数据表未在django-datatable-view中填充数据 [英] Data table not populating data in django-datatable-view

问题描述

我已经开始尝试测试 django- datatable-view .

我收到一个JS错误，提示Uncaught TypeError:$$.each不是一个函数.尽管遵循图书馆网站上的代码，但jQuery是在datatableview.js之前加载的.

models.py

from django.db import models
class Post(models.Model):
    title= models.CharField(max_length=150)
    body = models.TextField()
    created = models.DateField()  

views.py

from datatableview.views import DatatableView
from .models import Post
class MyView(DatatableView):
    model = Post
    datatable_options = {
        'columns': [
            'title',
            'body',
            'created',
            ]
    }

urls.py

from django.urls import path
from . import views

urlpatterns = [
    path('', views.MyView.as_view(), name='myview'),
]

post_list.html

{% load static %}
<!-- myapp/mymodel_list.html -->

<!-- Load dependencies -->
<script src="https://code.jquery.com/jquery-3.3.1.min.js"
        integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
        crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.datatables.net/1.10.19/css/jquery.dataTables.min.css">
<script type="text/javascript" charset="utf8" src="https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js"></script>

<!-- Load js for initializing tables via their server-side options -->
<script type="text/javascript" charset="utf8" src="{% static 'js/datatableview.js' %}"></script>
<script type="text/javascript">
    $(function(){
        datatableview.initialize('.datatable');
    });
</script>

<!-- Render the table skeleton, includes the .datatable class for the on-ready initializer. -->
{{ datatable }}

控制台错误:

  query-3.3.1.min.js:2 jQuery.Deferred exception: $$.each is not a 
   function TypeError: $$.each is not a function
        at Object.initialize 
   (http://127.0.0.1:8000/static/js/datatableview.js:20:12)
        at HTMLDocument.<anonymous> (http://127.0.0.1:8000/:17:23)
        at l (https://code.jquery.com/jquery-3.3.1.min.js:2:29375)
        at c (https://code.jquery.com/jquery-3.3.1.min.js:2:29677) 
    undefined
    w.Deferred.exceptionHook @ jquery-3.3.1.min.js:2
    c @ jquery-3.3.1.min.js:2
    setTimeout (async)
    (anonymous) @ jquery-3.3.1.min.js:2
    u @ jquery-3.3.1.min.js:2
    fireWith @ jquery-3.3.1.min.js:2
    fire @ jquery-3.3.1.min.js:2
    u @ jquery-3.3.1.min.js:2
    fireWith @ jquery-3.3.1.min.js:2
    ready @ jquery-3.3.1.min.js:2
    _ @ jquery-3.3.1.min.js:2
    jquery-3.3.1.min.js:2 Uncaught TypeError: $$.each is not a function
        at Object.initialize (datatableview.js:20)
        at HTMLDocument.<anonymous> ((index):17)
        at l (jquery-3.3.1.min.js:2)
        at c (jquery-3.3.1.min.js:2)

仅在不填充数据的情况下呈现表头.关于可能发生的事情的任何想法.正如我所说的，这里的大多数答案都提到并没有首先加载jquery，但这显然不是上面代码中的情况.

解决方案

我遇到了完全相同的问题.因此，而不是

<script type="text/javascript">
    $(function(){
        datatableview.initialize('.datatable');
    });
</script>

我们必须初始化数据表，以便:

<script type="text/javascript">
    var opts = {};
    var datatable = datatableview.initialize($('.datatable'), opts);
    var table = datatable.api();
</script>

在您的views.py中，而不是

class MyDatatableView(DatatableView):
    model = Revenue
    columns = ["title", "body", "created"]
    search_fields = ["title", "body"]

您必须要做的(使用DatatableView中的模型或query_set:

class MyDatatable(Datatable):
    class Meta:
        columns = ["title", "body", "created"]
        search_fields = ["title", "body"]


class MyDatatableView(DatatableView):
    model = Revenue
    datatable_class = MyDatatable

但是随后我得到了以下js essor，知道吗? 我正在使用jQuery 3.3.1和此版本的数据表: http://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js

Uncaught TypeError: datatable.api is not a function
    at HTMLDocument.<anonymous> (datatable:187)
    at c (jquery.min.js:3)
    at Object.fireWith [as resolveWith] (jquery.min.js:3)
    at Function.ready (jquery.min.js:3)
    at HTMLDocument.H (jquery.min.js:3)

我刚刚找到原因，api调用必须是api而不是api()，因为()已添加到datatableview.js中

var table = datatable.api;

我的新问题是搜索，它返回500服务器错误，错误是"FieldError('Related Field get invalid lookup:{}'.format(lookup_name))" 但是，即使我添加了要在其上搜索的列，例如"title__name"，在搜索中仍会显示警告:

DataTables警告:表ID = DataTables_Table_0-Ajax错误.有关此错误的更多信息，请参见 http://datatables.net/tn/7

I've started a new Django project with trying to test out django-datatable-view.

I'm getting a JS error saying Uncaught TypeError: $$.each is not a function. Although following the code on the library's website jQuery is being loaded before datatableview.js.

models.py

from django.db import models
class Post(models.Model):
    title= models.CharField(max_length=150)
    body = models.TextField()
    created = models.DateField()  

views.py

from datatableview.views import DatatableView
from .models import Post
class MyView(DatatableView):
    model = Post
    datatable_options = {
        'columns': [
            'title',
            'body',
            'created',
            ]
    }

urls.py

from django.urls import path
from . import views

urlpatterns = [
    path('', views.MyView.as_view(), name='myview'),
]

post_list.html

{% load static %}
<!-- myapp/mymodel_list.html -->

<!-- Load dependencies -->
<script src="https://code.jquery.com/jquery-3.3.1.min.js"
        integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
        crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.datatables.net/1.10.19/css/jquery.dataTables.min.css">
<script type="text/javascript" charset="utf8" src="https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js"></script>

<!-- Load js for initializing tables via their server-side options -->
<script type="text/javascript" charset="utf8" src="{% static 'js/datatableview.js' %}"></script>
<script type="text/javascript">
    $(function(){
        datatableview.initialize('.datatable');
    });
</script>

<!-- Render the table skeleton, includes the .datatable class for the on-ready initializer. -->
{{ datatable }}

console error:

  query-3.3.1.min.js:2 jQuery.Deferred exception: $$.each is not a 
   function TypeError: $$.each is not a function
        at Object.initialize 
   (http://127.0.0.1:8000/static/js/datatableview.js:20:12)
        at HTMLDocument.<anonymous> (http://127.0.0.1:8000/:17:23)
        at l (https://code.jquery.com/jquery-3.3.1.min.js:2:29375)
        at c (https://code.jquery.com/jquery-3.3.1.min.js:2:29677) 
    undefined
    w.Deferred.exceptionHook @ jquery-3.3.1.min.js:2
    c @ jquery-3.3.1.min.js:2
    setTimeout (async)
    (anonymous) @ jquery-3.3.1.min.js:2
    u @ jquery-3.3.1.min.js:2
    fireWith @ jquery-3.3.1.min.js:2
    fire @ jquery-3.3.1.min.js:2
    u @ jquery-3.3.1.min.js:2
    fireWith @ jquery-3.3.1.min.js:2
    ready @ jquery-3.3.1.min.js:2
    _ @ jquery-3.3.1.min.js:2
    jquery-3.3.1.min.js:2 Uncaught TypeError: $$.each is not a function
        at Object.initialize (datatableview.js:20)
        at HTMLDocument.<anonymous> ((index):17)
        at l (jquery-3.3.1.min.js:2)
        at c (jquery-3.3.1.min.js:2)

Only the table header is being rendered without the data being populated. Any ideas as to what may be going on. As I said most of the answers on here are mentioning that jquery isn't being loaded first but this clearly isn't what is going on in the code above.

解决方案

I had exactly the same issue. So instead of

<script type="text/javascript">
    $(function(){
        datatableview.initialize('.datatable');
    });
</script>

We have to init datatable so:

<script type="text/javascript">
    var opts = {};
    var datatable = datatableview.initialize($('.datatable'), opts);
    var table = datatable.api();
</script>

And in your views.py, instead of

class MyDatatableView(DatatableView):
    model = Revenue
    columns = ["title", "body", "created"]
    search_fields = ["title", "body"]

You have to do (with the model or the query_set in the DatatableView:

class MyDatatable(Datatable):
    class Meta:
        columns = ["title", "body", "created"]
        search_fields = ["title", "body"]


class MyDatatableView(DatatableView):
    model = Revenue
    datatable_class = MyDatatable

But then I get the following js essor, any idea? I'm using jQuery 3.3.1 and this version of datatable: http://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js

Uncaught TypeError: datatable.api is not a function
    at HTMLDocument.<anonymous> (datatable:187)
    at c (jquery.min.js:3)
    at Object.fireWith [as resolveWith] (jquery.min.js:3)
    at Function.ready (jquery.min.js:3)
    at HTMLDocument.H (jquery.min.js:3)

I just found the reason, the api call must be api and not api() because the () are added in the datatableview.js

var table = datatable.api;

My new issue is the search, it returns a 500 server error wichi is "FieldError('Related Field got invalid lookup: {}'.format(lookup_name))" But even if I add the column on which I want to search like "title__name", I still have the alert in the search stating:

DataTables warning: table id=DataTables_Table_0 - Ajax error. For more information about this error, please see http://datatables.net/tn/7

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