如何使用表单和视图保存django动态formset数据
我正在尝试使用表单和视图保存formset额外字段数据。 例如： - 队员没有球员。所以我想通过点击添加更多按钮添加新的播放器。我尝试下面的代码。问题是如果我一次添加多个玩家......它只保存最后一个对象值 o/p for below code
models.py
from django.db import models
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
from django import forms
from django.forms.formsets import formset_factory
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()
views.py
from django.shortcuts import render, get_object_or_404,redirect
from .models import Player,Team
from .forms import TeamForm,PlayerFormset
from django.contrib import messages
from django.contrib.auth.decorators import login_required
from django import forms
from django.forms import formset_factory
def post(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, 'new.html', {'form':form})
模板：new.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="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<form action="" method="post" class="">
{% csrf_token %}
<h2> Team</h2>
{% for field in form %}
{{ field.errors }}
{{ field.label_tag }} : {{ field }}
{% endfor %}
{{ form.players.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.players %}
<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) {
var idData= id;
var splitV= String(idData).split('-');
var fData= splitV[0];
var tData= splitV[2];
return fData+ "-" +index + "-" + tData
},
'name': function (_, 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) {
var idData= id;
var splitV= String(idData).split('-');
var fData= splitV[0];
var tData= splitV[2];
return fData+ "-" +i + "-" + tData
},
'name': function (_, 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);
i++;
});
</script>
</body>
</html>
=============================================== ================
我无法保存所有对象。请更正
3 个答案:
答案 0 :(得分：0)
您需要遍历form.player_instances。
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.is_valid():
for item in form.player_instances:
player = Player()
player.pname= item.cleaned_data['pname']
player.hscore= item.cleaned_data['hscore']
player.age= item.cleaned_data['age']
player.save()
team.player.add(player)
team.save()
答案 1 :(得分：0)
您只能保存第一个项目的原因是您添加的行ID，名称仍为id_form-0-pname而不是更改为id_form-1-pname（模式为id_form-i-pname）。
实现此目的的另一种方法是使用lib django-dynamic-formset，代码在这里：
news.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>
</tr>
</tbody>
{% endfor %}
</table>
<button type="submit" class="btn btn-primary">save</button>
</form>
</div>
<script>
$(function () {
$('#myForm tbody tr').formset();
})
</script>
</body>
</html>
看起来像
这很简单，也很有效。
可以从here的github下载jquery.formset.js。文档为here。
您可以使用conf jquery.formset.js更改添加\删除链接的文本和CSS，如：
/* Setup plugin defaults */
$.fn.formset.defaults = {
prefix: 'form', // The form prefix for your django formset
formTemplate: null, // The jQuery selection cloned to generate new form instances
addText: 'add another', // Text for the add link
deleteText: 'remove', // Text for the delete link
addCssClass: 'add-row', // CSS class applied to the add link
deleteCssClass: 'delete-row', // CSS class applied to the delete link
formCssClass: 'dynamic-form', // CSS class applied to each form in a formset
extraClasses: [], // Additional CSS classes, which will be applied to each form in turn
keepFieldValues: '', // jQuery selector for fields whose values should be kept when the form is cloned
added: null, // Function called each time a new form is added
removed: null // Function called each time a form is deleted
};
答案 2 :(得分：0)
**对您的new.html文件使用以下内容，并保持其他文件（如表单和模型）不变
<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="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.formset/1.2.2/jquery.formset.js"></script>
</head>
<body>
<div class="container">
<form method="post" class="">
{% csrf_token %}
<h2> Team</h2>
{% for field in form %}
{{ field.errors }}
{{ field.label_tag }} : {{ field }}
{% endfor %}
{{ form.players.management_form }}
<div style="display: none" > {{ form.players.empty_form }}</div>
<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.players %}
<tbody class="player-instances" id="playerFrmTableId">
<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>
$("#input_add").click(function() {
let formCount = parseInt($('#id_form-TOTAL_FORMS').val());
var html = `<tr>
<td>{{ form.players.empty_form.pname }}</td>
<td>{{ form.players.empty_form.hscore }}</td>
<td>{{ form.players.empty_form.age }}</td>
<td> <input id="input_add" type="button" name="add" value=" Add More " class="tr_clone_add btn data_input"> </td>
</tr>`;
html = html.replace(/__prefix__/g, formCount);
$('#id_form-TOTAL_FORMS').val(formCount + 1);
$('#playerFrmTableId').append(html);
});
</script>
</body>
</html>
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