Allow to see plugins and themes list without internet connection. Also add a more helpful message in the "add" view. re https://github.com/getgrav/grav/issues/1008

CHANGELOG.md

@@ -3,6 +3,7 @@
 
 1. [](#improved)
     * It is now possible to manually specify a format for the `datetime` field [#1261](https://github.com/getgrav/grav/issues/1261)
+    * Allow to see plugins and themes list without internet connection. Also add a more helpful message in the "add" view [grav#1008](https://github.com/getgrav/grav/issues/1008)
 1. [](#bugfix)
     * Fixed issue with downloaded package when installing a testing release
 

classes/admin.php

@@ -708,15 +708,21 @@ class Admin
             return false;
         }
 
-        return $local
-            ? $gpm->getInstalledPlugins()
-            : $gpm->getRepositoryPlugins()->filter(function (
-                $package,
-                $slug
-            ) use ($gpm) {
-                return !$gpm->isPluginInstalled($slug);
-            })
-            ;
+        if ($local) {
+            return $gpm->getInstalledPlugins();
+        } else {
+            $plugins = $gpm->getRepositoryPlugins();
+            if ($plugins) {
+                return $plugins->filter(function (
+                    $package,
+                    $slug
+                ) use ($gpm) {
+                    return !$gpm->isPluginInstalled($slug);
+                });
+            } else {
+                return [];
+            }
+        }
     }
 
     /**
@@ -734,11 +740,21 @@ class Admin
             return false;
         }
 
-        return $local
-            ? $gpm->getInstalledThemes()
-            : $gpm->getRepositoryThemes()->filter(function ($package, $slug) use ($gpm) {
-                return !$gpm->isThemeInstalled($slug);
-            });
+        if ($local) {
+            return $gpm->getInstalledThemes();
+        } else {
+            $themes = $gpm->getRepositoryThemes();
+            if ($themes) {
+                return $themes->filter(function (
+                    $package,
+                    $slug
+                ) use ($gpm) {
+                    return !$gpm->isThemeInstalled($slug);
+                });
+            } else {
+                return [];
+            }
+        }
     }
 
     /**

languages/en.yaml

@@ -633,3 +633,4 @@ PLUGIN_ADMIN:
   NEVER_CACHE_TWIG_HELP: "Only cache content and process Twig every time for pages. Ignores twig_first setting."
   ALLOW_WEBSERVER_GZIP: "Allow WebServer Gzip"
   ALLOW_WEBSERVER_GZIP_HELP: "Off by default. When enabled, WebServer-configured Gzip/Deflate compression will work, but http connection will not be closed before onShutDown() event causing slower page loading"
+  OFFLINE_WARNING: "The connection to the GPM cannot be established"

themes/grav/templates/partials/plugins-list.html.twig

@@ -17,7 +17,7 @@
     {% for slug, plugin in admin.plugins(not installing).toArray|ksort %}
         {% set data = admin.data('plugins/' ~ slug) %}
         {% set isTestingRelease = admin.gpm.isTestingRelease(slug) %}
-        {% set releaseDate = plugin.date ?: admin.gpm.findPackage(slug).date %}
+        {% set releaseDate = plugin.date ?: admin.gpm.findPackage(slug, true).date %}
 
         <tr data-gpm-plugin="{{ slug|url_encode }}" data-gpm-name="{{ plugin.name }}" data-gpm-release-date="{{ releaseDate }}" data-gpm-author="{{ plugin.author.name }}" data-gpm-official="{{ admin.isTeamGrav(plugin) ? '1' : '2' }}" data-gpm-updatable="{{ admin.gpm.isUpdatable(slug) ? '1' : '2' }}" data-gpm-enabled="{{ data.get('enabled') ? '1' : '2' }}" data-gpm-testing="{{ isTestingRelease ? '1' : '2' }}">
             <td class="gpm-name quadruple">
@@ -65,6 +65,8 @@
                 </div>
             </td>
         </tr>
+    {% else %}
+        <tr><td>{{ "PLUGIN_ADMIN.OFFLINE_WARNING"|tu }}</td></tr>
     {% endfor %}
 </table>
 

themes/grav/templates/partials/themes-list.html.twig

@@ -18,7 +18,7 @@
         {% if (installing) %}{% set state = 'installing' %}{% endif %}
         {% if (config.get('system.pages.theme') == slug) %}{% set state = 'active' %}{% endif %}
         {% set isTestingRelease = admin.gpm.isTestingRelease(slug) %}
-        {% set releaseDate = theme.date ?: admin.gpm.findPackage(slug).date %}
+        {% set releaseDate = theme.date ?: admin.gpm.findPackage(slug, true).date %}
 
         <div class="theme card-item pure-u-1-3 {{ state }}-theme" data-gpm-theme="{{ slug|url_encode }}" data-gpm-name="{{ theme.name }}" data-gpm-release-date="{{ releaseDate }}" data-gpm-author="{{ theme.author.name }}" data-gpm-official="{{ admin.isTeamGrav(theme) ? '1' : '2' }}" data-gpm-updatable="{{ admin.gpm.isUpdatable(slug) ? '1' : '2' }}" data-gpm-enabled="{{ data.get('enabled') ? '1' : '2' }}" data-gpm-testing="{{ isTestingRelease ? '1' : '2' }}">
             <div class="gpm-name">
@@ -56,6 +56,8 @@
                 </a>
             {% endif %}
         </div>
+    {% else %}
+        <tr><td>{{ "PLUGIN_ADMIN.OFFLINE_WARNING"|tu }}</td></tr>
     {% endfor %}
 </div>