implement registration in backend

console/migrations/m181227_210620_alter_table_event_registration_cancaled_at_allow_null.php

@@ -0,0 +1,30 @@
+<?php
+
+use yii\db\Schema;
+use yii\db\Migration;
+
+class m181227_210620_alter_table_event_registration_cancaled_at_allow_null extends Migration
+{
+    public function up()
+    {
+        $this->execute("alter table event_registration modify canceled_at datetime null;");
+    }
+
+    public function down()
+    {
+        echo "m181227_210620_alter_table_event_registration_cancaled_at_allow_null cannot be reverted.\n";
+
+        return false;
+    }
+
+    /*
+    // Use safeUp/safeDown to run migration code within a transaction
+    public function safeUp()
+    {
+    }
+
+    public function safeDown()
+    {
+    }
+    */
+}

console/migrations/m181227_215706_fix_trigger_event_seat_count_check.php

@@ -0,0 +1,43 @@
+<?php
+
+use yii\db\Schema;
+use yii\db\Migration;
+
+class m181227_215706_fix_trigger_event_seat_count_check extends Migration
+{
+    public function up()
+    {
+        $this->execute("DROP TRIGGER IF EXISTS event_seat_count_check;");
+        $this->execute("CREATE TRIGGER event_seat_count_check
+                 AFTER INSERT ON event_registration FOR EACH ROW
+                 BEGIN
+                      IF (SELECT coalesce(COUNT(id),0) FROM event_registration
+                           WHERE canceled_at is null AND id_event = NEW.id_event) 
+                           >
+                           (SELECT coalesce(seat_count,0) from event where id = NEW.id_event)
+                      THEN
+                           SIGNAL SQLSTATE '45000'
+                                SET MESSAGE_TEXT = 'MAX_SEAT_COUNT_EXCEEDED';
+                      END IF;
+                 END;
+        ");
+    }
+
+    public function down()
+    {
+        echo "m181227_215706_fix_trigger_event_seat_count_check cannot be reverted.\n";
+
+        return false;
+    }
+
+    /*
+    // Use safeUp/safeDown to run migration code within a transaction
+    public function safeUp()
+    {
+    }
+
+    public function safeDown()
+    {
+    }
+    */
+}

console/migrations/m181229_121344_alter_table_ticket_add_seat_count.php

@@ -0,0 +1,31 @@
+<?php
+
+use yii\db\Schema;
+use yii\db\Migration;
+
+class m181229_121344_alter_table_ticket_add_seat_count extends Migration
+{
+    public function up()
+    {
+        $this->addColumn("ticket","reservation_count","int default 0");
+        $this->addColumn("ticket","max_reservation_count","int default 0");
+    }
+
+    public function down()
+    {
+        echo "m181229_121344_alter_table_ticket_add_seat_count cannot be reverted.\n";
+
+        return false;
+    }
+
+    /*
+    // Use safeUp/safeDown to run migration code within a transaction
+    public function safeUp()
+    {
+    }
+
+    public function safeDown()
+    {
+    }
+    */
+}

console/migrations/m181230_100000_alter_table_ticket_type_add_reservation_count.php

@@ -0,0 +1,30 @@
+<?php
+
+use yii\db\Schema;
+use yii\db\Migration;
+
+class m181230_100000_alter_table_ticket_type_add_reservation_count extends Migration
+{
+    public function up()
+    {
+        $this->addColumn("ticket_type","max_reservation_count","int default 0");
+    }
+
+    public function down()
+    {
+        echo "m181230_100000_alter_table_ticket_type_add_reservation_count cannot be reverted.\n";
+
+        return false;
+    }
+
+    /*
+    // Use safeUp/safeDown to run migration code within a transaction
+    public function safeUp()
+    {
+    }
+
+    public function safeDown()
+    {
+    }
+    */
+}