@codeforges/ng-forms/dist/models/NgDynamicFormsModel.js

Angular 4+ Dynamic form builder, decorate your models to generate forms or create them manually

import * as _ from "lodash";
import { NgFormsMetadataKeys } from "../utils/decorators/NgFormsMetadataKeys";
import { BaseInputFactory } from "../inputs/base/BaseInputFactory";
import { FormFieldType } from "../utils/FormFieldType";
import { SelectOption } from "../inputs/SelectOption";
import 'reflect-metadata';
export class NgDynamicFormsModel {
    constructor() {
        this.inputs = [];
    }
    getFormFields() {
        if (_.isEmpty(this.inputs)) {
            _.forOwn(this, (value, propertyKey) => {
                const formFieldOptions = this.getNgFormFieldMetadata(propertyKey);
                if (formFieldOptions) {
                    formFieldOptions.fieldName = formFieldOptions.fieldName || propertyKey;
                    const selectOptions = this.buildSelectOptions(formFieldOptions, value);
                    this.inputs.push(this.buildBaseInput(formFieldOptions, value.toString(), selectOptions));
                }
            });
        }
        return this.inputs;
    }
    buildBaseInput(formFieldOptions, value, selectOptions) {
        const params = this.hasSelectOptions(formFieldOptions) ?
            { selectOptions: selectOptions } : { value: value };
        return BaseInputFactory.build(formFieldOptions.fieldType, formFieldOptions.fieldName, params);
    }
    hasSelectOptions(formFieldOptions) {
        return formFieldOptions.fieldType === FormFieldType.SELECT
            || formFieldOptions.fieldType === FormFieldType.RADIO;
    }
    buildSelectOptions(formFieldOptions, value) {
        let selectOptions;
        if (this.hasSelectOptions(formFieldOptions)) {
            selectOptions = _.map(value, (element) => {
                return new SelectOption(element[formFieldOptions.selectOptionKeys.labelKey], element[formFieldOptions.selectOptionKeys.valueKey]);
            });
        }
        return selectOptions;
    }
    getNgFormFieldMetadata(propertyKey) {
        return Reflect.getMetadata(NgFormsMetadataKeys.NG_FORM_FIELD, this, propertyKey);
    }
}
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