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| Section | Objectives |
|---|---|
| Topic 1: Testing, Debugging, and Deployment | - Testing strategies
|
| Topic 2: Advanced Apex Programming and Data Modeling | - Data Modeling
|
| Topic 3: Integration and Security | - Integration patterns
|
| Topic 4: User Interface Development | - Lightning Component Development
|
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NEW QUESTION # 83
開発者は、システム内のアカウントを照会し、結果をデータ テーブルに表示する Visualforce ページを作成しています。ユーザーは、最大 5 つのフィールドに基づいて結果をフィルタリングできるようにしたいと考えています。ただし、ユーザーは、ページを実行するときにフィルター フィールドとして使用する 5 つのフィールドを選びたいと考えています。
このソリューションを促進するには、Apex コードのどの機能が必要ですか?
Answer: D
NEW QUESTION # 84
カスタムインターフェースの一部として、開発者チームはさまざまな新しい Lightning Web コンポーネントを作成します。各コンポーネントはトースト メッセージを使用してエラーを処理します。開発が完了すると、すべてのコンポーネントが同じ Lightning ページに追加されます。
受け入れテスト中に、コンポーネントの読み込み中にエラーが発生したときに表示されるトースト メッセージの長いチェーンについてユーザーから苦情が寄せられました。
ユーザー エクスペリエンスを向上させるために開発者が実装する必要がある 2 つのテクニックはどれですか?
2 つの答えを選択してください
Answer: A,C
Explanation:
The scenario describes a common issue when multiple components are used on the same Lightning page and each component manages its error handling independently, leading to a "long chain of toast messages" which can be overwhelming for users.
To improve user experience, the developers can implement the following techniques:
A: Use a Lightning web component to aggregate and display all errors: This method involves creating a centralized component responsible for handling all error messages. This component would receive error notifications from other components and then display them in a user-friendly manner. The benefit of this approach is that it provides a single, consistent interface for error messages, reducing the clutter and confusion that can be caused by multiple toasts.
D: Use public properties on each component to display the error messages: By using public properties, components can expose their error states to a parent or orchestrating component, which can then display these errors in a single, consolidated way. This avoids the issue of multiple toast notifications and allows for a more integrated error handling experience.
The other options presented are less ideal:
B: Using the window.alert() method is not recommended in a professional Salesforce environment as it is considered a disruptive way to show errors and does not align with the Salesforce Lightning design system.
C: Using a <template> tag to display in-place error messages could be a viable option for displaying error messages within the component itself, but it does not address the issue of multiple errors stacking up from different components as described in the scenario.
References:
For building a centralized error handling component: Lightning Web Components Developer Guide - Error Handling For implementing public properties: Lightning Web Components Developer Guide - Public Properties
NEW QUESTION # 85
ビジネス ルールでは、新しいアカウントを作成するときに常に連絡先を作成する必要があります。連絡先の作成に失敗した場合にアカウントが作成されないようにするためのカスタム画面を開発するときに使用できるものは何ですか?
Answer: B
NEW QUESTION # 86
次のコード スニペットを参照してください。
開発者は、特定の条件が満たされた場合に geyFetchLeadList を呼び出して潜在顧客に関する情報を表示する Lightning Web コンポーネント (LWC) の一部として JavaScript 関数を作成しました。
LWC がセキュリティを維持しながら効率的にデータを表示できるようにするには、開発者が上記の Apex クラスに実装する必要がある 3 つの変更はどれですか?
3 つの答えを選択してください
Answer: B,C,E
Explanation:
The three changes that the developer should implement in the Apex class to ensure the LWC can display data efficiently while preserving security are to annotate the Apex method with @AuraEnabled, implement the with sharing keyword in the class declaration, and annotate the Apex method with @AuraEnabled(Cacheable=True). The @AuraEnabled annotation allows the Apex method to be called from a Lightning web component, and exposes the method to the Lightning Data Service. The with sharing keyword enforces the sharing rules and permissions of the current user when accessing the records, and ensures that the data is secure and compliant. The @AuraEnabled(Cacheable=True) annotation enables the Apex method to be cached by the Lightning Data Service, and improves the performance and efficiency of the data retrieval. Implement the without keyword in the class declaration is not a valid answer, as it ignores the sharing rules and permissions of the current user when accessing the records, and compromises the data security and compliance. Use the WHERE clause within the SOQL query is not a valid answer, as it is not a change in the Apex class, and it does not affect the security or efficiency of the data display. Reference: [Call Apex Methods], [Using the with sharing or without sharing Keywords], [Improve Performance with Storable Actions], [Apex Developer Guide]
NEW QUESTION # 87
開発者は、反復的なタスクや機能の開発を簡素化する JavaScript ライブラリを作成し、そのライブラリを rsutils という静的リソースとして Salesforce にアップロードしました。別の開発者が新しい Lightning Web コンポーネント (LWC) をコーディングしていて、ライブラリを活用したいと考えています。LWC 内の静的リソースを適切にロードするステートメントはどれですか?
Answer: A
Explanation:
To load a static resource within a Lightning web component, you should use an import statement with the
@salesforce/resourceUrl module. This statement correctly refers to the static resource by its name.References: Lightning Web Components Developer Guide - Use Static Resources
NEW QUESTION # 88
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