catalog editor: load catalog, region, season data

cateditor/src/components/CatalogEditor.vue

@@ -49,14 +49,18 @@ export default {
     CatalogContents
   },
   data: () => ({
-    /* seasons: [ 'SS19', 'FW19', 'SS20' ],
-     * regions: [ 'US', 'Canada', 'Mexico' ],
-     * season: null,
-     * region: null,
-     * name: null, */
-    /*         ispublic: true, */
-    step: 1
-  })
+    step: 1,
+  }),
+  mounted: function() {
+    // catalogID is set by django
+    // in a script block in our parent page.
+    var catalogID = JSON.parse(document.getElementById('catalogID').textContent)
+    if (catalogID > 0) {
+      this.$store.dispatch('loadCatalog', catalogID)
+    } else {
+      this.$store.dispatch('newCatalog')
+    }
+  }
 }
 </script>