redirect to bookmark search

def search(self):
        "redirect to bookmark search"
        form = forms.HomeForm()
        bbm_filter = bs_filters.BookmarkBukuFilter(
            all_keywords=False, deep=form.deep.data, regex=form.regex.data)
        op_text = bbm_filter.operation()
        values_combi = sorted(itertools.product([True, False], repeat=3))
        for idx, (all_keywords, deep, regex) in enumerate(values_combi):
            if deep == form.deep.data and regex == form.regex.data and not all_keywords:
                choosen_idx = idx
        url_op_text = op_text.replace(', ', '_').replace('  ', ' ').replace(' ', '_')
        key = ''.join(['flt', str(choosen_idx), '_buku_', url_op_text])
        kwargs = {key: form.keyword.data}
        url = url_for('bookmark.index_view', **kwargs)
        return redirect(url)