CODEWITHSUNDEEP
pythontemplatesjinja2
Kilrathy
Kilrathy

Reputation: 275

Jinja2 Template - for loop

didn't find another post which has the similar problem, I'm trying to generate some checkboxes with flask and wtforms, at the moment I've got this piece of code:

<div class="control-group">
    <p><strong>Check the enabled BRI Ports</strong></p>
    <label class="checkbox inline">
        {{ form.bri1(value=1) }} {{ form.bri1.label }}
    </label>
    <label class="checkbox inline">
        {{ form.bri2(value=1) }} {{ form.bri2.label }}
    </label>
    <label class="checkbox inline">
        {{ form.bri3(value=1) }} {{ form.bri3.label }}
    </label>
    <label class="checkbox inline">
        {{ form.bri4(value=1) }} {{ form.bri4.label }}
    </label>
</div>

This works so far, but now I try to do this with a simple for-loop like:

<div class="control-group">
    <p><strong>Check the enabled BRI Ports</strong></p>
    {% for n in range(1,6) %}
    <label class="checkbox inline">
        {{ form.brin.label }}
    {% endfor %}
</div>

I tried with (), {} and {{}} ... is this even possible?

Upvotes: 10

Views: 14238

Answers (1)

tbicr
tbicr

Reputation: 26050

Try:

<div class="control-group">
    <p><strong>Check the enabled BRI Ports</strong></p>
    {% for name, field in form._fields.items() %}
        {% if name != 'csrf_token' %}
            <label class="checkbox inline">
                {{ field(value=1) }} {{ field.label }}
            </label>
        {% endif %}
    {% endfor %}
</div>

There you can set sorting instead form._fields.items() or condition instead {% if name != 'csrf_token' %}. Or:

<div class="control-group">
    <p><strong>Check the enabled BRI Ports</strong></p>
    {% for n in range(1,6) %}
        {% if form['bri' + n|string] %}
            <label class="checkbox inline">
                {{ form['bri' + n|string](value=1) }} {{ form['bri' + n|string].label }}
            </label>
        {% endif %}
    {% endfor %}
</div>

There you can also use n.__str__() instead filter n|string.

Upvotes: 15

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