holiday-api/templates/dialogs/edit-holiday.gohtml

<dialog class="card" id="update-card">
    <h3 class="card-title">Edit holiday</h3>
    <form method="post" action="/admin/holidays">
        <input type="hidden" name="id" value="{{.Holiday.Id}}">
        <section>
            <label for="country">Country:</label>
            <select id="country" required name="country">
                {{range $entry := .Countries}}
                    <option {{if eq $.Holiday.Country $entry.IsoName}}selected{{end}} value="{{$entry.IsoName}}">{{$entry.Name}}</option>
                {{end}}
            </select>
        </section>
        <section>
            <label for="name">Name:</label>
            <input required id="name" value="{{.Holiday.Name}}" name="name" type="text">
        </section>
        <section>
            <label for="description">Description:</label>
            <textarea id="description" name="description">{{.Holiday.Description}}</textarea>
        </section>
        <section>
            <label for="date">Date:</label>
            <input required id="date" value="{{.Holiday.Date.Format "2006-01-02"}}" name="date" type="date">
        </section>
        <section>
            <label class="checkbox"><span>State holiday</span><input id="state_holiday" value="true" {{if .Holiday.IsStateHoliday}}checked{{end}} name="state_holiday" type="checkbox"></label>
        </section>
        <section>
            <label class="checkbox"><span>Religious holiday</span><input id="religious_holiday" value="true" {{if .Holiday.IsReligiousHoliday}}checked{{end}} name="religious_holiday" type="checkbox"></label>
        </section>
        <section class="actions">
            <button type="submit">Update</button>
            <button type="button" onclick="closeDialog('#update-card')">Cancel</button>
        </section>
    </form>
</dialog>