56 lines
1.2 KiB
JavaScript
56 lines
1.2 KiB
JavaScript
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'use strict';
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function combinedKey(parentKey, elKey) {
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return parentKey + '.' + elKey;
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}
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function buildFormData(formData, data, parentKey) {
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if (Array.isArray(data)) {
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data.forEach(function buildArray(el, i) {
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buildFormData(formData, el, combinedKey(parentKey, i));
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});
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} else if (
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typeof data === 'object' &&
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!(data instanceof File || data === null)
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) {
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Object.keys(data).forEach(function buildObject(key) {
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buildFormData(
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formData,
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data[key],
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parentKey ? combinedKey(parentKey, key) : key
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);
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});
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} else {
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if (data === undefined) {
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return;
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}
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var value =
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typeof data === 'boolean' || typeof data === 'number'
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? data.toString()
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: data;
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formData.append(parentKey, value);
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}
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}
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/**
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* convert a data object to FormData
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*
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* type FormDataPrimitive = string | Blob | number | boolean
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* interface FormDataNest {
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* [x: string]: FormVal
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* }
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*
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* type FormVal = FormDataNest | FormDataPrimitive
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*
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* @param {FormVal} data
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*/
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module.exports = function getFormData(data) {
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var formData = new FormData();
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buildFormData(formData, data);
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return formData;
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};
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