Natuurlijk, ik help je graag bij het ontwikkelen van een geavanceerde contentmigratietool voor je Craft CMS-website. Hieronder vind je gedetailleerde instructies verdeeld in verschillende stappen: data mapping, dataconversie, foutafhandeling en integratie binnen Craft CMS. 1. Voorbereiding en planning a. Inventariseer de bestaande content: - WordPress database: posts, pagina’s, custom fields, taxonomieën, mediabestanden. - CSV-export: structuur, kolommen, datatypes. b. Bepaal de doelstructuur in Craft CMS: - Entry types, sections, fields, taxonomies, assets. c. Maak een mapping document: - Koppel WordPress velden en CSV-kolommen aan Craft veld- en contenttypes. 2. Data Extractie a. WordPress database: - Gebruik SQL queries of WP-CLI commands om data te exporteren. - Exporteer relevante tabellen: wp_posts, wp_postmeta, wp_terms, wp_term_relationships, wp_term_taxonomy, wp_media. b. CSV: - Zorg dat de CSV correct is geëxporteerd en alle benodigde kolommen bevat. 3. Data Mapping a. Definieer mappings: - WordPress post_title → Craft entry title - WordPress post_content → Craft content - Custom fields (meta data) → Craft custom fields - Taxonomieën → Craft categories/volgtaxonomieën - Media URL’s → Assets in Craft b. Voor CSV: - Map kolommen naar juiste Craft velden en velden binnen de juiste secties. 4. Dataconversie en Transformatie a. Data cleaning: - Verwijder onnodige HTML tags. - Normaliseer datums, tijden, en tekstformaten. b. Content conversie: - Converteer shortcodes of speciale markup naar Craft compatible syntax. - Verwerk mediapaden zodat ze verwijzen naar de juiste assets. c. Automatisering: - Gebruik scripts (bijv. PHP, Python) voor batch conversie en transformatie. 5. Foutafhandeling a. Validatie: - Controleer of alle verplichte velden gevuld zijn. - Controleer op dataconflicten of ontbrekende referenties. b. Logging: - Log alle fouten en waarschuwingen met details. c. Rollback: - Implementeer een mechanisme om mislukte imports te herstellen of te herstarten. d. User feedback: - Geef duidelijke meldingen en rapporten over de voortgang en fouten. 6. Implementatie binnen Craft CMS a. Gebruik de Craft CLI en Plugins: - Overweeg plugins zoals ‘Feed Me’ voor eenvoudige imports, of ontwikkel eigen scripts. b. Custom migratie scripts: - Schrijf PHP scripts die gebruik maken van Craft’s Element API. - Importeer data via de Craft CMS services (Entry::create(), Asset::saveAssets()). c. Automatisering: - Integreer scripts met Composer of CI/CD pipelines voor herhaalde migraties. d. Validatie en testen: - Test migratie in een staging omgeving. - Controleer de integriteit van de geïmporteerde content. 7. Tips en best practices - Maak back-ups van je bestaande Craft CMS database voordat je begint. - Werk in fases: importeer eerst basiscontent, daarna media, en tenslotte complexe relaties. - Documenteer elke stap en maak gebruik van versiebeheer voor je scripts. - Overweeg het gebruik van de Craft CMS Element API en custom modules voor complexe logica. - Automatiseer zoveel mogelijk met scripts om menselijke fouten te minimaliseren. Door deze stappen te volgen, kun je een robuuste en flexibele contentmigratietool ontwikkelen die naadloos je oude content naar Craft CMS overzet, met goede foutafhandeling en integratie. Mocht je specifieke codevoorbeelden of verdere details nodig hebben, laat het gerust weten!

Of course. Developing an advanced content migration tool for Craft CMS is a significant undertaking. This guide will provide a structured, step-by-step approach to building a robust and flexible migration tool. ### Overview of the Approach We will create a **Craft CMS Module**. This is the modern, recommended way to extend Craft's functionality. The module will provide a custom console command to run migrations. This approach is superior to a one-off script as it's reusable, maintainable, and integrates seamlessly with Craft's ecosystem. --- ### Step 1: Project Setup & Module Creation 1. **Create the Module Skeleton:** Navigate to your Craft project's root and use Craft's command to generate a module. Let's call it `ContentMigrator`. ```bash php craft make/module content-migrator ``` This creates the basic structure in `modules/contentmigrator/`. 2. **Module Structure:** Your module directory should look like this: ``` modules/ └── contentmigrator/ ├── Module.php # The main module class ├── console/ │ └── controllers/ # Home for our console command ├── services/ # Business logic for each source ├── models/ # Data models for mapping └── templates/ # (Optional) For a future control panel UI ``` 3. **Register the Module:** Ensure your module is registered in `config/app.php`: ```php 'modules' => [ 'content-migrator' => \modules\contentmigrator\Module::class, ], 'bootstrap' => ['content-migrator'], ``` --- ### Step 2: Building the Core Components #### A. The Console Command Create a console command to handle the migration. This will be the entry point. **File:** `modules/contentmigrator/console/controllers/MigrateController.php` ```php <?php namespace modules\contentmigrator\console\controllers; use craft\console\Controller; use modules\contentmigrator\services\WordPressService; use modules\contentmigrator\services\CsvService; use yii\console\ExitCode; class MigrateController extends Controller { public $source; // e.g., 'wordpress' or 'csv' public $filePath; // Path to CSV or WordPress XML (WXR) public function options($actionID): array { return ['source', 'filePath']; } public function actionIndex() { switch ($this->source) { case 'wordpress': $service = new WordPressService(); $result = $service->migrate($this->filePath); break; case 'csv': $service = new CsvService(); $result = $service->migrate($this->filePath); break; default: $this->stderr("Invalid source. Use 'wordpress' or 'csv'.\n"); return ExitCode::USAGE; } if ($result) { $this->stdout("Migration from {$this->source} completed successfully!\n"); return ExitCode::OK; } else { $this->stderr("Migration failed. Check the logs.\n"); return ExitCode::SOFTWARE; } } } ``` **Usage:** `php craft content-migrator/migrate --source=wordpress --filePath=/path/to/export.xml` --- #### B. Data Mapping & Conversion (The Heart of the Tool) This is the most critical part. You need to define how data from the source maps to Craft's structure. **1. Define a Mapping Configuration:** Create a config file (e.g., `config/migration-map.php`) that returns an array. This keeps your mapping rules separate from your code. ```php <?php // config/migration-map.php return [ 'wordpress' => [ 'post' => [ // WordPress post_type 'craftSection' => 'blog', // Handle of your Craft section 'craftType' => 'article', // Handle of your entry type 'fieldMap' => [ 'post_title' => 'title', 'post_content' => 'body', 'post_excerpt' => 'excerpt', 'post_date' => 'postDate', // Map Custom Fields: 'wp_meta_key' => 'craftFieldHandle' '_yoast_wpseo_metadesc' => 'seoDescription', ], ], ], 'csv' => [ 'default' => [ 'craftSection' => 'news', 'craftType' => 'newsArticle', 'fieldMap' => [ 'Headline' => 'title', 'Body Copy' => 'body', 'Publish Date' => 'postDate', 'Image URL' => 'mainImage', // You'll need to handle downloading ], // Define a custom callback for complex transformations 'callbacks' => [ 'postDate' => function($csvValue) { return DateTime::createFromFormat('m/d/Y', $csvValue); } ] ], ], ]; ``` **2. Create Service Classes:** Create separate services for each source to keep code clean (`WordPressService.php`, `CsvService.php`). These services will: * Parse the source data (XML, CSV). * Load the mapping configuration. * Iterate through each item. * Transform the data. * Create and save Craft entries. **Example Snippet from `WordPressService.php`:** ```php public function migrate($filePath) { $mappingConfig = \Craft::$app->config->getConfigFromFile('migration-map'); $posts = $this->parseWordPressExport($filePath); // Implement an XML parser $transaction = \Craft::$app->db->beginTransaction(); try { foreach ($posts as $post) { $entry = new \craft\elements\Entry(); $entry->sectionId = \craft\elements\Section::find()->handle($mappingConfig['wordpress']['post']['craftSection'])->one()->id; $entry->typeId = \craft\elements\EntryType::find()->handle($mappingConfig['wordpress']['post']['craftType'])->one()->id; // Apply the field mapping foreach ($mappingConfig['wordpress']['post']['fieldMap'] as $wpField => $craftField) { $value = $this->getValueFromPost($post, $wpField); // Helper method $value = $this->transformValue($craftField, $value); // For data conversion $entry->setFieldValue($craftField, $value); } if (!\Craft::$app->elements->saveElement($entry)) { \Craft::error("Failed to save entry: " . print_r($entry->getErrors(), true), __METHOD__); // Decide if you want to throw an exception or continue } } $transaction->commit(); return true; } catch (\Throwable $e) { $transaction->rollBack(); \Craft::error("Migration failed: " . $e->getMessage(), __METHOD__); return false; } } ``` --- ### Step 3: Handling Complex Data Conversion Your service methods need to handle complex transformations: * **Dates:** Convert source date strings to `DateTime` objects. * **Relations:** Parse tags/categories from a comma-separated string, find or create corresponding Craft Tags/Categories, and relate them. Use `craft\elements\Tag::find()->title($tagName)->one()`. * **Assets (Images/Files):** 1. Download the file from the source URL to a temp folder using `curl` or `file_get_contents`. 2. Create an asset volume in Craft if it doesn't exist. 3. Use `craft\elements\Asset` to create a new asset from the temp file. 4. Assign the asset's ID to the entry's image field. * **Booleans:** Convert "yes"/"no", 1/0, etc., to `true`/`false`. * **Redactors/HTML:** Clean up HTML from WordPress using HTML Purifier to ensure it's valid and safe for Craft's Redactor field. --- ### Step 4: Robust Error Handling & Logging 1. **Database Transactions:** Wrap your entire migration in a DB transaction (as shown above). This ensures that if *any* part fails, the entire migration is rolled back, preventing a partially migrated, corrupted state. 2. **Try-Catch Blocks:** Use detailed try-catch blocks around operations that can fail (e.g., saving elements, downloading files). 3. **Craft's Logger:** Use `\Craft::error()`, `\Craft::warning()`, and `\Craft::info()` extensively. This logs messages to `storage/logs/`, which is invaluable for debugging. 4. **Validation:** Before starting, validate that the source file exists, is readable, and that the target Craft sections/fields exist. 5. **Progress Output:** In your console command, output progress using `$this->stdout("Processing item $i/$total...\n");`. --- ### Step 5: Final Integration & Execution 1. **Dry Run Mode:** Implement a `--dry-run` flag in your console command. This should go through the entire process *without* actually saving anything to the database, only logging what *would* happen. This is essential for testing your mapping. 2. **Run the Migration:** * Test with a small, representative subset of your data first. * Run the command: `php craft content-migrator/migrate --source=wordpress --filePath=/path/to/wordpress-export.xml` * Monitor the output and the `storage/logs/web.log` file for any errors. 3. **Post-Migration:** Write a summary log file listing all created entries, any skipped items, and errors encountered. ### Advanced Consideration: Control Panel Interface Once the console command is stable, you can extend the module to add a CP section. This would allow content managers to upload files and run migrations from the browser. 1. Create a controller in `modules/contentmigrator/controllers/`. 2. Add actions for uploading files and triggering the migration (which would call your service classes in the background, perhaps via a queue job). 3. Create templates in `modules/contentmigrator/templates/` for the upload forms and result reporting. This approach gives you a professional, powerful, and maintainable tool that can handle complex content migrations into Craft CMS.