Not able to perform form submit

[thadaninilesh]

Hello,

I have been trying to develop a custom module in prestashop for the customers to add testimonials after getting their order delivered. Being a newbie in prestashop I'm stuck on a very silly issue of form submit.

I have a module in which there is a module file whose location is root/modules/Testimonialmodule/TestimonialModule.php

class TestimonialModule extends Module{

    public function __construct(){
        $this->name = 'testimonialmodule';
        $this->displayName = 'Testimonials Module';
        $this->tab = 'front_office_features';
        $this->version = '0.1';
        $this->author = 'Nilesh Thadani';
        $this->description = 'Using this module customer will be able to see testimonials on the home page and write reviews about their purchases from the My Account tab';
        $this->bootstrap = true;
        parent::__construct();
    }

    public function install(){
        parent::install();
        $this->registerHook('displayProductTabContent');
        $this->registerHook('displayHome');
        $this->registerHook('displayCustomerAccount');
        $this->registerHook('displayTestimonialForm');
        $this->registerHook('displayTestimonial');
    }


public function processTestimonialForm(){
        if(Tools::isSubmit('submit_testimonial')){
            $customer_id = $this->context->cookie->id_customer;
            $comment = Tools::getValue('comment');
            $rating = Tools::getValue('rating');
            $img_name = Tools::getValue('fileUpload');
            $order_id = Tools::getValue('order_id');
            $testimonial_allow = Tools::getValue('testimonial_allow');
            if(empty($comment) || empty($rating)){
                $this->errors[] = Tools::displayError('Message and rating must be filled while writing a review');
            }
            else {
                if (isset($_FILES['fileUpload']) && !empty($_FILES['fileUpload'])) {
                    $temp = explode(".", $_FILES['fileUpload']['name']);
                    $img_name = $order_id.'_'.$customer_id . '_' . round(microtime(true)) . '_testimonial.' . end($temp);
                    $move_result = move_uploaded_file($_FILES['fileUpload']['tmp_name'], _PS_IMG_DIR_ . 'testimonials/' . $img_name);
                    if(empty($move_result)){
                        $this->errors[] = Tools::displayError('We could not upload your photo, please try again');
                    }
                }
                $insert = array(
                    'order_id' => $order_id,
                    'customer_id' => (int)$customer_id,
                    'comment' => pSQL($comment),
                    'ratings' => (int)$rating,
                    'img_name' => pSQL($img_name),
                    'testimonial' => $testimonial_allow,
                    'date' => date('Y-m-d H:i:s')
                );
                print_r($insert);
                Db::getInstance()->insert('testimonials', $insert);
            }
        }
    }

    public function assignTestimonialForm(){
        $customer_id = $this->context->cookie->id_customer;
        $comments = Db::getInstance()->executeS('SELECT * FROM '._DB_PREFIX_.'testimonials WHERE customer_id='.(int)$customer_id);
        $this->context->smarty->assign('comments', $comments);
    }

    public function hookDisplayTestimonialForm($params){
        $this->processTestimonialForm();
        $this->assignConfiguration();
        $this->assignTestimonialForm();
        $this->context->smarty->assign('link',$this->context->link->getModuleLink('testimonialmodule'));
        return $this->display(__FILE__, 'displayTestimonialForm.tpl');
    }

Here is my .tpl file which is associated with my custom hook located at root/modules/TestimonialModule/views/templates/hook/displayTestimonialForm.tpl

<h3 class="page-product-heading">Product Comments</h3>
<div class="rte">
    <form action="" method="post" id="comment-form">
        {if $enable_order_select eq '1'}
            <input type="hidden" value="{$order->id}" name="order_id">
        {/if}
        {if $enable_ratings eq '1'}
        <div class="form-group">
            <label for="rating">Rating</label>
            <div class="row">
                <div class="col-xs-4">
                    <select name="rating" id="rating" class="form-control" required>
                        <option value="0">--Choose--</option>
                        <option value="1">1</option>
                        <option value="2">2</option>
                        <option value="3">3</option>
                        <option value="4">4</option>
                        <option value="5">5</option>
                    </select>
                </div>
            </div>
        </div>
        {/if}
        {if $enable_comments eq '1'}
        <div class="form-group">
            <label for="comment">Comments:</label>
            <textarea name="comment" id="comment" rows="3" class="form-control" required></textarea>
        </div>
        {/if}
        {if $enable_photo_upload eq '1'}
        <div class="form-group">
            <label for="fileUpload">Upload Image </label>
            <input type="file" name="fileUpload" id="fileUpload" />
        </div>
        {/if}
        {if $enable_testimonial eq '1'}
        <div class="form-group">
            <input type="checkbox" name="testimonial_allow" id="testimonial_allow" class="form-control" value="1">
            <label for="testimonial_allow">Allow this review to be uploaded as a testimonial</label>
        </div>
        {/if}
        {if $enable_testimonial eq '1' OR $enable_comments eq '1' OR $enable_photo_upload eq '1' OR $enable_ratings eq '1' OR $enable_order_select eq '1'}
            <button type="submit" class="btn btn-default button-medium" name="submit_testimonial" id="submit_testimonial">
                <span>Save <i class="icon-chevron-right right"></i></span>
            </button>
        {/if}
    </form>
</div>

The problem is when i try to submit the form, isSubmit function return false and hence the code does not get executed.

I have placed this hook on the bottom of the order-detail.tpl file located in the root of my theme's directory.

Any help on this will be highly appreciated.

Thank you.