Added force-rerender.js script

no issue

- requests `PUT /posts/:id/?force_rerender=true` for every post and page on the supplied url

Author: kevinansfield

force-rerender.js

@@ -0,0 +1,76 @@
+/**
+ * Re-renders all posts and pages
+ *
+ * Usage:
+ *
+ * node force-rerender.js https://blah.ghost.io ADMIN_API_KEY - dry run
+ * node force-rerender.js https://blah.ghost.io ADMIN_API_KEY true - live run
+ */
+
+if (process.argv.length < 4) {
+    console.log('not enough arguments, provide an API url and admin key');
+    process.exit(1);
+}
+
+const Promise = require('bluebird');
+const GhostAdminAPI = require('@tryghost/admin-api');
+
+const url = process.argv[2];
+const key = process.argv[3];
+
+(async function main() {
+    const doRerender = process.argv[4] === 'true';
+
+    if (doRerender) {
+        console.log('REAL Run');
+    } else {
+        console.log('Dry Run - nothing will be re-rendered');
+    }
+
+    // Give the user time to read...
+    await Promise.delay(1000);
+
+    const api = new GhostAdminAPI({
+        url,
+        key,
+        version: 'canary'
+    });
+
+    try {
+        const allPosts = await api.posts.browse({fields: 'id,slug,updated_at', limit: 'all'});
+        const allPages = await api.pages.browse({fields: 'id,slug,updated_at', limit: 'all'});
+
+        console.log(`${allPosts.length} Posts and ${allPages.length} Pages will be re-rendered`);
+
+        if (doRerender) {
+            const postsResult = await Promise.mapSeries(allPosts, async (post) => {
+                console.log(`Re-rendering post ${post.slug} (${post.id})`);
+
+                // missing data attributes won't be changed
+                // updated_at is required to pass collision detection
+                const postData = {id: post.id, updated_at: post.updated_at};
+                await api.posts.edit(postData, {force_rerender: true});
+
+                // return `true` rather than the api response to avoid putting all post contents into memory
+                return Promise.delay(50).return(true);
+            });
+
+            console.log(`\nRe-rendered ${postsResult.length} posts\n`);
+            await Promise.delay(1000);
+
+            const pagesResult = await Promise.mapSeries(allPages, async (page) => {
+                console.log(`Re-rendering page ${page.slug} (${page.id})`);
+
+                const pageData = {id: page.id, updated_at: page.updated_at};
+                await api.pages.edit(pageData, {force_rerender: true});
+
+                return Promise.delay(50).return(true);
+            });
+
+            console.log(`\nRe-rendered ${pagesResult.length} pages`);
+        }
+    } catch (err) {
+        console.error('There was an error', require('util').inspect(err, false, null));
+        process.exit(1);
+    }
+})();