問題描述

關于Django表單問題先給出models.py和forms.py

圖片描述

再給出views.py的代碼

def articleUpdate(request, articleId):’’’Update the article instance: 1. Get the article to update; redirect to 404 if not found2. Render a bound form if the method is GET3. If the form is valid, save it to the model, otherwise render abound form with error messages’’’articleToUpdate = get_object_or_404( Article, id=articleId)template = ’article/articleCreateUpdate.html’if request.method == ’GET’: print(ArticleForm(instance=articleToUpdate)) articleForm = ArticleForm(instance=articleToUpdate) return render(request, template, {’articleForm’:articleForm, ’article’:articleToUpdate})# POSTarticleForm = ArticleForm(request.POST, instance=articleToUpdate)if not articleForm.is_valid(): return render(request, template, {’articleForm’:articleForm, ’article’:articleToUpdate})articleForm.save()messages.success(request, ’文章已修改’)return redirect(’article:articleRead’, articleId=articleId)def commentCreate(request, articleId): ’’’Create a new article instance1. If method is GET, render an empty form2 . If method is POST, perform form validation. Display error messages if the form is invalid3. Save the form to the model and redirect to the article page’’’template = ’article/commentCreate.html’ articleToUpdate = get_object_or_404( Article, id=articleId) if request.method == ’GET’:return render(request, template,{’commentForm’:CommentForm(), ’article’:articleToUpdate}) # POSTcommentForm = CommentForm(request.POST, instance=articleToUpdate) if not commentForm.is_valid():return render(request, template, {’commentForm’:commentForm(), ’article’:articleToUpdate}) commentForm.save() messages.success(request,’留言已新增’) return redirect(’article:articleRead’,articleId=articleId)

兩則方法是幾乎是一樣的，都是用forms表單，但是我使用的forms表單并不是同一類，一個是ArticleForm一個是CommentForm但是結果出現在views：commentCreate里它的效果是等于articleUpdate，即新增留言變成修改文章內容

問題解答

表單是類，你取出數據，為什么不填充到表單中。

else:form = CommentsForm(request.POST)if form.is_valid():