widgets.py 文件源码

def render(self, name, value, attrs=None):
        if value is None:
            value = ''
        extra_attrs = dict()
        extra_attrs['type'] = self.input_type
        extra_attrs['name'] = name
        input_attrs = self.build_attrs(attrs, extra_attrs)
        if value != '':
            # Only add the 'value' attribute if a value is non-empty.
            input_attrs['value'] = force_text(self._format_value(value))
        input_attrs = {key: conditional_escape(val) for key, val in input_attrs.items()}
        if not self.picker_id:
            self.picker_id = (input_attrs.get('id', '') + '_pickers').replace(' ', '_')
        self.div_attrs['id'] = self.picker_id
        picker_id = conditional_escape(self.picker_id)
        div_attrs = {key: conditional_escape(val) for key, val in self.div_attrs.items()}
        icon_attrs = {key: conditional_escape(val) for key, val in self.icon_attrs.items()}
        html = self.html_template % dict(div_attrs=flatatt(div_attrs),
                                         input_attrs=flatatt(input_attrs),
                                         icon_attrs=flatatt(icon_attrs))
        if self.options:
            js = self.js_template % dict(picker_id=picker_id, options=json_dumps(self.options or {}))
        else:
            js = ''
        return mark_safe(force_text(html + js))