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System.DmlException: Insert failed. First exception on row 0; first error: MIXED_DML_OPERATION, 非設定オブジェクトを更新した後の設定オブジェクト上の DML 操作 (またはその逆) は、許可されていません: Account、元のオブジェクト: User: [][Salesforce]

対策案

・対応前

@isTest
private class TestRunAs {
   public static testMethod void testRunAs() {
        // Setup test data
        // Create a unique UserName
        String uniqueUserName = 'standarduser' + DateTime.now().getTime() + '@testorg.com';
        // This code runs as the system user
        Profile p = [SELECT Id FROM Profile WHERE Name='Standard User'];
        User u = new User(Alias = 'standt', Email='standarduser@testorg.com',
        EmailEncodingKey='UTF-8', LastName='Testing', LanguageLocaleKey='en_US',
        LocaleSidKey='en_US', ProfileId = p.Id,
        TimeZoneSidKey='America/Los_Angeles',
         UserName=uniqueUserName);

        System.runAs(u) {
              // The following code runs as user 'u'
              System.debug('Current User: ' + UserInfo.getUserName());
              System.debug('Current Profile: ' + UserInfo.getProfileId());
          }
    }
}

対応後

@isTest
private class TestRunAs2 {

   public static testMethod void test2() {

      Profile p = [SELECT Id FROM Profile WHERE Name='Standard User'];
      User u2 = new User(Alias = 'newUser', Email='newuser@testorg.com',
         EmailEncodingKey='UTF-8', LastName='Testing', LanguageLocaleKey='en_US',
         LocaleSidKey='en_US', ProfileId = p.Id,
         TimeZoneSidKey='America/Los_Angeles', UserName='newuser@testorg.com');

      System.runAs(u2) {
         // The following code runs as user u2.
         System.debug('Current User: ' + UserInfo.getUserName());
         System.debug('Current Profile: ' + UserInfo.getProfileId());

         // The following code runs as user u3.
         User u3 = [SELECT Id FROM User WHERE UserName='newuser@testorg.com'];
         System.runAs(u3) {
            System.debug('Current User: ' + UserInfo.getUserName());
            System.debug('Current Profile: ' + UserInfo.getProfileId());
         }

         // Any additional code here would run as user u2.
      }
   }
}

lightning-combobox

<template>
    <lightning-combobox
            name="progress"
            label="Status"
            value={value}
            placeholder="Select Progress"
            options={options}
            onchange={handleChange} ></lightning-combobox>

    <p>Selected value is: {value}</p>
</template>

import { LightningElement } from 'lwc';

export default class ComboboxBasic extends LightningElement {
    value = 'inProgress';

    get options() {
        return [
            { label: 'New', value: 'new' },
            { label: 'In Progress', value: 'inProgress' },
            { label: 'Finished', value: 'finished' },
        ];
    }

    handleChange(event) {
        this.value = event.detail.value;
    }
}

slds-p-around_medium

<div class="slds-p-around_medium"></div>

slds-grid

<div class="slds-grid slds-gutters">
<div class="slds-col">
<span>1</span>
</div>
<div class="slds-col">
<span>2</span>
</div>
<div class="slds-col">
<span>3</span>
</div>
</div>

Lightningコンポーネントライブラリの lightning-card

cardとは？

コンテナです。 タイトル、アクション、フッタを持たせることができます

例）

<template>
    <lightning-card>カードです</lightning-card>
</template>

Lightning Web Component Basic

Javascript

import { LightningElement } from 'lwc';

export default class App extends LightningElement {
   name = 'Electra X4';
   description = 'A sweet bike built for comfort.';
   category = 'Mountain';
   material = 'Steel';
   price = '$2,700';
   pictureUrl = 'https://s3-us-west-1.amazonaws.com/sfdc-demo/ebikes/electrax4.jpg';
   ready = false;

   connectedCallback() {
       setTimeout(() => {
           this.ready = true;
       }, 3000);
   }
}

Html

<template>
    <div>
        <div>Name: {name}</div>
        <div>Description: {description}</div>
        <div>Category: {category}</div>
        <div>Material: {material}</div>
        <div>Price: {price}</div>
        <div><img src={pictureUrl}/></div>
    </div>
</template>

xml

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">
    <!-- The apiVersion may need to be increased for the current release -->
    <apiVersion>48.0</apiVersion>
    <isExposed>true</isExposed>
    <targets>
        <target>lightning__AppPage</target>
        <target>lightning__RecordPage</target>
        <target>lightning__HomePage</target>
    </targets>
</LightningComponentBundle>

Result

Long running operation did not complete, continued in background

I am debugging a apex trigger/class and is using the Developer Console. When I click on my log entry it seems like it loads the logs and then I get this popup:

You need to manually download the logs. Go to ‘File’ then ‘Download Log’.

Lightning Webコンポーネントの非デコレータ

// howToUseVariables.js
import { LightningElement } from 'lwc';

export default class HowToUseVariables extends LightningElement {
    name = 'プレーン太郎';
}

// howToUseVariables.html
<template>
    <lightning-card class="slds-m-around_small">
        (そのまま記述)
        <p>name : {name}</p>
    </lightning-card>   
</template>

//howToUseVariables.js-meta.xml
<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">
    <apiVersion>57.0</apiVersion>
    <isExposed>true</isExposed>
    <targets>
        <target>lightning__AppPage</target>
        <target>lightning__RecordPage</target>
        <target>lightning__HomePage</target>
    </targets>
</LightningComponentBundle>

動作確認