product-list-functions.php

<?php
/*
 * function basic_list_products
 * Displays a list of products according to preference. Optional values default to the values in Presentation Settings -> Product List
 *
 * @param bool $echo Optional, whether to echo or return
 * @param bool $paginate Optional, whether to paginate
 * @param int $page Optional, The page number to display in the product list if $paginate is set to true.
 * @param int $per_page Optional, How many products to display in the product list if $paginate is set to true.
 * @param string $order_by Optional, What field to order products by. Can be: title, date, ID, author, price, sales, rand
 * @param string $order Optional, Direction to order products by. Can be: DESC, ASC
 * @param string $category Optional, limit to a product category
 * @param string $tag Optional, limit to a product tag
 */
function basic_list_products( $echo = true, $paginate = '', $page = '', $per_page = '', $order_by = '', $order = '', $category = '', $tag = '' ) {
  global $wp_query, $mp;
  $settings = get_option('mp_settings');

  //setup taxonomy if applicable
  if ($category) {
    $taxonomy_query = '&product_category=' . sanitize_title($category);
  } else if ($tag) {
    $taxonomy_query = '&product_tag=' . sanitize_title($tag);
  } else if ($wp_query->query_vars['taxonomy'] == 'product_category' || $wp_query->query_vars['taxonomy'] == 'product_tag') {
    $taxonomy_query = '&' . $wp_query->query_vars['taxonomy'] . '=' . get_query_var($wp_query->query_vars['taxonomy']);
  }

  //setup pagination
  $paged = false;
  if ($paginate) {
    $paged = true;
  } else if ($paginate === '') {
    if ($settings['paginate'])
      $paged = true;
    else
      $paginate_query = '&nopaging=true';
  } else {
    $paginate_query = '&nopaging=true';
  }

  //get page details
  if ($paged) {
    //figure out perpage
    if (intval($per_page)) {
      $paginate_query = '&posts_per_page='.intval($per_page);
    } else {
      $paginate_query = '&posts_per_page='.$settings['per_page'];
		}

    //figure out page
    if ($wp_query->query_vars['paged'])
      $paginate_query .= '&paged='.intval($wp_query->query_vars['paged']);

    if (intval($page))
      $paginate_query .= '&paged='.intval($page);
    else if ($wp_query->query_vars['paged'])
      $paginate_query .= '&paged='.intval($wp_query->query_vars['paged']);
  }

  //get order by
  if (!$order_by) {
    if ($settings['order_by'] == 'price')
      $order_by_query = '&meta_key=mp_price_sort&orderby=meta_value_num';
    else if ($settings['order_by'] == 'sales')
      $order_by_query = '&meta_key=mp_sales_count&orderby=meta_value_num';
    else
      $order_by_query = '&orderby='.$settings['order_by'];
  } else {
  	if ('price' == $order_by)
  		$order_by_query = '&meta_key=mp_price_sort&orderby=meta_value_num';
    else
    	$order_by_query = '&orderby='.$order_by;
  }

  //get order direction
  if (!$order) {
    $order_query = '&order='.$settings['order'];
  } else {
    $order_query = '&order='.$order;
  }

  //The Query
  $custom_query = new WP_Query('post_type=product&post_status=publish' . $taxonomy_query . $paginate_query . $order_by_query . $order_query);

  //allows pagination links to work get_posts_nav_link()
  if ($wp_query->max_num_pages == 0 || $taxonomy_query)
    $wp_query->max_num_pages = $custom_query->max_num_pages;

  $content = '<div id="product_list">';

  if ($last = $custom_query->post_count) {
    $count = 1;
    foreach ($custom_query->posts as $post) {
    	
    if ($settings['list_view'] == 'grid')
	  $class = 'product grid';
	else $class='product list';
	
	if ($settings['list_view'] == 'grid')
		if(strlen($post->post_title)>30){
			$product_title = mb_substr($post->post_title,0,30,'UTF-8').'...';
		}
		else{
			$product_title = $post->post_title;
		}
	else $product_title = $post->post_title;

      $content .= '<div '.basic_product_class(false, $class, $post->ID).'>';

      $content .= '<h3 class="product_name"><a href="' . get_permalink( $post->ID ) . '">' . $product_title . '</a></h3>';

      $product_content = basic_product_image( false, 'list', $post->ID );
      if ($settings['show_excerpt'] == 1)
	  	if ($settings['list_view'] == 'list')
        $product_content .= $mp->product_excerpt($post->post_excerpt, $post->post_content, $post->ID);
      $content .= apply_filters( 'mp_product_list_content', $product_content, $post->ID );

      $content .= '<div class="product_meta">';
      //price
      $meta = basic_product_price(false, $post->ID);
      //button
      $meta .= basic_buy_button(false, 'list', $post->ID);
      $content .= apply_filters( 'mp_product_list_meta', $meta, $post->ID );
      $content .= '</div>';

      $content .= '</div>';
      
      $count++;
    }
  } else {
    $content .= '<div id="no_products">' . apply_filters( 'mp_product_list_none', __('No Products', 'basic') ) . '</div>';
  }

  $content .= '</div>';

 	if (  $wp_query->max_num_pages > 1 ) :

		$content .= '<ul class="pager" style="clear: both; float: none;">';
		$content .= '<li class="previous">'.get_previous_posts_link( '<i class="icon-chevron-left"></i> Προηγούμενο' ).'</li>';
		$content .= '<li class="next">'.get_next_posts_link( __( 'Επόμενο <i class="icon-chevron-right"></i>') ).'</li>';
		$content .= '</ul>';
	endif;

  if ($echo)
    echo $content;
  else
    return $content;
}


/**
 * Display the classes for the product div.
 *
 * @param bool $echo Whether to echo class.
 * @param string|array $class One or more classes to add to the class list.
 * @param int $post_id The post_id for the product. Optional if in the loop
 */
function basic_product_class( $echo = true, $class = '', $post_id = null ) {
	// Separates classes with a single space, collates classes for post DIV
	$content = 'class="' . join( ' ', basic_get_product_class( $class, $post_id ) ) . '"';

	if ($echo)
    echo $content;
  else
    return $content;
}


/**
 * Retrieve the list of classes for the product as an array.
 *
 * The class names are add are many. If the post is a sticky, then the 'sticky'
 * class name. The class 'hentry' is always added to each post. For each
 * category, the class will be added with 'category-' with category slug is
 * added. The tags are the same way as the categories with 'tag-' before the tag
 * slug. All classes are passed through the filter, 'post_class' with the list
 * of classes, followed by $class parameter value, with the post ID as the last
 * parameter.
 *
 *
 * @param string|array $class One or more classes to add to the class list.
 * @param int $post_id The post_id for the product. Optional if in the loop
 * @return array Array of classes.
 */
function basic_get_product_class( $class = '', $post_id = null ) {
  global $id;
  $post_id = ( NULL === $post_id ) ? $id : $post_id;

	$post = get_post($post_id);

	$classes = array();

	if ( empty($post) )
		return $classes;

	$classes[] = 'product-' . $post->ID;
	$classes[] = $post->post_type;

	// sticky for Sticky Posts
	if ( is_sticky($post->ID))
		$classes[] = 'sticky';

	// hentry for hAtom compliace
	$classes[] = 'hentry';

	// Categories
	$categories = get_the_terms($post->ID, "product_category");
	foreach ( (array) $categories as $cat ) {
		if ( empty($cat->slug ) )
			continue;
		$classes[] = 'category-' . sanitize_html_class($cat->slug, $cat->cat_ID);
	}

	// Tags
	$tags = get_the_terms($post->ID, "product_tag");
	foreach ( (array) $tags as $tag ) {
		if ( empty($tag->slug ) )
			continue;
		$classes[] = 'tag-' . sanitize_html_class($tag->slug, $tag->term_id);
	}

	if ( !empty($class) ) {
		if ( !is_array( $class ) )
			$class = preg_split('#\s+#', $class);
		$classes = array_merge($classes, $class);
	}

	$classes = array_map('esc_attr', $classes);

	return $classes;
}


/*
 * Displays the product featured image
 *
 * @param bool $echo Optional, whether to echo
 * @param string $context Options are list, single, or widget
 * @param int $post_id The post_id for the product. Optional if in the loop
 * @param int $size An optional width/height for the image if contect is widget
 */
function basic_product_image( $echo = true, $context = 'list', $post_id = NULL, $size = NULL ) {
  global $id;
  $post_id = ( NULL === $post_id ) ? $id : $post_id;
  // Added WPML
  $post_id = apply_filters('mp_product_image_id', $post_id);

  $post = get_post($post_id);

  $settings = get_option('mp_settings');
  $post_thumbnail_id = get_post_thumbnail_id( $post_id );

  if ($context == 'list') {
    //quit if no thumbnails on listings
    if (!$settings['show_thumbnail'])
      return '';

    //size
    $size = array(160, 120);

    //link
    $link = get_permalink($post_id);

    $title = esc_attr($post->post_title);

  } else if ($context == 'single') {
    //size
    if ($settings['product_img_size'] == 'custom')
      $size = array($settings['product_img_width'], $settings['product_img_height']);
    else
      $size = $settings['product_img_size'];

    //link
    $temp = wp_get_attachment_image_src( $post_thumbnail_id, 'large' );
    $link = $temp[0];

    $title = __('View Larger Image &raquo;', 'mp');
    $class = ' class="mp_product_image_link mp_lightbox" rel="lightbox"';

  } else if ($context == 'widget') {
    //size
    if (intval($size))
      $size = array(intval($size), intval($size));
    else
      $size = array(50, 50);

    //link
    $link = get_permalink($post_id);

    $title = esc_attr($post->post_title);

  }

  $image = get_the_post_thumbnail($post_id, $size, array('class' => 'alignleft product_image_'.$context, 'title' => $title));

  //add the link
  if ($link)
    $image = '<div class="image-wrapper"><a id="product_image-' . $post_id . '"' . $class . ' href="' . $link . '">' . $image . '</a></div>';

  if ($echo)
    echo $image;
  else
    return $image;
}


/*
 * Displays the product price (and sale price)
 *
 * @param bool $echo Optional, whether to echo
 * @param int $post_id The post_id for the product. Optional if in the loop
 * @param sting $label A label to prepend to the price. Defaults to "Price: "
 */
function basic_product_price( $echo = true, $post_id = NULL, $label = true ) {
  global $id, $mp;
  $post_id = ( NULL === $post_id ) ? $id : $post_id;

  $label = ($label === true) ? __('', 'mp') : $label;

  $settings = get_option('mp_settings');
	$meta = get_post_custom($post_id);
  //unserialize
  foreach ($meta as $key => $val) {
	  $meta[$key] = maybe_unserialize($val[0]);
	  if (!is_array($meta[$key]) && $key != "mp_is_sale" && $key != "mp_track_inventory" && $key != "mp_product_link" && $key != "mp_file" && $key != "mp_price_sort")
	    $meta[$key] = array($meta[$key]);
	}

  if ((is_array($meta["mp_price"]) && count($meta["mp_price"]) >= 1) || !empty($meta["mp_file"])) {
    if ($meta["mp_is_sale"]) {
	    $price = '<span class="mp_special_price badge badge-important"><del class="mp_old_price">'.$mp->format_currency('', $meta["mp_price"][0]).'</del>';
	    $price .= '<span class="mp_current_price">'.$mp->format_currency('', $meta["mp_sale_price"][0]).'</span></span>';
	  } else {
	    $price = '<span class="mp_normal_price"><span class="mp_current_price badge badge-important">'.$mp->format_currency('', $meta["mp_price"][0]).'</span></span>';
	  }
	} else {
		return '';
	}

  $price = apply_filters( 'mp_product_price_tag', '<span class="mp_product_price">' . $label . $price . '</span>', $post_id, $label );

  if ($echo)
    echo $price;
  else
    return $price;
}


/*
 * Displays the buy or add to cart button
 *
 * @param bool $echo Optional, whether to echo
 * @param string $context Options are list or single
 * @param int $post_id The post_id for the product. Optional if in the loop
 */
function basic_buy_button( $echo = true, $context = 'list', $post_id = NULL ) {
  global $id, $mp;
  $post_id = ( NULL === $post_id ) ? $id : $post_id;

  $settings = get_option('mp_settings');
  $meta = get_post_custom($post_id);
  //unserialize
  foreach ($meta as $key => $val) {
	  $meta[$key] = maybe_unserialize($val[0]);
	  if (!is_array($meta[$key]) && $key != "mp_is_sale" && $key != "mp_track_inventory" && $key != "mp_product_link" && $key != "mp_file")
	    $meta[$key] = array($meta[$key]);
	}

  //check stock
  $no_inventory = array();
  $all_out = false;
  if ($meta['mp_track_inventory']) {
    $cart = $mp->get_cart_contents();
    if (is_array($cart[$post_id])) {
	    foreach ($cart[$post_id] as $variation => $data) {
	      if ($meta['mp_inventory'][$variation] <= $data['quantity'])
	        $no_inventory[] = $variation;
			}
			foreach ($meta['mp_inventory'] as $key => $stock) {
	      if (!in_array($key, $no_inventory) && $stock <= 0)
	        $no_inventory[] = $key;
			}
		}

		//find out of stock items that aren't in the cart
		foreach ($meta['mp_inventory'] as $key => $stock) {
      if (!in_array($key, $no_inventory) && $stock <= 0)
        $no_inventory[] = $key;
		}

		if (count($no_inventory) >= count($meta["mp_price"]))
		  $all_out = true;
  }

  //display an external link or form button
  if ($product_link = $meta['mp_product_link']) {

    $button = '<a class="mp_link_buynow btn btn-primary" href="' . esc_url($product_link) . '">' . __('Buy Now &raquo;', 'mp') . '</a>';

  } else if ($settings['disable_cart']) {
    
    $button = '';
    
  } else {

    $button = '<form class="mp_buy_form" method="post" action="' . basic_cart_link(false, true) . '">';

    if ($all_out) {
      $button .= '<span class="mp_no_stock">' . __('Out of Stock', 'mp') . '</span>';
    } else {

	    $button .= '<input type="hidden" name="product_id" value="' . $post_id . '" />';

			//create select list if more than one variation
		  if (is_array($meta["mp_price"]) && count($meta["mp_price"]) > 1 && empty($meta["mp_file"])) {
	      $variation_select = '<select class="mp_product_variations" name="variation">';
				foreach ($meta["mp_price"] as $key => $value) {
				  $disabled = (in_array($key, $no_inventory)) ? ' disabled="disabled"' : '';
				  $variation_select .= '<option value="' . $key . '"' . $disabled . '>' . esc_html($meta["mp_var_name"][$key]) . ' - ';
					if ($meta["mp_is_sale"] && $meta["mp_sale_price"][$key]) {
		        $variation_select .= $mp->format_currency('', $meta["mp_sale_price"][$key]);
		      } else {
		        $variation_select .= $mp->format_currency('', $value);
		      }
		      $variation_select .= "</option>\n";
		    }
	      $variation_select .= "</select>&nbsp;\n";
	 		} else {
	      $button .= '<input type="hidden" name="variation" value="0" />';
			}

	    if ($context == 'list') {
	      if ($variation_select) {
        	$button .= '<a class="mp_link_buynow btn btn-primary" href="' . get_permalink($post_id) . '">' . __('Choose Option &raquo;', 'mp') . '</a>';
	      } else if ($settings['list_button_type'] == 'addcart') {
	        $button .= '<input type="hidden" name="action" value="mp-update-cart" />';
	        $button .= '<input class="mp_button_addcart btn btn-primary" type="submit" name="addcart" value="' . __('Add To Cart &raquo;', 'mp') . '" />';
	      } else if ($settings['list_button_type'] == 'buynow') {
	        $button .= '<input class="mp_button_buynow btn btn-primary" type="submit" name="buynow" value="' . __('Buy Now &raquo;', 'mp') . '" />';
	      }
	    } else {

	      $button .= $variation_select;

	      //add quantity field if not downloadable
	      if ($settings['show_quantity'] && empty($meta["mp_file"])) {
	        $button .= '<span class="mp_quantity"><label>' . __('Quantity:', 'mp') . ' <input class="mp_quantity_field" type="text" size="1" name="quantity" value="1" /></label></span>&nbsp;';
	      }

	      if ($settings['product_button_type'] == 'addcart') {
	        $button .= '<input type="hidden" name="action" value="mp-update-cart" />';
	        $button .= '<input class="mp_button_addcart btn btn-primary" type="submit" name="addcart" value="' . __('Add To Cart &raquo;', 'mp') . '" />';
	      } else if ($settings['product_button_type'] == 'buynow') {
	        $button .= '<input class="mp_button_buynow btn btn-primary" type="submit" name="buynow" value="' . __('Buy Now &raquo;', 'mp') . '" />';
	      }
	    }

    }

    $button .= '</form>';
  }

  $button = apply_filters( 'mp_buy_button_tag', $button, $post_id, $context );

  if ($echo)
    echo $button;
  else
    return $button;
}