Accelerating Business Central AL Development with GitHub Copilot
Copilot, GitHub's advanced AI assistant, revolutionizes how developers create Application Language (AL) new levels of efficiency and innovation by leveraging Copilot's powerful natural language processing capabilities.

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Addressing Application Language Extension Development Challenges
1 Complexity of AL Extensions involves specialized knowledge and extensive coding to execute complex business logic and integrations.
2 Repetitive Tasks Creating boilerplate code and managing common functionalities can be tedious and susceptible to errors.
3 Maintaining Consistency It can be challenging to maintain consistent coding practices and naming conventions within a team.
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How Copilot for GitHub Empowers Application Language (AL) Extension Development
Automation
Copilot for GitHub can automatically generate code for common AL functionality, saving developers time and effort.
Natural Language Processing
Copilot for GitHub understands natural language, allowing developers to express their ideas and have Copilot translate them into working code.
Consistency and Quality
Copilot for GitHub enforces coding best practices and maintains consistency, improving code quality and maintainability.
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Automation

Scaffolding: Copilot can generate boilerplate code for common Application Language components, such as pages, tables, and codeunits. GitHub Copilot is an AI-powered code completion tool that assists developers by suggesting lines of code and entire functions. It works with various programming languages and can generate code for different components based on comments or partial code inputs. Since you are interested in examples for ALE components like pages, tables, and codeunits, here’s how you might use Copilot to help generate these examples in a development environment like AL for Microsoft Dynamics 365 Business Central. AL TableWhen creating a table in AL for Business Central, you typically define fields and properties. Here’s how you might start the comment for Copilot to generate a table for customer data: // AL Table to store customer information with fields for ID, Name, Address, and Phone Based on this comment, Copilot can suggest the following AL code: 2. AL Page Creating a page involves defining the layout and the fields that will be displayed. You can start with a comment like: // AL Page to display customer records with fields ID, Name, Address, and Phone Copilot may suggest something like this: 3. AL Codeunit Codeunits are used for writing business logic. Here’s how you might instruct Copilot to generate a simple codeunit to handle customer validation: // AL Codeunit for customer validation logic, checking if customer name and phone are provided Copilot’s suggested code might look like: codeunit 50100 "Customer Validation" { procedure ValidateCustomer(CustomerRec: Record Customer) result: Boolean { if CustomerRec.Name = '' then error('Customer name must be provided.'); if CustomerRec.Phone = '' then error('Customer phone number must be provided.'); return true; } By using such comments, GitHub Copilot can assist you in generating the boilerplate code for these common components in AL, helping speed up the development process. Remember, the quality and applicability of Copilot’s suggestions can vary, so always review the generated code for correctness and best practices. Integrations Copilot can create integration logic to connect Application Language Extensions with other Business Central modules and external systems. GitHub Copilot can aid in generating code for integration tasks between AL extensions and other modules within Microsoft Dynamics 365 Business Central, as well as external systems. The key to leveraging Copilot effectively is providing clear, concise descriptions of what the integration should accomplish. Below are several examples illustrating how you might prompt Copilot to generate integration logic. Integrating with the Inventory Module For integrating a custom extension with the Inventory module, you might want to synchronize inventory items or quantities. Here’s how you could phrase your comment for Copilot: // AL Code to synchronize inventory items from the custom product extension to the Inventory module Based on this, Copilot might suggest a code snippet like: 2. Connecting to an External REST API If you're developing logic to connect Business Central to an external REST API (e.g., for updating customer data), here’s how you might start: // AL Code to update customer data in an external CRM system via REST API Copilot could generate a function like: 3. Event Publishing for Module Interaction To facilitate interactions between modules, you might use events in Business Central. Here’s a comment prompt for Copilot: // AL Code to publish an event after a sales order is finalized, to notify other modules Copilot might help with: These examples illustrate the potential of GitHub Copilot in accelerating the development of complex integration logic within Business Central's AL language, fostering more efficient and error-reducing coding practices. Customizations Copilot can assist in building custom functionality, tailored to the specific needs of the business. I asked Copilot to write a codeunit template for automated lot assignment for sales order lines in Business Central using AL - based upon a project description document that I would upload. "After upload of my project document file, could you generate examples of tables and pages and codeunits needed to create this customization for BC?" Copilot Thank you for uploading the detailed project description. Based on the requirements described in the document, we need to create several components in AL for Microsoft Dynamics 365 Business Central to automate the lot assignment process for sales orders. Here’s how we might design the necessary tables, pages, and codeunits for this customization: 1. Table: Lot Information We need a table to store information about each lot, including its expiration date and available quantity. 2. Page: Lot Information A page to view and manage the lots in the system 3. Codeunit: Automatic Lot Assignment This codeunit will handle the logic of assigning lots to sales order lines based on the rules specified. 4. Additional Features and Error Handling Error handling needs to be robust, managing partial assignments and ensuring transactions are correctly rolled back if necessary. Integration with EDI needs to ensure that the lot assignment process is triggered correctly after new orders are inserted. This is a basic starting point. The actual implementation will need further refinement based on additional requirements, such as user permissions, detailed error logging, and optimizing the performance for large datasets. Make sure to test the code thoroughly in a sandbox environment to handle any edge cases or potential bugs.

Natural Language Processing

Rapid Prototyping: Developers can describe their ideas in natural language, and Copilot will convert them into working code prototypes. Knowledge Capture Copilot can learn from the development team's coding patterns and preferences, improving its assistance over time. Contextual Assistance Copilot understands the context of the Application Language development, providing relevant suggestions and code examples. Examples of Copilot using Natural Language Processing to make AL Development better and faster GitHub Copilot's effectiveness in aiding the development of Application Language (AL) extensions for Microsoft Dynamics 365 Business Central relies heavily on its use of natural language processing (NLP). This capability allows Copilot to interpret descriptive comments or partial code snippets, providing developers with code suggestions that accelerate prototyping, enhance knowledge capture, and deliver contextual assistance. Here is how GitHub Copilot might leverage NLP in these scenarios, providing hypothetical code examples for each case. 1. Rapid Prototyping Scenario: You're starting a new feature to manage customer loyalty points in Business Central. You begin by writing a high-level description of the main function. Comment in Code: // Function to calculate and update loyalty points based on the total invoice amount and customer category GitHub Copilot's Suggested Code: procedure UpdateLoyaltyPoints(CustomerID: Code[20]; InvoiceAmount: Decimal) var Customer: Record Customer; LoyaltyPoints: Integer; CategoryMultiplier: Decimal; begin if Customer.Get(CustomerID) then begin // Determine points multiplier based on customer category case Customer."Category" of 'Gold': CategoryMultiplier := 1.5; 'Silver': CategoryMultiplier := 1.2; 'Bronze': CategoryMultiplier := 1.0; else CategoryMultiplier := 1.0; end; // Calculate loyalty points LoyaltyPoints := Round(InvoiceAmount * CategoryMultiplier); // Update customer record Customer."Loyalty Points" += LoyaltyPoints; Customer.Modify(); Commit(); Message('Loyalty points updated to %1 for customer %2', Customer."Loyalty Points", CustomerID); end else begin Error('Customer not found.'); end; end; This example demonstrates rapid prototyping by allowing developers to quickly flesh out the core logic of new features without needing to draft every detail from scratch. 2. Knowledge Capture Scenario: A developer is unfamiliar with handling transactions in Business Central and begins to draft a comment asking for help. Comment in Code: // How to handle database transactions when updating multiple records in Business Central GitHub Copilot's Suggested Code: procedure UpdateMultipleRecords() var Customer: Record Customer; SalesHeader: Record "Sales Header"; begin if Customer.FindSet() then repeat // Perform some update on Customer Customer."Credit Limit" += 1000; Customer.Modify(); until Customer.Next() = 0; if SalesHeader.FindSet() then repeat // Perform some update on Sales Header SalesHeader."Document Status" := SalesHeader."Document Status"::Released; SalesHeader.Modify(); until SalesHeader.Next() = 0; // Commit all changes Commit(); end; This snippet instructs on correctly grouping modifications to ensure atomic transaction behavior, capturing domain-specific best practices for handling Business Central transactions. 3. Contextual Assistance Scenario: You are working on integrating a custom module with the inventory system and you start with a comment. // Integrate custom module with Business Central inventory to adjust stock based on sales GitHub Copilot's Suggested Code: procedure AdjustInventoryBasedOnSales(SalesOrderID: Code[20]) var SalesLine: Record "Sales Line"; Item: Record Item; NewQuantity: Decimal; begin SalesLine.SetRange("Document No.", SalesOrderID); if SalesLine.FindSet() then repeat Item.Get(SalesLine."No."); NewQuantity := Item."Quantity Available" - SalesLine.Quantity; if NewQuantity >= 0 then begin Item."Quantity Available" := NewQuantity; Item.Modify(); Message('Inventory adjusted for item %1.', SalesLine."No."); end else Error('Insufficient inventory for item %1.', SalesLine."No."); until SalesLine.Next() = 0; end; This suggestion provides contextual assistance, showing how to adjust inventory levels based on sales, a common requirement when integrating new modules with existing systems. Each of these examples highlights GitHub Copilot's potential in using Natural Language Processing to understand developers' intents from natural language comments and provide meaningful, contextually appropriate code suggestions that can accelerate development, reduce the learning curve, and enhance code quality in AL development for Business Central.

Code Quality and Consistency

Linting and Formatting: Copilot automatically enforces coding standards and best practices, ensuring a consistent codebase. Example: Enforcing Coding Standards with GitHub Copilot and Additional Tools Here's how you might integrate GitHub Copilot with other tools to promote coding standards and best practices in a BC Application Language development project: Using GitHub Copilot for Code Suggestions: Scenario: You are developing a custom module in AL to handle inventory adjustments. Copilot Suggestion: You start typing a comment or a function signature, and Copilot might suggest: Here, Copilot suggests a basic inventory adjustment function. The use of Commit might be appropriate depending on the broader transaction context. 2. Linting and Formatting Tools for AL Linting and formatting tools help identify problems in code before deployment, which can reduce time and costs. Linting tools, also known as lint tools, analyze source code for stylistic and programmatic errors. Formatting tools automatically format source code to make it easier to read and understand. Linting is different from formatting because linting analyzes how code runs, while formatting only restructures how it appears. Tools like AL Linter or AL Formatter: After writing code, running it through linters and formatters can help ensure it adheres to coding standards specific to AL. These tools can enforce naming conventions, check for unused variables, and ensure best practices in error handling and transaction management. 3. Static Code Analysis Tools: Tools like the AL Code Analyzer: Integrate these tools into your CI/CD pipeline. In software engineering, CI/CD or CICD is the combined practices of continuous integration and continuous delivery or, less often, continuous deployment. They are sometimes referred to collectively as continuous development or continuous software development. Wikipedia They can analyze the codebase for potential errors, code smells, and even performance issues by enforcing rules such as avoiding overly complex functions or ensuring proper transaction handling. 4. Code Review Practices: Manual and Automated Reviews: Utilize GitHub pull requests for peer code reviews. Automated tools can be integrated to review pull requests and enforce rules, such as requiring certain test coverage or checking for specific code patterns. 5. Pre-commit Hooks: Using a version control system like Git with pre-commit hooks: Configure hooks to run formatting and linting before code is committed, ensuring all code meets the team’s standards. Example pre-commit hook for AL might include running AL Linter or AL Formatter before each commit. Example Scenario Using Copilot in AL Suppose you are developing a custom sales order processing feature in AL. You might write a comment or start defining a procedure, prompting Copilot to suggest: With this suggestion: Best Practices Enforced: Basic validation is implemented, checking the order status and document date. Additional Steps: Enhance the function by adding more complex business rules validations, checking for credit limits, or ensuring inventory availability. After coding, use AL Code Analyzer to check for any potential issues or improvements. While GitHub Copilot can accelerate development by suggesting code snippets and patterns, a consistent and standard-compliant codebase in AL often requires combining Copilot's capabilities with robust development practices, including code reviews, static analysis, and adherence to a structured coding standard. Refactoring Suggestions Copilot provides intelligent recommendations to improve the structure and maintainability of the Application Language Extension code. Code improvements and Refactorings GitHub Copilot, powered by AI, can assist developers by suggesting code improvements and refactorings, particularly by providing snippets that optimize or enhance existing code. While Copilot doesn't refactor code automatically in the traditional sense, it does provide intelligent suggestions based on the code context you're working within and the patterns it has learned from a vast corpus of publicly available code. Below are some examples of how GitHub Copilot could potentially help with refactoring and improving the maintainability of Application Language (AL) code used in extensions for Microsoft Dynamics 365 Business Central. Example 1: Simplifying Conditional Logic Original Code: procedure CheckCreditLimit(Customer: Record Customer) begin if Customer."Balance" + Customer."Sales (LCY)" > Customer."Credit Limit" then if Customer."Credit Limit" > 0 then Error('Credit limit exceeded.'); end; Copilot Suggestion for Refactoring: Copilot might suggest combining the conditions to make the code cleaner and more readable: procedure CheckCreditLimit(Customer: Record Customer) begin if Customer."Credit Limit" > 0 and (Customer."Balance" + Customer."Sales (LCY)") > Customer."Credit Limit" then Error('Credit limit exceeded.'); end; Example 2: Extracting Reusable Code Original Code: procedure PostSalesOrder(SalesHeader: Record "Sales Header") begin // Some posting logic if SalesHeader."Document Type" = SalesHeader."Document Type"::Order then // Logic to handle order else if SalesHeader."Document Type" = SalesHeader."Document Type"::Invoice then // Logic to handle invoice end; procedure PostPurchaseOrder(PurchaseHeader: Record "Purchase Header") begin // Some posting logic if PurchaseHeader."Document Type" = PurchaseHeader."Document Type"::Order then // Logic to handle order else if PurchaseHeader."Document Type" = PurchaseHeader."Document Type"::Invoice then // Logic to handle invoice end; Copilot Suggestion for Refactoring: Copilot might suggest creating a generic posting procedure to avoid duplication: procedure PostDocument(DocumentType: Enum "Document Type"; DocumentSubType: Option Order, Invoice) begin if DocumentSubType = Order then // Generic logic to handle order else if DocumentSubType = Invoice then // Generic logic to handle invoice end; This approach promotes reuse and minimizes code duplication across similar procedures. Example 3: Improving Error Handling Original Code: Copilot Suggestion for Refactoring: To improve maintainability and error handling, Copilot might suggest adding detailed error messages and possibly a logging mechanism: procedure ValidateItem(Item: Record Item) begin if Item."Quantity" <= 0 then LogError('Validation failed for Item No. ' + Item."No." + ' due to non-positive quantity.'); Error(StrSubstNo('Quantity for item %1 must be greater than zero.', Item."No.")); end; procedure LogError(ErrorMessage: Text) begin // Logic to log errors to a file or a monitoring system end; Example 4: Optimizing Loop Performance Original Code: To optimize performance, especially with large datasets: This change uses ModifyAll to update all records at once where possible, reducing the number of writes to the database. These examples illustrate how GitHub Copilot can suggest improvements based on typical coding patterns and practices. It's important to review all suggestions for suitability within your specific context, especially considering Business Central's transactional nature and the business logic implications of any change. Inline Documentation Copilot can generate comprehensive documentation and comments, enhancing the readability and understanding of the Application Language Extensions for Microsoft Dynamics 365 Business Central. Based on the Project.docx file I just uploaded, give me an example of Copilot generating comprehensive documentation and comments, enhancing the readability and understanding of the Application Language Extensions for Microsoft Dynamics 365 Business Central.Example: Comprehensive Documentation for Automatic Lot Assignment /** Codeunit 50100 AutoAssignLot This codeunit automates the assignment of lot numbers to sales order lines based on specific business rules. The lot assignment ensures that no lot with an expiration date earlier than 9 months from the sales order date is assigned. It prefers lots with the earliest expiration date, and among those, the one with the lowest lot code. The following key processes are included: Iterative lot assignment ensuring the closest expiration date that complies with the time constraint. Handling multiple lots if a single lot does not cover the required quantity. Automatically updating the 'Lots Assigned' status upon completion. Dependencies: Requires the Sales Order and Lot Information tables to be predefined. Usage: This codeunit should be scheduled to run periodically and can also be triggered manually via a UI action on the Sales Order page. */ codeunit 50100 "AutoAssignLot" { /** * Runs the main process to assign lot numbers to all unprocessed sales orders. * It only processes orders where 'Lots Assigned' is marked as 'No'. */ procedure RunLotAssignmentForAllOrders() var SalesOrderHeader: Record "Sales Order Header"; begin SalesOrderHeader.SetRange("Lots Assigned", false); if SalesOrderHeader.FindSet() then repeat AssignLotsToOrder(SalesOrderHeader."No."); until SalesOrderHeader.Next() = 0; end; /** * Assigns lots to a single sales order based on its document number. * This method handles the logic to select appropriate lots and update order line information. * @param SalesOrderNo The document number of the sales order to process. */ procedure AssignLotsToOrder(SalesOrderNo: Code[20]) var SalesLine: Record "Sales Line"; LotInformation: Record "Lot Information"; NeededQuantity: Decimal; begin SalesLine.SetRange("Document No.", SalesOrderNo); if SalesLine.FindSet() then repeat NeededQuantity := SalesLine.Quantity; // Logic to find and assign lots if FindAndAssignLots(SalesLine, NeededQuantity) then MarkLineAsComplete(SalesLine); until SalesLine.Next() = 0; UpdateSalesOrderStatus(SalesOrderNo); end; /** * Updates the 'Lots Assigned' status of a sales order to 'Yes' after all lines are processed. * @param SalesOrderNo The document number of the sales order to update. */ local procedure UpdateSalesOrderStatus(SalesOrderNo: Code[20]) var SalesOrderHeader: Record "Sales Order Header"; begin if SalesOrderHeader.Get(SalesOrderNo) then begin SalesOrderHeader."Lots Assigned" := true; SalesOrderHeader.Modify(); end; end; }This example of code documentation and comments provided by GitHub Copilot: Describes the purpose and usage of each function within the codeunit. Explains the parameters and processes involved, such as the criteria for lot selection and the business rules applied. Offers insights into the dependencies and effects of running this codeunit, helping both current and future developers understand the code's functionality and its impact on the system. This comprehensive documentation approach can significantly enhance the maintainability and readability of the code, making it easier for teams to manage and extend their AL solutions effectively.

Reducing Development Time and Effort, without sacrificing quality. In fact - at better quality!
Faster Delivery
Copilot's automation and assistance capabilities enable developers to create Application Language Extensions for Microsoft Dynamics 365 Business Central more efficiently and quickly.
Increased Creativity
By handling repetitive tasks, Copilot frees AL Developers to focus on more innovative solutions.
Improved Productivity
Copilot's insights and recommendations help Application Language Developers write higher-quality code in less time.
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Unleash the Power of Copilot for Microsoft Dynamics 365 Business Central
Copilot for GitHub empowers developers to create more robust and efficient Application Language Extensions for Microsoft Dynamics 365 Business Central. By automating repetitive tasks, leveraging natural language processing, and improving code quality, Copilot accelerates AL Development and enables teams to deliver code projects faster, better and cheaper.
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PDG Consultants | Financial Software | Clearwater

PDG Consultants | Financial Software | Clearwater