Statistics for Form Subscriptions

- added statistics_forms table
- added corresponding model to record stats
- record stats whenever someone subscribes via a form

lib/Config/Initializer.php

@@ -86,6 +86,7 @@ class Initializer {
     $statistics_clicks = Env::$db_prefix . 'statistics_clicks';
     $statistics_opens = Env::$db_prefix . 'statistics_opens';
     $statistics_unsubscribes = Env::$db_prefix . 'statistics_unsubscribes';
+    $statistics_forms = Env::$db_prefix . 'statistics_forms';
 
     define('MP_SETTINGS_TABLE', $settings);
     define('MP_SEGMENTS_TABLE', $segments);
@@ -105,6 +106,7 @@ class Initializer {
     define('MP_STATISTICS_CLICKS_TABLE', $statistics_clicks);
     define('MP_STATISTICS_OPENS_TABLE', $statistics_opens);
     define('MP_STATISTICS_UNSUBSCRIBES_TABLE', $statistics_unsubscribes);
+    define('MP_STATISTICS_FORMS_TABLE', $statistics_forms);
   }
 
   function runMigrator() {

lib/Config/Migrator.php

@@ -27,7 +27,8 @@ class Migrator {
       'statistics_newsletters',
       'statistics_clicks',
       'statistics_opens',
-      'statistics_unsubscribes'
+      'statistics_unsubscribes',
+      'statistics_forms'
     );
   }
 
@@ -318,6 +319,19 @@ class Migrator {
     return $this->sqlify(__FUNCTION__, $attributes);
   }
 
+  function statistics_forms() {
+    $attributes = array(
+      'id mediumint(9) NOT NULL AUTO_INCREMENT,',
+      'form_id mediumint(9) NOT NULL,',
+      'count mediumint(9) NOT NULL DEFAULT 0,',
+      'date DATE NOT NULL,',
+      'created_at TIMESTAMP NOT NULL DEFAULT 0,',
+      'PRIMARY KEY  (id),',
+      'UNIQUE KEY form_date (form_id,date)'
+    );
+    return $this->sqlify(__FUNCTION__, $attributes);
+  }
+
   private function sqlify($model, $attributes) {
     $table = $this->prefix . $model;
 

lib/Models/StatisticsForms.php

@@ -0,0 +1,36 @@
+<?php
+namespace MailPoet\Models;
+
+if(!defined('ABSPATH')) exit;
+
+class StatisticsForms extends Model {
+  public static $_table = MP_STATISTICS_FORMS_TABLE;
+
+  function __construct() {
+    parent::__construct();
+  }
+
+  public static function record($form_id) {
+    if($form_id > 0) {
+      $today = date('Y-m-d');
+
+      // check if we already have a record for today
+      $record = self::where('form_id', $form_id)
+        ->where('date', $today)
+        ->findOne();
+
+      if($record !== false) {
+        $record->setExpr('count', 'count + 1')->save();
+      } else {
+        // create a new entry
+        $record = self::create();
+        $record->hydrate(array(
+          'form_id' => $form_id,
+          'date' => $today,
+          'count' => 1
+        ));
+        $record->save();
+      }
+    }
+  }
+}

lib/Router/Subscribers.php

@@ -8,6 +8,7 @@ use MailPoet\Models\SubscriberCustomField;
 use MailPoet\Models\Segment;
 use MailPoet\Models\Setting;
 use MailPoet\Models\Form;
+use MailPoet\Models\StatisticsForms;
 use MailPoet\Util\Url;
 
 if(!defined('ABSPATH')) exit;
@@ -92,6 +93,11 @@ class Subscribers {
     $errors = $subscriber->getErrors();
     $result = ($errors === false && $subscriber->id() > 0);
 
+    // record form statistics
+    if($result === true && $form !== false && $form->id > 0) {
+      StatisticsForms::record($form->id);
+    }
+
     // get success message to display after subscription
     $form_settings = (
       isset($form->settings)