CODEWITHSUNDEEP
node.jsexpressnestjs
Andrew
Andrew

Reputation: 846

Alter JSON response in nestjs

i am using node,nestjs and mongoose i write a get call and get the result like

[
 {
    "_id": "5d4a9c0b1a6bcf14775c953c",
    "material_name": "ramboo",
    "material_status": 0,
    "is_admin_approved": true,
    "createdAt": "2019-08-07T09:38:19.237Z",
    "updatedAt": "2019-08-07T09:38:19.237Z",
    "id": "5d4a9c0b1a6bcf14775c953c"
}
]

the service like this (material.service.ts)

async findAll(): Promise<IDMaterial[]> {
  return await this.materialModel.find({is_admin_approved: true});
  }

how to remove is_admin_approved field from the result like

[
 {
    "_id": "5d4a9c0b1a6bcf14775c953c",
    "material_name": "ramboo",
    "material_status": 0,
    "createdAt": "2019-08-07T09:38:19.237Z",
    "updatedAt": "2019-08-07T09:38:19.237Z",
    "id": "5d4a9c0b1a6bcf14775c953c"
}
]

how to solve this issue any way please help me ?

Upvotes: 1

Views: 4822

Answers (2)

MilosMarkoni
MilosMarkoni

Reputation: 96

Hope this code can help you. Store the results, then iterate and delete item from each object you fetched. Then return that changed array of objects.

async findAll(): Promise<IDMaterial[]> {
  const result = await this.materialModel.find({is_admin_approved: true});
  result.map(elem => delete elem.is_admin_approved)
  return result;
}

Upvotes: 0

Ihor Sakailiuk
Ihor Sakailiuk

Reputation: 6068

You could omit is_admin_approved from each object in the array using lodash's omit function:

async findAll(): Promise<Partial<IDMaterial>[]> {
  return this.materialModel
    .find({is_admin_approved: true})
    .then(data => data.map(item => _.omit(item.toObject(), 'is_admin_approved')));
}

You could also mark is_admin_approved as @Exclude in your IDMaterial dto class and then cast retrieved items to this dto (plainToClass(IDMaterial, item)).

export class IDMaterial {
   // ...
   @Exclude()
   is_admin_approved: boolean;
  // ...
}

// ...
async findAll(): Promise<Partial<IDMaterial>[]> {
  return this.materialModel
    .find({is_admin_approved: true})
    .then(data => data.map(item => plainToClass(IDMaterial, item)));

}

Upvotes: 1

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