Add gallery item deletion + making them optional (#224)

sqlx-data.json

@@ -846,6 +846,18 @@
       "nullable": []
     }
   },
+  "2162043897db26d0b55a0652c1a6db66c555f1d148ce69bd0bd0d2122de1bd6a": {
+    "query": "\n            DELETE FROM mods_gallery\n            WHERE mod_id = $1\n            ",
+    "describe": {
+      "columns": [],
+      "parameters": {
+        "Left": [
+          "Int8"
+        ]
+      },
+      "nullable": []
+    }
+  },
   "22185b4e3826d5ff4907b66b53ad3d0b64fb0904967c7e4d8d6aa5105b1486f5": {
     "query": "\n            SELECT n.id, n.user_id, n.title, n.text, n.link, n.created, n.read, n.type notification_type,\n            STRING_AGG(DISTINCT na.id || ', ' || na.title || ', ' || na.action_route || ', ' || na.action_route_method,  ' ,') actions\n            FROM notifications n\n            LEFT OUTER JOIN notifications_actions na on n.id = na.notification_id\n            WHERE n.user_id = $1\n            GROUP BY n.id, n.user_id;\n            ",
     "describe": {

src/database/models/project_item.rs

@@ -370,6 +370,16 @@ impl Project {
         .execute(&mut *transaction)
         .await?;
 
+        sqlx::query!(
+            "
+            DELETE FROM mods_gallery
+            WHERE mod_id = $1
+            ",
+            id as ProjectId
+        )
+        .execute(&mut *transaction)
+        .await?;
+
         sqlx::query!(
             "
             DELETE FROM mod_follows

src/routes/project_creation.rs

@@ -185,7 +185,7 @@ struct ProjectCreateData {
 
     #[validate(length(max = 64))]
     /// The multipart names of the gallery items to upload
-    pub gallery_items: Vec<String>,
+    pub gallery_items: Option<Vec<String>>,
 }
 
 pub struct UploadedFile {
@@ -426,8 +426,9 @@ pub async fn project_create_inner(
             continue;
         }
 
-        if project_create_data
-            .gallery_items
+        if let Some(gallery_items) = &project_create_data.gallery_items {
+            if
+                gallery_items
                 .iter()
                 .find(|x| *x == name)
                 .is_some()
@@ -464,6 +465,7 @@ pub async fn project_create_inner(
 
                 continue;
             }
+        }
 
         let index = if let Some(i) = versions_map.get(name) {
             *i