Function buildFieldSelection

packages/orm/src/client/crud/operations/base.ts:327–369

(
        model: string,
        query: SelectQueryBuilder<any, any, any>,
        selectOrInclude: Record<string, any>,
        parentAlias: string,
    )

    }

    private buildFieldSelection(
        model: string,
        query: SelectQueryBuilder<any, any, any>,
        selectOrInclude: Record<string, any>,
        parentAlias: string,
    ) {
        let result = query;

        for (const [field, payload] of Object.entries(selectOrInclude)) {
            if (!payload) {
                continue;
            }

            if (field === '_count') {
                result = this.buildCountSelection(result, model, parentAlias, payload);
                continue;
            }

            const fieldDef = this.requireField(model, field);
            if (!fieldDef.relation) {
                // scalar field
                result = this.dialect.buildSelectField(result, model, parentAlias, field);
            } else {
                if (!fieldDef.array && !fieldDef.optional && payload.where) {
                    throw createInternalError(`Field "${field}" does not support filtering`, model);
                }
                if (fieldDef.originModel) {
                    result = this.dialect.buildRelationSelection(
                        result,
                        fieldDef.originModel,
                        field,
                        fieldDef.originModel,
                        payload,
                    );
                } else {
                    //  regular relation
                    result = this.dialect.buildRelationSelection(result, model, field, parentAlias, payload);
                }
            }
        }

        return result;
    }

    private buildCountSelection(
        query: SelectQueryBuilder<any, any, any>,