RizkyAgung

app.js

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+const express = require('express');
+const bodyParser = require('body-parser')
+const Teachers = require('./routers/teachersRouter');
+const Subjects = require('./routers/subjectsRouter');
+const Students = require('./routers/studentsRouter');
+const app = express();
+
+app.set('view engine', 'ejs');
+app.set('views', './views');
+
+app.use(bodyParser.urlencoded({ extended: false }))
+app.use(bodyParser.json())
+
+app.use('/teachers', Teachers);
+app.use('/subjects', Subjects);
+app.use('/students', Students);
+
+
+app.get('/', (req, res) => {
+  res.render('home', {pageTitle:"Home"});
+})
+
+app.listen(3000, function() {
+  console.log("IT WORKS!!");
+});

config/config.json

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+{
+  "development": {
+    "username": "postgres",
+    "password": "postgres",
+    "database": "school-app",
+    "host": "127.0.0.1",
+    "dialect": "postgres"
+  }
+}

migrations/20171102071826-create-teacher.js

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+'use strict';
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.createTable('Teachers', {
+      id: {
+        allowNull: false,
+        autoIncrement: true,
+        primaryKey: true,
+        type: Sequelize.INTEGER
+      },
+      first_name: {
+        type: Sequelize.STRING
+      },
+      last_name: {
+        type: Sequelize.STRING
+      },
+      createdAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      },
+      updatedAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      }
+    });
+  },
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.dropTable('Teachers');
+  }
+};

migrations/20171102075024-add-email-Teacher.js

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+'use strict';
+
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.addColumn('Teachers','email',{type:Sequelize.STRING});
+  },
+
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.removeColumn('Teachers','email');
+  }
+};

migrations/20171102085948-create-subject.js

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+'use strict';
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.createTable('Subjects', {
+      id: {
+        allowNull: false,
+        autoIncrement: true,
+        primaryKey: true,
+        type: Sequelize.INTEGER
+      },
+      subject_name: {
+        type: Sequelize.STRING
+      },
+      createdAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      },
+      updatedAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      }
+    });
+  },
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.dropTable('Subjects');
+  }
+};

migrations/20171102141146-create-student.js

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+'use strict';
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.createTable('Students', {
+      id: {
+        allowNull: false,
+        autoIncrement: true,
+        primaryKey: true,
+        type: Sequelize.INTEGER
+      },
+      first_name: {
+        type: Sequelize.STRING
+      },
+      last_name: {
+        type: Sequelize.STRING
+      },
+      email: {
+        type: Sequelize.STRING
+      },
+      createdAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      },
+      updatedAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      }
+    });
+  },
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.dropTable('Students');
+  }
+};

migrations/20171104071349-add_column-subjectID-teachers.js

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+'use strict';
+
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.addColumn('Teachers','SubjectId',{type:Sequelize.INTEGER});
+  },
+
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.removeColumn('Teachers','SubjectId');;
+  }
+};

migrations/20171105033042-create-students-subjects.js

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+'use strict';
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.createTable('Students-Subjects', {
+      id: {
+        allowNull: false,
+        autoIncrement: true,
+        primaryKey: true,
+        type: Sequelize.INTEGER
+      },
+      StudentId: {
+        type: Sequelize.INTEGER
+      },
+      SubjectId: {
+        type: Sequelize.INTEGER
+      },
+      createdAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      },
+      updatedAt: {
+        allowNull: false,
+        type: Sequelize.DATE
+      }
+    });
+  },
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.dropTable('Students-Subjects');
+  }
+};

migrations/20171105125232-rename-students-subjects.js

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+'use strict';
+
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.renameTable('Students-Subjects', 'Students_Subjects');
+  },
+
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.renameTable('Students_Subjects', 'Students-Subjects');
+  }
+};

migrations/20171106044240-addColumn-score-Students_Subjects.js

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+'use strict';
+
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    return queryInterface.addColumn('Students_Subjects', 'score', {type : Sequelize.INTEGER})
+  },
+
+  down: (queryInterface, Sequelize) => {
+    return queryInterface.removeColumn('Students_Subjects', 'score')
+  }
+};

models/index.js

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+'use strict';
+
+var fs        = require('fs');
+var path      = require('path');
+var Sequelize = require('sequelize');
+var basename  = path.basename(__filename);
+var env       = process.env.NODE_ENV || 'development';
+var config    = require(__dirname + '/../config/config.json')[env];
+var db        = {};
+
+if (config.use_env_variable) {
+  var sequelize = new Sequelize(process.env[config.use_env_variable]);
+} else {
+  var sequelize = new Sequelize(config.database, config.username, config.password, config);
+}
+
+fs
+  .readdirSync(__dirname)
+  .filter(file => {
+    return (file.indexOf('.') !== 0) && (file !== basename) && (file.slice(-3) === '.js');
+  })
+  .forEach(file => {
+    var model = sequelize['import'](path.join(__dirname, file));
+    db[model.name] = model;
+  });
+
+Object.keys(db).forEach(modelName => {
+  if (db[modelName].associate) {
+    db[modelName].associate(db);
+  }
+});
+
+db.sequelize = sequelize;
+db.Sequelize = Sequelize;
+
+module.exports = db;

models/student.js

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+'use strict';
+module.exports = (sequelize, DataTypes) => {
+  var Student = sequelize.define('Student', {
+    first_name: DataTypes.STRING,
+    last_name: DataTypes.STRING,
+    email: {
+      type: DataTypes.STRING,
+      validate: {
+        isEmail: true
+      }
+    }
+  });
+  Student.prototype.getFullName = function () {
+    return `${this.first_name} ${this.last_name}`;
+  };
+  Student.associate = models => {
+    Student.belongsToMany(models.Subject, { through: 'Students_Subject' });
+    Student.hasMany(models.Students_Subject)
+  }
+  return Student;
+};

models/students-subjects.js

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+'use strict';
+module.exports = (sequelize, DataTypes) => {
+  var Students_Subject = sequelize.define('Students_Subject', {
+    id: {
+      primaryKey: true,
+      autoIncrement: true,
+      type: DataTypes.INTEGER
+    },
+    StudentId: DataTypes.INTEGER,
+    SubjectId: DataTypes.INTEGER,
+    score: DataTypes.INTEGER
+  });
+  Students_Subject.associate = models => {
+    Students_Subject.belongsTo(models.Student, {foreignKey : 'StudentId'})
+    Students_Subject.belongsTo(models.Subject, {foreignKey : 'SubjectId'})
+  }
+  Students_Subject.prototype.getId = function () {
+    return this.id
+  }
+  return Students_Subject;
+};

models/subject.js

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+'use strict';
+module.exports = (sequelize, DataTypes) => {
+  var Subject = sequelize.define('Subject', {
+    subject_name: DataTypes.STRING
+  });
+  Subject.associate = (models) => {
+    Subject.hasMany(models.Teacher);
+    Subject.belongsToMany(models.Student, { through: 'Students_Subject' })
+    Subject.hasMany(models.Students_Subject)
+  }
+  return Subject;
+};

models/teacher.js

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+'use strict';
+module.exports = (sequelize, DataTypes) => {
+  var Teacher = sequelize.define('Teacher', {
+    first_name: DataTypes.STRING,
+    last_name: DataTypes.STRING,
+    email: {
+      type: DataTypes.STRING,
+      validate: {
+        isEmail: true
+      }
+    }
+  });
+  Teacher.associate = (models) => {
+    Teacher.belongsTo(models.Subject);
+  };
+  return Teacher;
+};