31 lines
791 B
TypeScript
31 lines
791 B
TypeScript
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import { Injectable } from "@nestjs/common";
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import { Model } from 'mongoose';
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import { User, UserDocument } from '../schemas/user.schema';
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import { InjectModel } from '@nestjs/mongoose';
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import { ValidationArguments, ValidatorConstraint, ValidatorConstraintInterface } from "class-validator";
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@ValidatorConstraint({ name: 'UserExists', async: true })
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@Injectable()
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export class UserExistsRule implements ValidatorConstraintInterface {
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constructor(
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@InjectModel(User.name) private readonly userModel: Model<UserDocument>,
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) {}
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async validate(value: string) {
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try {
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await this.userModel.find({email: value});
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} catch (e) {
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return false;
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}
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return true;
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}
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defaultMessage(args: ValidationArguments) {
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return `User doesn't exist`;
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}
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}
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