ok for delete output in movement

src/lib/Movement.php

@@ -157,4 +157,15 @@ class Movement
         $entry->equipment_id, $entry->equipment_number, $entry->mvt_date);
     }
 	}
+
+  public function PossibilityDeleteOutput($output)
+  // return true if it's possible to delete this entry, else return false
+	{
+    if ($output->kind == 'Location / Prêt')
+    {
+      return $this->PossibilityRentEqmtEntry(
+        $output->equipment_id, $output->equipment_number, $output->mvt_date);
+    }
+    return true;
+	}
 }

src/templates/mouvements/sorties/supprimer_sortie.tpl

@@ -0,0 +1,13 @@
+<!-- nav bar -->
+{include file="%s_nav.tpl"|args:$plugin_tpl current_nav="sorties"}
+<!-- -->
+<!-- delete form -->
+{include file="%scommon/delete_form.tpl"|args:$plugin_tpl
+	legend="Supprimer cette sortie de matériels ?"
+	warning="Êtes-vous sûr de vouloir supprimer la sortie de « %s » ?"|args:$output_string
+  alert=""
+}
+<!-- -->
+<!-- footer -->
+{include file="admin/_foot.tpl"}
+<!-- -->

src/www/admin/mouvements/sorties/supprimer_sortie.php

@@ -0,0 +1,48 @@
+<?php
+
+// delete a specific entry
+
+namespace Garradin;
+
+require_once __DIR__ . '/../_inc.php';
+
+use Garradin\Plugin\Materiels\Equipment;
+use Garradin\Utils;
+
+// get the output to delete
+$output_to_delete = $mvt->get((int) qg('id'));
+if (!$output_to_delete)
+{
+	throw new UserException("Cette sortie n'existe pas.");
+}
+
+// check if delete form is submitted
+$csrf_key = 'delete_output_' . $output_to_delete->id;
+
+if (f('delete') && $form->check($csrf_key) && !$form->hasErrors())
+{
+	// delete the movement required
+	$mvt->delete($output_to_delete->id);
+	Utils::redirect(PLUGIN_URL . 'mouvements/sorties/index.php');
+}
+
+$eqmt = new Equipment;
+$corresponding_eqmt = $eqmt->get($output_to_delete->equipment_id);
+
+// check if it's possible to delete this output
+if ($mvt->PossibilityDeleteOutput($output_to_delete))
+{
+	// it's possible
+  $cancel_link = PLUGIN_URL . 'mouvements/sorties/index.php';
+	// construct string to send to template
+  $output_string = (string) $output_to_delete->equipment_number . " " . $corresponding_eqmt->designation . " à la date du " . date_create_from_format(
+    "Y-m-d", $output_to_delete->mvt_date)->format("d/m/y");
+
+  $tpl->assign(compact('output_string', 'csrf_key', 'cancel_link'));
+
+  $tpl->display(PLUGIN_ROOT . '/templates/mouvements/sorties/supprimer_sortie.tpl');
+
+} else {
+  throw new UserException(
+		"Cette sortie ne peut pas être supprimée car ça rendrait impossible l'historique des entrées et sorties de « " . $corresponding_eqmt->designation . " ». --- plus de 'retour de location / prêt' en entrée que de 'location / prêt' en sortie ! ---");
+}