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migration_glue.module
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migration_glue.module
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<?php
/**
* @file
* Module file.
*/
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Symfony\Component\Yaml\Yaml;
/**
* Implements hook_form_alter().
*/
function migration_glue_form_alter(array &$form, FormStateInterface $form_state, $form_id) {
// If migration mapper form.
if ($form_id == 'migration_admin_form') {
$form['output']['#tree'] = TRUE;
// Get source type.
$source_type = $form['source']['data_source']['#default_value'];
// In case of JSON/XML source type.
if ($source_type == 'json' || $source_type == 'xml') {
$form['source']['data_source_config_wrapper']['source']['read_directory'] = [
'#type' => 'checkbox',
'#title' => t('Is directory?'),
'#description' => t('If checked, then will iterate all JSON/XML files in the given directory.')
];
}
$default_option_label = $form['migration_group']['#options']['default'];
$form['migration_group']['#options'] = ['default' => $default_option_label];
// Using 'default' migration group for all.
// @todo - Make it generic.
$form['migration_group']['#default_value'] = 'default';
$form['output']['sample_output_yml'] = [
'#type' => 'markup',
'#markup' => '<div>In case you need to enhance the output YML, refer <a target="_blank" href="https://github.com/joshirohit100/migration_glue/blob/master/migration_sample_code.md">migration_sample_code.md</a> file.</div>',
'#html' => TRUE,
];
// Adding a submit button.
$form['next_step'] = [
'#type' => 'submit',
'#value' => t('Save migration'),
'#validate' => ['_migration_glue_validate_handler'],
'#submit' => ['_migration_glue_submit_handler'],
];
$form['actions']['back_link'] = [
'#title' => t('Go Back'),
'#type' => 'link',
'#url' => Url::fromRoute('migration_glue.list_migration', ['migration_group' => 'default']),
'#attributes' => [
'class' => ['button']
]
];
}
// For migration run screen.
elseif ($form_id == 'migration_execute_form') {
$form['operations']['submit']['#weight'] = 0;
$form['operations']['go_back'] = [
'#title' => t('Go Back'),
'#weight' => 0,
'#type' => 'link',
'#url' => Url::fromRoute('migration_glue.list_migration', ['migration_group' => 'default']),
'#attributes' => [
'class' => ['button']
]
];
$form['#submit'][] = '_migration_glue_migration_execute_submit_handler';
}
}
/**
* Custom submit handler for migration execution form.
*/
function _migration_glue_migration_execute_submit_handler(array &$form, FormStateInterface $form_state) {
\Drupal::messenger()->addStatus(t('Migration operation:@operation executed successfully.', [
'@operation' => $form_state->getValue('operation'),
]));
// Redirect to next step.
$form_state->setRedirect('migration_glue.list_migration', [
'migration_group' => 'default',
]);
}
/**
* Custom validation handler.
*/
function _migration_glue_validate_handler(array &$form, FormStateInterface $form_state) {
// Source type.
$source_type = $form_state->getValue('data_source');
// If XML or JSON.
if ($source_type == 'json' || $source_type == 'xml') {
$source = $form_state->getValue('data_source_config_wrapper')['source'];
// Directory path.
$dir_path = $source[$source_type . '_path'];
// If not a valid directory, throw error.
if ($source['read_directory'] && !is_dir($dir_path)) {
$form_state->setErrorByName('data_source_config_wrapper][source][' . $source_type . '_path', t('Please provide a valid directory.'));
}
elseif($source['read_directory']) {
// @todo: Need to revisit this once
// https://www.drupal.org/project/migrate_plus/issues/2921374 is fixed.
// Get all files from the directory of given type.
$files = \Drupal::service('migration_glue.manager')->getFilesInDirectory($dir_path, $source_type);
// If no file found in the given directory of given type.
if (empty($files)) {
$form_state->setErrorByName('data_source_config_wrapper][source][' . $source_type . '_path', t('No file available of the @type type in the @directory directory.', [
'@type' => $source_type,
'@directory' => $dir_path,
]));
}
else {
$form_state->setValue(['data_source_config_wrapper', 'source', $source_type . '_path'], $files);
}
}
}
}
/**
* Custom submit handler.
*/
function _migration_glue_submit_handler(array &$form, FormStateInterface $form_state) {
// Get exported output.
$output = $form_state->getValue('output')['export'];
// Parsed yml to array.
$parsed_yml = Yaml::parse($output);
if (is_array($parsed_yml) && !empty($parsed_yml)) {
// Register the migration in system.
\Drupal::service('migration_glue.manager')->registerMigration($parsed_yml);
// Adding status message.
\Drupal::messenger()->addStatus(t('Migration @migration has been created successfully.', ['@migration' => $parsed_yml['id']]));
}
else {
\Drupal::messenger()->addError(t('You just saved form without creating migration.'));
}
// Redirect to next step.
$form_state->setRedirect('migration_glue.list_migration', [
'migration_group' => 'default',
]);
}