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--- litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-from-login-user [2017/12/18 16:16]
Jackson Zhang
+++ litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-from-login-user [2017/12/18 19:37] (current)
Lisa Clarke
@@ Line 1: / Line 1: @@
-====== Can you Exclude the Price Block from public Cache for Only the Logged-in Users? ======
+====== Can you Exclude the Price Block from Public Cache for Only the Logged-in Users? ======
-You have a situation where pricing varies per user and is fetched via API from an external ERP system . This system only applies to logged-in users. Users who are logged out should not see pricing at all.
+You might have a situation where pricing varies per logged-in user and is fetched via API from an external ERP system. Under this system, logged-out users would see no pricing at all.
+What a non-logged-in user would see:
-For non-logged-in user:
 {{ :litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-loginrequired.png?600 |}}
-{{ :litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-loginrequired-header.png?600 |}}
+{{ :litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-loginrequired-header.png?400 |}}
-For the logged-in user:
+What a logged-in user would see:
 {{ :litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-logged-in.png?600 |}}
-{{ :litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-loginrequired-header.png?600 |}}
+{{ :litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-loginrequired-header.png?400 |}}
-but if you check the header, the logged-in page is still served from litemage public cache. You want to exclude the Price Block from public Cache for Only the Logged-in Users. How?
+Here's how it should work: When a user clicks ''login'', that customer's discounted prices would be fetched directly from an external API solution. We would set this up through two customer groups: group ID 1, which would be for logged-in users, and group ID 2, for everyone else. The API update would happen for everyone in group 1 and store 1, but not group 2.
-Caching pages with this kind of setup is tricky.
+Caching pages with this kind of setup is tricky. LiteMage is able to cache different prices per customer group, but not per individual customers. We cannot punch a hole for the price block, however, we can simply make the whole page either not cached, or privately cached. For this example, we would like to make customer group ID 1 (logged-in users) and store ID 1 to be privately cached.
-LiteMage is able to cache different prices per customer group, but not per individual customers.
+To enable private cache, you will need to add  ''CacheLookup private on'' in ''.htaccess'' after ''LiteMage on'', as follows:
+  <IfModule Litespeed>
+  LiteMage on
+  CacheLookup private on
+  </IfModule>
+Also you will need to modify LiteMage's ''app/code/community/Litespeed/Litemage/Helper/Esi.php''. In ''protected function _getDefaultEnvCookieValue()'', line 1160 - 1164 within ''if ($diffGrp = $this->_config->getConf(Litespeed_Litemage_Helper_Data::CFG_DIFFCUSTGRP))'' add the following:
+  /* customized code added by for case 1 */
+          if ($currCustomerGroup == 1 && $currStoreId == 1) {
+                    $this->_cacheVars['flag'] |= self::CHBM_PRIVATE;
+          }
+  /* end of customized code change */
+The final code looks like so:
+   protected function _getDefaultEnvCookieValue()
+    {
+    ...
+    ...
+                 if ($diffGrp = $this->_config->getConf(Litespeed_Litemage_Helper_Data::CFG_DIFFCUSTGRP)) {
+                        // diff cache copy per customer group
+                        $currCustomerGroup = Mage::getSingleton('customer/session')->getCustomerGroupId() ;
+                        if ( Mage_Customer_Model_Group::NOT_LOGGED_IN_ID != $currCustomerGroup ) {
+                                if ($diffGrp == 1) // diff copy per group
+                                        $default['cgrp'] = $currCustomerGroup ;
+                                elseif ($diffGrp == 2)    // diff copy for logged in user
+                                        $default['cgrp'] = 'in' ;
+                                elseif ($diffGrp == 3) {
+                                        $cgset = $this->_config->getConf(Litespeed_Litemage_Helper_Data::CFG_DIFFCUSTGRP_SET);
+                                        if (isset($cgset[$currCustomerGroup]))
+                                                $default['cgrp'] = $cgset[$currCustomerGroup];
+                                }
+                /* customized code added for case 1 */
+                                if ($currCustomerGroup == 1 && $currStoreId == 1) {
+                                        $this->_cacheVars['flag'] |= self::CHBM_PRIVATE;
+                                }
+                /* end of customized code change */
+                        }
+                }
+  ...
+  ...
+  }
+So for the logged-in user in customer group 1 and store 1, product pages will be served from private cache and private ESI blocks. All other users will be served from public cache with private ESI blocks.
+Update the LiteMage configuration:
+  Separate Cache Copy per Customer Group -> Yes
+After the above change, you should be able to see that the pages are being served from LiteMage private cache.
+{{ :litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-logged-in.png?600 |}}
+{{ :litespeed_wiki:cache:litemage:troubleshooting:exclude-price-block-logged-in-privatecache-header.png?600 |}}
-For logged-in users, you could make the price block into a private ESI block and configure it to be uncacheable, but you can't treat the block differently for logged-in and non-logged-in users. A custom solution would be required.