account.html

{% extends "layout.html" %}
{% block content %}
    <div class="content-section">
      <div class="media">
        <img class="rounded-circle account-img" src="{{ image_file }}"> <!-- CURRENT USER PROFILE IMAGE -->
        <div class="media-body">
          <h2 class="account-heading">{{ current_user.username }}</h2> <!-- CURRENT USERNAME -->
          <p class="text-secondary">{{ current_user.email }}</p> <!-- CURRENT USER EMAIL -->
        </div>
      </div>
        <form method="POST" action="" enctype="multipart/form-data">
            {{ form.hidden_tag() }}
            <fieldset class="form-group">
                <legend class="border-bottom mb-4">Account Info</legend> <!-- ACCOUNT INFO -->
                <div class="form-group">
                    {{ form.username.label(class="form-control-label") }}

                    {% if form.username.errors %}
                        {{ form.username(class="form-control form-control-lg is-invalid") }}
                        <div class="invalid-feedback">
                            {% for error in form.username.errors %}
                                <span>{{ error }}</span>
                            {% endfor %}
                        </div>
                    {% else %}
                        {{ form.username(class="form-control form-control-lg") }}
                    {% endif %}
                </div>
                <div class="form-group">
                    {{ form.email.label(class="form-control-label") }}
                    {% if form.email.errors %}
                        {{ form.email(class="form-control form-control-lg is-invalid") }}
                        <div class="invalid-feedback">
                            {% for error in form.email.errors %}
                                <span>{{ error }}</span>
                            {% endfor %}
                        </div>
                    {% else %}
                        {{ form.email(class="form-control form-control-lg") }}
                    {% endif %}
                </div>
                <div class="form-group"> <!-- PROFILE PICTURE UPLOAD -->
                    {{ form.picture.label() }}
                    {{ form.picture(class="form-control-file") }}
                    {% if form.picture.errors %}
                        {% for error in form.picture.errors %}
                            <span class="text-danger">{{ error }}</span></br>
                        {% endfor %}
                    {% endif %}
                </div>
            </fieldset>
            <div class="form-group">
                {{ form.submit(class="btn btn-outline-info") }}
            </div>
        </form>
    </div>
{% endblock content %}