Question

我已经获得了一个可以同时呼叫的服务呼叫列表，但我还有另外一个呼叫必须被呼叫，并在其他呼叫被解雇之前完成。我设置了这个，所以其他调用没有发生，直到调用的.then(function() {})块。检查Chrome开发工具（并根据Sql错误获得确认），then子句中的所有调用都在之前触发。我在这里做错了什么？

        var promises = [];

        if (this.partner.customerId > 0) {
            if (this.isDirty('ipn.individualPartnerName')) {
                promises.push(this.partnerEditService.updateIndividualName(<Interfaces.IIndividualPartner>this.partner));
            }

            if (this.isDirty('bpa.mailingAddressForm') || this.isDirty('bpa.streetAddressForm')) {
                promises.push(this.partnerEditService.updateAddresses(this.partner));
            }

            if (this.isDirty('bn.businessName')) {
                promises.push(this.partnerEditService.updateBusinessName(<Interfaces.IBusinessPartner>this.partner));
            }

            if (this.isDirty('rc.individualPartnerResponsibilities') || this.isDirty('rc.businessPartnerResponsibilities')) {
                promises.push(this.partnerEditService.updateResponsibilities(this.operation, this.partner));
            }
        }

        this.partnerAddRepository.addExisting(this.operation.operationId, this.partner.customerId)
            .then(() => {
                this.executeSaves(promises);
            });


    executeSaves = (promises) => {
        this.$q.all(promises)
            .finally(() => {
                this.$mdDialog.hide(this.partner);
            });
    }

这是partnerAddRepo.addExisting函数：

    addExisting = (operationId: number, partnerId: number) => {
        return this.$http.put(`my/path/to/operation/${operationId}/partner/${partnerId}`);
    };

因此，executeSaves中包含4个不同服务调用的内容在partnerAddRepository.addExisting调用被触发之前被调用，为什么？

Answer 1

您拨打电话后立即执行服务电话。 Promise延迟函数调用的返回值，而不是函数的执行。

如果只想在partnerAddRepository.addExisting返回一个值后调用另一个函数，那么你应该在then回调中创建一个promises数组。

this.partnerAddRepository.addExisting(this.operation.operationId, this.partner.customerId)
    .then(() => {
        var promises = [];

        if (this.partner.customerId > 0) {
            if (this.isDirty('ipn.individualPartnerName')) {
                promises.push(this.partnerEditService.updateIndividualName(<Interfaces.IIndividualPartner>this.partner));
            }

            if (this.isDirty('bpa.mailingAddressForm') || this.isDirty('bpa.streetAddressForm')) {
                promises.push(this.partnerEditService.updateAddresses(this.partner));
            }

            if (this.isDirty('bn.businessName')) {
                promises.push(this.partnerEditService.updateBusinessName(<Interfaces.IBusinessPartner>this.partner));
            }

            if (this.isDirty('rc.individualPartnerResponsibilities') || this.isDirty('rc.businessPartnerResponsibilities')) {
                promises.push(this.partnerEditService.updateResponsibilities(this.operation, this.partner));
            }
        }

        this.executeSaves(promises);
});

在原始函数之前的then子句中的角度触发函数

1 个答案: