flask-flatpages search

forms.py

class SearchFlatsForm(Form):
    """search flat pages"""
    searchterm = StringField('searchterm',
    validators=[DataRequired(),
    Length(min=3, max=30),
    ])

search.html

{% extends "layout.html" %}
{% block content %}

<!-- Start your project here-->

<h2>Search</h2>

<hr>

<form id="SearchFlatsForm" class="form" method="POST" action="{{ url_for('flat.searchflats') }}" role="form">
        <input type="hidden" name="csrf_token" value="{{ csrf_token() }}"/>
        <div class="form-group">
            {{form.searchterm(placeholder="enter search term", class_="form-control")}}
        </div>
        <p><input class="btn btn-default btn-submit" type="submit" value="search"></p>
</form>
<hr>
<h4>output</h4>
<table class="table">
  <thead>
    <th>page</th>
    <th>match</th>
  </thead>
  {% for key, value in matchcontent.items() %}
  <tr>
    <td>
      <a class="btn btn-link" href="/flatpages/{{key}}">{{key}}</a>
    </td>
    <td>
      {{ value }}
    </td>
  </tr>
  {% endfor %}

</table>

<!-- /Start your project here-->

{% endblock %}

views.py

@blueprint.route('/search/', methods=['GET','POST'])
@login_required
def searchflats():
    # thisdir = os.path.abspath(os.path.dirname(__file__))
    # pagedir = os.path.abspath(os.path.join(thisdir, os.pardir, 'pages'))
    # location = pagedir
    # location = FLATPAGES_ROOT
    # above didn't work hard coding path for now
    location = 'C:/Users/yourusername/flaskappdir/pages/' # yuk i'm on win32
    matches = {}
    matchcontent = {}
    form = SearchFlatsForm(request.form, csrf_enabled=False)
    if form.validate_on_submit():
        searchterm = form.searchterm.data
        for dir_path, dirs, file_names in os.walk(location):
            for file_name in file_names:
                fullpath = os.path.join(dir_path, file_name)
                with open(fullpath,encoding='utf-8',errors='ignore') as f:
                    print(fullpath)
                    content = f.readlines()
                    for c in content:
                        if searchterm in c:
                            fixedpath = fullpath.replace('C:/Users/yourusername/flaskappdir/pages/', '')
                            fixedpath = fixedpath.replace('.md','')
                            matchcontent[fixedpath] = c
                            matches[file_name] = c
        return render_template('flatpages/search.html', form=form, matches=matches, pages=pages,matchcontent=matchcontent)
    else:
        flash_errors(form)
        return render_template('flatpages/search.html', form=form, matches=matches, pages=pages,matchcontent=matchcontent)