我想在我的插件中覆盖 ckan 的 url 验证器。我遵循了教程 ( https://github.com/ckan/ckan/tree/master/ckanext/example_idatasetform ),我的插件是这样的:
import logging
import ckan.plugins as plugins
import ckan.plugins.toolkit as toolkit
def custom_url_validator(key, data, errors, context):
''' Checks that the provided value is a valid URL '''
import urlparse
import string
model = context['model']
session = context['session']
url = data.get(key, None)
if not url:
return
pieces = urlparse.urlparse(url)
if all([pieces.scheme, pieces.netloc]) and \
set(pieces.netloc) <= set(string.letters + string.digits + '-.:') and \
pieces.scheme in ['http', 'https']:
return
errors[key].append(_('Custom: Please provide a valid URL'))
class MyPlugin(plugins.SingletonPlugin, toolkit.DefaultDatasetForm):
plugins.implements(plugins.IConfigurer)
plugins.implements(plugins.IDatasetForm)
# IConfigurer
def update_config(self, config_):
toolkit.add_template_directory(config_, 'templates')
toolkit.add_public_directory(config_, 'public')
""" Redefine if this plugin is a default fallback"""
def is_fallback(self):
# Return True to register this plugin as the default handler for
# package types not handled by any other IDatasetForm plugin.
return True
""" Define package types this plugin should be used for has to overwritten because of TODO"""
def package_types(self):
# This plugin doesn't handle any special package types, it just
# registers itself as the default (above).
return []
def _modify_package_schema(self, schema):
schema.update({
# Custom extras
'image_url':[toolkit.get_validator('ignore_missing'), unicode, custom_url_validator]
})
schema.update({
# Custom extras
'url':[toolkit.get_validator('ignore_missing'), unicode, custom_url_validator]
})
return schema
def create_package_schema(self):
schema = super(MyPlugin, self).create_package_schema()
schema = self._modify_package_schema(schema)
return schema
def update_package_schema(self):
schema = super(MyPlugin, self).update_package_schema()
schema = self._modify_package_schema(schema)
return schema
def show_package_schema(self):
schema = super(MyPlugin, self).show_package_schema()
schema.update({
# Custom extras
# Yes, we really do need validators on show, or CKAN crashes
'image_url':[toolkit.get_validator('ignore_missing'), unicode, custom_url_validator]
})
schema.update({
# Custom extras
# Yes, we really do need validators on show, or CKAN crashes
'url':[toolkit.get_validator('ignore_missing'), unicode, custom_url_validator]
})
return schema
我没有让它工作。我还需要做其他事情吗?
最佳答案
当您创建或更新包(数据集)时,您已将此新验证器插入到包 架构中。但是,您正在使用 related_create API 调用,它会创建一个相关对象,解释为什么它不使用您的包验证器。
顺便说一句,我们一个月前在列表中宣布“相关”已弃用,将在下一个版本 (CKAN 2.5) 中删除,因此您应该过渡到 ckanext-showcase。
但是,您的 custom_url_validator 听起来像是对资源 URL 的可喜改进,并鼓励您继续为此进行 PR。
关于python - 覆盖 CKAN 中的 url 验证器,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33151215/