ngx-vest-forms
Version:
Opinionated template-driven forms library for Angular
180 lines • 20.1 kB
JavaScript
import { FormArray, FormGroup } from '@angular/forms';
import { ROOT_FORM } from '../constants';
/**
* Recursively calculates the path of a form control
* @param formGroup
* @param control
*/
function getControlPath(formGroup, control) {
for (const key in formGroup.controls) {
if (formGroup.controls.hasOwnProperty(key)) {
const ctrl = formGroup.get(key);
if (ctrl instanceof FormGroup) {
const path = getControlPath(ctrl, control);
if (path) {
return key + '.' + path;
}
}
else if (ctrl === control) {
return key;
}
}
}
return '';
}
/**
* Recursively calculates the path of a form group
* @param formGroup
* @param control
*/
function getGroupPath(formGroup, control) {
for (const key in formGroup.controls) {
if (formGroup.controls.hasOwnProperty(key)) {
const ctrl = formGroup.get(key);
if (ctrl === control) {
return key;
}
if (ctrl instanceof FormGroup) {
const path = getGroupPath(ctrl, control);
if (path) {
return key + '.' + path;
}
}
}
}
return '';
}
/**
* Calculates the field name of a form control: Eg: addresses.shippingAddress.street
* @param rootForm
* @param control
*/
export function getFormControlField(rootForm, control) {
return getControlPath(rootForm, control);
}
/**
* Calcuates the field name of a form group Eg: addresses.shippingAddress
* @param rootForm
* @param control
*/
export function getFormGroupField(rootForm, control) {
return getGroupPath(rootForm, control);
}
/**
* This RxJS operator merges the value of the form with the raw value.
* By doing this we can assure that we don't lose values of disabled form fields
* @param form
*/
export function mergeValuesAndRawValues(form) {
// Retrieve the standard values (respecting references)
const value = { ...form.value };
// Retrieve the raw values (including disabled values)
const rawValue = form.getRawValue();
// Recursive function to merge rawValue into value
function mergeRecursive(target, source) {
Object.keys(source).forEach((key) => {
if (target[key] === undefined) {
// If the key is not in the target, add it directly (for disabled fields)
target[key] = source[key];
}
else if (typeof source[key] === 'object' &&
source[key] !== null &&
!Array.isArray(source[key])) {
// If the value is an object, merge it recursively
mergeRecursive(target[key], source[key]);
}
// If the target already has the key with a primitive value, it's left as is to maintain references
});
}
mergeRecursive(value, rawValue);
return value;
}
function isPrimitive(value) {
return (value === null || (typeof value !== 'object' && typeof value !== 'function'));
}
/**
* Performs a deep-clone of an object
* @param obj
*/
export function cloneDeep(obj) {
// Handle primitives (null, undefined, boolean, string, number, function)
if (isPrimitive(obj)) {
return obj;
}
// Handle Date
if (obj instanceof Date) {
return new Date(obj.getTime());
}
// Handle Array
if (Array.isArray(obj)) {
return obj.map((item) => cloneDeep(item));
}
// Handle Object
if (obj instanceof Object) {
const clonedObj = {};
for (const key in obj) {
if (obj.hasOwnProperty(key)) {
clonedObj[key] = cloneDeep(obj[key]);
}
}
return clonedObj;
}
throw new Error("Unable to copy object! Its type isn't supported.");
}
/**
* Sets a value in an object in the correct path
* @param obj
* @param path
* @param value
*/
export function set(obj, path, value) {
const keys = path.split('.');
let current = obj;
for (let i = 0; i < keys.length - 1; i++) {
const key = keys[i];
if (!current[key]) {
current[key] = {};
}
current = current[key];
}
current[keys[keys.length - 1]] = value;
}
/**
* Traverses the form and returns the errors by path
* @param form
*/
export function getAllFormErrors(form) {
const errors = {};
if (!form) {
return errors;
}
function collect(control, path) {
if (control instanceof FormGroup || control instanceof FormArray) {
Object.keys(control.controls).forEach((key) => {
const childControl = control.get(key);
const controlPath = path ? `${path}.${key}` : key;
if (path && control.errors && control.enabled) {
Object.keys(control.errors).forEach((errorKey) => {
errors[path] = control.errors[errorKey];
});
}
if (childControl) {
collect(childControl, controlPath);
}
});
}
else {
if (control.errors && control.enabled) {
Object.keys(control.errors).forEach((errorKey) => {
errors[path] = control.errors[errorKey];
});
}
}
}
collect(form, '');
if (form.errors && form.errors['errors']) {
errors[ROOT_FORM] = form.errors && form.errors['errors'];
}
return errors;
}
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{ AbstractControl, FormArray, FormGroup } from '@angular/forms';\nimport { ROOT_FORM } from '../constants';\n\n/**\n * Recursively calculates the path of a form control\n * @param formGroup\n * @param control\n */\nfunction getControlPath(\n  formGroup: FormGroup,\n  control: AbstractControl\n): string {\n  for (const key in formGroup.controls) {\n    if (formGroup.controls.hasOwnProperty(key)) {\n      const ctrl = formGroup.get(key);\n      if (ctrl instanceof FormGroup) {\n        const path = getControlPath(ctrl, control);\n        if (path) {\n          return key + '.' + path;\n        }\n      } else if (ctrl === control) {\n        return key;\n      }\n    }\n  }\n  return '';\n}\n\n/**\n * Recursively calculates the path of a form group\n * @param formGroup\n * @param control\n */\nfunction getGroupPath(formGroup: FormGroup, control: AbstractControl): string {\n  for (const key in formGroup.controls) {\n    if (formGroup.controls.hasOwnProperty(key)) {\n      const ctrl = formGroup.get(key);\n      if (ctrl === control) {\n        return key;\n      }\n      if (ctrl instanceof FormGroup) {\n        const path = getGroupPath(ctrl, control);\n        if (path) {\n          return key + '.' + path;\n        }\n      }\n    }\n  }\n  return '';\n}\n\n/**\n * Calculates the field name of a form control: Eg: addresses.shippingAddress.street\n * @param rootForm\n * @param control\n */\nexport function getFormControlField(\n  rootForm: FormGroup,\n  control: AbstractControl\n): string {\n  return getControlPath(rootForm, control);\n}\n\n/**\n * Calcuates the field name of a form group Eg: addresses.shippingAddress\n * @param rootForm\n * @param control\n */\nexport function getFormGroupField(\n  rootForm: FormGroup,\n  control: AbstractControl\n): string {\n  return getGroupPath(rootForm, control);\n}\n\n/**\n * This RxJS operator merges the value of the form with the raw value.\n * By doing this we can assure that we don't lose values of disabled form fields\n * @param form\n */\nexport function mergeValuesAndRawValues<T>(form: FormGroup): T {\n  // Retrieve the standard values (respecting references)\n  const value = { ...form.value };\n\n  // Retrieve the raw values (including disabled values)\n  const rawValue = form.getRawValue();\n\n  // Recursive function to merge rawValue into value\n  function mergeRecursive(target: any, source: any) {\n    Object.keys(source).forEach((key) => {\n      if (target[key] === undefined) {\n        // If the key is not in the target, add it directly (for disabled fields)\n        target[key] = source[key];\n      } else if (\n        typeof source[key] === 'object' &&\n        source[key] !== null &&\n        !Array.isArray(source[key])\n      ) {\n        // If the value is an object, merge it recursively\n        mergeRecursive(target[key], source[key]);\n      }\n      // If the target already has the key with a primitive value, it's left as is to maintain references\n    });\n  }\n\n  mergeRecursive(value, rawValue);\n  return value;\n}\n\ntype Primitive = undefined | null | boolean | string | number | Function;\n\nfunction isPrimitive(value: any): value is Primitive {\n  return (\n    value === null || (typeof value !== 'object' && typeof value !== 'function')\n  );\n}\n\n/**\n * Performs a deep-clone of an object\n * @param obj\n */\nexport function cloneDeep<T>(obj: T): T {\n  // Handle primitives (null, undefined, boolean, string, number, function)\n  if (isPrimitive(obj)) {\n    return obj;\n  }\n\n  // Handle Date\n  if (obj instanceof Date) {\n    return new Date(obj.getTime()) as any as T;\n  }\n\n  // Handle Array\n  if (Array.isArray(obj)) {\n    return obj.map((item) => cloneDeep(item)) as any as T;\n  }\n\n  // Handle Object\n  if (obj instanceof Object) {\n    const clonedObj: any = {};\n    for (const key in obj) {\n      if (obj.hasOwnProperty(key)) {\n        clonedObj[key] = cloneDeep((obj as any)[key]);\n      }\n    }\n    return clonedObj as T;\n  }\n\n  throw new Error(\"Unable to copy object! Its type isn't supported.\");\n}\n\n/**\n * Sets a value in an object in the correct path\n * @param obj\n * @param path\n * @param value\n */\nexport function set(obj: object, path: string, value: any): void {\n  const keys = path.split('.');\n  let current: any = obj;\n\n  for (let i = 0; i < keys.length - 1; i++) {\n    const key = keys[i];\n    if (!current[key]) {\n      current[key] = {};\n    }\n    current = current[key];\n  }\n\n  current[keys[keys.length - 1]] = value;\n}\n\n/**\n * Traverses the form and returns the errors by path\n * @param form\n */\nexport function getAllFormErrors(\n  form?: AbstractControl\n): Record<string, string> {\n  const errors: Record<string, string> = {};\n  if (!form) {\n    return errors;\n  }\n\n  function collect(control: AbstractControl, path: string): void {\n    if (control instanceof FormGroup || control instanceof FormArray) {\n      Object.keys(control.controls).forEach((key) => {\n        const childControl = control.get(key);\n        const controlPath = path ? `${path}.${key}` : key;\n        if (path && control.errors && control.enabled) {\n          Object.keys(control.errors).forEach((errorKey) => {\n            errors[path] = control.errors![errorKey];\n          });\n        }\n        if (childControl) {\n          collect(childControl, controlPath);\n        }\n      });\n    } else {\n      if (control.errors && control.enabled) {\n        Object.keys(control.errors).forEach((errorKey) => {\n          errors[path] = control.errors![errorKey];\n        });\n      }\n    }\n  }\n\n  collect(form, '');\n  if (form.errors && form.errors!['errors']) {\n    errors[ROOT_FORM] = form.errors && form.errors!['errors'];\n  }\n\n  return errors;\n}\n"]}