Add like/dislike system for videos

1 files changed, 77 insertions, 0 deletions

diff --git a/server/models/user-video-rate.js b/server/models/user-video-rate.js
new file mode 100644
index 000000000..84007d70c
--- /dev/null
+++ b/server/models/user-video-rate.js
@@ -0,0 +1,77 @@
+'use strict'
+
+/*
+  User rates per video.
+
+*/
+
+const values = require('lodash/values')
+
+const constants = require('../initializers/constants')
+
+// ---------------------------------------------------------------------------
+
+module.exports = function (sequelize, DataTypes) {
+  const UserVideoRate = sequelize.define('UserVideoRate',
+    {
+      type: {
+        type: DataTypes.ENUM(values(constants.VIDEO_RATE_TYPES)),
+        allowNull: false
+      }
+    },
+    {
+      indexes: [
+        {
+          fields: [ 'videoId', 'userId', 'type' ],
+          unique: true
+        }
+      ],
+      classMethods: {
+        associate,
+
+        load
+      }
+    }
+  )
+
+  return UserVideoRate
+}
+
+// ------------------------------ STATICS ------------------------------
+
+function associate (models) {
+  this.belongsTo(models.Video, {
+    foreignKey: {
+      name: 'videoId',
+      allowNull: false
+    },
+    onDelete: 'CASCADE'
+  })
+
+  this.belongsTo(models.User, {
+    foreignKey: {
+      name: 'userId',
+      allowNull: false
+    },
+    onDelete: 'CASCADE'
+  })
+}
+
+function load (userId, videoId, transaction, callback) {
+  if (!callback) {
+    callback = transaction
+    transaction = null
+  }
+
+  const query = {
+    where: {
+      userId,
+      videoId
+    }
+  }
+
+  const options = {}
+  if (transaction) options.transaction = transaction
+
+  return this.findOne(query, options).asCallback(callback)
+}