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({
      this.id,
      this.code,
      this.courseModuleThemeId,
      this.courseTotal,
      this.coverUrl,
      this.createTime,
      this.deleted,
      this.des,
      this.modifyTime,
      this.name,
      this.opening,
      this.picUrl,
      this.sortOrder,
      this.status,
      this.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,

        name: 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，白色兜底

    String getSafeThemeColor() {

      return this?.courseModuleThemeColor ?? '#FFFFFFFF';

    }
  
    ///获取非空的阶段名称
    String getSafeName() {
      return this?.name ?? 'learn wow!';
    }
  }