| import os, logging | |
| from ckan.authz import Authorizer | |
| import ckan.logic.action.create as create | |
| import ckan.logic.action.update as update | |
| import ckan.logic.action.get as get | |
| from ckan.logic.converters import date_to_db, date_to_form, convert_to_extras, convert_from_extras | |
| from ckan.logic import NotFound, NotAuthorized, ValidationError | |
| from ckan.logic import tuplize_dict, clean_dict, parse_params | |
| import ckan.logic.schema as default_schema | |
| from ckan.logic.schema import package_form_schema | |
| import ckan.logic.validators as val | |
| from ckan.lib.base import BaseController, render, c, model, abort, request | |
| from ckan.lib.base import redirect, _, config, h | |
| from ckan.lib.package_saver import PackageSaver | |
| from ckan.lib.field_types import DateType, DateConvertError | |
| from ckan.lib.navl.dictization_functions import Invalid | |
| from ckan.lib.navl.dictization_functions import validate, missing | |
| from ckan.lib.navl.dictization_functions import DataError, flatten_dict, unflatten | |
| from ckan.plugins import IDatasetForm, IConfigurer | |
| from ckan.plugins import implements, SingletonPlugin | |
| from ckan.lib.navl.validators import (ignore_missing, | |
| not_empty, | |
| empty, | |
| ignore, | |
| keep_extras, | |
| ) | |
| log = logging.getLogger(__name__) | |
| class ExampleDatasetForm(SingletonPlugin): | |
| """This plugin demonstrates how a theme packaged as a CKAN | |
| extension might extend CKAN behaviour. | |
| In this case, we implement three extension interfaces: | |
| - ``IConfigurer`` allows us to override configuration normally | |
| 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. | |
| """ | |
| implements(IDatasetForm, inherit=True) | |
| implements(IConfigurer, inherit=True) | |
| def update_config(self, config): | |
| """ | |
| This IConfigurer implementation causes CKAN to look in the | |
| ```templates``` directory when looking for the package_form() | |
| """ | |
| here = os.path.dirname(__file__) | |
| rootdir = os.path.dirname(os.path.dirname(here)) | |
| template_dir = os.path.join(rootdir, 'ckanext', | |
| 'example', 'theme', 'templates') | |
| config['extra_template_paths'] = ','.join([template_dir, | |
| config.get('extra_template_paths', '')]) | |
| def package_form(self): | |
| """ | |
| Returns a string representing the location of the template to be | |
| rendered. e.g. "package/new_package_form.html". | |
| """ | |
| return 'controller/package_plugin.html' | |
| def is_fallback(self): | |
| """ | |
| 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 | |
| we were wanting to act as the fallback, we'd return True | |
| """ | |
| return False | |
| def package_types(self): | |
| """ | |
| Returns an iterable of package type strings. | |
| If a request involving a package of one of those types is made, then | |
| this plugin instance will be delegated to. | |
| There must only be one plugin registered to each package type. Any | |
| attempts to register more than one plugin instance to a given package | |
| type will raise an exception at startup. | |
| """ | |
| return ["example"] | |
| def setup_template_variables(self, context, data_dict=None): | |
| """ | |
| 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() | |
| ## This is messy as auths take domain object not data_dict | |
| pkg = context.get('package') or c.pkg | |
| if pkg: | |
| c.auth_for_change_state = Authorizer().am_authorized( | |
| c, model.Action.CHANGE_STATE, pkg) | |
| def form_to_db_schema(self): | |
| """ | |
| Returns the schema for mapping package data from a form to a format | |
| suitable for the database. | |
| """ | |
| schema = { | |
| 'title': [not_empty, unicode], | |
| 'name': [not_empty, unicode, val.name_validator, val.package_name_validator], | |
| 'notes': [not_empty, unicode], | |
| 'date_released': [date_to_db, convert_to_extras], | |
| 'date_updated': [date_to_db, convert_to_extras], | |
| 'date_update_future': [date_to_db, convert_to_extras], | |
| 'url': [unicode], | |
| 'taxonomy_url': [unicode, convert_to_extras], | |
| 'resources': default_schema.default_resource_schema(), | |
| 'published_by': [not_empty, unicode, convert_to_extras], | |
| 'published_via': [ignore_missing, unicode, convert_to_extras], | |
| 'author': [ignore_missing, unicode], | |
| 'author_email': [ignore_missing, unicode], | |
| 'mandate': [ignore_missing, unicode, convert_to_extras], | |
| 'license_id': [ignore_missing, unicode], | |
| 'tag_string': [ignore_missing, val.tag_string_convert], | |
| 'national_statistic': [ignore_missing, convert_to_extras], | |
| 'state': [val.ignore_not_admin, ignore_missing], | |
| 'log_message': [unicode, val.no_http], | |
| '__extras': [ignore], | |
| '__junk': [empty], | |
| } | |
| return schema | |
| def db_to_form_schema(data): | |
| """ | |
| Returns the schema for mapping package data from the database into a | |
| format suitable for the form (optional) | |
| """ | |
| schema = { | |
| 'date_released': [convert_from_extras, ignore_missing, date_to_form], | |
| 'date_updated': [convert_from_extras, ignore_missing, date_to_form], | |
| 'date_update_future': [convert_from_extras, ignore_missing, date_to_form], | |
| 'precision': [convert_from_extras, ignore_missing], | |
| 'taxonomy_url': [convert_from_extras, ignore_missing], | |
| 'resources': default_schema.default_resource_schema(), | |
| 'extras': { | |
| 'key': [], | |
| 'value': [], | |
| '__extras': [keep_extras] | |
| }, | |
| 'tags': { | |
| '__extras': [keep_extras] | |
| }, | |
| 'published_by': [convert_from_extras, ignore_missing], | |
| 'published_via': [convert_from_extras, ignore_missing], | |
| 'mandate': [convert_from_extras, ignore_missing], | |
| 'national_statistic': [convert_from_extras, ignore_missing], | |
| '__extras': [keep_extras], | |
| '__junk': [ignore], | |
| } | |
| return schema | |
| def check_data_dict(self, data_dict): | |
| """ | |
| Check if the return data is correct and raises a DataError if not. | |
| """ | |
| return | |