49 lines
1.3 KiB
TypeScript
49 lines
1.3 KiB
TypeScript
import { error } from "@sveltejs/kit";
|
|
|
|
/**
|
|
* Obtain the value of the key "id" and remove it from the FormData.
|
|
* Throws SvelteKit error(400) if "id" is not found.
|
|
*/
|
|
export const form_data_get_and_remove_id = (data: FormData): string => {
|
|
const id: string | undefined = data.get("id")?.toString();
|
|
if (!id) error(400, "Missing ID");
|
|
data.delete("id");
|
|
return id;
|
|
};
|
|
|
|
/**
|
|
* Remove empty fields and files from FormData objects.
|
|
*/
|
|
export const form_data_clean = (data: FormData): FormData => {
|
|
for (const [key, value] of data.entries()) {
|
|
if (value === "") {
|
|
// Remove empty keys
|
|
data.delete(key);
|
|
} else if (
|
|
// Remove empty files
|
|
typeof value === "object" &&
|
|
value !== null &&
|
|
"size" in value &&
|
|
value.size === 0
|
|
) {
|
|
data.delete(key);
|
|
}
|
|
}
|
|
|
|
return data;
|
|
};
|
|
|
|
/**
|
|
* Throws SvelteKit error(400) if form_data does not contain key.
|
|
*/
|
|
export const form_data_ensure_key = (data: FormData, key: string): void => {
|
|
if (!data.get(key)) error(400, `Key "${key}" missing from form_data!`);
|
|
};
|
|
|
|
/**
|
|
* Throws SvelteKit error(400) if form_data does not contain all keys.
|
|
*/
|
|
export const form_data_ensure_keys = (data: FormData, keys: string[]): void => {
|
|
keys.map((key) => form_data_ensure_key(data, key));
|
|
};
|