Djangorestframework数据表列断开表

Question

第1部分

我让我的datatable与obj迭代一起工作，但我正在转移到DRF-datatables。。虽然我让示例站点运行没有问题，但我这边的实际实现却让我很恼火。基本上，我整个周末都在显示一个似乎正在加载数据的表（分页显示的是正确的信息），但我的行都是空的：https://i.imgur.com/ImA23Zo.png

然后我尝试在脚本中添加“columns”部分，这会破坏整个表：https://i.imgur.com/ykwf58P.png

如果我将ajax调用更改为

"ajax": "/api/entry/?format=datatables",

然后我得到了工作最紧密的表：https://i.imgur.com/p5G5uzk.png-但是问题仍然是行是空的，如果我添加col，那么一切都会中断

我哪里做错了？我也没有收到任何错误消息，因此很难调试数据表

可能是第2部分..

我甚至需要使用DRF数据表吗？我的最终目标是能够选择多行，然后编辑所有这些条目的交易

最终目标示例

1. 选择3个行业
2. 单击表格顶部的某个位置的下拉列表
3. 从下拉列表中选择交易PK
4. 单击保存
5. 表显示了最新数据

entry_list.html

{% extends "dashboard/base.html" %}
{% load i18n %}
{% block content %}

<!-- Page Heading -->
<div class="d-sm-flex align-items-center justify-content-between mb-4">
    <h2 class="text-gray-800">{% block title %}{% trans "Imported Entries" %}{% endblock %}</h2>
    <a role="button" class="btn btn-success" href="{% url 'import' %}"><i
            class="fas fa-plus-circle"></i> Import New Entires</a>
</div>


<!-- Content Row -->
<div class="row">
    <div class="col-md-12">
        <table id="entrytable"
               class="table-hover table display"
               align="center"
               style="width:100%">
            <thead>
            <tr role="row">
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">ID
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Date
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Trade
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Type
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Symbol
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Amount
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Price
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Fee
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Reg Fee
                </th>
                <th class="sorting" tabindex="0" aria-controls="dataTable" rowspan="1"
                    colspan="1" aria-label="" style="">Ref
                </th>
            </tr>
            </thead>

        </table>
    </div>
</div>

{% endblock %}


{% block js %}

<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.2/css/bootstrap.css"/>
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.22/css/dataTables.bootstrap4.min.css"/>
<!--https://datatables.net/examples/server_side/select_rows.html-->
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.22/css/jquery.dataTables.min.css"/>

<script type="text/javascript" src="https://code.jquery.com/jquery-3.5.1.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.10.22/js/jquery.dataTables.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.10.22/js/dataTables.bootstrap4.min.js"></script>


<script>

$(document).ready(function() {
    var selected = [];

    $("#entrytable").DataTable({
        "order": [[ 1, "desc" ]],
        "processing": true,
        "serverSide": true,
        "ajax": {
            "url": "/api/entry/?format=datatables",
            "type": "POST",
            "beforeSend": function(xhr) {
                xhr.setRequestHeader("X-CSRFToken", "{{ csrf_token|escapejs }}");
            }
        },
        "columns": [
            {"data": "pk"},
            {"data": "date"},
            {"data": "trade.id"},
            {"data": "entry_type"},
            {"data": "symbol"},
            {"data": "amount"},
            {"data": "price"},
            {"data": "fee"},
            {"data": "reg_fee"},
            {"data": "transaction_id"},
        ]
        "rowCallback": function( row, data ) {
            if ( $.inArray(data.DT_RowId, selected) !== -1 ) {
                $(row).addClass('selected');
            }
        }
    });

    $('#entrytable tbody').on('click', 'tr', function () {
        var id = this.id;
        var index = $.inArray(id, selected);

        if ( index === -1 ) {
            selected.push( id );
        } else {
            selected.splice( index, 1 );
        }

        $(this).toggleClass('selected');
    } );
} );


</script>

{% endblock %}

序列化程序.py

class EntrySerializer(serializers.ModelSerializer):
    class Meta:
        model = Entry
        fields = '__all__'

Views.py

class EntryViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows groups to be viewed or edited.
    """
    queryset = Entry.objects.all()
    serializer_class = EntrySerializer
    permission_classes = [permissions.IsAdminUser]
    filter_backends = (DjangoFilterBackend, OrderingFilter,)

models.py

class Entry(models.Model):
    ENTRY = 'entry'
    EXIT = 'exit'
    ENTRY_TYPE_CHOICES = [
        (ENTRY, 'Entry'),
        (EXIT, 'Exit'),
        # (DIVIDEND_RECEIVED, 'Dividend Received'),
        # (DIVIDEND_SOLD, 'Dividend Sold'),
    ]

    class Meta:
        verbose_name = "Entry"
        verbose_name_plural = "Entries"

    trade = models.ForeignKey(Trade, on_delete=models.CASCADE, null=True, blank=True)
    date = models.DateTimeField(null=True, blank=True, default=datetime.datetime.now)
    amount = models.FloatField(null=True)
    price = models.FloatField(null=True)
    fee = models.FloatField(null=True, blank=True)
    entry_type = models.CharField(max_length=5, choices=ENTRY_TYPE_CHOICES, default=ENTRY)
    reg_fee = models.FloatField(null=True, blank=True)
    transaction_id = models.CharField(max_length=100, null=True, blank=True)
    symbol = models.ForeignKey(Symbol, on_delete=models.SET_NULL, blank=True, null=True)
    created_by = models.ForeignKey(User, null=True, blank=True, editable=False, on_delete=models.CASCADE)

Answer 1

Do I even need to go for DRF-datatables?

只有在使用服务器端处理时才需要DRF数据表（目前的情况）。除非需要支持大型数据集（1000行），否则可能不需要服务器端处理

如果结果集大小为100秒，请坚持使用模板渲染

My end goal is to be able to select multiple rows and then edit the trade for all those entries.

使用Datatables和JQuery绝对可以做到这一点。{a1}插件会有所帮助。但这很棘手（正如你所发现的）。在开始编码之前，试着阅读并理解文档和示例-从长远来看，这肯定会节省您的时间

更新

如果它不起作用

1. 尝试单独调用API URL。它是否返回正确的数据

2. 确保列名与API调用返回的名称匹配。这可能很棘手-确保您清楚API响应的结构，并且声明了columns correctly

3. 也许从一个简单的专栏开始，先让它发挥作用。然后添加新列

4. 在drf datatables中设置断点-逐步执行，查看是否有任何操作失败或错误

5. 下载并运行DRF DataTables example app——拥有一个有效的实现可能会帮助您隔离出哪里出了问题

它肯定会起作用（我已经将datatables与Django/DRF datatables一起使用过了）——但一开始设置起来可能很棘手