Make screen slugs editable

src/data/screens.js

@@ -7,12 +7,18 @@ function slugify(value) {
     .replace(/-{2,}/g, '-');
 }
 
-async function uniqueScreenSlug(pool, baseSlug) {
+async function uniqueScreenSlug(pool, baseSlug, excludeId) {
   const start = baseSlug || `screen-${Date.now()}`;
   let candidate = start;
   let counter = 2;
   while (true) {
-    const [rows] = await pool.query('SELECT id FROM screens WHERE slug = ?', [candidate]);
+    const params = [candidate];
+    let sql = 'SELECT id FROM screens WHERE slug = ?';
+    if (excludeId !== undefined && excludeId !== null) {
+      sql += ' AND id <> ?';
+      params.push(excludeId);
+    }
+    const [rows] = await pool.query(sql, params);
     if (!rows.length) {
       return candidate;
     }