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Add the Agreements Section to a Custom Checkout Based on the Single Page Checkout Workflow (Example) 

Agreements Section 

As an illustration, we are going to add the Agreements section to acme_demo_checkout_single_page. Extend save_state and create_order with the customerConsents attribute field in order to display the section.

workflows:
    acme_demo_checkout_single_page:
        transitions:
            # ...
            save_state:
                # ...
                form_options:
                    # ...
                    attribute_fields:
                        # ...
                        customerConsents:
                            form_type: Oro\Bundle\ConsentBundle\Form\Type\ConsentAcceptanceType
                            options:
                                required: true
                                property_path: customerConsents
                        # ...
            # ...
            create_order:
                # ...
                form_options:
                    # ...
                    attribute_fields:
                        # ...
                        customerConsents:
                            form_type: Oro\Bundle\ConsentBundle\Form\Type\ConsentAcceptanceType
                            options:
                                required: true
                                property_path: customerConsents
                       # ...

Next, add the transition definitions that save consents and check that all mandatory consents are accepted.

workflows:
    acme_demo_checkout_single_page:
        transition_definitions:
            # ...
            save_state_definition:
                  # ...
                  - '@assign_value':
                      conditions:
                          '@not':
                              - '@is_consents_accepted':
                                  acceptedConsents: $customerConsents
                      parameters: [$consents_available, true]

                  - '@save_accepted_consents':
                      acceptedConsents: $customerConsents
                  # ...
            # ...
            create_order_transition_definition:
                # ...
                conditions:
                    '@and':
                        # ...
                        - '@is_consents_accepted':
                            acceptedConsents: $customerConsents
                            message: oro.checkout.workflow.condition.required_consents_should_be_checked_on_single_page_checkout.message
                            type: 'warning'
                        # ...
                # ...
                actions:
                    # ...
                    - '@save_accepted_consents':
                        acceptedConsents: $customerConsents
                    # ...

Template 

To show a block with the consent items:

  1. Import a layout with the consent items and configure it.

    layout:
        imports:
            # ...
            -
                id: oro_consent_items
                namespace: checkout
                root: checkout_consent_container
        actions:
            # ...
            - '@add':
               id: checkout_consent_container
               blockType: container
               parentId: checkout_order_summary_totals_container
               siblingId: checkout_order_summary_totals_sticky_container
               prepend: true
    
            - '@add':
               id: checkout_consent_message
               blockType: consent_acceptance_choice
               parentId: checkout_consent_container
    
  2. Customize the templates, as illustrated below.

    {% block _checkout_consent_container_widget %}
        <div {{ block('block_attributes') }}>
            <span class="label label--full text-uppercase">
                {{- 'oro.consent.frontend.checkout.form.sections.data_protection.label'|trans -}}
            </span>
            {{ parent_block_widget(block) }}
        </div>
    {% endblock %}
    
    {% block _checkout_consent_message_widget %}
        {% set attr = layout_attr_defaults(attr, {
            'class': 'notification notification--success'
        }) %}
    
        {% if consents is empty %}
            <div {{ block('block_attributes') }}>
                <span class="notification__item">
                    <i class="fa-check"></i> {{ 'oro.consent.frontend.single_page_checkout.form.messages.all_agreements_accepted'|trans }}
                </span>
            </div>
        {% endif %}
    {% endblock %}