如何在重新访问同一链接后将文本放在原始空间？
我的问题听起来有点令人困惑。让我详细解释一下我的要求是什么。我正在使用php，smarty，ajax和jquery。 我正在放置一个Web地址，并将查询字符串中的一个值传递给页面，如下所示：
http://localhost/schooling_needs/sneeds1.0/web/teacher_details.php?teacher_id=5ed39ad1bce91ebc071f859cc76dea66
然后加载以下页面（附加屏幕截图）。
然后如果单击任何类名称它的主题被显示，我使用jquery的ajax（）方法来实现这一点。然后，如果我点击任何一个主题然后显示该主题的章节，我也使用ajax（）为此。它看起来像附在屏幕截图中。
现在当我点击章节列表中的任何章节时，页面会重定向到下一页。我以查询字符串的形式通过超链接传递了几个值（您将从代码中了解这些值）。然后在此屏幕截图中显示新页面。
现在从这里开始我的问题开始了，当我点击Back链接时，我希望看到每个东西，因为当我点击主题章节，但实际上它看起来如何附加在这个
屏幕射击。实际上它应该像屏幕截图2中那样显示
从屏幕截图中可以看到，内容显示在左下角。发生这种情况是因为我在后续请求中首先使用ajax，但是当我点击Back链接时，ajax没有被调用，因此它没有显示在正确的位置。 作为参考，我将提供我的PHP文件代码以及智能模板文件：
teacher_details.php
<?php
require_once("includes/public-application-header.php");
ob_start();
prepare_request();
$request = empty( $_GET ) ? $_POST : $_GET ;
$op = $request['op'];
$objTeacherDetails = new TeacherDetails();
if (isset($_GET['teacher_id'])){
$teacher_id = $_GET['teacher_id'];
$_SESSION['teacher_id'] = $teacher_id;
} elseif (isset($_SESSION['teacher_id'])) {
$teacher_id = $_SESSION['teacher_id'];
}
$teacher_classes = $objTeacherDetails->GetAllClassesByTeacherId($teacher_id);
$smarty->assign('teacher_classes', $teacher_classes);
$file_to_show = "teacher-details.tpl";
switch( $op ) {
case "get_assigned_subject_list":
$objClassSubjects = new ClassSubjects();
$objSubjects = new Subjects();
$class_id = $request['class_id'];
$all_subjects = $objSubjects->GetAllSubjects();
$subject_details = $objClassSubjects-> GetClassSubjectDetailsById($class_id);
$smarty->assign('all_subjects', $all_subjects);
$smarty->assign('subject_details', $subject_details);
$smarty->assign('teacher_id', $teacher_id);
$smarty->assign('class_id', $class_id);
$smarty->display("assigned-subject-list.tpl");
die();
break;
case "get_subject_chapter_list":
$objChapters = new AdminChapters();
$cs_map_id = $request['cs_map_id'];
$class_id = $request['class_id'];
$chapter_details = $objChapters->GetAllChaptersBycsmapId($cs_map_id);
$smarty->assign('class_id', $class_id);
$smarty->assign('teacher_id', $teacher_id);
$smarty->assign('cs_map_id', $cs_map_id);
$smarty->assign('chapter_details', $chapter_details);
$smarty->display("chapter-by-subject.tpl");
die();
break;
case "back":
$objClassSubjects = new ClassSubjects();
$objSubjects = new Subjects();
$objChapters = new AdminChapters();
$teacher_id = $request['teacher_id'];
$class_id = $request['class_id'];
$cs_map_id = $request['cs_map_id'];
$all_subjects = $objSubjects->GetAllSubjects();
$subject_details = $objClassSubjects-> GetClassSubjectDetailsById($class_id);
$chapter_details = $objChapters->GetAllChaptersBycsmapId($cs_map_id);
$smarty->assign('all_subjects', $all_subjects);
$smarty->assign('subject_details', $subject_details);
$smarty->assign('teacher_id', $teacher_id);
$smarty->assign('class_id', $class_id);
$smarty->display("assigned-subject-list.tpl");
$smarty->assign('class_id', $class_id);
$smarty->assign('teacher_id', $teacher_id);
$smarty->assign('cs_map_id', $cs_map_id);
$smarty->assign('chapter_details', $chapter_details);
$smarty->display("chapter-by-subject.tpl");
//die();
//break;
}
$smarty->assign("file_to_show", $file_to_show);
$smarty->display("index.tpl");
?>
class_details.php
<?php
require_once("includes/public-application-header.php");
ob_start();
prepare_request();
$request = empty( $_GET ) ? $_POST : $_GET ;
$class_id = $request['class_id'];
$teacher_id = $request['teacher_id'];
$cs_map_id = $request['cs_map_id'];
$chapter_id = $request['chapter_id'];
$op = $request['op'];
switch( $op ) {
case "get_chapter_theory":
$objChapters = new AdminChapters();
$chapter_theory_details = $objChapters->GetChapterDetailsByID($chapter_id);
$smarty->assign('class_id', $class_id);
$smarty->assign('teacher_id', $teacher_id);
$smarty->assign('cs_map_id', $cs_map_id);
$smarty->assign('chapter_theory_details', $chapter_theory_details);
$smarty->display("chapter-theory-by-chapter.tpl");
die();
break;
case "get_chapter_questions":
$objChapterQuestions = new ChapterQuestions();
$chapter_questions = $objChapterQuestions->GetChapterQuestionByChapterID($chapter_id);
$smarty->assign('chapter_questions', $chapter_questions);
$smarty->display("chapter-questions-by-chapter.tpl");
die();
break;
case "get_chapter_ppts":
$objChapterPpts = new ChapterPpts();
$chapter_ppts = $objChapterPpts->GetChapterPptsByPptChapterID($chapter_id);
$smarty->assign('chapter_ppts', $chapter_ppts);
$smarty->display("chapter-ppts-by-chapter.tpl");
die();
break;
case "get_chapter_mcqs":
$objChapterMcqQuestions = new ChapterMcqQuestions();
$chapter_mcqs = $objChapterMcqQuestions->GetChapterMcqQuestionsByChapterID($chapter_id);
$smarty->assign('chapter_mcqs', $chapter_mcqs);
$smarty->display("chapter-mcqs-by-chapter.tpl");
die();
break;
case "get_chapter_yvideos":
$objChapterYoutubeVideos = new ChapterYoutubeVideos();
$chapter_yvideos = $objChapterYoutubeVideos->GetYoutubeVideoByChapterID($chapter_id);
$smarty->assign('chapter_yvideos', $chapter_yvideos);
$smarty->display("chapter-yvideos-by-chapter.tpl");
die();
break;
}
?>
teacher_details.tpl
{literal}
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript">
function get_subjects_by_class(class_id) {
$.ajax({
url: "teacher_details.php",
type: "POST",
data: {'request_type':'ajax', 'op':'get_assigned_subject_list', 'class_id':class_id},
success: function(data) {
$('#subject_container').html(data);
}
});
}
</script>
{/literal}
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="0" >
<tr>
<td align="left" valign="top">
<h3>Teacher Details</h3>
</td>
</tr>
</table>
<table width="99%" border="0" cellpadding="0" cellspacing="0" class="manage_box" >
<tr>
<td>
<form>
<table>
<tr>
<td align="center">
{if $teacher_classes}
Classes
</td>
{if $teacher_classes}
{foreach from=$teacher_classes item="class"}
</tr>
<tr>
<td valign="top" align="center" width="20">
<a href="#" onClick="get_subjects_by_class({$class.class_id}); return false;">{$class.class_name}</a>
</td>
{/foreach}
{/if}
</tr>
{/if}
</table>
</form>
</td>
<td align="left" id="subject_container" valign="top">
</td>
<td align="left" id="chapter_container" valign="top">
</td>
</tr>
</table>
分配专科list.tpl
{literal}
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript">
function get_chapters_by_subject(cs_map_id,class_id) {
$.ajax({
url: "teacher_details.php",
type: "POST",
data: {'request_type':'ajax', 'op':'get_subject_chapter_list', 'cs_map_id':cs_map_id, 'class_id':class_id},
success: function(data) {
$('#chapter_container').html(data);
}
});
}
</script>
{/literal}
<form>
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td align="center">
{if $subject_details}
Subjects
</td>
{foreach from=$all_subjects item=subjects}
</tr>
<tr>
<td align="center" valign="top" width="150">
{foreach from=$subject_details item=subject}
{if $subject.cs_subject_id==$subjects.subject_id}<a href="#" onClick="get_chapters_by_subject({$subject.cs_map_id},{$class_id}); return false;">{$subjects.subject_name}</a>{/if}
{/foreach}
</td>
{/foreach}
</tr>
{/if}
</table>
</form>
章逐subject.tpl
<form>
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td align="center">
{if $chapter_details}
Chapters
</td>
</tr>
{foreach from=$chapter_details item=chapter}
<tr>
<td align="center" valign="top" width="150">
<a href="{$site_url}chapter_details.php?class_id={$class_id}&teacher_id={$teacher_id}&cs_map_id={$cs_map_id}&chapter_id={$chapter.chapter_id}&op=get_chapter_theory" title="Chapter's Theory">{$chapter.chapter_title}</a>
</td>
</tr>
{/foreach}
{/if}
</table>
</form>
章理论逐chapter.tpl
{literal}
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript">
function get_chapter_details(op,chapter_id) {
$.ajax({
url: "chapter_details.php",
type: "POST",
data: {'request_type':'ajax', 'op':op, 'chapter_id':chapter_id},
success: function(data) {
$('#chaper_data_container').html(data);
}
});
}
</script>
{/literal}
<form>
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td align="center" colspan="5">
{if $chapter_theory_details}
<h2>Chapter's Theory</h2>
</td>
</tr>
<tr>
<td align="center">
<b><a href="#" onClick="get_chapter_details('get_chapter_questions',{$chapter_theory_details.chapter_id}); return false;">Chapter Questions</a></b>
</td>
<td align="center">
<b><a href="#" onClick="get_chapter_details('get_chapter_ppts',{$chapter_theory_details.chapter_id}); return false;">Chapter PPTs</a></b>
</td>
<td align="center">
<b><a href="#" onClick="get_chapter_details('get_chapter_mcqs',{$chapter_theory_details.chapter_id}); return false;">Chapter MCQs</a></b>
</td>
<td align="center">
<b><a href="#" onClick="get_chapter_details('get_chapter_yvideos',{$chapter_theory_details.chapter_id}); return false;">Chapter Youtube Videos</a></b>
</td>
<td align="center">
<b><a href="{$site_url}teacher_details.php?class_id={$class_id}&teacher_id={$teacher_id}&cs_map_id={$cs_map_id}&op=back" title="Chapter's Theory">
Back</a></b>
</td>
</tr>
<tr>
<td align="center" valign="top" colspan="5">
{$chapter_theory_details.chapter_data}
</td>
</tr>
{/if}
</table>
<div id="chaper_data_container">
</div>
</form>
现在有人可以帮助我在点击后退按钮后将问题放在适当的位置吗？提前致谢。
1 个答案:
答案 0 :(得分：1)
您的问题是AJAX响应不会在历史堆栈中持久存在。您可以通过多种方式解决此问题。但首先请阅读discussion on this here。
- 根据建议in one of the answer 使用html5历史记录api或html5本地存储空间
- 使用基于哈希的简单解决方案。为此，请使用简单的hash history plugin或write your own code。
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