问题
I am building a frontend form that allows someone to post an article without accessing the admin.
When the user is logged in, I would like for him/her to be able to write an article. Upon saving, I would like that user to automatically be set as the author of the article.
I am at an impasse. Any help would be much appreciated.
models.py
from django.db import models
from django.urls import reverse
from django.contrib.auth.models import User
from django.utils import timezone
class Article(models.Model):
author = models.ForeignKey(User)
title = models.CharField(max_length=65)
text = HTMLField()
created_date = models.DateTimeField(default=timezone.now)
published_date = models.DateTimeField(blank=True, null=True)
def publish(self):
self.published_date = timezone.now()
self.save()
def __str__(self):
return self.title
class ArticleImage(models.Model):
image = CloudinaryField('image')
image_name = models.CharField(max_length=55,
default='')
article = models.ForeignKey(Article)
def __str__(self):
return self.image_name
class ArticleTag(models.Model):
slug = models.SlugField(max_length=50,
unique=True)
article = models.ForeignKey(Article)
def __str__(self):
return self.slug
class ArticleCategory(models.Model):
slug = models.SlugField(max_length=20,
unique=True)
article = models.ForeignKey(Article)
def __str__(self):
return self.slug
forms.py
class ArticleCreationForm(ModelForm):
class Meta:
model = Article
fields = ['title', 'text']
widgets = {
'title': forms.TextInput(attrs={'placeholder': 'Please add a title. Max: 65 characters'}),
'text': forms.Textarea(attrs={'cols': 80, 'rows': 40, 'placeholder': 'Starting typing your article...'})
}
ArticleImageFormSet = inlineformset_factory(Article, ArticleImage,
fields=('image', 'image_name',),
extra=1,
max_num=1,
widgets={'image_name':
forms.TextInput(attrs={'placeholder': 'Image name'})})
ArticleTagFormSet = inlineformset_factory(Article, ArticleTag,
fields=('slug',),
extra=1,
max_num=1)
ArticleCategoryFormSet = inlineformset_factory(Article, ArticleCategory,
fields=('slug',),
extra=1,
max_num=1)
views.py
class CreateArticle(CreateView):
model = Article
form_class = ArticleCreationForm
template_name_suffix = '_add_form'
def get_success_url(self):
return reverse('accounts:detail', kwargs={'pk': self.object.pk})
def get(self, request, *args, **kwargs):
"""
Handles GET requests and instantiates blank versions of the form
and its inline formsets.
"""
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
articleimage_form = ArticleImageFormSet()
articletag_form = ArticleTagFormSet()
articlecategory_form = ArticleCategoryFormSet()
return self.render_to_response(
self.get_context_data(form=form,
articleimage_form=articleimage_form,
articletag_form=articletag_form,
articlecategory_form=articlecategory_form))
def post(self, request, *args, **kwargs):
"""
Handles POST requests, instantiating a form instance and its inline
formsets with the passed POST variables and then checking them for
validity.
"""
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
articleimage_form = ArticleImageFormSet(self.request.POST)
articletag_form = ArticleTagFormSet(self.request.POST)
articlecategory_form = ArticleCategoryFormSet(self.request.POST)
if (form.is_valid() and articleimage_form.is_valid() and
articletag_form.is_valid() and articlecategory_form.is_valid()):
return self.form_valid(form, articleimage_form, articletag_form,
articlecategory_form)
else:
return self.form_invalid(form, articleimage_form, articletag_form,
articlecategory_form)
def form_valid(self, form, articleimage_form, articletag_form,
articlecategory_form):
"""
Called if all forms are valid. Creates a Recipe instance along with
associated Ingredients and Instructions and then redirects to a
success page.
"""
self.object = form.save()
obj.author = request.user.username
articleimage_form.instance = self.object
articleimage_form.save()
articletag_form.instance = self.object
articletag_form.save()
articlecategory_form.instance = self.object
articlecategory_form.save()
return HttpResponseRedirect(self.get_success_url())
def form_invalid(self, form, articleimage_form, articletag_form,
articlecategory_form):
"""
Called if a form is invalid. Re-renders the context data with the
data-filled forms and errors.
"""
return self.render_to_response(
self.get_context_data(form=form,
articleimage_form=articleimage_form,
articletag_form=articletag_form,
articlecategory_form=articlecategory_form))
template.html
<form enctype="multipart/form-data" action="" method="post">
{% csrf_token %}
<div class="row">
<div class="medium-9 columns">
{{ form.non_field_errors }}
<h2 class="article-identifier">Add a new article</h2>
<div class="fieldWrapper">
{{ form.title.errors }}
{{ form.title }}
<div id="title_feedback" class="text-right"></div>
</div>
<div class="fieldWrapper">
{{ form.text.errors }}
{{ form.text }}
</div>
</div>
<div class="medium-3 columns">
<div class="button-wrapper">
<input class="button" type="submit" value="Publish">
</div>
<fieldset class="image_upload">
<h2>Add an Image</h2>
{{ articleimage_form.management_form }}
{{ articleimage_form.non_form_errors }}
{% for form in articleimage_form %}
{{ form.id }}
<div class="inline {{ articleimage_form.prefix }}">
{{ form.image.errors }}
{{ form.image.label_tag }}
{{ form.image }}
{{ form.image_name.errors }}
{{ form.image_name.label_tag }}
{{ form.image_name }}
</div>
{% endfor %}
</fieldset>
<fieldset>
<h2>Add a Category</h2>
{{ articlecategory_form.management_form }}
{{ articlecategory_form.non_form_errors }}
{% for form in articlecategory_form %}
{{ form.id }}
<div class="inline {{ articlecategory_form.prefix }}">
{{ form.slug.errors }}
{{ form.slug.label_tag }}
{{ form.slug }}
</div>
{% endfor %}
</fieldset>
<hr />
<fieldset>
<h2>Add a Tag</h2>
{{ articletag_form.management_form }}
{{ articletag_form.non_form_errors }}
{% for form in articletag_form %}
{{ form.id }}
<div class="inline {{ articletag_form.prefix }}">
{{ form.slug.errors }}
{{ form.slug.label_tag }}
{{ form.slug }}
</div>
{% endfor %}
</fieldset>
</div>
</div>
</form>
回答1:
Save the form with commit=False, set the user on the object, then save the object. Inside the form_valid method, you can access the user with self.request.user. You should assign the user instance, not the username as your code currently does.
obj = form.save(commit=False)
obj.author = self.request.user
...
obj.save
You should also restrict the view to logged in users. You can use the LoginRequiredMixin for this.
from django.contrib.auth.mixins import LoginRequiredMixin
class CreateArticle(LoginRequiredMixin, CreateView):
回答2:
As per Django's documentation, you can just set form.instance.author to the current user (self.request.user), in the overriden form_valid method (you seem to have done something similar in your code already using other objects.). Then you can just return super().form_valid(form).
https://docs.djangoproject.com/en/2.0/topics/class-based-views/generic-editing/#models-and-request-user
In your case you seem to have a need to do other things in your form_valid method, so it may not necessarily be correct for you to return super().form_valid(form).
回答3:
You can try to add hidden input to your form template
<form>
....
<input type="hidden" name="author" value="{{ request.user.id }}">
</form>
来源：https://stackoverflow.com/questions/42481287/automatically-set-logged-in-user-as-the-author-in-django-using-createview-and-mo