Poor result with TemplateConfigPass

src/Configuration/TemplateConfigPass.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace AlterPHP\EasyAdminExtensionBundle\Configuration;
+
+use EasyCorp\Bundle\EasyAdminBundle\Configuration\ConfigPassInterface;
+
+/**
+ * Adds templates :
+ *     - Embedded lists in show view
+ *
+ * @author Pierre-Charles Bertineau <pc.bertineau@alterphp.com>
+ */
+class TemplateConfigPass implements ConfigPassInterface
+{
+    private $twigLoader;
+    private $defaultBackendTemplates = array(
+        'field_embedded_list' => '@EasyAdmin/default/field_embedded_list.html.twig',
+    );
+
+    public function __construct(\Twig_Loader_Filesystem $twigLoader)
+    {
+        $this->twigLoader = $twigLoader;
+    }
+
+    public function process(array $backendConfig)
+    {
+        $backendConfig = $this->processEntityTemplates($backendConfig);
+
+        return $backendConfig;
+    }
+
+    /**
+     * Determines the template used to render each backend element. This is not
+     * trivial because templates can depend on the entity displayed and they
+     * define an advanced override mechanism.
+     *
+     * @param array $backendConfig
+     *
+     * @return array
+     */
+    private function processEntityTemplates(array $backendConfig)
+    {
+        foreach ($backendConfig['entities'] as $entityName => $entityConfig) {
+            foreach (array('list', 'show') as $view) {
+                foreach ($entityConfig[$view]['fields'] as $fieldName => $fieldMetadata) {
+                    // if the field defines its own template, resolve its location
+                    if (isset($fieldMetadata['template'])) {
+                        $templatePath = $fieldMetadata['template'];
+
+                        if (isset($this->defaultBackendTemplates[$templatePath])) {
+                            $templatePath = $this->defaultBackendTemplates[$templatePath];
+                        }
+
+                        // template path should contain the .html.twig extension
+                        // however, for usability reasons, we silently fix this issue if needed
+                        if ('.html.twig' !== substr($templatePath, -10)) {
+                            $templatePath .= '.html.twig';
+                            @trigger_error(sprintf('Passing a template path without the ".html.twig" extension is deprecated since version 1.11.7 and will be removed in 2.0. Use "%s" as the value of the "template" option for the "%s" field in the "%s" view of the "%s" entity.', $templatePath, $fieldName, $view, $entityName), E_USER_DEPRECATED);
+                        }
+
+                        // before considering $templatePath a regular Symfony template
+                        // path, check if the given template exists in any of these directories:
+                        // * app/Resources/views/easy_admin/<entityName>/<templatePath>
+                        // * app/Resources/views/easy_admin/<templatePath>
+                        $templatePath = $this->findFirstExistingTemplate(array(
+                            'easy_admin/'.$entityName.'/'.$templatePath,
+                            'easy_admin/'.$templatePath,
+                            $templatePath,
+                        ));
+                    } else {
+                        // At this point, we don't know the exact data type associated with each field.
+                        // The template is initialized to null and it will be resolved at runtime in the Configurator class
+                        $templatePath = null;
+                    }
+
+                    $entityConfig[$view]['fields'][$fieldName]['template'] = $templatePath;
+                }
+            }
+
+            $backendConfig['entities'][$entityName] = $entityConfig;
+        }
+
+        return $backendConfig;
+    }
+
+    private function findFirstExistingTemplate(array $templatePaths)
+    {
+        foreach ($templatePaths as $templatePath) {
+            if (null !== $templatePath && $this->twigLoader->exists($templatePath)) {
+                return $templatePath;
+            }
+        }
+    }
+}

src/Resources/config/services.xml

@@ -25,6 +25,11 @@
             <argument type="service" id="alterphp.easyadmin_extension.helper.embedded_list"/>
             <tag name="form.type"/>
         </service>
+        <service id="alterphp.easyadmin_extension.config_pass.template" class="AlterPHP\EasyAdminExtensionBundle\Configuration\TemplateConfigPass">
+            <argument type="service" id="twig.loader.filesystem" />
+            <!-- Makes it process just after EasyAdmin TemplateConfigPass -->
+            <tag name="easyadmin.config_pass" priority="21"/>
+        </service>
 
         <!-- Admin security roles -->
         <service id="alterphp.easyadmin_extension.helper.editable_roles" class="AlterPHP\EasyAdminExtensionBundle\Helper\EditableRolesHelper">

src/Resources/views/default/field_embedded_list.html.twig

@@ -1,3 +1,6 @@
+{# TODO: keep or not ? #}
+{% set filters = field_options.template_options.filters|default({})|merge({(field_options.template_options.association_alias): item.id }) %}
+
 {% set action_params = { entity: entity, action: 'embeddedList', filters: filters } %}
 {% if sort is defined %}
   {% set action_params = action_params|merge({ sortField: sort.field, sortDirection: sort.direction}) %}