I'm running into trouble accessing global variables when I make an AJAX call to a php function in the MediaWiki framework.
My jQuery AJAX call looks like this:
jQuery.ajax({
url: 'GeneralFunctions.php',
type: 'GET',
dataType: 'json',
data: {
text: anchorText
},
success: function (data) {
alert("data: " + data);
}
});
My GeneralFunctions.php file looks like this:
<?php
if (isset($_GET['text'])) {
jsonInlineParse((string) $_GET['text']);
}
function jsonInlineParse($wikiText)
{
global $wgOut;
$return = $wgOut->parseInline($wikiText); //fails here
echo json_encode($return);
}
?>
When I run the jQuery call through a click event I get as far as the parseInline() function. The global variable is never defined in the scope and I get the error:
: Call to a member function parseInline() on a non-object in on line :在第行的的非对象上调用成员函数parseInline()
I'm not sure how to make the parse call and define the global variable when the AJAX call is made?
UPDATE
$wgOut is the OutputPage object associated with MediaWiki. It holds all the HTML of the page and is used throughout the MediaWiki framework to add content to a page or article. It is used on the server side to create customized output for wiki articles. I use it to create forms or add HTML on many of our wikis.
More info here: http://www.mediawiki.org/wiki/Manual :$wgOut
UPDATE 2
@Juhana I changed my function to look like this which results in the same error as before. Each echo outputs "NULL".
<?php
function jsonInlineParse($wikiText)
{
include_once '/path/to/file/includes/OutputPage.php';
include_once '/path/to/file/includes/parser/Parser.php';
echo var_dump($wgOut);
global $wgOut;
echo var_dump($wgOut);
$return = $wgOut->parseInline($wikiText);
echo $return;
echo json_encode($return);
}
?>
I took a different approach after running into global variable problems. I changed the AJAX call I was making and the code below works very well for me. I'm using the editable jquery table you can find here .
PHP
function ajax_parse(){
global $wgRequest;
if($wgRequest->wasPosted()){
$text = $wgRequest->getVal("text");
wfDebug("Recieving::::".$text);
if(!strpos($text, "href")){
$text = myInlineParse($text);
$text = str_replace("<pre>", "", $text);
$text = str_replace("</pre>", "", $text);
}
wfDebug("Returning::::".$text);
echo $text;
}
exit;
}
function myInlineParse( $wikiText ) {
global $wgOut;
return $wgOut->parseInline( $wikiText );
}
JavaScript
// inject wikitext after hitting save
function postSave(o) {
var response = new Array("");
for(var i=0;i<o.row.length;i++){
new Ajax.Request(wgScript +'/Special:EditClass/ajax_parse',
{
asynchronous: false,
parameters: {'text': o.row[i].innerHTML},
onSuccess: function(text){
response.push(text.responseText);
}
}
);
}
return response;
}
For whatever reasons, extensions don't seem to have access to $wgOut
. I solved this for my extension by using the hook: OutputPageParserOutput
for the code I needed output (I needed to inject some scripts and stylesheets as well as using another hook to modify links and didn't want to bother with Resource_Loader though it is useful and recommended):
$wgHooks['OutputPageParserOutput'][] = array($this, 'doOutputPageParserOutput'); // 'doOutputPageParserOutput' defined as method in my class
As with other hooks, you can get rid of the array in favor of just a function name if you don't want to execute within a class.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.