Custom liquid field in product form

[NinoGTM]

I added a custom liquid in my product form which contains a text field and a picture upload.

In the code i pasted into the liquid the picture upload is required but I can still add the item to cart without uploading a picture and I cant find the issue here.

[Made4uo-Ribe · Accepted solution]

Hi @NinoGTM 

Unfortunately, with the new updates in Shopify themes, you might have to do extra step

• From your Shopify admin dashboard, click on "Online Store" and then "Themes".
• Find the theme that you want to edit and click on "Customize" and then go to your product template.
• Add a new custom liquid block,

NOTE: In the code, I made a comment where to place your custom property. Please change prior to pasting the code to "Custom liquid" block. Make sure to add required in your code. 

{% comment %}
  Renders product buy-buttons.
  Accepts:
  - product: {Object} product object.
  - block: {Object} passing the block information.
  - product_form_id: {String} product form id.
  - section_id: {String} id of section to which this snippet belongs.
  - show_pickup_availability: {Boolean} for the pickup availability. If true the pickup availability is rendered, false - not rendered (optional).

  Usage:
  {% render 'buy-buttons', block: block, product: product, product_form_id: product_form_id, section_id: section.id, show_pickup_availability: true %}
{% endcomment %}
<div {{ block.shopify_attributes }}>
  {%- if product != blank -%}
    {%- liquid
      assign gift_card_recipient_feature_active = false
      if block.settings.show_gift_card_recipient and product.gift_card?
        assign gift_card_recipient_feature_active = true
      endif

      assign show_dynamic_checkout = false
      if block.settings.show_dynamic_checkout and gift_card_recipient_feature_active == false
        assign show_dynamic_checkout = true
      endif
    -%}

    <product-form
      class="product-form"
      data-hide-errors="{{ gift_card_recipient_feature_active }}"
      data-section-id="{{ section.id }}"
    >
      <div class="product-form__error-message-wrapper" role="alert" hidden>
        <svg
          aria-hidden="true"
          focusable="false"
          class="icon icon-error"
          viewBox="0 0 13 13"
        >
          <circle cx="6.5" cy="6.50049" r="5.5" stroke="white" stroke-width="2"/>
          <circle cx="6.5" cy="6.5" r="5.5" fill="#EB001B" stroke="#EB001B" stroke-width="0.7"/>
          <path d="M5.87413 3.52832L5.97439 7.57216H7.02713L7.12739 3.52832H5.87413ZM6.50076 9.66091C6.88091 9.66091 7.18169 9.37267 7.18169 9.00504C7.18169 8.63742 6.88091 8.34917 6.50076 8.34917C6.12061 8.34917 5.81982 8.63742 5.81982 9.00504C5.81982 9.37267 6.12061 9.66091 6.50076 9.66091Z" fill="white"/>
          <path d="M5.87413 3.17832H5.51535L5.52424 3.537L5.6245 7.58083L5.63296 7.92216H5.97439H7.02713H7.36856L7.37702 7.58083L7.47728 3.537L7.48617 3.17832H7.12739H5.87413ZM6.50076 10.0109C7.06121 10.0109 7.5317 9.57872 7.5317 9.00504C7.5317 8.43137 7.06121 7.99918 6.50076 7.99918C5.94031 7.99918 5.46982 8.43137 5.46982 9.00504C5.46982 9.57872 5.94031 10.0109 6.50076 10.0109Z" fill="white" stroke="#EB001B" stroke-width="0.7">
        </svg>
        <span class="product-form__error-message"></span>
      </div>

      {%- form 'product',
        product,
        id: product_form_id,
        class: 'form',
        data-type: 'add-to-cart-form'
      -%}
        
       <!-- ==================== Custom property - START ==================== -->
        <p class="line-item-property__field">
          <label>Upload your image here </label> 
          <input type="file" name="pic" accept="image/*" required> 
        </p>

       <!-- ==================== Custom property - END ==================== -->
        
        <input
          type="hidden"
          name="id"
          value="{{ product.selected_or_first_available_variant.id }}"
          disabled
          class="product-variant-id"
        >

        {%- if gift_card_recipient_feature_active -%}
          {%- render 'gift-card-recipient-form', product: product, form: form, section: section -%}
        {%- endif -%}

        <div class="product-form__buttons">
          {%- liquid
            assign check_against_inventory = true
            if product.selected_or_first_available_variant.inventory_management != 'shopify' or product.selected_or_first_available_variant.inventory_policy == 'continue'
              assign check_against_inventory = false
            endif
            if product.selected_or_first_available_variant.quantity_rule.min > product.selected_or_first_available_variant.inventory_quantity and check_against_inventory
              assign quantity_rule_soldout = true
            endif
          -%}
          <button
            id="ProductSubmitButton-{{ section_id }}"
            type="submit"
            name="add"
            class="product-form__submit button button--full-width button--secondary"
            {% if product.selected_or_first_available_variant.available == false or quantity_rule_soldout %}
              disabled
            {% endif %}
          >
            <span>
              {%- if product.selected_or_first_available_variant.available == false or quantity_rule_soldout -%}
                {{ 'products.product.sold_out' | t }}
              {%- else -%}
                {{ 'products.product.add_to_cart' | t }}
              {%- endif -%}
            </span>
            <div class="loading-overlay__spinner hidden">
              <svg
                aria-hidden="true"
                focusable="false"
                class="spinner"
                viewBox="0 0 66 66"
                xmlns="http://www.w3.org/2000/svg"
              >
                <circle class="path" fill="none" stroke-width="6" cx="33" cy="33" r="30"></circle>
              </svg>
            </div>
          </button>
      
            {{ form | payment_button }}
  
        </div>
      {%- endform -%}
    </product-form>
  {%- else -%}
    <div class="product-form">
      <div class="product-form__buttons form">
        <button
          type="submit"
          name="add"
          class="product-form__submit button button--full-width button--primary"
          disabled
        >
          {{ 'products.product.sold_out' | t }}
        </button>
      </div>
    </div>
  {%- endif -%}

  {%- if show_pickup_availability -%}
    {{ 'component-pickup-availability.css' | asset_url | stylesheet_tag }}

    {%- assign pick_up_availabilities = product.selected_or_first_available_variant.store_availabilities
      | where: 'pick_up_enabled', true
    -%}

    <pickup-availability
      class="product__pickup-availabilities no-js-hidden quick-add-hidden"
      {% if product.selected_or_first_available_variant.available and pick_up_availabilities.size > 0 %}
        available
      {% endif %}
      data-root-url="{{ routes.root_url }}"
      data-variant-id="{{ product.selected_or_first_available_variant.id }}"
      data-has-only-default-variant="{{ product.has_only_default_variant }}"
    >
      <template>
        <pickup-availability-preview class="pickup-availability-preview">
          {% render 'icon-unavailable' %}
          <div class="pickup-availability-info">
            <p class="caption-large">{{ 'products.product.pickup_availability.unavailable' | t }}</p>
            <button class="pickup-availability-button link link--text underlined-link">
              {{ 'products.product.pickup_availability.refresh' | t }}
            </button>
          </div>
        </pickup-availability-preview>
      </template>
    </pickup-availability>

    <script src="{{ 'pickup-availability.js' | asset_url }}" defer="defer"></script>
  {%- endif -%}
</div>

• Make sure to hide the original add to cart buttons. 

See where to place your code below.

Please don't forget to Like and Mark Solution to the post that helped you. Thanks!

[NinoGTM]

I currently dont have acces to the code because I have the Theme as a test and havent bought it yet so I cant check if that would work right now

Edit: Sry I misunderstood where i should put that code.

I tried it and it kind of works but now the add to cart button is just normal text without the design of the theme but everything else works fine

[Liam]

You mentioned that "In the code i pasted into the liquid the picture upload is required" - how is this set up? 

[NinoGTM]

On the product page i added a custom liquid block and I pasted this code into it:

<label for="custom_photo">Bild 1</label>
<input class="custominput" required id="custom_photo" type="file" name="properties[Bild]" class="product-form__input">

[Liam]

I don't think adding required as a HTML attribute will work for blocking the add to cart action - I think you'll need to use JS and set up event listeners to block the action. 

[Made4uo-Ribe]

Hi to future readers, 

Just for future reference for future readers. We create an enhanced Shopify UI elements generator tool that works on product page, cart page, and also the contact form. This is easy to use, no code needed, and the good part is, it is FREE. Please check the video below