previous comments
First part: Creating page template passes the blog post data via POST
This part can be implemented in many ways, this is one with a form:
<form action={% url "preview_page" %} method="POST">
<input type="hidden" name="title" value="{{ post_title }}">
<input type="hidden" name="body" value="{{ post_body }}">
<input type="submit" name="preview_button" value="preview">
</form>
Second part: Create the view preview_page
#login_required(login_url='/panel')
def previewpost(request):
if request.method=="POST":
# Here pass the POST data to the template, POST is already a dict,
# so it may be can fit directly into the template if names match
# though it is always better to check the values first
return render(request,'post_template.html', request.POST)
else:
...
post_template.html
...
<h1>{{ title }}</h1>
<p>{{ body }}</p>
...
Disclaimer: The code is not tested at all
The downside of this solution is that you have to actually pass the data (title, body) again from the client to the server. I hope this works for you.