typeorm 几何类型未定义类型错误

Question

各位。这次我正在使用 postgresql postgis 创建一个使用几何数据的项目。所以我想在列中声明几何并使用它，但是出现错误。你能告诉我为什么会出错吗？

查了很多官方文档，没找到方法。注释坐标栏将正常创建代码。

import {
    Column,
    CreateDateColumn,
    Entity,
    JoinColumn,
    ManyToOne,
    PrimaryGeneratedColumn
} from 'typeorm';
import { Location_Group } from './location_group.entity';
import { Geometry } from 'geojson';
import { Field, ID, Int, ObjectType } from '@nestjs/graphql';

@ObjectType()
@Entity()
export class Location {
    @Field(() => ID)
    @PrimaryGeneratedColumn('increment')
    id: number;

    @Field(() => String)
    @Column({ type: 'varchar' })
    name: string;

    @Field()
    @Column({
        type: 'geometry',
        nullable: true,
        spatialFeatureType: 'Point',
        srid: 4326
    })
    coordinate: Geometry;

    @Field(() => Int)
    @Column({ type: 'int' })
    order_number: number;

    @Field()
    @CreateDateColumn({ type: 'timestamptz' })
    created_at: Date;

    @Field(() => Location_Group)
    @ManyToOne(
        () => Location_Group,
        (location_group) => location_group.location
    )
    @JoinColumn([{ name: 'location_group_id', referencedColumnName: 'id' }])
    location_group: Location_Group;
}

Answer 1

有人要我分享我做的标量，所以写在这里。希望这段代码对你有帮助。

import { GraphQLScalarType } from 'graphql';

export const GeoJSONPoint = new GraphQLScalarType({
    name: 'GeoJSONPoint',
    description: 'Geometry scalar type',
    parseValue(value) {
        return value;
    },

    serialize(value) {
        return value;
    },

    parseLiteral(ast) {
        const geometryData = {
            type: '',
            coordinates: []
        };

        for (const i in ast['fields']) {
            if (ast['fields'][i]['name']['value'] == 'type') {
                if (ast['fields'][i]['value']['value'] != 'point') {
                    return null;
                }
                geometryData.type = ast['fields'][i]['value']['value'];
            }

            if (ast['fields'][i]['name']['value'] == 'coordinate') {
                for (const j in ast['fields'][i]['value']['values']) {
                    geometryData.coordinates.push(
                        parseFloat(
                            ast['fields'][i]['value']['values'][j]['value']
                        )
                    );
                }
            }
        }
        return geometryData;
    }
});

typeorm 几何类型未定义类型错误

typeorm geometry type Undefined type error

postgresql

postgis

graphql

typeorm

nestjs