QuestionController-addAnswer-before.js

/**
 * [Action] Add an answer to a question
 *
 * @param req {String} - Identifier of the question to add to
 * @param res {Object} - Data of the new answer
 */
function addAnswer(request, response) {
  var questionId = request.params.questionId;
  var newAnswer = request.body;

  async.auto({
    getQuestion: function(callback) {
      Question.findById(questionId)
        .populate('author')
        .exec(callback);
    },

    createAnswer: ['getQuestion', function(callback, results) {
      var answer = new Answers({
        question: questionId,
        description: newAnswer.description,
        fileId: newAnswer.fileId,
        author: newAnswer.authorId
      });
      
      answer.save(function(err, answer, count) {
        console.log('routes/answers - Save answer:', err, answer, count);
        cb(err, answer);
      });
    }],
    
    updateQuestion: function(callback) {
        question.lastActivity = new Date();
        question.save(callback);
    },

    getAuthorsOtherAnswers: function(callback) {
      // Find authors of others answers (called followers)
    },

    sendEmailsToFollowers: ['getQuestion', 'createAnswer', 'getAuthorsOtherAnswers', function(cb, results) {
      // Send emails to authors of others answers of the question
    }]
  }, function(error, results) {
    if (error) {
      console.error('Something went wrong', error);
      return response.status(400).send('An error occured');
    }
    
    response.json(results.createAnswer);
  });
}