@webdev-tools/ng-nested-reactive-forms
Version:
Implement Nested FormControl for Angular Reactive Forms.
78 lines • 11.1 kB
JavaScript
import * as tslib_1 from "tslib";
import { Injectable } from '@angular/core';
var NrfModelSetterService = (function () {
function NrfModelSetterService() {
var _this = this;
this.getTargetPropToSet = function (obj, key, i, pathPieces) {
var nextKey = pathPieces[i + 1];
var isLast = nextKey == null;
nextKey = nextKey || pathPieces['finalKey'];
var isArrayKey = _this.isArrayKey(nextKey);
var prop = obj[key];
if (!prop) {
prop = isArrayKey ? [] : {};
obj[key] = prop;
}
else if (isLast) {
prop = isArrayKey ? tslib_1.__spread(prop) : tslib_1.__assign({}, prop);
obj[key] = prop;
}
return prop;
};
}
NrfModelSetterService.prototype.getValue = function (path, model, separator) {
if (separator === void 0) { separator = '.'; }
if (path == null || !model) {
return null;
}
try {
var pathPieces = this.generatePathPieces(path, separator);
return pathPieces.reduce(this.piecesReducer, model) || null;
}
catch (err) {
return null;
}
};
NrfModelSetterService.prototype.piecesReducer = function (obj, key) {
return key === '' ? obj.slice(-1)[0] : obj[key];
};
NrfModelSetterService.prototype.setValue = function (path, value, model, separator) {
if (separator === void 0) { separator = '.'; }
if (!(path && model)) {
return null;
}
try {
var pathPieces = this.generatePathPieces(path, separator);
var finalKey = pathPieces.pop();
(((pathPieces)))['finalKey'] = finalKey;
var targetProp = pathPieces.reduce(this.getTargetPropToSet, model) || null;
if (finalKey === '') {
targetProp.push(value);
}
else {
targetProp[finalKey] = value;
}
}
catch (err) {
console.error('NestedProps setValue error: ', err);
}
};
NrfModelSetterService.prototype.isArrayKey = function (key) {
return key === '' || !isNaN(parseInt(key, 10));
};
NrfModelSetterService.prototype.generatePathPieces = function (path, separator) {
return path
.replace('[', separator)
.replace(']', '')
.split(separator);
};
NrfModelSetterService.decorators = [
{ type: Injectable }
];
return NrfModelSetterService;
}());
export { NrfModelSetterService };
if (false) {
NrfModelSetterService.prototype.getTargetPropToSet;
}
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obj.slice(-1)[0] : obj[key];\n  }\n\n  /**\n   * Set a value using a dot-notation string.\n   *\n   * If the property does not exists, the entire path will be created.\n   *\n   * @param path Dot notation of the value to be get\n   * @param value The value to be set\n   * @param model An object or an Array\n   * @param separator An optional param to specify a different separator, default '.'\n   *\n   * ```typescript\n   * nestedProps.setValue('user.age', 35, { user: { name: 'John Doe' } });\n   * ```\n   */\n  setValue(path: string, value: any, model: object | any[], separator = '.'): void {\n    // TODO remove the empty key feature, force users to define the desired array key\n    if (!(path && model)) {\n      return null;\n    }\n\n    try {\n      const pathPieces = this.generatePathPieces(path, separator);\n      const finalKey = pathPieces.pop();\n      (<any>pathPieces)['finalKey'] = finalKey;\n\n      const targetProp = pathPieces.reduce(this.getTargetPropToSet, model) || null;\n\n      if (finalKey === '') {\n        targetProp.push(value);\n      } else {\n        targetProp[finalKey] = value;\n      }\n    } catch (err) {\n      console.error('NestedProps setValue error: ', err);\n    }\n  }\n\n  /**\n   * Get the final property of the dot notation path.\n   * This will be the property that will receive the new value\n   */\n  private getTargetPropToSet = (obj: any, key: string, i: number, pathPieces: any): any[] | any => {\n    let nextKey = pathPieces[i + 1];\n    const isLast = nextKey == null;\n\n    nextKey = nextKey || pathPieces['finalKey'];\n\n    const isArrayKey = this.isArrayKey(nextKey);\n    let prop = obj[key];\n\n    if (!prop) {\n      prop = isArrayKey ? [] : {};\n      obj[key] = prop;\n    } else if (isLast) {\n      prop = isArrayKey ? [...prop] : { ...prop };\n      obj[key] = prop;\n    }\n\n    return prop;\n  };\n\n  /**\n   * @ignore\n   * Internal function to define if a given key is for an array or an object\n   */\n  private isArrayKey(key: string): boolean {\n    return key === '' || !isNaN(parseInt(key, 10));\n  }\n\n  /**\n   * Generate the dot-notation path as an Array to iterate over.\n   */\n  private generatePathPieces(path: string, separator: string): string[] {\n    return path\n      .replace('[', separator)\n      .replace(']', '')\n      .split(separator);\n  }\n}\n"]}