nearprotocol - 在附近调用 changemethods 后尝试获取最终执行结果的交易详细信息

Question

我确实有一个同时具有 viewMethods 和 changeMethods 的智能合约。

我能够部署合约，并且我们能够成功调用 View 方法和 chnagementhods。

根据附近的文档，无论何时调用函数，它都会返回 promise 。async functionCall(contractId: string, methodName: string, args: any, gas: number, amount?: BN): Promise<FinalExecutionOutcome> {}

但是当我尝试获取结果时，它始终为空。

想法是从响应中获取交易细节。

这是示例代码

import * as nearAPI from "near-api-js"
import { getConfig } from './config'

async initContract() {

if (!this.contract) {
    //initialize near
    await this.initNear();

    this.contract = await this.near.loadContract(process.env.CONTRACT_NAME, { // eslint-disable-line require-atomic-updates
        // NOTE: This configuration only needed while NEAR is still in development
       
        viewMethods: [...],
        // Change methods can modify the state. But you don't receive the returned value when called.
        changeMethods: [ ...."set_comments"],
        // Sender is the account ID to initialize transactions.
        sender: ....
    });
}

return this;
}


    async setComments(
        id: String,
        comments: String
    ) {
        if (this.contract) {
           const respone=  await this.contract.set_comments(
                {
                    id: id,
                    comments: comments
                });
            return respone;
//response is always coming as null even though the comments are updated on near
        }
        return null;
 

       }

谢谢

Answer 1

您没有使用functionCall 方法，您是直接使用合约上的方法。如果你想要交易细节，你需要在账户上使用 functionCall 方法，如下例:

我假设你在 initNear() 中返回了 near，并且可以连接到钱包。

// initialize near
const near = await this.initNear();

// connect to the wallet
const wallet = new WalletConnection(near,'APP_KEY_PREFIX');


// Inside setComments function
const response = await wallet.account().functionCall({
  contractId: this.contract.contractId,
  methodName: 'set_comments',
  args: {
   id: id,
   comments: comments
  },
});