[CodeIgniter] conversion de monnaie changeable

Bonjour. Application pour une pharmacie.
J’explique : dans mon pays (Congo - Kinshasa), le prix des fournisseurs est en dollars américains. Mais nos prix de vente sont en franc congolais (CDF).
Le taux varie et change tous les jours. Ce qui affecte quotidiennement notre prix de vente. Il me faut chaque matin mettre le prix de vente à jour.
Ce dont j’ai besoin c’est la possibilité de mettre à jour mon taux en fonction des prix en dollars des fournisseurs.

1. Sur mon tableau de bord, j’aimerai à avoir une case de taux du jour changeable manuellement. Une fois le taux du jour inséré que cela mette automatiquement à jour le prix sur tous les produits

<?php
    $CI =& get_instance();
    $CI->load->model('Web_settings');
    $CI->load->model('Reports');
    $CI->load->model('Users');
    $Web_settings = $CI->Web_settings->retrieve_setting_editdata();
    $users = $CI->Users->profile_edit_data();
    $out_of_stock = $CI->Reports->out_of_stock_count();
?>
<!-- Admin header end -->
<header class="main-header"> 
    <a href="<?php echo base_url()?>" class="logo"> <!-- Logo -->
        <span class="logo-mini">
            <!--<b>A</b>BD-->
            <img src="<?php if (isset($Web_settings[0]['favicon'])) {
               echo $Web_settings[0]['favicon']; }?>" alt="">
        </span>
        <span class="logo-lg">
            <!--<b>Admin</b>BD-->
            <img src="<?php if (isset($Web_settings[0]['logo'])) {
               echo $Web_settings[0]['logo']; }?>" alt="">
        </span>
    </a>
    <!-- Header Navbar -->
    <nav class="navbar navbar-static-top">
        <a href="#" rel="nofollow noopener noreferrer" target="_blank" class="sidebar-toggle" data-toggle="offcanvas" role="button"> <!-- Sidebar toggle button-->
            <span class="sr-only">Toggle navigation</span>
            <span class="pe-7s-keypad"></span>
        </a>
        <div class="navbar-custom-menu">
            <ul class="nav navbar-nav">
                  <li class="dropdown notifications-menu">
                    <a href="<?php echo base_url('Creport/out_of_stock')?>" >
                        <i class="pe-7s-attention" title="<?php echo display('out_of_stock')?>"></i>
                        <span class="label label-danger"><?php echo $out_of_stock?></span>
                    </a>
                </li>
                <!-- settings -->
                <li class="dropdown dropdown-user">
                    <a href="#" rel="nofollow noopener noreferrer" target="_blank" class="dropdown-toggle" data-toggle="dropdown"> <i class="pe-7s-settings"></i></a>
                    <ul class="dropdown-menu">
                        <li><a href="<?php echo base_url('Admin_dashboard/edit_profile')?>"><i class="pe-7s-users"></i><?php echo display('user_profile') ?></a></li>
                        <li><a href="<?php echo base_url('Admin_dashboard/change_password_form')?>"><i class="pe-7s-settings"></i><?php echo display('change_password') ?></a></li>
                        <li><a href="<?php echo base_url('Admin_dashboard/logout')?>"><i class="pe-7s-key"></i><?php echo display('logout') ?></a></li>
                    </ul>
                </li>
            </ul>
        </div>
    </nav>
</header>

<aside class="main-sidebar">
	<!-- sidebar -->
	<div class="sidebar">
	    <!-- Sidebar user panel -->
	    <div class="user-panel text-center">
	        <div class="image">
	            <img src="<?php echo $users[0]['logo']?>" class="img-circle" alt="User Image">
	        </div>
	        <div class="info">
	            <p><?php echo $this->session->userdata('user_name')?></p>
	            <a href="#" rel="nofollow noopener noreferrer" target="_blank"><i class="fa fa-circle text-success"></i> <?php echo display('online') ?></a>
	        </div>
	    </div>
	    <!-- sidebar menu -->
	    <ul class="sidebar-menu">

	        <li class="<?php if ($this->uri->segment('1') == ("")) { echo "active";}else{ echo " ";}?>">
	            <a href="<?php echo base_url()?>"><i class="ti-dashboard"></i> <span><?php echo display('dashboard') ?></span>
	                <span class="pull-right-container">
	                    <span class="label label-success pull-right"></span>
	                </span>
	            </a>
	        </li>

            <!-- Invoice menu start -->
            <li class="treeview <?php if ($this->uri->segment('1') == ("Cinvoice")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-layout-accordion-list"></i><span><?php echo display('invoice') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Cinvoice')?>"><?php echo display('new_invoice') ?></a></li>
                    <li><a href="<?php echo base_url('Cinvoice/manage_invoice')?>"><?php echo display('manage_invoice') ?></a></li>
                    <li><a href="<?php echo base_url('Cinvoice/pos_invoice')?>"><?php echo display('pos_invoice') ?></a></li>
                </ul>
            </li>
            <!-- Invoice menu end -->

            <!-- Product menu start -->
            <li class="treeview <?php if ($this->uri->segment('1') == ("Cproduct") || $this->uri->segment('1') == ("Cqrcode") || $this->uri->segment('1') == ("Cbarcode")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-bag"></i><span><?php echo display('product') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Cproduct')?>"><?php echo display('add_product') ?></a></li>
                    <li><a href="<?php echo base_url('Cproduct/add_product_csv')?>"><?php echo display('import_product_csv') ?></a></li>
                    <li><a href="<?php echo base_url('Cproduct/manage_product')?>"><?php echo display('manage_product') ?></a></li>
                    <?php 
                    if ($this->uri->segment(2) == "product_details") {
                    ?>
                    <li><a href="<?php echo base_url($product_statement)?>"><?php echo display('product_statement') ?></a></li>
                    <?php
                    }?>
                </ul>
            </li>
            <!-- Product menu end -->

            <!-- Customer menu start -->
            <li class="treeview <?php if ($this->uri->segment('1') == ("Ccustomer")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="fa fa-handshake-o"></i><span><?php echo display('customer') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Ccustomer')?>"><?php echo display('add_customer') ?></a></li>
                    <li><a href="<?php echo base_url('Ccustomer/manage_customer')?>"><?php echo display('manage_customer') ?></a></li>
                    <li><a href="<?php echo base_url('Ccustomer/credit_customer')?>"><?php echo display('credit_customer') ?></a></li>
                    <li><a href="<?php echo base_url('Ccustomer/paid_customer')?>"><?php echo display('paid_customer') ?></a></li>
                </ul>
            </li>
            <!-- Customer menu end -->

            <!-- Category menu start -->
            <li class="treeview <?php if ($this->uri->segment('1') == ("Ccategory")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-tag"></i><span><?php echo display('category') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Ccategory')?>"><?php echo display('add_category') ?></a></li>
                    <li><a href="<?php echo base_url('Ccategory/manage_category')?>"><?php echo display('manage_category') ?></a></li>
                </ul>
            </li>
            <!-- Category menu end -->

	        <!-- Supplier menu start -->
	        <li class="treeview <?php if ($this->uri->segment('1') == ("Csupplier")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-user"></i><span><?php echo display('supplier') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Csupplier')?>"><?php echo display('add_supplier') ?></a></li>
                    <li><a href="<?php echo base_url('Csupplier/manage_supplier')?>"><?php echo display('manage_supplier') ?></a></li>
                    <?php 
                    if (isset($supplier_ledger)) {
                    ?>
                    <li><a href="<?php echo base_url($supplier_ledger)?>"><?php echo display('supplier_ledger') ?></a></li>
                    <li><a href="<?php echo base_url($supplier_sales_details)?>"><?php echo display('supplier_sales_details') ?></a></li>
                    <li><a href="<?php echo base_url($supplier_sales_summary)?>"><?php echo display('supplier_sales_summary') ?></a></li>
                    <li><a href="<?php echo base_url($sales_payment_actual)?>"><?php echo display('supplier_payment_actual') ?></a></li>
                    <?php
                    }?>
                </ul>
            </li>
            <!-- Supplier menu end -->

            <!-- Purchase menu start -->
	        <li class="treeview <?php if ($this->uri->segment('1') == ("Cpurchase")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-shopping-cart"></i><span><?php echo display('purchase') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Cpurchase')?>"><?php echo display('add_purchase') ?></a></li>
                    <li><a href="<?php echo base_url('Cpurchase/manage_purchase')?>"><?php echo display('manage_purchase') ?></a></li>
                </ul>
            </li>
            <!-- Purchase menu end -->

            <!-- Stock menu start -->
            <li class="treeview <?php if ($this->uri->segment('1') == ("Creport")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-bar-chart"></i><span><?php echo display('stock') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Creport')?>"><?php echo display('stock_report') ?></a></li>
                    <li><a href="<?php echo base_url('Creport/stock_report_supplier_wise')?>"><?php echo display('stock_report_supplier_wise') ?></a></li>
                    <li><a href="<?php echo base_url('Creport/stock_report_product_wise')?>"><?php echo display('stock_report_product_wise') ?></a></li>

                </ul>
            </li>
            <!-- Stock menu end -->

            
            <!-- Search menu start -->
            <li class="treeview <?php if ($this->uri->segment('1') == ("Csearch")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-search"></i><span><?php echo display('search') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Csearch/medicine')?>"><?php echo display('medicine') ?></a></li>
                    <li><a href="<?php echo base_url('Csearch/customer')?>"><?php echo display('customer') ?> </a></li>
                    <li><a href="<?php echo base_url('Csearch/invoice')?>"><?php echo display('invoice') ?> </a></li>
                    <li><a href="<?php echo base_url('Csearch/purchase')?>"><?php echo display('purchase') ?> </a></li>
                </ul>
            </li>
            <!-- Search menu end -->

            <?php
                if ($this->session->userdata('user_type') == '1') {
            ?>

            <!-- Accounts menu start -->
            <li class="treeview <?php if ($this->uri->segment('1') == ("Caccounts") || $this->uri->segment('2') == ("table_create") || $this->uri->segment('2') == ("table_list") || $this->uri->segment('2') == ("table_edit")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-pencil-alt"></i><span><?php echo display('accounts') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Csettings/table_create/')?>"><?php echo display('create_accounts') ?> </a></li>
                    <li><a href="<?php echo base_url('Csettings/table_list/')?>"><?php echo display('manage_accounts') ?> </a></li>
                    <li><a href="<?php echo base_url('Caccounts')?>"><?php echo display('income') ?></a></li>
                    <li><a href="<?php echo base_url('Caccounts/outflow/')?>"><?php echo display('expense') ?></a></li>
                    <li><a href="<?php echo base_url('Caccounts/add_tax/')?>"><?php echo display('add_tax') ?></a></li>
                    <li><a href="<?php echo base_url('Caccounts/manage_tax/')?>"><?php echo display('manage_tax') ?></a></li>
                    <li><a href="<?php echo base_url('Caccounts/summary/')?>"><?php echo display('accounts_summary') ?></a></li>
                    <li><a href="<?php echo base_url('Caccounts/cheque_manager/')?>"><?php echo display('cheque_manager') ?></a></li>
                    <li><a href="<?php echo base_url('Caccounts/closing/')?>"><?php echo display('closing') ?></a></li>
                    <li><a href="<?php echo base_url('Caccounts/closing_report/')?>"><?php echo display('closing_report') ?></a></li>
                </ul>
            </li>
            <!-- Accounts menu end -->

            <!-- Report menu start -->
            <li class="treeview <?php if ($this->uri->segment('2') == ("all_report") || $this->uri->segment('2') == ("todays_sales_report") || $this->uri->segment('2') == ("todays_purchase_report") || $this->uri->segment('2') == ("product_sales_reports_date_wise") || $this->uri->segment('2') == ("total_profit_report") ) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-book"></i><span><?php echo display('report') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Admin_dashboard/all_report')?>"><?php echo display('todays_report') ?></a></li>
                    <li><a href="<?php echo base_url('Admin_dashboard/todays_sales_report')?>"><?php echo display('sales_report') ?></a></li>
                    <li><a href="<?php echo base_url('Admin_dashboard/todays_purchase_report')?>"><?php echo display('purchase_report') ?></a></li>
                    <li><a href="<?php echo base_url('Admin_dashboard/product_sales_reports_date_wise')?>"><?php echo display('sales_report_product_wise') ?></a></li>
                    <li><a href="<?php echo base_url('Admin_dashboard/total_profit_report')?>"><?php echo display('profit_report') ?></a></li>
                </ul>
            </li>
            <!-- Report menu end -->

            <!-- Bank menu start -->
            <li class="treeview <?php if ($this->uri->segment('2') == ("index") || $this->uri->segment('2') == ("bank_list")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-briefcase"></i><span><?php echo display('settings') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Csettings/index')?>"><?php echo display('add_new_bank') ?></a></li>
                    <li><a href="<?php echo base_url('Csettings/bank_list/')?>"><?php echo display('manage_bank') ?></a></li>
                </ul>
            </li>
            <!-- Bank menu end -->

            <!-- Synchronizer setting start -->
            <li class="treeview <?php if ($this->uri->segment('2') == ("form") || $this->uri->segment('2') == ("synchronize") || $this->uri->segment('1') == ("Backup_restore")) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-reload"></i><span><?php echo display('data_synchronizer') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <?php 
                        $localhost=false;
                        if (in_array($_SERVER['REMOTE_ADDR'], array('127.0.0.1', '::1', 'localhost'))) {
                    ?>
                    <li><a href="<?php echo base_url('data_synchronizer/form')?>"><?php echo display('setting') ?></a></li>
                    <?php
                        } 
                    ?>
                    <li><a href="<?php echo base_url('data_synchronizer/synchronize/')?>"><?php echo display('synchronize') ?></a></li>
                    <li><a href="<?php echo base_url('Backup_restore/')?>"><?php echo display('backup_restore') ?></a></li>
                </ul>
            </li>
            <!-- Synchronizer setting end -->

            <!-- Software Settings menu start -->
            <li class="treeview <?php if ($this->uri->segment('1') == ("Company_setup") || $this->uri->segment('1') == ("User") || $this->uri->segment('1') == ("Cweb_setting") || $this->uri->segment('1') == ("Language") ) { echo "active";}else{ echo " ";}?>">
                <a href="#" rel="nofollow noopener noreferrer" target="_blank">
                    <i class="ti-settings"></i><span><?php echo display('web_settings') ?></span>
                    <span class="pull-right-container">
                        <i class="fa fa-angle-left pull-right"></i>
                    </span>
                </a>
                <ul class="treeview-menu">
                    <li><a href="<?php echo base_url('Company_setup/manage_company')?>"><?php echo display('manage_company') ?></a></li>
                    <li><a href="<?php echo base_url('User')?>"><?php echo display('add_user') ?></a></li>
                    <li><a href="<?php echo base_url('User/manage_user')?>"><?php echo display('manage_users') ?> </a></li>
                    <li><a href="<?php echo base_url('Language')?>"><?php echo display('language') ?> </a></li>
                    <li><a href="<?php echo base_url('Cweb_setting')?>"><?php echo display('setting') ?> </a></li>
                </ul>
            </li>
            <!-- Software Settings menu end -->
            <?php
                }
            ?>
	    </ul>
	</div> <!-- /.sidebar -->
</aside>

2. Que le prix en franc congolais soit affiché sur la fiche détaillée du produit

<!-- Product details page start -->
<div class="content-wrapper">
	<section class="content-header">
	    <div class="header-icon">
	        <i class="pe-7s-note2"></i>
	    </div>
	    <div class="header-title">
	        <h1><?php echo display('product_report') ?></h1>
	        <small><?php echo display('product_sales_and_purchase_report') ?></small>
	        <ol class="breadcrumb">
	            <li><a href="#" rel="nofollow noopener noreferrer" target="_blank"><i class="pe-7s-home"></i> <?php echo display('home') ?></a></li>
	            <li><a href="#" rel="nofollow noopener noreferrer" target="_blank"><?php echo display('report') ?></a></li>
	            <li class="active"><?php echo display('product_report') ?></li>
	        </ol>
	    </div>
	</section>

	<section class="content">

		<!-- Alert Message -->
	    <?php
	        $message = $this->session->userdata('message');
	        if (isset($message)) {
	    ?>
	    <div class="alert alert-info alert-dismissable">
	        <button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>
	        <?php echo $message ?>                    
	    </div>
	    <?php 
	        $this->session->unset_userdata('message');
	        }
	        $error_message = $this->session->userdata('error_message');
	        if (isset($error_message)) {
	    ?>
	    <div class="alert alert-danger alert-dismissable">
	        <button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>
	        <?php echo $error_message ?>                    
	    </div>
	    <?php 
	        $this->session->unset_userdata('error_message');
	        }
	    ?>


		<div class="row">
		    <div class="col-sm-12">
		        <div class="panel panel-bd lobidrag">
		            <div class="panel-heading">
		                <div class="panel-title">
		                    <h4><?php echo display('product_details') ?> </h4>
		                </div>
		            </div>
		            <div class="panel-body">
						<h2> <span style="font-weight:normal;"><?php echo display('product_name') ?>: </span><span style="color:#005580;">{product_name}</span></h2>
						<h4> <span style="font-weight:normal;"><?php echo display('model') ?>:</span> <span style="color:#005580;">{product_model}</span></h4>
						<h4> <span style="font-weight:normal;"><?php echo display('price') ?>:</span> <span style="color:#005580;"> 
						<?php echo (($position==0)?"$currency {price}":"{price} $currency") ?></span></h4>
						<table class="table">
							<tr>
								<th><?php echo display('total_purchase') ?> = <span style="color:#ff0000;">{total_purchase}</span></th>
								<th><?php echo display('total_sales') ?> = <span style="color:#ff0000;"> {total_sales}</span></th>
								<th><?php echo display('stock') ?> = <span style="color:#ff0000;"> {stock}</span></th>
							</tr>
						</table>
		            </div>
		        </div>
		    </div>
		 </div>

		<!-- Total Purchase report -->
		<div class="row">
		    <div class="col-sm-12">
		        <div class="panel panel-bd lobidrag">
		            <div class="panel-heading">
		                <div class="panel-title">
		                    <h4><?php echo display('purchase_report') ?> </h4>
		                </div>
		            </div>
		            <div class="panel-body">
		                <div class="table-responsive">
		                    <table id="dataTableExample2" class="table table-bordered table-striped table-hover">
				            	<thead>
									<tr>
										<th><?php echo display('date') ?></th>
										<th><?php echo display('invoice_no') ?></th>
										<th><?php echo display('supplier_name') ?></th>
										<th><?php echo display('quantity') ?></th>
										<th><?php echo display('rate') ?></th>
										<th style="text-align:right;"><?php echo display('total_ammount') ?></th>
									</tr>
								</thead>
								<tbody>
								<?php
									if ($purchaseData) {
								?>
								{purchaseData}
									<tr>
										<td>{final_date}</td>
										<td>
											<a href="<?php echo base_url().'Cpurchase/purchase_details_data/{purchase_id}'; ?>">
												{chalan_no}
											</a>
										</td>
										<td>
											<a href="<?php echo base_url().'Csupplier/supplier_details/{supplier_id}'; ?>">{supplier_name}</a>
										</td>
										<td>{quantity}</td>
										<td><?php echo (($position==0)?"$currency {rate}":"{rate} $currency") ?></td>
										<td style="text-align:right;"> <?php echo (($position==0)?"$currency {total_amount}":"{total_amount} $currency") ?></td>
									</tr>
								{/purchaseData}
								<?php
									}
								?>
								</tbody>
								<tfoot>
									<tr>
										<td colspan="3" style="text-align:right;"><b><?php echo display('grand_total') ?>:</b></td>
										<td> {total_purchase}</td>
										<td></td>
										<td style="text-align:right;"><b> <?php echo (($position==0)?"$currency {purchaseTotalAmount}":"{purchaseTotalAmount} $currency") ?></b></td>
									</tr>
								</tfoot>
		                    </table>
		                </div>
		            </div>
		        </div>
		    </div>
		</div>

		<!--Total sales report -->
		<div class="row">
		    <div class="col-sm-12">
		        <div class="panel panel-bd lobidrag">
		            <div class="panel-heading">
		                <div class="panel-title">
		                    <h4><?php echo display('sales_report') ?> </h4>
		                </div>
		            </div>
		            <div class="panel-body">
		                <div class="table-responsive">
		                    <table id="dataTableExample3" class="table table-bordered table-striped table-hover">
		             			<thead>
									<tr>
										<th><?php echo display('date') ?></th>
										<th><?php echo display('invoice_no') ?></th>
										<th><?php echo display('customer_name') ?></th>
										<th><?php echo display('quantity') ?></th>
										<th><?php echo display('rate') ?></th>
										<th style="text-align:right;"><?php echo display('total_ammount') ?></th>
									</tr>
								</thead>
								<tbody>
								<?php
									if ($salesData) {
								?>
								{salesData}
									<tr>
										<td>{final_date}</td>
										<td>
											<a href="<?php echo base_url().'Cinvoice/invoice_inserted_data/{invoice_id}'; ?>">
												{invoice_id}
											</a>
										</td>
										<td>
											<a href="<?php echo base_url().'Ccustomer/customer_ledger/{customer_id}'; ?>">{customer_name}</a>
										</td>
										<td>{quantity}</td>
										<td> <?php echo (($position==0)?"$currency {rate}":"{rate} $currency") ?></td>
										<td style="text-align:right;"> <?php echo (($position==0)?"$currency {total_price}":"{total_price} $currency") ?></td>
									</tr>
								{/salesData}
								<?php
									}
								?>
								</tbody>
								<tfoot>
									<tr>
										<td colspan="3" style="text-align:right;"><b><?php echo display('grand_total') ?>:</b></td>
										<td>  {total_sales}</td>
										<td> </td>
										<td  style="text-align:right;"><b> <?php echo (($position==0)?"$currency {salesTotalAmount}":"{salesTotalAmount} $currency") ?></b></td>
									</tr>
								</tfoot>
		                    </table>
		                </div>
		            </div>
		        </div>
		    </div>
		</div>
	</section>
</div>
<!-- Product details page end -->

3. Si possible, avoir un rapport de l’historique des taux de jours.

Un coup de pouce svp ?