Flask-GoogleCharts ================== .. toctree:: :maxdepth: 2 :caption: Contents: Installation ------------ $ easy_install Flask-GoogleCharts or $ pip install Flask-GoogleCharts Set Up ------ Google charts are controlled through a ``GoogleCharts`` instance:: from flask import Flask from flask_googlecharts import GoogleCharts app = Flask(__name__) charts = GoogleCharts(app) You may also set up the ``GoogleCharts`` instance later using the **init_app** method:: charts = GoogleCharts() app = Flask(__name__) charts.init_app(app) Creating Charts ---------------- Import a chart type and declare it in your view, and give it a name at a minimum:: from flask_googlecharts import BarChart my_chart = BarChart("my_chart") The name you declare will be used to access your chart in the template, and also to name the resulting JavaScript variables and HTML tags, so it must start with a letter and not contain any spaces. You can customize your chart by setting the ``options`` argument:: my_chart = BarChart("my_chart", options={'title': 'My Chart'}) Adding Data to a Chart ---------------------- If you will be pulling JSON data from another endpoint in your application, just specify the url in the ``data_url`` argument:: my_chart = BarChart("my_chart", options={'title': 'My Chart'}, data_url=url_for('data')) You can also populate the chart using the ``addColumn`` and ``addRows`` methods on the chart:: hot_dog_chart.add_column("string", "Competitor") hot_dog_chart.add_column("number", "Hot Dogs") hot_dog_chart.add_rows([["Matthew Stonie", 62], ["Joey Chestnut", 60], ["Eater X", 35.5], ["Erik Denmark", 33], ["Adrian Morgan", 31]]) Including Charts in Templates ----------------------------- First, add the chart javascript to your template::