diff --git a/core/frontend/meta/author_url.js b/core/frontend/meta/author_url.js
index 6e1cb11501..0b368e04b4 100644
--- a/core/frontend/meta/author_url.js
+++ b/core/frontend/meta/author_url.js
@@ -1,16 +1,17 @@
 const urlService = require('../services/url');
+const getContextObject = require('./context_object.js');
 
 function getAuthorUrl(data, absolute) {
     let context = data.context ? data.context[0] : null;
 
-    context = context === 'amp' ? 'post' : context;
+    const contextObject = getContextObject(data, context);
 
     if (data.author) {
         return urlService.getUrlByResourceId(data.author.id, {absolute: absolute, secure: data.author.secure, withSubdirectory: true});
     }
 
-    if (data[context] && data[context].primary_author) {
-        return urlService.getUrlByResourceId(data[context].primary_author.id, {absolute: absolute, secure: data[context].secure, withSubdirectory: true});
+    if (contextObject && contextObject.primary_author) {
+        return urlService.getUrlByResourceId(contextObject.primary_author.id, {absolute: absolute, secure: contextObject.secure, withSubdirectory: true});
     }
 
     return null;
diff --git a/core/frontend/meta/modified_date.js b/core/frontend/meta/modified_date.js
index 93432b1b4b..f6fe15e84d 100644
--- a/core/frontend/meta/modified_date.js
+++ b/core/frontend/meta/modified_date.js
@@ -1,13 +1,13 @@
-const _ = require('lodash');
+const getContextObject = require('./context_object.js');
 
 function getModifiedDate(data) {
     let context = data.context ? data.context : null;
     let modDate;
 
-    context = _.includes(context, 'amp') ? 'post' : context;
+    const contextObject = getContextObject(data, context);
 
-    if (data[context]) {
-        modDate = data[context].updated_at || null;
+    if (contextObject) {
+        modDate = contextObject.updated_at || null;
         if (modDate) {
             return new Date(modDate).toISOString();
         }
diff --git a/core/frontend/meta/published_date.js b/core/frontend/meta/published_date.js
index 044e2ef418..63a5ad02d1 100644
--- a/core/frontend/meta/published_date.js
+++ b/core/frontend/meta/published_date.js
@@ -1,10 +1,12 @@
+const getContextObject = require('./context_object.js');
+
 function getPublishedDate(data) {
     let context = data.context ? data.context[0] : null;
 
-    context = context === 'amp' ? 'post' : context;
+    const contextObject = getContextObject(data, context);
 
-    if (data[context] && data[context].published_at) {
-        return new Date(data[context].published_at).toISOString();
+    if (contextObject && contextObject.published_at) {
+        return new Date(contextObject.published_at).toISOString();
     }
     return null;
 }