More examples / tests (#385)

* More examples / tests

* Fixing the dashboards positioning

caravel/data/__init__.py

@@ -109,6 +109,69 @@ def load_energy():
             """))
     )
 
+    merge_slice(
+        Slice(
+            slice_name="Energy Force Layout",
+            viz_type='directed_force',
+            datasource_type='table',
+            table=tbl,
+            params=textwrap.dedent("""\
+            {
+                "charge": "-500",
+                "collapsed_fieldsets": "",
+                "datasource_id": "1",
+                "datasource_name": "energy_usage",
+                "datasource_type": "table",
+                "flt_col_0": "source",
+                "flt_eq_0": "",
+                "flt_op_0": "in",
+                "groupby": [
+                    "source",
+                    "target"
+                ],
+                "having": "",
+                "link_length": "200",
+                "metric": "sum__value",
+                "row_limit": "5000",
+                "slice_id": "229",
+                "slice_name": "Force",
+                "viz_type": "directed_force",
+                "where": ""
+            }
+            """))
+    )
+    merge_slice(
+        Slice(
+            slice_name="Heatmap",
+            viz_type='heatmap',
+            datasource_type='table',
+            table=tbl,
+            params=textwrap.dedent("""\
+            {
+                "all_columns_x": "source",
+                "all_columns_y": "target",
+                "canvas_image_rendering": "pixelated",
+                "collapsed_fieldsets": "",
+                "datasource_id": "1",
+                "datasource_name": "energy_usage",
+                "datasource_type": "table",
+                "flt_col_0": "source",
+                "flt_eq_0": "",
+                "flt_op_0": "in",
+                "having": "",
+                "linear_color_scheme": "blue_white_yellow",
+                "metric": "sum__value",
+                "normalize_across": "heatmap",
+                "slice_id": "229",
+                "slice_name": "Heatmap",
+                "viz_type": "heatmap",
+                "where": "",
+                "xscale_interval": "1",
+                "yscale_interval": "1"
+            }
+            """))
+    )
+
 
 def load_world_bank_health_n_pop():
     """Loads the world bank health dataset, slices and a dashboard"""
@@ -287,6 +350,23 @@ def load_world_bank_health_n_pop():
                 viz_type='treemap',
                 metrics=["sum__SP_POP_TOTL"],
                 groupby=["region", "country_code"],)),
+        Slice(
+            slice_name="Parallel Coordinates",
+            viz_type='para',
+            datasource_type='table',
+            table=tbl,
+            params=get_slice_json(
+                defaults,
+                since="2011-01-01",
+                until="2011-01-01",
+                viz_type='para',
+                limit=100,
+                metrics=[
+                    "sum__SP_POP_TOTL",
+                    'sum__SP_RUR_TOTL_ZS',
+                    'sum__SH_DYN_AIDS'],
+                secondary_metric='sum__SP_POP_TOTL',
+                series=["country_name"],)),
     ]
     for slc in slices:
         merge_slice(slc)
@@ -379,7 +459,7 @@ def load_world_bank_health_n_pop():
     dash.position_json = json.dumps(l, indent=4)
     dash.slug = "world_health"
 
-    dash.slices = slices
+    dash.slices = slices[:-1]
     db.session.merge(dash)
     db.session.commit()
 
@@ -569,16 +649,6 @@ def load_birth_names():
                 defaults,
                 viz_type="big_number", granularity="ds",
                 compare_lag="5", compare_suffix="over 5Y")),
-        Slice(
-            slice_name="Number of Girls",
-            viz_type='big_number_total',
-            datasource_type='table',
-            table=tbl,
-            params=get_slice_json(
-                defaults,
-                viz_type="big_number_total", granularity="ds",
-                flt_col_1='gender', flt_eq_1='girl',
-                subheader='total female participants')),
         Slice(
             slice_name="Genders",
             viz_type='pie',
@@ -643,6 +713,16 @@ def load_birth_names():
                 defaults,
                 viz_type="pivot_table", metrics=['sum__num'],
                 groupby=['name'], columns=['state'])),
+        Slice(
+            slice_name="Number of Girls",
+            viz_type='big_number_total',
+            datasource_type='table',
+            table=tbl,
+            params=get_slice_json(
+                defaults,
+                viz_type="big_number_total", granularity="ds",
+                flt_col_1='gender', flt_eq_1='girl',
+                subheader='total female participants')),
     ]
     for slc in slices:
         merge_slice(slc)
@@ -725,6 +805,6 @@ def load_birth_names():
     dash.dashboard_title = "Births"
     dash.position_json = json.dumps(l, indent=4)
     dash.slug = "births"
-    dash.slices = slices
+    dash.slices = slices[:-1]
     db.session.merge(dash)
     db.session.commit()

caravel/models.py

@@ -18,7 +18,7 @@ import requests
 import sqlalchemy as sqla
 import sqlparse
 from dateutil.parser import parse
-from flask import flash, request, g
+from flask import request, g
 from flask.ext.appbuilder import Model
 from flask.ext.appbuilder.models.mixins import AuditMixin
 from pydruid.client import PyDruid
@@ -36,6 +36,7 @@ from sqlalchemy_utils import EncryptedType
 
 from caravel import app, db, get_session, utils
 from caravel.viz import viz_types
+from caravel.utils import flasher
 
 config = app.config
 
@@ -666,8 +667,8 @@ class SqlaTable(Model, Queryable, AuditMixinNullable):
         try:
             table = self.database.get_table(self.table_name, schema=self.schema)
         except Exception as e:
-            flash(str(e))
-            flash(
+            flasher(str(e))
+            flasher(
                 "Table doesn't seem to exist in the specified database, "
                 "couldn't fetch column information", "danger")
             return
@@ -952,9 +953,9 @@ class DruidDatasource(Model, AuditMixinNullable, Queryable):
         if not datasource:
             datasource = cls(datasource_name=name)
             session.add(datasource)
-            logging.info("Adding new datasource [{}]".format(name))
+            flasher("Adding new datasource [{}]".format(name), "success")
         else:
-            logging.info("Refreshing datasource [{}]".format(name))
+            flasher("Refreshing datasource [{}]".format(name), "info")
         datasource.cluster = cluster
 
         cols = datasource.latest_metadata()

caravel/utils.py

@@ -11,12 +11,23 @@ from datetime import datetime
 
 import parsedatetime
 from dateutil.parser import parse
-from flask import Markup
+from flask import flash, Markup
 from flask_appbuilder.security.sqla import models as ab_models
 from markdown import markdown as md
 from sqlalchemy.types import TypeDecorator, TEXT
 
 
+def flasher(msg, severity=None):
+    """Flask's flash if available, logging call if not"""
+    try:
+        flash(msg, severity)
+    except RuntimeError:
+        if severity == 'danger':
+            logging.error(msg)
+        else:
+            logging.info(msg)
+
+
 class memoized(object):  # noqa
 
     """Decorator that caches a function's return value each time it is called

caravel/viz.py

@@ -16,7 +16,7 @@ from collections import OrderedDict, defaultdict
 from datetime import datetime, timedelta
 import pandas as pd
 import numpy as np
-from flask import flash, request, Markup
+from flask import request, Markup
 from markdown import markdown
 from pandas.io.json import dumps
 from six import string_types
@@ -25,6 +25,7 @@ from werkzeug.urls import Href
 
 from caravel import app, utils, cache
 from caravel.forms import FormFactory
+from caravel.utils import flasher
 
 config = app.config
 
@@ -68,8 +69,7 @@ class BaseViz(object):
         if not form.validate():
             for k, v in form.errors.items():
                 if not data.get('json') and not data.get('async'):
-                    logging.error("{}: {}".format(k, " ".join(v)))
-                    flash("{}: {}".format(k, " ".join(v)), 'danger')
+                    flasher("{}: {}".format(k, " ".join(v)), 'danger')
         if previous_viz_type != self.viz_type:
             data = {
                 k: form.data[k]
@@ -197,7 +197,7 @@ class BaseViz(object):
         until = form_data.get("until", "now")
         to_dttm = utils.parse_human_datetime(until)
         if from_dttm > to_dttm:
-            flash("The date range doesn't seem right.", "danger")
+            flasher("The date range doesn't seem right.", "danger")
             from_dttm = to_dttm  # Making them identical to not raise
 
         # extras are used to query elements specific to a datasource type