add test case

src/main.ts

@@ -2,6 +2,8 @@ import { NestFactory } from '@nestjs/core';
 
 import { FastifyAdapter, NestFastifyApplication } from '@nestjs/platform-fastify';
 
+import { useContainer } from 'class-validator';
+
 import { AppModule } from './app.module';
 
 async function bootstrap() {
@@ -10,6 +12,7 @@ async function bootstrap() {
         logger: ['error', 'warn'],
     });
     app.setGlobalPrefix('api');
+    useContainer(app.select(AppModule), { fallbackOnErrors: true });
     await app.listen(process.env.PORT ?? 3000, () => {
         console.log('api: http://localhost:3000');
     });

src/modules/content/dtos/category.dto.ts

@@ -2,8 +2,8 @@ import { PartialType } from '@nestjs/swagger';
 import { Transform } from 'class-transformer';
 import {
     IsDefined,
+    IsInt,
     IsNotEmpty,
-    IsNumber,
     IsOptional,
     IsUUID,
     MaxLength,
@@ -13,25 +13,41 @@ import {
 import { toNumber } from 'lodash';
 
 import { DtoValidation } from '@/modules/core/decorator/dto.validation.decorator';
+import { IsDataExist } from '@/modules/database/constraints/data.exist.constraint';
+import { IsTreeUnique } from '@/modules/database/constraints/tree.unique.constraint';
+import { IsTreeUniqueExist } from '@/modules/database/constraints/tree.unique.exist.constraint';
 import { PaginateOptions } from '@/modules/database/types';
 
+import { CategoryEntity } from '../entities';
+
 @DtoValidation({ type: 'query' })
 export class QueryCategoryDto implements PaginateOptions {
     @Transform(({ value }) => toNumber(value))
-    @Min(1, { message: 'The current page must be greater than 1.' })
+    @Min(1, { always: true, message: 'The current page must be greater than 1.' })
-    @IsNumber()
+    @IsInt()
     @IsOptional()
     page = 1;
 
     @Transform(({ value }) => toNumber(value))
-    @Min(1, { message: 'The number of data displayed per page must be greater than 1.' })
+    @Min(1, {
-    @IsNumber()
+        always: true,
+        message: 'The number of data displayed per page must be greater than 1.',
+    })
+    @IsInt()
     @IsOptional()
     limit = 10;
 }
 
 @DtoValidation({ groups: ['create'] })
 export class CreateCategoryDto {
+    @IsTreeUnique(CategoryEntity, {
+        groups: ['create'],
+        message: 'The Category names are duplicated',
+    })
+    @IsTreeUniqueExist(CategoryEntity, {
+        groups: ['update'],
+        message: 'The Category names are duplicated',
+    })
     @MaxLength(25, {
         always: true,
         message: 'The length of the category name shall not exceed $constraint1',
@@ -40,6 +56,7 @@ export class CreateCategoryDto {
     @IsOptional({ groups: ['update'] })
     name: string;
 
+    @IsDataExist(CategoryEntity, { always: true, message: 'The parent category does not exist' })
     @IsUUID(undefined, {
         always: true,
         message: 'The format of the parent category ID is incorrect.',
@@ -51,13 +68,17 @@ export class CreateCategoryDto {
 
     @Transform(({ value }) => toNumber(value))
     @Min(0, { always: true, message: 'The sorted value must be greater than 0.' })
-    @IsNumber(undefined, { always: true })
+    @IsInt({ always: true })
     @IsOptional({ always: true })
     customOrder?: number = 0;
 }
 
 @DtoValidation({ groups: ['update'] })
 export class UpdateCategoryDto extends PartialType(CreateCategoryDto) {
+    @IsDataExist(CategoryEntity, {
+        groups: ['update'],
+        message: 'category id not exist when update',
+    })
     @IsUUID(undefined, { message: 'The ID format is incorrect', groups: ['update'] })
     @IsDefined({ groups: ['update'], message: 'The ID must be specified' })
     id: string;

src/modules/content/dtos/comment.dto.ts

@@ -2,8 +2,8 @@ import { PickType } from '@nestjs/swagger';
 import { Transform } from 'class-transformer';
 import {
     IsDefined,
+    IsInt,
     IsNotEmpty,
-    IsNumber,
     IsOptional,
     IsUUID,
     MaxLength,
@@ -13,22 +13,29 @@ import {
 import { toNumber } from 'lodash';
 
 import { DtoValidation } from '@/modules/core/decorator/dto.validation.decorator';
+import { IsDataExist } from '@/modules/database/constraints/data.exist.constraint';
 import { PaginateOptions } from '@/modules/database/types';
 
+import { CommentEntity, PostEntity } from '../entities';
+
 @DtoValidation({ type: 'query' })
 export class QueryCommentDto implements PaginateOptions {
     @Transform(({ value }) => toNumber(value))
-    @Min(1, { message: 'The current page must be greater than 1.' })
+    @Min(1, { always: true, message: 'The current page must be greater than 1.' })
-    @IsNumber()
+    @IsInt()
     @IsOptional()
     page = 1;
 
     @Transform(({ value }) => toNumber(value))
-    @Min(1, { message: 'The number of data displayed per page must be greater than 1.' })
+    @Min(1, {
-    @IsNumber()
+        always: true,
+        message: 'The number of data displayed per page must be greater than 1.',
+    })
+    @IsInt()
     @IsOptional()
     limit = 10;
 
+    @IsDataExist(PostEntity, { message: 'The post does not exist' })
     @IsUUID(undefined, { message: 'The ID format is incorrect' })
     @IsOptional()
     post?: string;
@@ -43,10 +50,12 @@ export class CreateCommentDto {
     @IsNotEmpty({ message: '' })
     body: string;
 
+    @IsDataExist(PostEntity, { message: 'The post does not exist' })
     @IsUUID(undefined, { message: 'The ID format is incorrect' })
     @IsDefined({ message: 'The ID must be specified' })
     post: string;
 
+    @IsDataExist(CommentEntity, { message: 'The parent comment does not exist' })
     @IsUUID(undefined, { message: 'The ID format is incorrect', always: true })
     @ValidateIf((value) => value.parent !== null && value.parent)
     @IsOptional({ always: true })

src/modules/content/dtos/post.dto.ts

@@ -5,8 +5,8 @@ import {
     IsBoolean,
     IsDefined,
     IsEnum,
+    IsInt,
     IsNotEmpty,
-    IsNumber,
     IsOptional,
     IsUUID,
     MaxLength,
@@ -19,8 +19,11 @@ import { isNil, toNumber } from 'lodash';
 import { PostOrder } from '@/modules/content/constants';
 import { DtoValidation } from '@/modules/core/decorator/dto.validation.decorator';
 import { toBoolean } from '@/modules/core/helpers';
+import { IsDataExist } from '@/modules/database/constraints/data.exist.constraint';
 import { PaginateOptions } from '@/modules/database/types';
 
+import { CategoryEntity, PostEntity, TagEntity } from '../entities';
+
 @DtoValidation({ type: 'query' })
 export class QueryPostDto implements PaginateOptions {
     @Transform(({ value }) => toBoolean(value))
@@ -35,17 +38,21 @@ export class QueryPostDto implements PaginateOptions {
     orderBy: PostOrder;
 
     @Transform(({ value }) => toNumber(value))
-    @Min(1, { message: 'The current page must be greater than 1.' })
+    @Min(1, { always: true, message: 'The current page must be greater than 1.' })
-    @IsNumber()
+    @IsInt()
     @IsOptional()
     page = 1;
 
     @Transform(({ value }) => toNumber(value))
-    @Min(1, { message: 'The number of data displayed per page must be greater than 1.' })
+    @Min(1, {
-    @IsNumber()
+        always: true,
+        message: 'The number of data displayed per page must be greater than 1.',
+    })
+    @IsInt()
     @IsOptional()
     limit = 10;
 
+    @IsDataExist(CategoryEntity, { always: true, message: 'The category does not exist' })
     @IsUUID(undefined, { message: 'The ID format is incorrect' })
     @IsOptional()
     category?: string;
@@ -91,11 +98,12 @@ export class CreatePostDto {
     keywords?: string[];
 
     @Transform(({ value }) => toNumber(value))
-    @Min(0, { message: 'The sorted value must be greater than 0.' })
+    @Min(0, { message: 'The sorted value must be greater than 0.', always: true })
-    @IsNumber(undefined, { always: true })
+    @IsInt({ always: true })
     @IsOptional({ always: true })
     customOrder?: number;
 
+    @IsDataExist(CategoryEntity, { always: true, message: 'The category does not exist' })
     @IsUUID(undefined, {
         always: true,
         message: 'The ID format is incorrect',
@@ -103,6 +111,11 @@ export class CreatePostDto {
     @IsOptional({ always: true })
     category?: string;
 
+    @IsDataExist(TagEntity, {
+        always: true,
+        each: true,
+        message: 'The tag does not exist',
+    })
     @IsUUID(undefined, {
         always: true,
         each: true,
@@ -119,5 +132,6 @@ export class UpdatePostDto extends PartialType(CreatePostDto) {
         message: 'The format of the article ID is incorrect.',
     })
     @IsDefined({ groups: ['update'], message: 'The article ID must be specified' })
+    @IsDataExist(PostEntity, { groups: ['update'], message: 'post id not exist when update' })
     id: string;
 }

src/modules/content/dtos/tag.dto.ts

@@ -1,36 +1,38 @@
 import { PartialType } from '@nestjs/swagger';
 import { Transform } from 'class-transformer';
-import {
+import { IsDefined, IsInt, IsNotEmpty, IsOptional, IsUUID, MaxLength, Min } from 'class-validator';
-    IsDefined,
-    IsNotEmpty,
-    IsNumber,
-    IsOptional,
-    IsUUID,
-    MaxLength,
-    Min,
-} from 'class-validator';
 import { toNumber } from 'lodash';
 
 import { DtoValidation } from '@/modules/core/decorator/dto.validation.decorator';
+import { IsDataExist } from '@/modules/database/constraints';
+import { IsUnique } from '@/modules/database/constraints/unique.constraint';
+import { IsUniqueExist } from '@/modules/database/constraints/unique.exist.constraint';
 import { PaginateOptions } from '@/modules/database/types';
 
+import { TagEntity } from '../entities';
+
 @DtoValidation({ type: 'query' })
 export class QueryTagDto implements PaginateOptions {
     @Transform(({ value }) => toNumber(value))
-    @Min(1, { message: 'The current page must be greater than 1.' })
+    @Min(1, { always: true, message: 'The current page must be greater than 1.' })
-    @IsNumber()
+    @IsInt()
     @IsOptional()
     page = 1;
 
     @Transform(({ value }) => toNumber(value))
-    @Min(1, { message: 'The number of data displayed per page must be greater than 1.' })
+    @Min(1, {
-    @IsNumber()
+        always: true,
+        message: 'The number of data displayed per page must be greater than 1.',
+    })
+    @IsInt()
     @IsOptional()
     limit = 10;
 }
 
 @DtoValidation({ groups: ['create'] })
 export class CreateTagDto {
+    @IsUnique(TagEntity, { groups: ['create'], message: 'The label names are repeated' })
+    @IsUniqueExist(TagEntity, { groups: ['update'], message: 'The label names are repeated' })
     @MaxLength(255, {
         always: true,
         message: 'The maximum length of the label name is $constraint1',
@@ -49,6 +51,7 @@ export class CreateTagDto {
 
 @DtoValidation({ groups: ['update'] })
 export class UpdateTagDto extends PartialType(CreateTagDto) {
+    @IsDataExist(TagEntity, { groups: ['update'], message: 'tag id not exist when update' })
     @IsUUID(undefined, { message: 'The ID format is incorrect', groups: ['update'] })
     @IsDefined({ groups: ['update'], message: 'The ID must be specified' })
     id: string;

src/modules/content/entities/category.entity.ts

@@ -22,7 +22,7 @@ export class CategoryEntity extends BaseEntity {
     id: string;
 
     @Expose()
-    @Column({ comment: '分类名称', unique: true })
+    @Column({ comment: '分类名称' })
     name: string;
 
     @Expose({ groups: ['category-tree', 'category-list', 'category-detail'] })
@@ -40,7 +40,7 @@ export class CategoryEntity extends BaseEntity {
     parent: Relation<CategoryEntity> | null;
 
     @Type(() => CategoryEntity)
-    @Expose({ groups: ['category-tree'] })
+    @Expose({ groups: ['category-tree', 'category-detail'] })
     @TreeChildren({ cascade: true })
     children: Relation<CategoryEntity>[];
 }

src/modules/content/services/category.service.ts

@@ -26,7 +26,7 @@ export class CategoryService {
     }
 
     async detail(id: string) {
-        return this.repository.findOneOrFail({ where: { id }, relations: ['parent'] });
+        return this.repository.findOneOrFail({ where: { id }, relations: ['parent', 'children'] });
     }
 
     async create(data: CreateCategoryDto) {

src/modules/core/providers/app.pipe.ts

@@ -1,6 +1,6 @@
 import { ArgumentMetadata, BadRequestException, Paramtype, ValidationPipe } from '@nestjs/common';
 
-import { isObject, omit } from 'lodash';
+import { isNil, isObject, isString, omit } from 'lodash';
 
 import { DTO_VALIDATION_OPTIONS } from '../contants';
 import { deepMerge } from '../helpers';
@@ -31,12 +31,13 @@ export class AppPipe extends ValidationPipe {
                       if (isObject(val) && 'mimetype' in val) {
                           return [key, omit(val, ['fields'])];
                       }
+                      if (key === 'name' && isString(val)) {
+                          return [key, isNil(val) ? val : val.trim()];
+                      }
                       return [key, val];
                   }),
               )
             : value;
-        console.log(value);
-        console.log(toValidate);
         try {
             let result = await super.transform(toValidate, metadata);
             if (typeof result.transform === 'function') {

src/modules/database/constraints/index.ts

@@ -0,0 +1,5 @@
+export * from './data.exist.constraint';
+export * from './tree.unique.constraint';
+export * from './tree.unique.exist.constraint';
+export * from './unique.constraint';
+export * from './unique.exist.constraint';

src/modules/database/constraints/tree.unique.constraint.ts

@@ -0,0 +1,87 @@
+import { Injectable } from '@nestjs/common';
+import {
+    ValidatorConstraint,
+    ValidatorConstraintInterface,
+    ValidationArguments,
+    registerDecorator,
+    ValidationOptions,
+} from 'class-validator';
+import { merge, isNil } from 'lodash';
+import { DataSource, ObjectType } from 'typeorm';
+
+type Condition = {
+    entity: ObjectType<any>;
+
+    parentKey?: string;
+
+    property?: string;
+};
+
+@ValidatorConstraint({ name: 'treeDataUnique', async: true })
+@Injectable()
+export class TreeUniqueConstraint implements ValidatorConstraintInterface {
+    constructor(private dataSource: DataSource) {}
+
+    async validate(value: any, args: ValidationArguments) {
+        // 获取要验证的模型和字段
+        const config: Omit<Condition, 'entity'> = {
+            parentKey: 'parent',
+            property: args.property,
+        };
+        const condition = ('entity' in args.constraints[0]
+            ? merge(config, args.constraints[0])
+            : {
+                  ...config,
+                  entity: args.constraints[0],
+              }) as unknown as Required<Condition>;
+        if (!condition.entity) {
+            return false;
+        }
+        if (isNil(value)) {
+            return true;
+        }
+        const argsObj = args.object as any;
+        try {
+            // 查询是否存在数据,如果已经存在则验证失败
+            const repo = this.dataSource.getTreeRepository(condition.entity);
+            const collections = await repo.find({
+                where: {
+                    parent: !argsObj[condition.parentKey]
+                        ? null
+                        : { id: argsObj[condition.parentKey] },
+                },
+            });
+            return collections.every((item) => item[condition.property] !== value);
+        } catch (err) {
+            // 如果数据库操作异常则验证失败
+            return false;
+        }
+    }
+
+    defaultMessage(args: ValidationArguments) {
+        const { entity, property } = args.constraints[0];
+        const queryProperty = property ?? args.property;
+        if (!(args.object as any).getManager) {
+            return 'getManager function not been found!';
+        }
+        if (!entity) {
+            return 'Model not been specified!';
+        }
+        return `${queryProperty} of ${entity.name} must been unique!`;
+    }
+}
+
+export function IsTreeUnique(
+    params: ObjectType<any> | Condition,
+    validationOptions?: ValidationOptions,
+) {
+    return (object: Record<string, any>, propertyName: string) => {
+        registerDecorator({
+            target: object.constructor,
+            propertyName,
+            options: validationOptions,
+            constraints: [params],
+            validator: TreeUniqueConstraint,
+        });
+    };
+}

src/modules/database/constraints/tree.unique.exist.constraint.ts

@@ -0,0 +1,99 @@
+import { Injectable } from '@nestjs/common';
+import {
+    registerDecorator,
+    ValidationArguments,
+    ValidationOptions,
+    ValidatorConstraint,
+    ValidatorConstraintInterface,
+} from 'class-validator';
+import { merge } from 'lodash';
+import { DataSource, ObjectType } from 'typeorm';
+
+type Condition = {
+    entity: ObjectType<any>;
+
+    ignore?: string;
+
+    ignoreKey?: string;
+
+    property?: string;
+};
+
+@ValidatorConstraint({ name: 'treeDataUniqueExist', async: true })
+@Injectable()
+export class TreeUniqueExistContraint implements ValidatorConstraintInterface {
+    constructor(private dataSource: DataSource) {}
+
+    async validate(value: any, args: ValidationArguments) {
+        const config: Omit<Condition, 'entity'> = {
+            ignore: 'id',
+            property: args.property,
+        };
+        const condition = ('entity' in args.constraints[0]
+            ? merge(config, args.constraints[0])
+            : {
+                  ...config,
+                  entity: args.constraints[0],
+              }) as unknown as Required<Condition>;
+        if (!condition.entity) {
+            return false;
+        }
+        if (!condition.ignoreKey) {
+            condition.ignoreKey = condition.ignore;
+        }
+        const argsObj = args.object as any;
+        // 在传入的dto数据中获取需要忽略的字段的值
+        const ignoreValue = argsObj[condition.ignore];
+        const findValue = argsObj[condition.ignoreKey];
+        if (!ignoreValue || !findValue) {
+            return false;
+        }
+
+        // 通过entity获取repository
+        const repo = this.dataSource.getRepository(condition.entity);
+        // 查询忽略字段之外的数据是否对queryProperty的值唯一
+        const item = await repo.findOne({
+            where: {
+                [condition.ignoreKey]: findValue,
+            },
+            relations: ['parent'],
+        });
+        if (!item) {
+            return false;
+        }
+        const rows = await repo.find({
+            where: { parent: item.parent ? { id: item.parent.id } : null },
+            withDeleted: true,
+        });
+        return !rows.find(
+            (row) => row[condition.property] === value && row[condition.ignore] !== ignoreValue,
+        );
+    }
+
+    defaultMessage(args: ValidationArguments) {
+        const { entity, property } = args.constraints[0];
+        const queryProperty = property ?? args.property;
+        if (!(args.object as any).getManager) {
+            return 'getManager function not been found!';
+        }
+        if (!entity) {
+            return 'Model not been specified!';
+        }
+        return `${queryProperty} of ${entity.name} must been unique!`;
+    }
+}
+
+export function IsTreeUniqueExist(
+    params: ObjectType<any> | Condition,
+    validationOptions?: ValidationOptions,
+) {
+    return (object: Record<string, any>, propertyName: string) => {
+        registerDecorator({
+            target: object.constructor,
+            propertyName,
+            options: validationOptions,
+            constraints: [params],
+            validator: TreeUniqueExistContraint,
+        });
+    };
+}

src/modules/database/constraints/unique.exist.constraint.ts

@@ -0,0 +1,74 @@
+import { Injectable } from '@nestjs/common';
+import {
+    registerDecorator,
+    ValidationArguments,
+    ValidationOptions,
+    ValidatorConstraint,
+    ValidatorConstraintInterface,
+} from 'class-validator';
+import { isNil, merge } from 'lodash';
+import { DataSource, Not, ObjectType } from 'typeorm';
+
+type Condition = {
+    entity: ObjectType<any>;
+
+    ignore?: string;
+
+    ignoreKey?: string;
+
+    property?: string;
+};
+@Injectable()
+@ValidatorConstraint({ name: 'dataUniqueExist', async: true })
+export class UniqueExistConstraint implements ValidatorConstraintInterface {
+    constructor(protected dataSource: DataSource) {}
+
+    async validate(value: any, args?: ValidationArguments): Promise<boolean> {
+        const config: Omit<Condition, 'entity'> = {
+            ignore: 'id',
+            property: args.property,
+        };
+        const condition = ('entity' in args.constraints[0]
+            ? merge(config, args.constraints[0])
+            : { ...config, entity: args.constraints[0] }) as unknown as Required<Condition>;
+        if (!condition.entity) {
+            return false;
+        }
+        const ignoreValue = (args.object as any)[
+            isNil(condition.ignoreKey) ? condition.ignore : condition.ignoreKey
+        ];
+        if (ignoreValue === undefined) {
+            return false;
+        }
+        const repo = this.dataSource.getRepository(condition.entity);
+        return isNil(
+            await repo.findOne({
+                where: { [condition.property]: value, [condition.ignore]: Not(ignoreValue) },
+                withDeleted: true,
+            }),
+        );
+    }
+    defaultMessage?(args?: ValidationArguments): string {
+        const { entity, property } = args.constraints[0];
+        const queryProperty = property ?? args.property;
+        if (!(args.object as any).getManager) {
+            return 'getManager function not been found!';
+        }
+        if (!entity) {
+            return 'Model not been specified!';
+        }
+        return `${queryProperty} of ${entity.name} must been unique!`;
+    }
+}
+
+export function IsUniqueExist(params: ObjectType<any> | Condition, options?: ValidationOptions) {
+    return (object: RecordAny, propertyName: string) => {
+        registerDecorator({
+            target: object.constructor,
+            propertyName,
+            options,
+            constraints: [params],
+            validator: UniqueExistConstraint,
+        });
+    };
+}

src/modules/database/database.module.ts

@@ -5,6 +5,14 @@ import { DataSource, ObjectType } from 'typeorm';
 
 import { CUSTOM_REPOSITORY_METADATA } from '@/modules/database/constants';
 
+import {
+    DataExistConstraint,
+    TreeUniqueConstraint,
+    TreeUniqueExistContraint,
+    UniqueConstraint,
+    UniqueExistConstraint,
+} from './constraints';
+
 @Module({})
 export class DatabaseModule {
     static forRoot(configRegister: () => TypeOrmModuleOptions): DynamicModule {
@@ -12,6 +20,13 @@ export class DatabaseModule {
             global: true,
             module: DatabaseModule,
             imports: [TypeOrmModule.forRoot(configRegister())],
+            providers: [
+                DataExistConstraint,
+                UniqueConstraint,
+                UniqueExistConstraint,
+                TreeUniqueConstraint,
+                TreeUniqueExistContraint,
+            ],
         };
     }
     static forRepository<T extends Type<any>>(