crispy-forms: add css class for one of the inputs

Question

In my forms.py I have

[...]
self.helper.layout = Layout(
    Field('name'),
    Field('description'),
)
self.helper.form_class = 'form-horizontal'
self.helper.label_class = 'col-md-2 col-xs-3'
self.helper.field_class = 'col-md-10 col-xs-9'
[...]

which renders to

<div id="div_id_name" class="form-group">
    <label class="control-label col-md-2 col-xs-3 requiredField" for="id_name">
        Name
    </label
    <div class="controls col-md-10 col-xs-9">
        <input id="id_name" class="textinput textInput form-control" type="text" name="name" maxlength="20">
    </div>
</div>
<div id="div_id_description" class="form-group">
    <label class="control-label col-md-2 col-xs-3 requiredField" for="id_description">
        Description
    </label>
    <div class="controls col-md-10 col-xs-9">
        <textarea id="id_description" class="textarea form-control" rows="10" name="description" cols="40"></textarea>
    </div>
</div>

Now I would like just the name-input to be smaller, like this:

[...]
<div class="controls col-md-8 col-xs-7">
        <input id="id_name" class="textinput textInput form-control" type="text" name="name" maxlength="20">
    </div>
</div>
[...]

(How) can this be achieved in crispy-forms?

Answer 1

One way to add a custom css class to a crispy-forms Field would be to wrap it in a Div with a custom css_class attribute:

from crispy_forms.layout import Layout, Div, Field

self.helper.layout = Layout(
    Div(
        Field('name'), css_class="my_fancy_class_name"
    ),
    Field('description'),
)

For example, now you can customize your Field with some css:

.my_fancy_class_name {
    font-size: 200%;  /* You can change the font size */
    color: green;    /* You can change the font color */
    display: none;  /* You can even hide the Field */
}

Answer 2

The only way to get this working is not using some form.helpers.

My config is

    # from
    self.helper.form_class = 'form-horizontal'
    self.helper.label_class = "col-md-2"
    self.helper.field_class = "col-md-10"
    # -> to
    self.helper.form_class = 'form-vertical'
    #self.helper.label_class = "col-md-2"
    #self.helper.field_class = "col-md-10"
    Fieldset('Address',
                 Div(
                     #I need to set size for every field wrapped in a div
                     Div('tipo_logradouro', css_class="col-md-6"), 
                     Div('logradouro', css_class='col-md-6'),
                     css_class='row'
                 ),
     )

I know this old but I hope it helps someone.

Answer 3

I see two possibilities:

1. Use CSS

#div_id_name {
    font-weight: 0.8em;
}

2. Override the field template

You can override the field template of your field:

Field('field_name', template='my_field_template.html')

For a reference field template, see site-packages/crispy_forms/templates/bootstrap3/field.html.

(3. Waiting)

There's an open issue on Github for this: https://github.com/maraujop/django-crispy-forms/issues/348

Answer 4

To you helper layout:

self.helper.layout = Layout(
    Field('name'),
    Field('description'),

add css_class:

Field('field_name', css_class="controls col-md-8 col-xs-7")

Here is the docs link

Answer 5

Cant you wrap those fields in a div? Doesnt this solve your problem?

self.helper.layout = Layout(
    Div(Field('name',maxlength=20),css_class = 'controls col-md-8 col-xs-7'),
    Field('description'),
)

Answer 6

I've solved it like this:

Field('name', wrapper_class="col-md-6"),