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Theme: fix autocompletion with the POST method 

With the POST method, autocomplete.js does not URL encode the values.
For example "1+1" is sent as "1+1" which is read as "1 1" since space are URL encoded with a plus.

There is no clean way to fix the bug since autocomplete.js seems abandoned.

The commit monkey patches the ajax function of autocomplete.js

Related to #1695
This commit is contained in:
Alexandre FLAMENT 2022-08-27 06:48:30 +00:00
parent 56000d5162
commit 4a72a6b9fc
1 changed files with 37 additions and 0 deletions
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37
searx/static/themes/simple/src/js/main/search.js
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@ -68,6 +68,43 @@
}, "#" + qinput_id);
}
/*
Monkey patch autocomplete.js to fix a bug
With the POST method, the values are not URL encoded: query like "1 + 1" are sent as "1 1" since space are URL encoded as plus.
See HTML specifications:
* HTML5: https://url.spec.whatwg.org/#concept-urlencoded-serializer
* HTML4: https://www.w3.org/TR/html401/interact/forms.html#h-17.13.4.1
autocomplete.js does not URL encode the name and values:
https://github.com/autocompletejs/autocomplete.js/blob/87069524f3b95e68f1b54d8976868e0eac1b2c83/src/autocomplete.ts#L665
The monkey patch overrides the compiled version of the ajax function.
See https://github.com/autocompletejs/autocomplete.js/blob/87069524f3b95e68f1b54d8976868e0eac1b2c83/dist/autocomplete.js#L143-L158
The patch changes only the line 156 from
params.Request.send(params._QueryArg() + "=" + params._Pre());
to
params.Request.send(encodeURIComponent(params._QueryArg()) + "=" + encodeURIComponent(params._Pre()));
Related to:
* https://github.com/autocompletejs/autocomplete.js/issues/78
* https://github.com/searxng/searxng/issues/1695
*/
AutoComplete.prototype.ajax = function (params, request, timeout) {
if (timeout === void 0) { timeout = true; }
if (params.$AjaxTimer) {
window.clearTimeout(params.$AjaxTimer);
}
if (timeout === true) {
params.$AjaxTimer = window.setTimeout(AutoComplete.prototype.ajax.bind(null, params, request, false), params.Delay);
} else {
if (params.Request) {
params.Request.abort();
}
params.Request = request;
params.Request.send(encodeURIComponent(params._QueryArg()) + "=" + encodeURIComponent(params._Pre()));
}
};
if (!isMobile && document.querySelector('.index_endpoint')) {
qinput.focus();
}