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from docutils.core import publish_parts |
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from flask import Flask, render_template, Blueprint, request |
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from groundwork.patterns import GwCommandsPattern |
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from groundwork_web.patterns import GwWebPattern |
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from groundwork_web.patterns.gw_web_pattern.provider import BaseProvider |
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class GwWebFlask(GwWebPattern, GwCommandsPattern): |
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def __init__(self, *args, **kwargs): |
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self.name = kwargs.get("name", self.__class__.__name__) |
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super().__init__(*args, **kwargs) |
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self.flask_app = None |
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def activate(self): |
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self.flask_app = Flask(__name__) |
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# Inject send_signal() to jinja templates |
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# Use it like {{ send_signal("my_signal") }} |
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self.flask_app.jinja_env.globals.update(send_signal=self.signals.send) |
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self.flask_app.jinja_env.globals.update(get_menu=self.__get_menu) |
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self.flask_app.jinja_env.globals.update(get_config=self.app.config.get) |
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self.flask_app.jinja_env.globals.update(rst2html=self.__rst2html) |
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# self.signals.register("web_menu", "signal to retrieve entries for the web menu") |
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# self.signals.connect("test", "test_web", blub, description="test web signal") |
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self.web.providers.register("flask", FlaskProvider(self.flask_app), "Flask web provider") |
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self.web.servers.register("flask_debug", self.__start_flask_debug_server, "Starts the flask debug server") |
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def deactivate(self): |
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self.flask_app = None |
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def __start_flask_debug_server(self): |
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self.flask_app.run() |
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def __get_menu(self, cluster="base"): |
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return self.web.menus.get(cluster=cluster) |
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def __rst2html(self, document, part="body"): |
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if document is not None and type(document) == str: |
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doc_rendered = publish_parts(document, writer_name="html") |
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if part not in doc_rendered.keys(): |
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raise KeyError("%s is not a valid key for part parameter of rst2html.\nValid options: " % |
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(part, ",".join(doc_rendered.keys()))) |
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return doc_rendered[part] |
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return document |
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class FlaskProvider(BaseProvider): |
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def __init__(self, instance, *args, **kwargs): |
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self.flask_app = instance |
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self.blueprints = {} |
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self.request = request |
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def register_route(self, url, methods, endpoint, context, *arg, **kwargs): |
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if context not in self.blueprints.keys(): |
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raise NameError("Context %s does not exist" % context) |
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blueprint = self.blueprints[context] |
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blueprint.add_url_rule(url, methods=methods, endpoint=endpoint.__name__, view_func=endpoint) |
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# We have to register our blueprint to activate the route |
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self.flask_app.register_blueprint(blueprint) |
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def register_context(self, name, template_folder, static_folder, url_prefix, overwrite=False, *arg, **kwargs): |
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if name in self.blueprints.keys() and not overwrite: |
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raise NameError("Context %s already exists" % name) |
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blueprint = Blueprint(name, __name__, |
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url_prefix=url_prefix, |
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subdomain=None, |
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template_folder=template_folder, |
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static_folder=static_folder, |
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static_url_path="/static/" + name) |
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self.blueprints[name] = blueprint |
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self.flask_app.register_blueprint(blueprint) |
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def render(self, template, **kwargs): |
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return render_template(template, **kwargs) |
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useblocks /
groundwork-web
