我可以使用ng-repeat标签显示一个表中的数据。但问题是当我尝试根据之前的ng-repeat显示来自另一个表的数据时。
详细说明我有2个表格用于部分
section_id section_name
1 php
2 java
另一张桌子是讲座
id section_id lecture_name
1 2 basics
2 1 loops
我可以使用ng-repeat显示部分。但我不能在相应的部分下面展示讲座
<div class="course_curriculum " ng-repeat="section in sections">
<ul class="sections" >
<h4>Section {{$index+1}}: {{section.section_name}}</h4>
<!--<h4>Section 1: Introduction to Mobile Application Development</h4>-->
<li>
<div class="section-head" ng-click="view_lecture(section.id)" data-toggle="collapse" data-target="#section{{$index+1}}" >
<i class="fa fa-bars" aria-hidden="true"></i> Course Lectures
</div>
<ul id="section{{$index+1}}" class="collapse" >
<li>
<ul ng-repeat="lecture in lectures">
<li >
<div class="section-sub-head" data-toggle="collapse" data-target="#sub1">
<i class="fa fa-bars" aria-hidden="true"></i> {{lecture.lecture_name}}
</div>
<ul id="sub1" class="collapse lecture">
<li>
<div class="col-md-5 article-show" >
<img src="html/img/file.png" style="width: 100px; background-color: black ;margin-right: 10px" />
Article<br>
<a data-toggle="modal" data-target="#text"><i class="fa fa-pencil" aria-hidden="true"></i> Edit Content</a> <br>
<a href="#" ><i class="fa fa-play" aria-hidden="true"></i> Replace With Video</a> <br>
</div>
<div class="col-md-5 right text-right" >
<div class="btn-group" role="group">
<button type="button" class="publish">Publish</button>
</div>
<div class="btn-group" role="group">
<button type="button" class="Preview dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Preview
<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="resources">As Instructor</a></li>
<li><a href="#">As Student</a></li>
</ul>
</div>
</div>
<div class="clearfix"></div>
<div class="col-md-12">
<button type="button" data-toggle="collapse" data-target="#Resources1" class="publish">Add Resources</button>
<button type="button" class="publish">Add Captions</button>
</div>
<div id="Resources1" class="collapse lecture">
<ul class="resouse">
<li class="active"><a data-toggle="tab" href="#Downloadable-File">Downloadable File</a></li>
<li><a data-toggle="tab" href="#from-Library">Add from Library</a></li>
<li><a data-toggle="tab" href="#External-Resource">External Resource</a></li>
<li><a data-toggle="tab" href="#Source-Code">Source Code</a></li>
</ul>
<div class="tab-content">
<div id="Downloadable-File" class="tab-pane fade in active">
<br/>
<div class="col-md-8">
<input type="text" class="form-control" placeholder="Add files no larger than 1.0 GiB." disabled>
</div>
<div class="col-md-4">
<label class="upload">
upload file<input type="file" style="display: none;">
</label>
</div>
<p>Tip: A resource is for any type of document that can be used to help students in the lecture.
This file is going to be seen as a lecture extra. Make sure everything is legible! </p>
</div>
<div id="from-Library" class="tab-pane fade">
<br/>
<p>Library is empty. Tip: You can use Accounts.academy File Uploader to upload several files at the same time. </p>
</div>
<div id="External-Resource" class="tab-pane fade">
<br/>
<div class="col-md-12">
<div class="form-group">
<label for="usr">Title:</label>
<input type="text" class="form-control" placeholder="A descriptive title" id="usr">
</div>
<div class="form-group">
<label for="pwd">URL:</label>
<input type="password" class="form-control" placeholder="https://example.com" id="pwd">
</div>
<button type="submit" value="Submit" class="publish">Submit</button>
</div>
</div>
<div id="Source-Code" class="tab-pane fade">
<br/>
<div class="col-md-8">
<input type="text" class="form-control" placeholder="Add files no larger than 1.0 GiB." disabled>
</div>
<div class="col-md-4">
<label class="upload">
upload File<input type="file" style="display: none;">
</label>
</div>
<p><B>Tip</B>: Only available for Python and Ruby for now. You can upload .py and .rb files</p>
</div>
</div>
</div>
<div class="clearfix"></div>
</li>
<li>
<button type="button" data-toggle="modal" data-target="#saudio" class="sub-sub-section-add">Add Audio</button>
<button type="button" data-toggle="modal" data-target="#svideo" class="sub-sub-section-add">Add Video</button>
<button type="button" data-toggle="modal" data-target="#stext" class="sub-sub-section-add">Add Text/Article</button>
<button type="button" data-toggle="modal" data-target="#stext" class="sub-sub-section-add">Add File</button>
</li>
</ul>
</li>
</ul>
</li>
<li >
<div class="section-sub-head">
<form ng-submit="lecture_insert($index+1,section.id)">
<input type="text" class="form-control" id=lecture_name{{$index+1}} ng-model="section.lecture_name" placeholder="Enter a Title" required>
<!--<input type="text" ng-hide class="form-control" id=section_id{{$index+1}} ng-model="section.id" >-->
<div class="btn-group sub-section-add">
<button type="submit" style="background: rgba(0,0,0,0); border: none;">Add Lecture</button>
</div>
</form>
</div>
</li>
</ul>
</li>
<li>
<div class="section-head" data-toggle="collapse" data-target="#faq{{$index+1}}" >
<i class="fa fa-bars" aria-hidden="true"></i> FAQ
</div>
<ul id="faq{{$index+1}}" class="collapse">
<li>
<button type="button" data-toggle="modal" data-target="#mainfaq" class="section-add">Add More Faq</button>
</li>
<li>
<strong>What is the target audience? </strong><br/>
<P>This course is for those how want to learn how to design a logo,This course is for those how want to learn how to design a logo</P>
<button type="button" class="section-edit">Edit</button>
</li>
<li>
<strong>What is the target audience? </strong><br/>
<P>This course is for those how want to learn how to design a logo,This course is for those how want to learn how to design a logo</P>
<button type="button" class="section-edit">Edit</button>
</li>
<li>
<strong>What is the target audience? </strong><br/>
<P>This course is for those how want to learn how to design a logo,This course is for those how want to learn how to design a logo</P>
<button type="button" class="section-edit">Edit</button>
</li>
</ul>
</li>
<li>
<div class="section-head" data-toggle="collapse" data-target="#Exam{{$index+1}}" >
<i class="fa fa-bars" aria-hidden="true"></i> Exam
</div>
<ul id="Exam{{$index+1}}" class="collapse">+
<li >
<div class="section-sub-head">
fgfgh
</div>
<ul >
<li>
df
</li>
<li>
df
</li>
</ul>
</li>
</ul>
</li>
<li>
<!--<div class="btn-group section-add">-->
<!--<button data-toggle="modal" data-target="#lecture" type="button" style="background: rgba(0,0,0,0); border: none;">Add Lecture</button>-->
<!--</div>-->
<!--<div class="btn-group section-add">-->
<!--<button data-toggle="modal" data-target="#exam" type="button" style="background: rgba(0,0,0,0); border: none;">Add Exam</button>-->
<!--</div>-->
<!--<div class="btn-group section-add">-->
<!--<button data-toggle="modal" data-target="#mainfaq" type="button" style="background: rgba(0,0,0,0); border: none;">Add FAQ</button>-->
<!--</div>-->
</li>
</ul>
</div>
答案 0 :(得分：1)
由于您希望根据上述section_id有条件地展示讲座，因此您可以使用ng-if来获得所需的结果。
E.g。
<div class="section" ng-repeat="sec in sections">
<span>Section Id: <i>{{sec.section_id}}</i></span>
<span>Section Name: <i>{{sec.section_name}}</i></span>
<div class="lecture" ng-repeat="lec in lectures" ng-if="lec.section_id==sec.section_id"> <!--nested ng-repeat for lectures-->
<span>Lecture Id: <i>{{lec.lecture_id}}</i></span>
<span>Lecture Name: {{lec.lecture_name}}</span>
</div>
</div>
在JS中我的数据采用以下格式：
$scope.sections=[
{section_id:1,section_name:"php"},
{section_id:2,section_name:"java"}
];
$scope.lectures = [
{section_id:1,lecture_id:2,lecture_name:"basics"},
{section_id:2,lecture_id:1,lecture_name:"loops"}
];
我已准备好JSBIN，以便您了解正在发生的事情。
答案 1 :(得分：1)
提供的代码中有几个 可能的 问题：
ng-repeat位于错误的元素上。它应位于其正上方的<li>元素上。在bootstrap中嵌套列表时，你永远不会重复<ul>而不将每个列表包裹在至少<li>（通常也是<a>，其中包含下拉文本）。lectures变量位于每个section上。这会使您的内部 ng-repeat类似于="lecture in section.lectures"。Here is a working JSBin我在上面列出了我所做的更改。我省略了很多HTML，因为它在没有其他控制器的情况下被破坏了，但我留下了足够的内容来显示如何使嵌套重复工作。