List Layouts

22min
Similar to WebApp List Layouts, a Product List Layout can allow users to browse Products. It can be filtered and sorted too!
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Prerequisites
You have created Products in the Admin
Getting Started
This Tutorial will show you how to output a list of Products on your site.
It will cover how to:
Find where Product layouts are stored on Code Editor
Develop a wrapper.liquid file
Develop an item.liquid file
Add a List of Products to a Site
HTML
|
{%- include 'ecommerce/products'
    layout: "products"
    category_ids: current_category_id
    type: 'list',
    show_pagination: 'true'
-%}
{%- include 'ecommerce/products'
    layout: "products"
    category_ids: current_category_id
    type: 'list',
    show_pagination: 'true'
-%}
﻿
Parameters:
layout - choose the layout file for this list.
category_ids - filter the List by these category ids
sort_type  - the field you wish the sort by
sort_order - 'asc' or 'desc' - the order you wish to sort by.
use_search - See WebApp Search On The Front﻿
type - Should be list, for a List View layout. This can also be used to display different types of layouts, like a Cart in a different context. 
show_pagination - if pagination should be displayed after the products. Default is 'true' 
Folder Structure
In SITE MANAGER/Code Editor, the folder structure for eCommerce layouts is as below:
layouts
modules
module_14

product
name_of_my_layout
list
wrapper.liquid
item.liquid
detail
wrapper.liquid
item.liquid

product_attributes
my_attribute_layout.liquid
Creating a new set of Product Layouts
To create a new set of Product layouts- create your folder at the level of "name_of_my_layout". Inside that, the folders and files should be created as shown above.
List Layout Development
A list view for products is made up of two parts.
wrapper.liquid
 wrapper.liquid -- list view example
HTML
|
<div class="row">
  <div class="card-deck"> {%- include 'modules/siteglide_ecommerce/ecommerce/get/get_products'
                              item_layout: 'item' 
                          -%}
  </div>
</div>
<div class="row">
  <div class="card-deck"> {%- include 'modules/siteglide_ecommerce/ecommerce/get/get_products'
                              item_layout: 'item' 
                          -%}
  </div>
</div>
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The wrapper contains the code for the main part of the section you are building. For example, the section title or some margin or padding that separates your list from other sections.
In the wrapper.liquid file, it is important to include the liquid file which loops over the Product items:
HTML
|
{%- include 'modules/siteglide_ecommerce/ecommerce/get/get_products'
    item_layout: 'item' 
-%}
{%- include 'modules/siteglide_ecommerce/ecommerce/get/get_products'
    item_layout: 'item' 
-%}
﻿
The item_layout parameter should be the name of a liquid file in the same folder as the current file. Usually this will be "item", but you could have an alternative Layout.
item.liquid
 item.liquid -- list view example
HTML
|
<div class="card">
  <div class="card-img">
    <a href="/{{this.module_slug}}/{{this.slug}}">
      <img src="{{this.Image | asset_url}}" alt="{{this.name}}" class="card-img-top">
    </a>
  </div>
  <div class="card-body">
    <a style="height: 100%" href="/{{this.module_slug}}/{{this.slug}}">
      <h3 class="card-title">{{this['name']}}</h3>
      <p>{{this.price.currency_symbol}}{{this.price.price_charge_formatted}}</p>
    </a>
  </div>
</div>
<div class="card">
  <div class="card-img">
    <a href="/{{this.module_slug}}/{{this.slug}}">
      <img src="{{this.Image | asset_url}}" alt="{{this.name}}" class="card-img-top">
    </a>
  </div>
  <div class="card-body">
    <a style="height: 100%" href="/{{this.module_slug}}/{{this.slug}}">
      <h3 class="card-title">{{this['name']}}</h3>
      <p>{{this.price.currency_symbol}}{{this.price.price_charge_formatted}}</p>
    </a>
  </div>
</div>
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This file contains the code for each iteration of the loop that displays the Products. You should expect this code to be rendered multiple times; once for each product displayed in the list. (Hint: Try not to run any GraphQL calls inside a loop or item.liquid file, as they would have an impact on performance. It is better to run these inside the wrapper.)
As it is inside the loop, the item.liquid file has access to the "this" object and dynamic information specific to an individual product. A full reference for the fields you can use can be found here or you may find it convenient to output the "this" object on the page you are developing:
Output all data available in the "this" object: {{this | json}}
Adding to Cart on the List View
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Update 
Previously, adding Products from a List View to the Cart was only partially supported. 
 What we did support on the List View:
Adding one of each Product at a time
What we now also support, with some small code changes:
Choosing the Quantity before adding to Cart
Choosing Attributes before adding to Cart
Marking Separate Products to support the Advanced Features of Adding to Cart on a Product List View
In order to help the JavaScript understand which Quantity and Attribute Control belongs to which Product, we've added a new requirement to Product List Layouts. Please add the following data-attribute on the highest-level HTML element in your item.liquid file. 

In this example, the highest level element in the file is a <div> element which is wrapped around the rest of the content in the file, but yours could be any element. The important thing is that this element is wrapped around any controls in the File.
HTML
|
<div class="card" data-product-group>
  <div class="card-img">
    <a href="/{{this.module_slug}}/{{this.slug}}">
      <img src="{{this.Image | asset_url}}" alt="{{this.name}}" class="card-img-top">
    </a>
  </div>
  <div class="card-body">
    <a style="height: 100%" href="/{{this.module_slug}}/{{this.slug}}">
      <h3 class="card-title">{{this['name']}}</h3>
      <p>{{this.price.currency_symbol}}{{this.price.price_charge_formatted}}   </p>
    </a>
  </div>
</div>
<div class="card" data-product-group>
  <div class="card-img">
    <a href="/{{this.module_slug}}/{{this.slug}}">
      <img src="{{this.Image | asset_url}}" alt="{{this.name}}" class="card-img-top">
    </a>
  </div>
  <div class="card-body">
    <a style="height: 100%" href="/{{this.module_slug}}/{{this.slug}}">
      <h3 class="card-title">{{this['name']}}</h3>
      <p>{{this.price.currency_symbol}}{{this.price.price_charge_formatted}}   </p>
    </a>
  </div>
</div>
﻿
For old sites which do upgrade the eCommerce Module, but do not add this data-attribute, we'll add a console log in dev-tools to act as a reminder, but any functionality which worked previously will continue to work.
Adding to Cart on the List View
As with Detail Layouts, you'll need to include the following Liquid and HTML code within the item.liquid file. It's also now important that these elements lie within the element with the data-product-group Attribute, when you're building a List Layout. See the section above for details.

The "Add to Cart" Button
{% include 'ecommerce/cart_add' -%} 
The Quantity Control
HTML
|
<input type="number" 
       min="1" 
       max="{{this.inventory.quantity}}" 
       data-quantity-control id="quantity" />  
<input type="number" 
       min="1" 
       max="{{this.inventory.quantity}}" 
       data-quantity-control id="quantity" />  
﻿
This is mandatory, but can be hidden and hard-coded to have a value of 1, if you want to simplify the UI:
HTML
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<input readonly hidden type="number" 
       min="1" 
       max="1" 
       value="1"  
       data-quantity-control id="quantity" />
<input readonly hidden type="number" 
       min="1" 
       max="1" 
       value="1"  
       data-quantity-control id="quantity" />
﻿
Attribute Control
As this code can be complex, so please refer to the Attributes Layout doc for further information, or take a look at the full example below.
Full Example:
Example of an item.liquid file in a Product Layout which supports Adding to Cart:
HTML
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<div class="card" data-product-group>
    <div class="card-img">
        <a href="/{{this['module_slug']}}/{{this['slug']}}" 
           title="">
           <img src="{{this['Image'] | asset_url}}" alt="{{this['name']}}"></a>
    </div>
    <div class="card-body">
        <h2 class="card-title">
            <a href="/{{this['module_slug']}}/{{this['slug']}}" 
            title="">{{this['name']}}</a></h2>
        <p>{{this.price.currency_symbol}}{{this.price.price_charge_formatted}}</p>
    </div>
    {% include 'ecommerce/cart_add' -%}
    <label for="quantity">Quantity</label>
    <input type="number" min="1" value="1" data-quantity-control id="quantity" />
    {% comment %}-----The following liquid code block loops over all attributes on this Product
                 ----{% endcomment %}
    {% for attribute in this.product_attributes %}
      {% if attribute.properties.enabled == true %}
        {% include 'ecommerce/product_attributes'
                    name: attribute.properties.name
                    layout: 'demo_site_attributes' 
        -%} 
      {% endif %}
    {% endfor %}
    <div class="card-footer">
        <p class="tag">
            {% for category in this.category_array %}
                <a class="btn btn-primary" 
                href="{{context.exports.categories.items[category].full_slug}}" 
                title=""><i class="fas fa-tag">
                    </i>{{context.exports.categories.items[category].name}}
                </a>
            {% endfor %}
        </p>
    </div>
</div>  
<div class="card" data-product-group>
    <div class="card-img">
        <a href="/{{this['module_slug']}}/{{this['slug']}}" 
           title="">
           <img src="{{this['Image'] | asset_url}}" alt="{{this['name']}}"></a>
    </div>
    <div class="card-body">
        <h2 class="card-title">
            <a href="/{{this['module_slug']}}/{{this['slug']}}" 
            title="">{{this['name']}}</a></h2>
        <p>{{this.price.currency_symbol}}{{this.price.price_charge_formatted}}</p>
    </div>
    {% include 'ecommerce/cart_add' -%}
    <label for="quantity">Quantity</label>
    <input type="number" min="1" value="1" data-quantity-control id="quantity" />
    {% comment %}-----The following liquid code block loops over all attributes on this Product
                 ----{% endcomment %}
    {% for attribute in this.product_attributes %}
      {% if attribute.properties.enabled == true %}
        {% include 'ecommerce/product_attributes'
                    name: attribute.properties.name
                    layout: 'demo_site_attributes' 
        -%} 
      {% endif %}
    {% endfor %}
    <div class="card-footer">
        <p class="tag">
            {% for category in this.category_array %}
                <a class="btn btn-primary" 
                href="{{context.exports.categories.items[category].full_slug}}" 
                title=""><i class="fas fa-tag">
                    </i>{{context.exports.categories.items[category].name}}
                </a>
            {% endfor %}
        </p>
    </div>
</div>  
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