@instructure/canvas-rce
Version:
A component wrapping Canvas's usage of Tinymce
53 lines (49 loc) • 2.35 kB
JavaScript
/*
* Copyright (C) 2017 - present Instructure, Inc.
*
* This file is part of Canvas.
*
* Canvas is free software: you can redistribute it and/or modify it under
* the terms of the GNU Affero General Public License as published by the Free
* Software Foundation, version 3 of the License.
*
* Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
* details.
*
* You should have received a copy of the GNU Affero General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// toQueryString does what jQuery's .param() does, only without having to bring in
// all of jQuery.
// URLSearchParams turns arrays into queries like a=1,2,3
// But our jQuery makes the older "PHP" style like a[]=1&a[]=2&a[]=3
// JQuery also magically deals with parameters that are functions, and recursive
// objects within objects, {a: 1, b: {c: 2, d: 3}, e: 4} => a=1&b[c]=2&b[d]=3&e=4
// ... so we have to do a lot of massaging with the params object before using it
// So fun!
export function toQueryString(params) {
const paramsWithIndexes = [];
// fix up the array/object indexes to match the PHP standard
const fixIndexes = elt => [elt[0].replace(/\[\d+\]$/, '[]').replace(/{/g, '[').replace(/}/g, ']'), elt[1]];
function serialize(k, elt, suffix) {
if (elt instanceof Function) {
paramsWithIndexes.push([k + suffix, elt()]);
} else if (elt instanceof Array) {
elt.forEach((k2, i) => serialize(k, k2, `${suffix}[${i}]`));
} else if (elt instanceof Object) {
Object.keys(elt).forEach(k2 => serialize(k, elt[k2], `${suffix}{${k2}}`));
} else if (typeof elt === 'boolean' || typeof elt === 'number') {
paramsWithIndexes.push([k + suffix, elt.toString()]);
} else if (typeof elt === 'undefined') {
paramsWithIndexes.push([k + suffix, 'undefined']);
} else if (elt === null) {
paramsWithIndexes.push([k + suffix, 'null']);
} else if (typeof elt === 'string') {
paramsWithIndexes.push([k + suffix, elt]);
}
}
Object.keys(params).forEach(k => serialize(k, params[k], ''));
return new URLSearchParams(paramsWithIndexes.map(fixIndexes)).toString();
}