liangchengyou / wow_english

  import 'dart:convert';
  

  import 'package:wow_english/generated/json/base/json_field.dart';
  import 'package:wow_english/generated/json/course_module_entity.g.dart';
  

  @JsonSerializable()

  class CourseModuleEntity {

    int? id;

    String? code;
    int? courseModuleThemeId;
    int? courseTotal;
    String? coverUrl;
    String? createTime;
    String? deleted;
    String? des;
    String? modifyTime;
    String? name;
    int? opening;
    String? picUrl;
    int? sortOrder;
    int? status;

    String? courseModuleThemeColor;

    // 无参构造函数
    CourseModuleEntity.empty();

    // 命名构造函数
    CourseModuleEntity(
        {int? id,
        String? code,
        String? courseModuleName,
        String? courseModuleThemeColor});
  
    factory CourseModuleEntity.fromJson(Map<String, dynamic> json) =>
        $CourseModuleEntityFromJson(json);

    Map<String, dynamic> toJson() => $CourseModuleEntityToJson(this);

    // Factory constructor for creating an instance with only three parameters
    factory CourseModuleEntity.of(int? courseModuleId, String? courseModuleCode,
        String? courseModuleName, String? courseModuleThemeColor) {
      return CourseModuleEntity(
        id: courseModuleId,
        code: courseModuleCode,
        courseModuleName: courseModuleName,
        courseModuleThemeColor: courseModuleThemeColor,
        // Set default values or leave other fields null
      );
    }
  

    @override
    String toString() {
      return jsonEncode(this);
    }
  }

  
  ///对可空的CourseModuleEntity对象扩展
  extension PersonSafeExt on CourseModuleEntity? {
  
    ///获取非空的主题色，系统主题色0xFF00B6F1兜底
    String getSafeThemeColor() {
      return this?.courseModuleThemeColor ??  '0xFF00B6F1';
    }
  
    ///获取非空的阶段名称
    String getSafeName() {
      return this?.name ?? 'learn wow!';
    }
  }