Add the controller source and the class Source.

controllers/plugin_event.py

@@ -2,11 +2,25 @@
 """plugin_event controllers
 
 """
+import json
 import traceback
 import urllib
 
 
-from plugin_event import Graph, List, Metric2D, ReportException
+from gluon.storage import Storage
+from plugin_dbui import Selector, Store
+from plugin_event import (Event,
+                          Graph,
+                          List,
+                          Metric2D,
+                          ReportException,
+                          Source)
+
+
+FIELD_TYPES = {"gridcolumn": "string",
+               "booleancolumn": "boolean",
+               "datecolumn": "date",
+               "numbercolumn": "float"}
 
 
 def grid():
@@ -85,7 +99,17 @@ def metric2d():
 
 def source():
     """Display the content of a source via an ``Ext.grid.Panel``.
-    Value send by the selector are used to filter the content of the source.
+    Values send by the selector are used to filter the content of the source.
 
     """
-    return "Hello"
+    try:
+        report = Source(request.vars.source)
+        store = report.get_store_configuration()
+        grid = report.get_grid_configuration()
+        title = report.get_title()
+
+    except (IndexError, ReportException, TypeError, ValueError):
+        return CODE(traceback.format_exc()).xml()
+
+    response.view = "plugin_event/grid.html"
+    return dict(cfg_store=store, grid=grid, title=title)

modules/plugin_event/__init__.py

@@ -51,7 +51,8 @@ from report_tools import (BaseReport,
                           Graph,
                           List,
                           Metric2D,
-                          ReportException)
+                          ReportException,
+                          Source)
 
 from ui_core import CoreUi
 from ui_report import ReportUi

modules/plugin_event/event.py

@@ -71,7 +71,7 @@ class Event(object):
             raise EventException("Plugin event sources are not configured.")
 
         if name not in sources:
-            raise EventException("The source % is not registered" % name)
+            raise EventException("The source %s is not registered" % name)
 
         return sources[name].func
 

modules/plugin_event/report_tools.py

@@ -6,6 +6,8 @@ import json
 import matplotlib as mpl
 import pandas as pd
 
+
+from dataframes import to_extjs_gridcolumns
 from event import Event
 from gluon import current
 from gluon.storage import Storage
@@ -39,11 +41,18 @@ class ReportException(BaseException):
 
 
 class BaseReport(object):
-    """Base class to build list, metric or graph reports.
+    """Base class to build reports.
+
+    Instantiate the DataFrame either using the config option or the
+    source name. In both user criteria are applied. They are extracted
+    by the selector from the requested variables.
 
     Args:
-        table (gluon.dal.Table): contains the report configuration.
-        id_report (int): identifier of the report in the table.
+        config (gluon.storage.Storage): the report configuration.
+            The argument ``source_name`` has to be defined when
+            the report configuration is empty.
+        source_name (str): name of the source uses to generate the DataFrame.
+            Useful when it is not defined in the report configuration.
 
     **Public attributes**:
         * **config** (*gluon.dal.Row*): configuration for the report
@@ -53,7 +62,7 @@ class BaseReport(object):
         * **grid** (*dict*): configuration of the ``Ext.grid.Panel`` widget
 
     """
-    def __init__(self, table, id_report):
+    def __init__(self, config=Storage(), source_name=None):
 
         virtdb = current.globalenv["virtdb"]
 
@@ -65,18 +74,22 @@ class BaseReport(object):
 
         # ....................................................................
         #
-        # Get the configuration for the metric2d
+        # Get the configuration
         #
-        self.config = config = table[id_report]
+        self.config = config
 
         # ....................................................................
         #
         # Fill the the DataFrame
         #
-        criteria = selector.as_dict()
-        criteria["id_events"] = config.id_events
+        criteria = Storage(selector.as_dict())
+
+        if config.id_events not in (None, ""):
+            criteria.id_events = config.id_events
 
-        func = Event.get_source(config.source)
+        name = (source_name if config.source is None else config.source)
+
+        func = Event.get_source(name)
 
         self.df = df = func(**criteria)
 
@@ -418,7 +431,7 @@ class List(BaseReport):
     def __init__(self, id_list):
 
         db = current.globalenv["db"]
-        BaseReport.__init__(self, db.lists2, id_list)
+        BaseReport.__init__(self, config=db.lists2[id_list])
 
         # ....................................................................
         #
@@ -543,7 +556,7 @@ class Metric2D(BaseReport):
     def __init__(self, id_report):
 
         db = current.globalenv["db"]
-        BaseReport.__init__(self, db.metrics2d2, id_report)
+        BaseReport.__init__(self, config=db.metrics2d2[id_report])
 
         self.is_summary = False
 
@@ -734,3 +747,54 @@ class Metric2D(BaseReport):
                 df1 = pd.concat((df1, dfy.T))
 
         return df1
+
+
+class Source(BaseReport):
+    """Transform the content of the source into configuration for
+    an ``Ext.grid.Panel`` and ``Ext.data.Store`` objects.
+
+    Args:
+        name: name of the source
+
+    Raises:
+        ReportException:
+
+    """
+    def __init__(self, name):
+
+        BaseReport.__init__(self, source_name=name)
+
+        df = self.df
+        self.source_name = name
+
+        # ....................................................................
+        #
+        # Get the configuration for the Ext.grid.Panel
+        #
+        self.grid = grid = Storage(columns=to_extjs_gridcolumns(df, meta=True))
+
+        # ....................................................................
+        #
+        # Get the configuration for the Ext.data.Store
+        #
+        self.store = store = Store(data=[], fields=[], sorters=[])
+
+        for col in grid.columns:
+
+            if "dataIndex" not in col:
+                continue
+
+            cfg = Storage(name=col["dataIndex"],
+                          type=FIELD_TYPES[col["xtype"]])
+
+            store.fields.append(cfg)
+
+        if not df.empty:
+            data = df.to_json(orient="records", date_format="iso")
+            store.data = json.loads(data)
+
+    def get_title(self):
+
+        T = current.T
+        self.config.title = "%s %s" % (T("Source"), self.source_name)
+        return BaseReport.get_title(self)