--- a/ckanext/example/forms.py +++ b/ckanext/example/forms.py @@ -1,22 +1,29 @@ -import os, logging +import os +import logging +from pylons import tmpl_context as c from ckan.authz import Authorizer from ckan.logic.converters import convert_to_extras,\ convert_from_extras, convert_to_tags, convert_from_tags, free_tags_only -from ckan.logic import get_action +from ckan.logic import get_action, NotFound from ckan.logic.schema import package_form_schema, group_form_schema from ckan.lib.base import c, model -from ckan.plugins import IDatasetForm, IGroupForm, IConfigurer, IConfigurable +from ckan.plugins import IDatasetForm, IGroupForm, IConfigurer +from ckan.plugins import IGenshiStreamFilter from ckan.plugins import implements, SingletonPlugin -from ckan.lib.navl.validators import ignore_missing, not_empty, keep_extras +from ckan.lib.navl.validators import ignore_missing, keep_extras log = logging.getLogger(__name__) + +GENRE_VOCAB = u'genre_vocab' +COMPOSER_VOCAB = u'composer_vocab' + class ExampleGroupForm(SingletonPlugin): """This plugin demonstrates how a class packaged as a CKAN extension might extend CKAN behaviour by providing custom forms based on the type of a Group. - In this case, we implement two extension interfaces to provide custom + In this case, we implement two extension interfaces to provide custom forms for specific types of group. - ``IConfigurer`` allows us to override configuration normally @@ -29,7 +36,7 @@ class will be used. """ implements(IGroupForm, inherit=True) - implements(IConfigurer, inherit=True) + implements(IConfigurer, inherit=True) def update_config(self, config): """ @@ -47,7 +54,7 @@ """ Returns a string representing the location of the template to be rendered. e.g. "forms/group_form.html". - """ + """ return 'forms/group_form.html' def group_types(self): @@ -110,13 +117,13 @@ found in the ``ini``-file. Here we use it to specify where the form templates can be found. - ``IDatasetForm`` allows us to provide a custom form for a dataset - based on the type_name that may be set for a package. Where the - type_name matches one of the values in package_types then this - class will be used. + based on the type_name that may be set for a package. Where the + type_name matches one of the values in package_types then this + class will be used. """ implements(IDatasetForm, inherit=True) implements(IConfigurer, inherit=True) - implements(IConfigurable) + implements(IGenshiStreamFilter, inherit=True) def update_config(self, config): """ @@ -130,30 +137,11 @@ config['extra_template_paths'] = ','.join([template_dir, config.get('extra_template_paths', '')]) - def configure(self, config): - """ - Adds our new vocabulary to the database if it doesn't - already exist. - """ - self.vocab_name = u'example_vocab' - v = model.Vocabulary.get(self.vocab_name) - if not v: - log.info("Adding vocab %s" % self.vocab_name) - vocab = model.Vocabulary(self.vocab_name) - model.Session.add(vocab) - model.Session.commit() - log.info("Adding example tags to vocab %s" % self.vocab_name) - vocab_tag_1 = model.Tag('vocab-tag-example-1', vocab.id) - vocab_tag_2 = model.Tag('vocab-tag-example-2', vocab.id) - model.Session.add(vocab_tag_1) - model.Session.add(vocab_tag_2) - model.Session.commit() - def package_form(self): """ Returns a string representing the location of the template to be rendered. e.g. "package/new_package_form.html". - """ + """ return 'forms/dataset_form.html' def is_fallback(self): @@ -161,7 +149,7 @@ Returns true iff this provides the fallback behaviour, when no other plugin instance matches a package's type. - As this is not the fallback controller we should return False. If + As this is not the fallback controller we should return False. If we were wanting to act as the fallback, we'd return True """ return True @@ -183,12 +171,17 @@ """ Adds variables to c just prior to the template being rendered that can then be used within the form - """ + """ c.licences = [('', '')] + model.Package.get_license_options() c.publishers = [('Example publisher', 'Example publisher 2')] c.is_sysadmin = Authorizer().is_sysadmin(c.user) c.resource_columns = model.Resource.get_columns() - c.vocab_tags = get_action('tag_list')(context, {'vocabulary_name': self.vocab_name}) + try: + c.genre_tags = get_action('tag_list')(context, {'vocabulary_id': GENRE_VOCAB}) + c.composer_tags = get_action('tag_list')(context, {'vocabulary_id': COMPOSER_VOCAB}) + except NotFound: + c.vocab_tags = None + c.composer_tags = None ## This is messy as auths take domain object not data_dict pkg = context.get('package') or c.pkg @@ -203,8 +196,9 @@ """ schema = package_form_schema() schema.update({ - 'published_by': [not_empty, unicode, convert_to_extras], - 'vocab_tags': [ignore_missing, convert_to_tags(self.vocab_name)], + 'published_by': [ignore_missing, unicode, convert_to_extras], + 'genre_tags': [ignore_missing, convert_to_tags(GENRE_VOCAB)], + 'composer_tags': [ignore_missing, convert_to_tags(COMPOSER_VOCAB)] }) return schema @@ -218,7 +212,12 @@ 'tags': { '__extras': [keep_extras, free_tags_only] }, - 'vocab_tags_selected': [convert_from_tags(self.vocab_name), ignore_missing], + 'genre_tags_selected': [ + convert_from_tags(GENRE_VOCAB), ignore_missing + ], + 'composer_tags_selected': [ + convert_from_tags(COMPOSER_VOCAB), ignore_missing + ], 'published_by': [convert_from_extras, ignore_missing], }) return schema @@ -229,4 +228,34 @@ """ return - + def filter(self, stream): + # Add vocab tags to the bottom of the sidebar. + from pylons import request + from genshi.filters import Transformer + from genshi.input import HTML + routes = request.environ.get('pylons.routes_dict') + context = {'model': model} + if routes.get('controller') == 'package' \ + and routes.get('action') == 'read': + for vocab in (GENRE_VOCAB, COMPOSER_VOCAB): + try: + vocab = get_action('vocabulary_show')(context, {'id': vocab}) + vocab_tags = [t for t in c.pkg_dict.get('tags', []) + if t.get('vocabulary_id') == vocab['id']] + except NotFound: + vocab_tags = None + + if not vocab_tags: + continue + + html = '
  • ' + html = html + '

    %s

    ' % vocab['name'] + html = html + '
    • " + stream = stream | Transformer( + "//div[@id='sidebar']//ul[@class='widget-list']" + ).append(HTML(html)) + return stream +