oshipka/vm_gen/templates/html/_update.html

<form action="{{ url_for('update_[[ name|camel_to_snake ]]', uuid=instance.id) }}" method="post">
    <input type="hidden" name="_next" value="{{ _next or request.args.get('_next') or url_for('get_[[ name|camel_to_snake ]]', uuid=instance.id) }}"/>
    [%- for column in columns %]
    <label for="input-[[ name|camel_to_snake ]]-[[ column.name ]]">[[ column.name ]]</label>:
    [%- if column.type in ['relationship'] %]
        <select id="input-[[ name|camel_to_snake ]]-[[ column.name ]]"
               [%- if column.multiple %]multiple name="_m_n_[[ column.name|pluralize ]]"[% else %]name="[[ column.name ]]_id"[%- endif %]>
                {%- for sub_instance in model_views.[[ column.name ]].model.query.all() %}
            <option value="{{ sub_instance.id }}"
                    [%- if column.multiple %]
                    {% if sub_instance in instance.[[ column.name|pluralize ]] %}selected="selected"{% endif %}>{{ sub_instance.name }}</option>
                    [%- else %]
                    {% if instance.[[ column.name ]]_id == sub_instance.id %}selected="selected"{% endif %}>{{ sub_instance.name }}</option>
                    [%- endif %]
                {%- endfor %}
        </select>
    [%- elif column.type in ['choice', ] %]
        <select id="input-[[ name|camel_to_snake ]]-[[ column.name ]]"
               name="[[ column.name ]]_id">
            [%- for value, display in column.choices.items() %]
            <option value="[[ value ]]" {% if instance.[[ column.name ]] == "[[ value ]]" %}selected="selected"{% endif %}>[[ display ]]</option>
            [%- endfor %]
        </select>
    [%- elif column.type in ['number', 'int', 'integer', ] %]
        <input id="input-[[ name|camel_to_snake ]]-[[ column.name ]]"
               value="{{ instance.[[ column.name ]] }}"
               type="number" name="[[ column.name ]]"
        />
    [%- else %]
    <input id="input-[[ name|camel_to_snake ]]-[[ column.name ]]"
           value="{{ instance.[[ column.name ]] }}"
           type="text" name="[[ column.name ]]" autocomplete="off"
    />
    [%- endif %]
    <br>
    [%- endfor %]
    <input type="submit">
</form>