google_forms/application/models/Response_model.php

<?php
class Response_model extends CI_Model
{
    public function __construct() {
        $this->load->database();
    }

    // Get the total number of responses
    public function get_total_responses($user_id) {
        // Join the responses table with the forms table
        $this->db->select('responses.id');
        $this->db->from('responses');
        $this->db->join('forms', 'responses.form_id = forms.id');
        // Filter by user_id in the forms table
        $this->db->where('forms.user_id', $user_id);
        return $this->db->count_all_results();
    }
    
    public function insert_response($data)
    {
        $this->db->insert('responses', $data);
        return $this->db->insert_id();
    }

    public function insert_response_answer($data)
    {
        $this->db->insert('response_answers', $data);
    }

    public function get_form($form_id)
    {
        $this->db->where('id', $form_id);
        $query = $this->db->get('forms');
        return $query->row();
    }




    public function get_questions($form_id)
    {
        $this->db->where('form_id', $form_id);
        $query = $this->db->get('questions');
        return $query->result();
    }

    public function get_options($question_id)
    {
        $this->db->where('question_id', $question_id);
        $query = $this->db->get('options');
        return $query->result();
    }

    public function get_responses_by_form($form_id)
    {
        $this->db->select('responses.id as response_id, responses.submitted_at, users.username');
        $this->db->from('responses');
        $this->db->join('users', 'responses.user_id = users.id');
        $this->db->where('responses.form_id', $form_id);
        $query = $this->db->get();
        $responses = $query->result();

        foreach ($responses as &$response) {
            $response->answers = $this->get_answers_by_response_id($response->response_id);
        }

        return $responses;
    }

    public function get_answers_by_response_id($response_id)
    {
        $this->db->select('response_answers.question_id, response_answers.answered_text');
        $this->db->from('response_answers');
        $this->db->where('response_answers.response_id', $response_id);
        $query = $this->db->get();
        return $query->result();
    }

    public function get_responses($form_id)
    {
        $this->db->where('form_id', $form_id);
        $query = $this->db->get('responses');
        return $query->result();
    }


    // Method to get response details
    public function get_response($response_id)
    {
        $this->db->select('responses.*, users.email');
        $this->db->from('responses');
        $this->db->join('users', 'responses.user_id = users.id'); // Assuming 'user_id' is the foreign key in 'responses'
        $this->db->where('responses.id', $response_id);
        $query = $this->db->get();
        return $query->row();
    }


    // Method to get questions and answers for a response
    public function get_questions_and_answers($response_id)
    {
        $this->db->select('questions.id AS question_id, questions.text AS question_text, response_answers.answered_text, users.email');
        $this->db->from('questions');
        $this->db->join('response_answers', 'questions.id = response_answers.question_id');
        $this->db->join('responses', 'response_answers.response_id = responses.id');
        $this->db->join('users', 'responses.user_id = users.id'); // Join to get the user's email
        $this->db->where('response_answers.response_id', $response_id);
        $query = $this->db->get();
        return $query->result();
    }


    public function get_form_by_response($response_id)
    {
        $this->db->select('forms.title, forms.description');
        $this->db->from('forms');
        $this->db->join('responses', 'forms.id = responses.form_id');
        $this->db->where('responses.id', $response_id);
        $query = $this->db->get();
        return $query->row();
    }


    // Function to get summary data for a form
    public function get_summary_data($form_id)
    {
        $this->load->database();

        $summary_data = array();

        // Get questions for the form
        $this->db->select('id,text,type');
        $this->db->where('form_id', $form_id);
        $questions = $this->db->get('questions')->result_array();

        // Get responses count
        $this->db->where('form_id', $form_id);
        $responses = $this->db->get('responses')->result_array();
        
        if (count($responses) > 0) {
            $response_ids = array_column($responses, 'id');
            
            // Get response answers
            $this->db->where_in('response_id', $response_ids);
            $response_answers = $this->db->get('response_answers')->result_array();

            // Process response answers
            foreach ($questions as $question) {
                $question_id = $question['id'];
                $summary_data[$question_id] = [
                    'text' => $question['text'],
                    'type' => $question['type'],
                    'answers' => []
                ];
            }

            foreach ($response_answers as $answer) {
                $question_id = $answer['question_id'];
                $answered_text = $answer['answered_text'];

                if (!isset($summary_data[$question_id]['answers'][$answered_text])) {
                    $summary_data[$question_id]['answers'][$answered_text] = 1;
                } else {
                    $summary_data[$question_id]['answers'][$answered_text]++;
                }
            }
        }

        return $summary_data;
    }
}