Merge pull request #21 from imdhruvgupta/TagsMechanism

[FEATURE] introduced tags

Author: abhishek97

.DS_Store

@@ -12,12 +12,19 @@ module.exports = function (included = [], type, config) {
             id: relationship.id
           }
         }
+      },
+      tags: { 
+        valueForRelationship (relationship) {
+          return {
+            id: relationship.id
+          }
+        }
       }
     }
   }
-
+ 
   const options = {
-    attributes: ['title', 'description', 'difficulty' ,'user', 'choices', 'createdBy'],
+    attributes: ['title', 'description', 'difficulty' ,'user', 'choices', 'tags','createdBy'],
     meta: {
       pagination: function (record) {
         return record.pagination
@@ -33,6 +40,11 @@ module.exports = function (included = [], type, config) {
       attributes: ['title', 'description', 'positiveWeight' ,'negativeWeight', 'question'],
       included: included.includes('choices')
     },
+    tags: {
+      ref: 'id',
+      attributes: ['title'],
+      included: included.includes('tags')
+    },
     ...config
   }
 

framework/serializers/questions.js

@@ -0,0 +1,43 @@
+/**
+ * Created by imdhruvgupta on 11/7/19.
+ */
+
+module.exports = function(included = [], type,config) {
+    if(typeof type === Object) {
+        config = type
+    }
+    
+    if (type === 'deserialize') {
+        return {
+            keyForAttribute: 'camelCase',
+             users: {
+                valueForRelationship (relationship) {
+                    return relationship.id
+                }
+            },
+            questions: {
+                valueForRelationship (relationship) {
+                    return relationship.id
+                }
+            }
+        }
+    }
+    
+    const options = {
+        attributes: ['title', 'user', 'questions', 'userId'],
+        user: {
+            ref: 'id',
+            attributes: ['firstname', 'lastname', 'email', 'role'],
+            included: included.includes('user')
+        },
+        questions: {
+            ref: 'id',
+            ...require('./questions')([], 'serialize'),
+            included: included.includes('questions')
+        },
+
+        ...config
+    }
+    
+    return options
+}

framework/serializers/tags.js

@@ -0,0 +1,76 @@
+'use strict';
+
+module.exports = {
+  async up (queryInterface, Sequelize) {
+    await queryInterface.createTable('tags', {
+      id: {
+        type: Sequelize.INTEGER,
+        primaryKey: true,
+        autoIncrement: true
+      },
+      title: {
+        type: Sequelize.STRING,
+        allowNull: false
+      },
+      userId: {
+        type: Sequelize.INTEGER,
+        reference: {
+          model: 'users',
+          key: 'id'
+        }
+      },
+      createdAt: {
+        type: Sequelize.DATE
+      },
+      updatedAt: {
+        type: Sequelize.DATE
+      },
+      deletedAt: {
+        type: Sequelize.DATE
+      }
+    });
+
+    await queryInterface.createTable('questionsTags', {
+      id: {
+        type: Sequelize.INTEGER,
+        primaryKey: true,
+        autoIncrement: true
+      },
+      tagId: {
+        type: Sequelize.INTEGER,
+        reference: {
+          model: 'tags',
+          key: 'id'
+        },
+        allowNull: false
+      },
+      questionId: {
+        type: Sequelize.INTEGER,
+        reference: {
+          model: 'questions',
+          key: 'id'
+        },
+        allowNull: false
+      },
+      createdAt: {
+        type: Sequelize.DATE
+      },
+      updatedAt: {
+        type: Sequelize.DATE
+      },
+      deletedAt: {
+        type: Sequelize.DATE
+      }
+    });
+  },
+  
+  down: (queryInterface, Sequelize) => {
+    /*
+    Add reverting commands here.
+    Return a promise to correctly handle asynchronicity.
+    
+    Example:
+    return queryInterface.dropTable('users');
+    */ 
+  }
+};

migrations/20180725125530-createQuiz.js

@@ -0,0 +1,21 @@
+'use strict';
+
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    await queryInterface.addIndex('questionsTags', {
+      fields: ['questionId', 'tagId'],
+      name: 'questionsTags_questionId_tagId_partial',
+      unique: 'id',
+      where: {
+        deletedAt: null
+      }
+      
+    });
+    
+    await queryInterface.removeConstraint('questionsTags', 'questionsTags_questionId_tagId_key').catch(() => {})
+    
+  },
+  
+  down: (queryInterface, Sequelize) => {
+  }
+};

migrations/20190704180112-tagsMechanism.js

@@ -27,8 +27,7 @@ module.exports = (sequelize, DataTypes) => {
     questions.hasMany(models.choices)
     questions.belongsTo(models.users,{foreignKey: 'updatedById'})
     questions.belongsToMany(models.quizzes, {through: models.quizQuestions})
-
-
+    questions.belongsToMany(models.tags, {through: models.questionsTags})
   };
   return questions;
 };

migrations/20190711172635-addPartialIndexToQuestionsTags.js

@@ -0,0 +1,18 @@
+'use strict'
+module.exports = (sequelize, DataTypes) => {
+    var questionsTags = sequelize.define('questionsTags', {
+        id: {
+            type: DataTypes.INTEGER,
+            primaryKey: true,
+            autoIncrement: true
+        }
+    }, {
+        paranoid: true
+    })
+
+    questionsTags.associate = function(model) {
+        // Associations can be defined
+    }
+
+    return questionsTags;
+}

models/questions.js

@@ -0,0 +1,18 @@
+'use strict'
+module.exports = (sequelize, DataTypes) => {
+    var tags = sequelize.define('tags', {
+        title: {
+            type: DataTypes.STRING,
+            allowNull: false
+        }
+    }, {
+        paranoid: true
+    });
+
+    tags.associate = function(models) {
+        tags.belongsTo(models.users),
+        tags.belongsToMany(models.questions, {through: models.questionsTags})
+    }
+
+    return tags;
+}

models/questionsTags.js

@@ -7,7 +7,7 @@
     "sq": "./node_modules/.bin/sequelize"
   },
   "dependencies": {
-    "@coding-blocks/express-jsonapi-controller": "^1.0.0",
+    "@coding-blocks/express-jsonapi-controller": "^1.0.4",
     "body-parser": "^1.18.3",
     "connect-ensure-login": "^0.1.1",
     "cookie-parser": "^1.4.3",

models/tags.js

@@ -2,12 +2,13 @@ const questions = require('./questions')
 const choices = require('./choices')
 const users = require('./users')
 const quiz = require('./quiz')
+const tags = require('./tags')
 const Router = require('express').Router()
 
 Router.use('/questions', questions)
 Router.use('/choices', choices)
 Router.use('/users', users)
 Router.use('/quizzes', quiz)
-
+Router.use('/tags', tags)
 
 module.exports = Router