Add document_type facet to Dossiers

[antidipyramid]

Overview

See title.

Closes #136

Demo

Testing Instructions

• Bring up the app locally
• Rebuild your index with docker compose run --rm app python manage.py rebuild_index
• Verify that you can facet on Dossier document type

[xmedr]

I'm having trouble rebuilding the index. I get this error and it prevents me from being able to search dossiers, despite having one with a value in that new field. What do you think?

Indexing 26459 dossiers
Failed to add documents to Solr: Solr responded with an error (HTTP 400): [Reason: ERROR: [doc=docsearch.dossier.3002] unknown field 'document_type']
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/haystack/backends/solr_backend.py", line 76, in update
    self.conn.add(docs, commit=commit, boost=index.get_field_weights())
  File "/usr/local/lib/python3.6/site-packages/pysolr.py", line 918, in add
    overwrite=overwrite, handler=handler)
  File "/usr/local/lib/python3.6/site-packages/pysolr.py", line 500, in _update
    return self._send_request('post', path, message, {'Content-type': 'text/xml; charset=utf-8'})
  File "/usr/local/lib/python3.6/site-packages/pysolr.py", line 412, in _send_request
    raise SolrError(error_message % (resp.status_code, solr_message))
pysolr.SolrError: Solr responded with an error (HTTP 400): [Reason: ERROR: [doc=docsearch.dossier.3002] unknown field 'document_type']
Failed to add documents to Solr: Solr responded with an error (HTTP 400): [Reason: ERROR: [doc=docsearch.dossier.26459] unknown field 'document_type']

[antidipyramid]

@xmedr strange I don't get that error. Have you tried restarting your containers before doing the rebuild?

[xmedr]

I had tried restarting my containers and that didn't work, but I just rebuilt my containers from scratch, and that solved the problem!

All works as expected now

[antidipyramid]

@xmedr Great. I think that warrants some extra testing on staging to make sure this change doesn't do something unexpected.