1 # -*- coding: utf-8 -*-

     2 

     3 from django.shortcuts import render_to_response, redirect

     4 from django.template import RequestContext

     5 from hdabo.models import Datasheet, TaggedSheet

     6 import re

     7 import django.utils.simplejson as json

     8 

     9 def datasheet(request, hda_id=None):

    10     MAX_TAG = 15

    11     MAX_RELATED = 50

    12     

    13     datasheet = Datasheet.objects.select_related("organisation").get(hda_id=hda_id)

    14     

    15     domain = re.findall(r"^https?://(www\.)?([^/]+)",datasheet.url)

    16     ordered_tags = TaggedSheet.objects.filter(datasheet=datasheet,order__lte=MAX_TAG).select_related("tag").order_by('order')

    17     tags = [t.tag.id for t in ordered_tags]

    18     tagorders = dict([(t.tag.id,t.order) for t in ordered_tags])

    19     tsqs = TaggedSheet.objects.exclude(datasheet=datasheet).filter(order__lte=MAX_TAG,tag_id__in=tags)

    20     dsscores = {}

    21     addtoscore = 2*MAX_TAG

    22     

    23     for ts in tsqs:

    24         a_order = tagorders[ts.tag_id]

    25         b_order = ts.order

    26         score = addtoscore - a_order - b_order

    27         dsscore = dsscores.get(ts.datasheet_id,0)

    28         dsscores[ts.datasheet_id] = dsscore + score

    29     relatedqs = Datasheet.objects.filter(id__in=dsscores.keys()).select_related("organisation")

    30     relatedds = [{

    31         'id': ds.id,

    32         'hda_id': ds.hda_id,

    33         'title': ds.title,

    34         'description': ds.description,

    35         'organisation_name': ds.organisation.name,

    36         'organisation_url': ds.organisation.website,

    37         'score': dsscores.get(ds.id,0),

    38     } for ds in relatedqs]

    39     relatedds = sorted(relatedds, key=lambda ds: -ds['score'])[:MAX_RELATED]

    40     

    41     for ds in relatedds:

    42         otqs = TaggedSheet.objects.filter(datasheet_id=ds['id'],order__lte=MAX_TAG).select_related("tag").order_by('order')

    43         ds['ordered_tags'] = [{

    44             'id': t.tag.id,

    45             'label': t.tag.label,

    46             'order': t.order,

    47             'common' : (t.tag.id in tags)

    48         } for t in otqs]

    49     

    50     return render_to_response(

    51         "notice.html",

    52         {

    53             'datasheet':datasheet,

    54             'domain': domain[0][1] if domain else "",

    55             'ordered_tags': ordered_tags,

    56             'related': relatedds,

    57         },

    58         context_instance=RequestContext(request)

    59     )