【发布时间】：2020-07-25 18:20:17
【问题描述】：
在我的 django 应用程序中，我试图了解多对多关系，并且我正在使用 formset 来存储这样的数据：
Views.py
def Team_Form(request):
if request.POST:
form = TeamForm(request.POST)
form.player_instances = PlayerFormset(request.POST)
if form.is_valid():
team= Team()
team.tname= form.cleaned_data['tname']
team.save()
if form.player_instances.cleaned_data is not None:
for item in form.player_instances.cleaned_data:
player = Player()
player.pname= item['pname']
player.hscore= item['hscore']
player.age= item['age']
player.save()
team.player.add(player)
team.save()
else:
form = TeamForm()
return render(request, 'packsapp/employee/new.html', {'form':form})
模型.py
class Player(models.Model):
pname = models.CharField(max_length=50)
hscore = models.IntegerField()
age = models.IntegerField()
def __str__(self):
return self.pname
class Team(models.Model):
tname = models.CharField(max_length=100)
player= models.ManyToManyField(Player)
def __str__(self):
return self.tname
Forms.py
class PlayerForm(forms.Form):
pname = forms.CharField()
hscore= forms.IntegerField()
age = forms.IntegerField()
PlayerFormset= formset_factory(PlayerForm)
class TeamForm(forms.Form):
tname= forms.CharField()
player= PlayerFormset()
HTML
<html>
<head>
<title>gffdfdf</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="/static/jquery.formset.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<form id="myForm" action="" method="post" class="">
{% csrf_token %}
<h2> Team</h2>
{% for field in form %}
{{ field.errors }}
{{ field.label_tag }} {{ field }}
{% endfor %}
{{ form.player.management_form }}
<h3> Product Instance(s)</h3>
<table id="table-product" class="table">
<thead>
<tr>
<th>player name</th>
<th>highest score</th>
<th>age</th>
</tr>
</thead>
{% for player in form.player %}
<tbody class="player-instances">
<tr>
<td>{{ player.pname }}</td>
<td>{{ player.hscore }}</td>
<td>{{ player.age }}</td>
<td><input id="input_add" type="button" name="add" value=" Add More "
class="tr_clone_add btn data_input"></td>
</tr>
</tbody>
{% endfor %}
</table>
<button type="submit" class="btn btn-primary">save</button>
</form>
</div>
<script>
var i = 1;
$("#input_add").click(function () {
$("tbody tr:first").clone().find(".data_input").each(function () {
if ($(this).attr('class') == 'tr_clone_add btn data_input') {
$(this).attr({
'id': function (_, id) {
return "remove_button"
},
'name': function (_, name) {
return "name_remove" + i
},
'value': 'Remove'
}).on("click", function () {
var a = $(this).parent();
var b = a.parent();
i = i - 1
$('#id_form-TOTAL_FORMS').val(i);
b.remove();
$('.player-instances tr').each(function (index, value) {
$(this).find('.data_input').each(function () {
$(this).attr({
'id': function (_, id) {
console.log("id", id)
var idData = id;
var splitV = String(idData).split('-');
var fData = splitV[0];
var tData = splitV[2];
return fData + "-" + index + "-" + tData
},
'name': function (_, name) {
console.log("name", name)
var nameData = name;
var splitV = String(nameData).split('-');
var fData = splitV[0];
var tData = splitV[2];
return fData + "-" + index + "-" + tData
}
});
})
})
})
} else {
$(this).attr({
'id': function (_, id) {
console.log("id", id)
var idData = id;
var splitV = String(idData).split('-');
var fData = splitV[0];
var tData = splitV[2];
return fData + "-" + i + "-" + tData
},
'name': function (_, name) {
console.log("name", name)
var nameData = name;
var splitV = String(nameData).split('-');
var fData = splitV[0];
var tData = splitV[2];
return fData + "-" + i + "-" + tData
}
});
}
}).end().appendTo("tbody");
$('#id_form-TOTAL_FORMS').val(1 + i);
$("tbody tr:last :input").each(function () {
$(this).attr({
'id': function (_, id) {
return id.replace(/\d/g, i)
},
'name': function (_, name) {
return name.replace(/\d/g, i)
},
})
})
i++;
});
</script>
</body>
</html>
我不明白的是如何编辑我刚刚保存的表单集或更好地表达问题，如何将保存的实例传递给表单集进行编辑？
更新：
我尝试了 modelformset_factory，它在帖子中从 Player 获取所有对象并进行更新
Forms.py
PlayerFormset= modelformset_factory(Player, fields=('pname','hscore','age'))
截图：
尝试编辑团队时Matt：
【问题讨论】：
标签： django django-forms formset