我创建了一个HTML表,其中包含一些信息。但是,我想增加编辑表行文本的可能性,并通过单击“保存”来更新数据库。
有人可以帮助我吗?
我需要使用Ajax吗?如果可以,我可以得到一些指导吗?
<table style="width:100%">
<tr>
<th>Questions</th>
<th>Answers</th>
<th>Action</th>
</tr>
{% for q in questions%}
<tr>
<td contenteditable='true'>{{q.question}}</td>
<td contenteditable='true'>{{q.answer}}</td>
<td>
<center><a href="{% url 'edit_question' q.id %}">Save Edit --- </a><a href="{% url 'delete_question' q.id %}">Delete</a></center>
</td>
</tr>
{%endfor%}
</table>
这是我的视图,我知道它不应该像这样,因为在视图和HTML表之间没有传递参数,需要对此进行修复:
def edit_question(request,id):
question = Question.objects.get(id=id)
if(question):
question.update(question = quest, answer = ans)
return redirect('list_questions')
return render(request, 'generator/questions.html', {'question': question})
更新
我使用了@xxbinxx提供的解决方案,但是在视图函数中,条件请求.method ==“ POST”似乎没有经过验证,即使它在ajax函数中也是如此?
这里是更新的代码:
<script type="text/javascript">
function saveQuestionAnswer(e, id) {
e.preventDefault();
console.log(id)
editableQuestion = $('[data-id=question-' + id + ']')
editableAnswer = $('[data-id=answer-' + id + ']')
console.log(editableQuestion.text(), editableAnswer.text())
$.ajax({
url: "list/update/"+id,
type: "POST",
dataType: "json",
data: { "question": editableQuestion.html(), "answer": editableAnswer.html() },
success: function(response) {
// set updated value as old value
alert("Updated successfully")
},
error: function() {
console.log("errr");
alert("An error occurred")
}
});
return false;
}
</script>
HTML:
<table style="width:90%">
<tr>
<th ><font color="#db0011">Questions</th>
<th><font color="#db0011">Answers</th>
<th><font color="#db0011">Action</th>
</tr>
{% for q in questions%}
<tr>
<td width="40%" height="50px" contenteditable='true' data-id="question-{{q.id}}" data-old_value='{{q.question}}' onClick="highlightEdit(this);">{{q.question}}</td>
<td width="45%" height="50px" contenteditable='true' data-id="answer-{{q.id}}" data-old_value='{{q.answer}}'>{{q.answer}}</td>
<td width="15%" height="50px"><center>
<a class="button" href="{% url 'edit_question' q.id %}" onclick="saveQuestionAnswer('{{q.id}}')">Edit</a>
<a class="button" href="{% url 'delete_question' q.id %}">Delete</a>
</center></td>
</tr>
{%endfor%}
</table>
views.py
def edit_question(request,id):
quest = Question.objects.get(id=id)
print(quest)
if request.method=='POST': # It doesn't access this condition so the updates won't occur
print("*"*100)
quest.question = request.POST.get('question')
quest.answer = request.POST.get('answer')
print(quest)
quest.save()
return redirect('list_questions')
return render(request, 'browse/questions.html', {'quest': quest})
有人可以帮助我解决最后一个问题吗?
答案 0 :(得分:2)
是的,您必须使用AJAX
来完成就地编辑。我正在发布快速代码,以便您获取想法。
注意:下面的代码有错误;)我不想写详细信息,因为这对您不利。您必须集思广益,自己动手尝试。
contenteditable=”true”
用于使列可编辑。data-old_value
,用于在发出Ajax请求更新数据库表中已更改的值之前检查旧值。 saveQuestionAnswer()
highlightEdit()
在编辑模式下突出显示列。 <table style="width:100%">
<tr>
<th>Questions</th>
<th>Answers</th>
<th>Action</th>
</tr>
{% for q in questions%}
<tr>
<td contenteditable='true' data-id="question-{{q.id}}" data-old_value='{{q.question}}' onClick="highlightEdit(this);">{{q.question}}</td>
<td contenteditable='true' data-id="answer-{{q.id}}" data-old_value='{{q.answer}}' onClick="highlightEdit(this);">{{q.answer}}</td>
<td>
<center><a onclick="saveQuestionAnswer('{{q.id}}')">Save your edit --- </a><a href="{% url 'delete_question' q.id %}">Delete</a></center>
</td>
</tr>
{%endfor%}
</table>
<script>
function saveQuestionAnswer(id) {
editableQuestion = $('a[data-id=question-'+id+']') //this will get data-id=question-1 where 1 is the question ID
editableAnswer = $('a[data-id=answer-'+id+']') //this will get data-id=answer-1 where 1 is the question ID
// no change change made then return false
if ($(editableQuestion).attr('data-old_value') === editableQuestion.innerHTML && $(editableAnswer).attr('data-old_value') === editableAnswer.innerHTML)
return false;
// send ajax to update value
$(editableObj).css("background", "#FFF url(loader.gif) no-repeat right");
$.ajax({
url: "/my-save-url/",
type: "POST",
dataType: "json",
data: {"question": editableQuestion.innerHTML, "answer": editableAnswer.innerHTML}
success: function(response) {
// set updated value as old value
$(editableQuestion).attr('data-old_value', response.question);
$(editableQuestion).css("background", "#FDFDFD");
$(editableAnswer).attr('data-old_value', response.answer);
$(editableAnswer).css("background", "#FDFDFD");
},
error: function() {
console.log("errr");
alert("An error occurred")
}
});
}
function highlightEdit(elem){
$(elem).css("background", "#e3e3e3") //just add any css or anything, it's only to depict that this area is being edited...
}
</script>
您的视图现在将以{'question': <value>, 'answer': <value>}
的json格式获取数据
您可以根据需要在此'id'
中添加另一个密钥json
,也可以像这样/saveQuestionAnswer/<id>
那样保留您的网址。在这里,您自己的网址中就有id
。
希望您现在明白了。
谢谢