SilverStripe 3.6.2 - 通过下拉选择触发 404 错误对分页数据对象进行排序
SilverStripe 3.6.2 - Sorting Paginated Data Objects by Dropdown selection triggers 404 error
几年前，我设置了一个新闻文章页面的分页列表，该列表根据下拉字段按年份排序 selection:
我现在正在尝试做同样的事情，但这次，新闻文章是数据对象。其他都一样。
问题是这次我无法让它工作，我不确定为什么。我正在执行相同的步骤，但是当我从下拉列表中 select 一年时，我被带到我网站上的 404 页面，并且在 Chrome 的“网络”选项卡中，有一个 404 状态对于 url：
我可以看到年份值没有传递给页面的代码进行处理，但我不确定为什么它在我正在处理的其他 SilverStripe 网站上确实有效——并且仍然有效从旧的 post 我链接到。
这是我现在拥有的代码：
;(function($) {
$(function(){
// hide form actions, as we want to trigger form submittal
var newsYearFilterForm = $("#Form_YearFilterForm");
// automatically when dropdown changes
newsYearFilterForm.find(".Actions").hide();
// bind a change event on the dropdown to automatically submit
newsYearFilterForm.on("change", 'select[name="Year"]', function(e){
newsYearFilterForm.submit();
});
// handle pagination clicks
$("body").on("click", "a.pagination", function (e) {
e.preventDefault();
// $("#ArticleList").addClass("loading");
$.get(
$(this).attr("href"),
function(data, status, xhr){
$("#ArticleList").replaceWith($(data));
}
);
return false;
});
});
})(jQuery);
NewsLandingPage.php
<?php
class NewsLandingPage extends Page
{
private static $description = 'News Landing page.';
private static $db = array();
private static $has_one = array();
}
class NewsLandingPage_Controller extends Page_Controller
{
private static $allowed_actions = array(
'renderNewsItem',
'YearFilterForm',
'year',
);
public function init()
{
parent::init();
}
private static $url_handlers = array(
'$NewsItem!' => 'renderNewsItem',
);
public function getAllNews()
{
$newsList = NewsItem::get()->sort('NewsDate', 'DESC');
return new PaginatedList($newsList, $this->getRequest());
}
public function renderNewsItem(SS_HTTPRequest $request)
{
$newsItemName = $request->param('NewsItem');
if ($newsItemName != "") {
$newsItem = NewsItem::get()->filterAny(array(
'NewsItemSlug' => $newsItemName
))->first();
if ($newsItem) {
$arrayData = array(
'NewsItem' => $newsItem,
);
return $this->renderWith(array('NewsArticle', 'Page'), new ArrayData($arrayData));
} else {
return $this->httpError(404);
}
}
}
public function handleYearRequest(SS_HTTPRequest $request)
{
$year = $request->param('ID');
$data = array(
'Year' => $year,
'PaginatedReleases' => $this->PaginatedReleases($year)
);
if ($request->isAjax()) {
// in case of an ajax request, render only the partial template
return $this->renderWith('ArticleList', $data);
} else {
// returning an array will cause the page to render normally
return $data;
}
}
//creates a form to filter through news releases by year
public function YearFilterForm()
{
// get an array of all distinct years
$list = SQLSelect::create()
->addFrom('NewsItem')
->selectField('YEAR("NewsDate")', 'Year')
->setOrderBy('Year', 'DESC')
->execute()->column('Year');
// create an associative array with years as keys & values
$values = array_combine($list, $list);
// our fields just contain the dropdown, which uses the year values
$fields = FieldList::create(array(
DropdownField::create(
'Year',
'',
$values,
$this->getRequest()->param('ID')
)->setHasEmptyDefault(true)
->setEmptyString('Show all')
->setAttribute('data-urlpattern', $this->Link('year') . '/YYYY')
));
$actions = new FieldList(
FormAction::create('doFilter', 'Submit')
);
return Form::create($this, 'YearFilterForm', $fields, $actions);
}
public function year()
{
return $this->handleYearRequest($this->request);
}
public function index()
{
return $this->handleYearRequest($this->request);
}
//redirects to the proper url depending on which year is selected for sorting news
public function doFilter($data, $form)
{
if (empty($data['Year'])) {
return $this->redirect($this->Link());
} else {
return $this->redirect($this->Link('year/' . $data['Year']));
}
}
//created a paginated list of news released by year
public function PaginatedReleases($year = null)
{
$list = NewsItem::get()->sort('NewsDate', 'DESC');
if ($year) {
$list = $list->where(array('YEAR("NewsDate") = ?' => $year));
}
return PaginatedList::create($list, $this->getRequest())->setLimitItems(10);
}
}
NewsItem.php
class NewsItem extends DataObject{
private static $db = array(
'NewsName' => 'Varchar(255)',
'NewsItemSlug' => 'Varchar(250)',
'NewsDate' => 'SS_Datetime',
'NewsLocation' => 'Varchar(255)',
'NewsArticle' => 'HTMLText',
'NewsArticleSummary' => 'HTMLText',
'SortOrder' => 'Int',
);
private static $summary_fields = array(
'NewsName',
'NewsDate',
'NewsItemSlug',
);
private static $has_one = array(
'NewsImage' => 'Image',
'NewsUrlForHomePage' => 'SiteTree',
'Page' => 'Page'
);
public function onBeforeWrite() {
parent::onBeforeWrite();
if ($this->NewsItemSlug == ""){
$linkName = $this::getLinkName();
if ($linkName == ""){
$linkName = str_replace(array(" ",":","%","$","#","@","!","^","&","*","(",")","'",";","<",">","/","?","[","]","{","}","\","|","`","~","=","+","’",",","."),"-",strtolower(str_replace("&","and",str_replace(".","",$this->NewsName))));
}
$this->NewsItemSlug = $linkName;
} else {
$this->NewsItemSlug = str_replace(array(" ",":","%","$","#","@","!","^","&","*","(",")","'",";","<",">","/","?","[","]","{","}","\","|","`","~","=","+","’",",","."),"-",strtolower(str_replace("&","and",str_replace(".","",$this->NewsItemSlug))));
}
}
public function getLinkName() {
if ($this->NewsItemSlug != "" && !is_null($this->NewsItemSlug)){
return $this->NewsItemSlug;
}
return str_replace(" ","-",strtolower(str_replace("&","and",$this->NewsName)));
}
public function LinkingMode() {
return Controller::curr()->getRequest()->param('ID') == $this::getLinkName() ? 'current' : 'link';
}
public function Link() {
$newsLandingPage = NewsLandingPage::get()->first();
$linkName = $this::getLinkName();
if ($linkName){
return $newsLandingPage->Link($linkName);
} else {
return false;
}
}
public function canView($member = null){
return true;
}
public function canEdit($member = null) {
return true;
}
public function canCreate($member = null) {
return true;
}
public function getCMSFields() {
$fields = parent::getCMSFields();
$fields->removeFieldFromTab("Root.Main","PageID");
return $fields;
}
}
class NewsItemAdmin extends ModelAdmin {
private static $managed_models = array(
'NewsItem',
);
private static $url_segment = 'NewsItems';
private static $menu_title = 'News';
}
NewsLandingPage.ss
<% include BreadCrumbs %>
<div class="container container-intro-copy" style="background-color:#fff;opacity:1.0;">
<h1 class="intro-copy h1">$H1</h1>
<div class="intro-copy">$Content</div>
$YearFilterForm
<% include NewsList %>
</div>
NewsList.ss
<div id="ArticleList" class="container careers-list">
<div class="row">
<% loop $PaginatedReleases %>
<div class="career-item col-lg-10 col-lg-offset-1 col-md-10 col-md-offset-1 col-sm-10 col-sm-offset-1 col-xs-12 item bio-detail aos-init aos-animate" data-aos="fade-up" data-aos-delay="200" style="margin-top:30px;">
<div class="box-for-resources top-box-style">
<div class="box-resources-left"><img src="$NewsImage.URL" class="image-resources-cmmm"></div>
<div class="box-resources-right">
<h3 class="name left" style="color:#002f65 !important; float: left; clear: both;">$NewsName</h3>
<p class="box-resource-copy text-date"><em>$NewsDate.FormatI18N('%B %d, %Y') ($NewsLocation)</em></p><br />
<div class="careers-copy">$NewsArticleSummary</div><br />
<a href="$Link">Read Article</a>
</div>
</div>
</div>
<% end_loop %>
</div>
</div>
新闻页面默认成功加载所有文章，每篇文章的链接正常。根据文章的范围，下拉表单具有正确的年份列表。
我认为你与你的 url_handlers 和你在控制器上调用的操作有冲突。
'$NewsItem!' => 'renderNewsItem',
上面这行匹配了 renderNewsItem 的所有动作。例如。 yoursite.test/controller/YearFilterForm 也将与此匹配...
您应该向显示新闻项的处理程序添加一些静态部分。所以你的 url_handlers 将是：
'show/$NewsItem!' => 'renderNewsItem',
那么您必须相应地调整您的 NewsItem->Link 方法。
我还建议您使用 URLSegmentFilter 来创建您的 slug ……例如
public function onBeforeWrite() {
parent::onBeforeWrite();
// only rebuild the slug when news-name has changed
if ($this->isChanged('NewsName', DataObject::CHANGE_VALUE)) {
$filter = URLSegmentFilter::create();
$t = $filter->filter($this->NewsName);
// Fallback to generic name if path is empty (= no valid, convertable characters)
if (!$t || $t == '-' || $t == '-1') {
$t = "news-{$this->ID}";
}
$this->NewsItemSlug = $t;
}
}
几年前，我设置了一个新闻文章页面的分页列表，该列表根据下拉字段按年份排序 selection:
我现在正在尝试做同样的事情，但这次，新闻文章是数据对象。其他都一样。
问题是这次我无法让它工作，我不确定为什么。我正在执行相同的步骤，但是当我从下拉列表中 select 一年时，我被带到我网站上的 404 页面，并且在 Chrome 的“网络”选项卡中，有一个 404 状态对于 url：
我可以看到年份值没有传递给页面的代码进行处理，但我不确定为什么它在我正在处理的其他 SilverStripe 网站上确实有效——并且仍然有效从旧的 post 我链接到。
这是我现在拥有的代码：
;(function($) {
$(function(){
// hide form actions, as we want to trigger form submittal
var newsYearFilterForm = $("#Form_YearFilterForm");
// automatically when dropdown changes
newsYearFilterForm.find(".Actions").hide();
// bind a change event on the dropdown to automatically submit
newsYearFilterForm.on("change", 'select[name="Year"]', function(e){
newsYearFilterForm.submit();
});
// handle pagination clicks
$("body").on("click", "a.pagination", function (e) {
e.preventDefault();
// $("#ArticleList").addClass("loading");
$.get(
$(this).attr("href"),
function(data, status, xhr){
$("#ArticleList").replaceWith($(data));
}
);
return false;
});
});
})(jQuery);
NewsLandingPage.php
<?php
class NewsLandingPage extends Page
{
private static $description = 'News Landing page.';
private static $db = array();
private static $has_one = array();
}
class NewsLandingPage_Controller extends Page_Controller
{
private static $allowed_actions = array(
'renderNewsItem',
'YearFilterForm',
'year',
);
public function init()
{
parent::init();
}
private static $url_handlers = array(
'$NewsItem!' => 'renderNewsItem',
);
public function getAllNews()
{
$newsList = NewsItem::get()->sort('NewsDate', 'DESC');
return new PaginatedList($newsList, $this->getRequest());
}
public function renderNewsItem(SS_HTTPRequest $request)
{
$newsItemName = $request->param('NewsItem');
if ($newsItemName != "") {
$newsItem = NewsItem::get()->filterAny(array(
'NewsItemSlug' => $newsItemName
))->first();
if ($newsItem) {
$arrayData = array(
'NewsItem' => $newsItem,
);
return $this->renderWith(array('NewsArticle', 'Page'), new ArrayData($arrayData));
} else {
return $this->httpError(404);
}
}
}
public function handleYearRequest(SS_HTTPRequest $request)
{
$year = $request->param('ID');
$data = array(
'Year' => $year,
'PaginatedReleases' => $this->PaginatedReleases($year)
);
if ($request->isAjax()) {
// in case of an ajax request, render only the partial template
return $this->renderWith('ArticleList', $data);
} else {
// returning an array will cause the page to render normally
return $data;
}
}
//creates a form to filter through news releases by year
public function YearFilterForm()
{
// get an array of all distinct years
$list = SQLSelect::create()
->addFrom('NewsItem')
->selectField('YEAR("NewsDate")', 'Year')
->setOrderBy('Year', 'DESC')
->execute()->column('Year');
// create an associative array with years as keys & values
$values = array_combine($list, $list);
// our fields just contain the dropdown, which uses the year values
$fields = FieldList::create(array(
DropdownField::create(
'Year',
'',
$values,
$this->getRequest()->param('ID')
)->setHasEmptyDefault(true)
->setEmptyString('Show all')
->setAttribute('data-urlpattern', $this->Link('year') . '/YYYY')
));
$actions = new FieldList(
FormAction::create('doFilter', 'Submit')
);
return Form::create($this, 'YearFilterForm', $fields, $actions);
}
public function year()
{
return $this->handleYearRequest($this->request);
}
public function index()
{
return $this->handleYearRequest($this->request);
}
//redirects to the proper url depending on which year is selected for sorting news
public function doFilter($data, $form)
{
if (empty($data['Year'])) {
return $this->redirect($this->Link());
} else {
return $this->redirect($this->Link('year/' . $data['Year']));
}
}
//created a paginated list of news released by year
public function PaginatedReleases($year = null)
{
$list = NewsItem::get()->sort('NewsDate', 'DESC');
if ($year) {
$list = $list->where(array('YEAR("NewsDate") = ?' => $year));
}
return PaginatedList::create($list, $this->getRequest())->setLimitItems(10);
}
}
NewsItem.php
class NewsItem extends DataObject{
private static $db = array(
'NewsName' => 'Varchar(255)',
'NewsItemSlug' => 'Varchar(250)',
'NewsDate' => 'SS_Datetime',
'NewsLocation' => 'Varchar(255)',
'NewsArticle' => 'HTMLText',
'NewsArticleSummary' => 'HTMLText',
'SortOrder' => 'Int',
);
private static $summary_fields = array(
'NewsName',
'NewsDate',
'NewsItemSlug',
);
private static $has_one = array(
'NewsImage' => 'Image',
'NewsUrlForHomePage' => 'SiteTree',
'Page' => 'Page'
);
public function onBeforeWrite() {
parent::onBeforeWrite();
if ($this->NewsItemSlug == ""){
$linkName = $this::getLinkName();
if ($linkName == ""){
$linkName = str_replace(array(" ",":","%","$","#","@","!","^","&","*","(",")","'",";","<",">","/","?","[","]","{","}","\","|","`","~","=","+","’",",","."),"-",strtolower(str_replace("&","and",str_replace(".","",$this->NewsName))));
}
$this->NewsItemSlug = $linkName;
} else {
$this->NewsItemSlug = str_replace(array(" ",":","%","$","#","@","!","^","&","*","(",")","'",";","<",">","/","?","[","]","{","}","\","|","`","~","=","+","’",",","."),"-",strtolower(str_replace("&","and",str_replace(".","",$this->NewsItemSlug))));
}
}
public function getLinkName() {
if ($this->NewsItemSlug != "" && !is_null($this->NewsItemSlug)){
return $this->NewsItemSlug;
}
return str_replace(" ","-",strtolower(str_replace("&","and",$this->NewsName)));
}
public function LinkingMode() {
return Controller::curr()->getRequest()->param('ID') == $this::getLinkName() ? 'current' : 'link';
}
public function Link() {
$newsLandingPage = NewsLandingPage::get()->first();
$linkName = $this::getLinkName();
if ($linkName){
return $newsLandingPage->Link($linkName);
} else {
return false;
}
}
public function canView($member = null){
return true;
}
public function canEdit($member = null) {
return true;
}
public function canCreate($member = null) {
return true;
}
public function getCMSFields() {
$fields = parent::getCMSFields();
$fields->removeFieldFromTab("Root.Main","PageID");
return $fields;
}
}
class NewsItemAdmin extends ModelAdmin {
private static $managed_models = array(
'NewsItem',
);
private static $url_segment = 'NewsItems';
private static $menu_title = 'News';
}
NewsLandingPage.ss
<% include BreadCrumbs %>
<div class="container container-intro-copy" style="background-color:#fff;opacity:1.0;">
<h1 class="intro-copy h1">$H1</h1>
<div class="intro-copy">$Content</div>
$YearFilterForm
<% include NewsList %>
</div>
NewsList.ss
<div id="ArticleList" class="container careers-list">
<div class="row">
<% loop $PaginatedReleases %>
<div class="career-item col-lg-10 col-lg-offset-1 col-md-10 col-md-offset-1 col-sm-10 col-sm-offset-1 col-xs-12 item bio-detail aos-init aos-animate" data-aos="fade-up" data-aos-delay="200" style="margin-top:30px;">
<div class="box-for-resources top-box-style">
<div class="box-resources-left"><img src="$NewsImage.URL" class="image-resources-cmmm"></div>
<div class="box-resources-right">
<h3 class="name left" style="color:#002f65 !important; float: left; clear: both;">$NewsName</h3>
<p class="box-resource-copy text-date"><em>$NewsDate.FormatI18N('%B %d, %Y') ($NewsLocation)</em></p><br />
<div class="careers-copy">$NewsArticleSummary</div><br />
<a href="$Link">Read Article</a>
</div>
</div>
</div>
<% end_loop %>
</div>
</div>
新闻页面默认成功加载所有文章，每篇文章的链接正常。根据文章的范围，下拉表单具有正确的年份列表。
我认为你与你的 url_handlers 和你在控制器上调用的操作有冲突。
'$NewsItem!' => 'renderNewsItem',
上面这行匹配了 renderNewsItem 的所有动作。例如。 yoursite.test/controller/YearFilterForm 也将与此匹配...
您应该向显示新闻项的处理程序添加一些静态部分。所以你的 url_handlers 将是：
'show/$NewsItem!' => 'renderNewsItem',
那么您必须相应地调整您的 NewsItem->Link 方法。
我还建议您使用 URLSegmentFilter 来创建您的 slug ……例如
public function onBeforeWrite() {
parent::onBeforeWrite();
// only rebuild the slug when news-name has changed
if ($this->isChanged('NewsName', DataObject::CHANGE_VALUE)) {
$filter = URLSegmentFilter::create();
$t = $filter->filter($this->NewsName);
// Fallback to generic name if path is empty (= no valid, convertable characters)
if (!$t || $t == '-' || $t == '-1') {
$t = "news-{$this->ID}";
}
$this->NewsItemSlug = $t;
}
}