59 lines
1.3 KiB
JavaScript
59 lines
1.3 KiB
JavaScript
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/*
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This module provides easy access to the CSRF token and caches
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it for re-use. It also exposes some values commonly used in relation
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to the CSRF token (header key and headers object).
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If you need to refresh the csrfToken for some reason, just call `init` and
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then use the accessors as you would normally.
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If you need to compose a headers object, use the spread operator:
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```
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headers: {
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...csrf.headers,
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someOtherHeader: '12345',
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}
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```
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see also http://guides.rubyonrails.org/security.html#cross-site-request-forgery-csrf
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and https://github.com/rails/jquery-rails/blob/v4.3.1/vendor/assets/javascripts/jquery_ujs.js#L59-L62
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*/
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const csrf = {
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init() {
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const tokenEl = document.querySelector('meta[name=csrf-token]');
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if (tokenEl !== null) {
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this.csrfToken = tokenEl.getAttribute('content');
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} else {
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this.csrfToken = null;
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}
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},
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get token() {
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return this.csrfToken;
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},
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get headerKey() {
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return 'X-CSRF-Token';
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},
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get headers() {
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if (this.csrfToken !== null) {
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return {
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[this.headerKey]: this.token,
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};
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}
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return {};
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},
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};
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csrf.init();
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// use our cached token for any $.rails-generated AJAX requests
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if ($.rails) {
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$.rails.csrfToken = () => csrf.token;
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}
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export default csrf;
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