SAP学习笔记 - BTP CAP开发06 - Customize Criticality，Map Page，Value help

1，Criticality

[1-1，Rainbow CSV Extension](#1-1，Rainbow CSV Extension)

[1-2，BookStatus Entity](#1-2，BookStatus Entity)

[1-3，Ctrl+Shift+P > Open Application Info](#1-3，Ctrl+Shift+P > Open Application Info)

[a，添加字段 stock，status](#a，添加字段 stock，status)

b，设置Criticality

[c，添加Filter - Value Help](#c，添加Filter - Value Help)

[d，添加字段到Object Page](#d，添加字段到Object Page)

下面是详细内容。

1，Criticality

1-1，Rainbow CSV Extension

咱们继续使用CSV作为本地DB，为了看数据好看一些，下载一个插件 Rainbow CSV

能比全黑要好点儿哈

1-2，BookStatus Entity

加一个表

复制代码

type BookStatusCode : String(1) enum {
    Available = 'A';
    Low_Stock = 'L';
    Unavailable = 'U';
};

entity BookStatus {
    key code        : BookStatusCode;
        criticality : Integer;
        displayText : String;
}

然后用 cds add data生成csv文件，再加下面数据

复制代码

code,criticality,displayText
A,3,Available
L,2,Low Stock
U,1,Unavailable

相应的，把Books表也改一下：

复制代码

entity Books : cuid, managed {
    title       : String;
    author      : Association to Authors;
    genre       : String;
    publishedAt : Date;
    pages       : Integer;
    price       : Decimal(9, 2);
    currency    : String;
    stock       : Integer;
    status      : Association to BookStatus;
    Chapters    : Composition of many Chapters
                      on Chapters.book = $self;


}

数据也改一下：

复制代码

ID,title,author_ID,genre,publishedAt,pages,price,currency,stock,status,createdAt,createdBy,modifiedAt,modifiedBy
32508139-cb39-48f2-866b-855a36401d99,"The Silent Forest",29739579-a79e-4c59-a5d8-b27fc939d58b,"Fiction","2018-04-12",340,49.99,INR,25,A,"2025-01-01T09:00:00Z","SYSTEM","2025-01-01T09:00:00Z","SYSTEM"
8b1d4b6d-2c5f-4c1c-ac20-e6a6e022f5b8,"A Brief History of Space",29739579-a79e-4c59-a5d8-b27fc939d58b,"Science","2021-09-01",280,69.99,INR,8,L,"2025-01-01T09:05:00Z","SYSTEM","2025-01-01T09:05:00Z","SYSTEM"
b3c97c1f-2e82-4c5d-9f63-45de1c72bb7d,"Cooking with Fire",29739579-a79e-4c59-a5d8-b27fc939d58b,"Cooking","2020-02-17",220,39.99,INR,0,U,"2025-01-01T09:10:00Z","SYSTEM","2025-01-01T09:10:00Z","SYSTEM"
c4f87443-9b2d-4b6e-a1e1-a65d6f47a6c5,"Winds of the North",12729882-477e-424d-805d-22a9dd5bf9f7,"Fantasy","2019-11-03",410,59.90,INR,15,A,"2025-01-01T09:15:00Z","SYSTEM","2025-01-01T09:15:00Z","SYSTEM"
2f0e3a28-2902-40bf-9a19-e0bff621adfb,"Gardening for Beginners",12729882-477e-424d-805d-22a9dd5bf9f7,"Hobby","2022-06-22",180,34.50,INR,5,L,"2025-01-01T09:20:00Z","SYSTEM","2025-01-01T09:20:00Z","SYSTEM"
94a7c74a-57a0-4e13-9ff8-33a89f92aa3d,"The Lost Empire",12729882-477e-424d-805d-22a9dd5bf9f7,"Adventure","2017-08-14",360,54.99,INR,0,U,"2025-01-01T09:25:00Z","SYSTEM","2025-01-01T09:25:00Z","SYSTEM"
dcd30d22-0bd8-4ea2-b5ba-84e27bd97558,"Mindful Living",12729883-ca10-4405-a0c6-a180d28427f7,"Self-Help","2023-03-02",250,42.00,INR,12,A,"2025-01-01T09:30:00Z","SYSTEM","2025-01-01T09:30:00Z","SYSTEM"
636fa2f7-1dfb-4926-afaf-7ae1716e998b,"The Ocean Below",12729884-46ff-4a00-814c-ee008e20d430,"Non-Fiction","2021-12-09",310,64.90,INR,6,L,"2025-01-01T09:35:00Z","SYSTEM","2025-01-01T09:35:00Z","SYSTEM"
0eacb82f-8765-46ef-9b41-21ba9c9f3df1,"Secrets of Architecture",12729884-46ff-4a00-814c-ee008e20d430,"Art","2016-05-27",295,79.00,INR,3,L,"2025-01-01T09:40:00Z","SYSTEM","2025-01-01T09:40:00Z","SYSTEM"
c92dfd60-8831-4c0d-b88f-19e0fd4e4df3,"Deep Sea Tales",12729885-da2f-4f4e-90d8-728cc409f2bb,"Children","2024-01-11",150,29.99,INR,20,A,"2025-01-01T09:45:00Z","SYSTEM","2025-01-01T09:45:00Z","SYSTEM"