Entry field not outputting after {% set... %} code in template

Question

I have an {entry.footer} field outputting just fine everywhere before {% set entry... %} Added {% endset %} tags after closing anchor tag and caused an error. Any idea what the issue is?

{% extends "_layout" %}

{% block home_slider %}
{% include 'global/home-slider.html' %}
{% endblock %}

{% block content %}
            <main id="main" role="main">
                <div id="content">
                    <div class="holder-top">
                        <div class="holder">
                            <div class="text-wrap">
                                <div class="wrap">
                                     {{ entry.body }}
                                </div>
                            </div>
                            <div class="three-columns">
                                <div class="wrap">
                                    {% for block in entry.threeHomepageImages.type('images') %}
                                        <div class="col">
                                            <div class="image-block">
                                                <div class="image">
                                                    {% if block.image|length %}
                                                        <a href="{{ block.pageLink.first().getUrl() }}"><img src="images/{{ block.image.first }}.jpg" alt="{{ block.alt }}"></a>
                                                    {% endif %}
                                                </div>
                                            </div>
                                            <h1><a href="{{ block.pageLink.first().getUrl() }}">{{ block.imageTitle }}</a></h1>
                                        </div>
                                    {% endfor %}
                                </div>
                            </div>
                            <div class="btn-holder">
                                <div class="btn-wrap">
                                    {% set entry = craft.entries.slug('get-a-quote').first %}
                                    <a href="{{ entry.url }}" class="btn-quote">request a quote</a>
                                    {% endset %}
                                </div>
                            </div>
                        </div>
                    </div>
                    <div class="holder-bottom">
                        <div class="quote">
                            {{ entry.footer }}
                        </div>
                    </div>
                </div>
            </main>

{% endblock %}

Answer 1

Here's your problem... You're redefining entry halfway down the page.

This page clearly uses the section's built-in routing functionality. I can tell because you use entry.body near the top of your page without explicitly declaring the value of entry.

However, you later on use {% set entry %} to reassign the value of entry. Based on the new value of entry, the entry.footer property no longer exists or is empty.

How to fix it...

Instead of {% set entry %}, use a different variable name:

{% set getQuoteEntry = craft.entries.slug('get-a-quote').first %}
<a href="{{ getQuoteEntry.url }}" class="btn-quote">request a quote</a>

This will leave the original value of entry untouched, and you'll still have access to entry.footer at the bottom of the page.

Answer 2

The twig set tag has two syntaxes. You can use it like this:

{% set foo = 'bar' %}

or like this:

{% set foo %}bar{% endset %}

They are both useful in different ways.

The error you were getting was about mixing them.