[feature] Added setting to set the DEFAULT_CHART_TIME

README.rst

@@ -2088,6 +2088,20 @@ In case you just want to change the colors used in a chart here's how to do it:
  }
  }
 
+``OPENWISP_MONITORING_DEFAULT_CHART_TIME``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
++---------------------+---------------------------------------------+
+| **type**: | ``str`` |
++---------------------+---------------------------------------------+
+| **default**: | ``7d`` |
++---------------------+---------------------------------------------+
+| **possible values** | ``1d``, ``3d``, ``7d``, ``30d`` or ``365d`` |
++---------------------+---------------------------------------------+
+
+This setting allows you to set the default time period for showing
+charts.
+
 ``OPENWISP_MONITORING_AUTO_CLEAR_MANAGEMENT_IP``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

openwisp_monitoring/monitoring/base/models.py

@@ -25,7 +25,7 @@
 from openwisp_utils.base import TimeStampedEditableModel
 
 from ...db import default_chart_query, timeseries_db
-from ...settings import CACHE_TIMEOUT
+from ...settings import CACHE_TIMEOUT, DEFAULT_CHART_TIME
 from ..configuration import (
  CHART_CONFIGURATION_CHOICES,
  DEFAULT_COLORS,
@@ -495,7 +495,7 @@ class AbstractChart(TimeStampedEditableModel):
  max_length=16, null=True, choices=CHART_CONFIGURATION_CHOICES
  )
  GROUP_MAP = {'1d': '10m', '3d': '20m', '7d': '1h', '30d': '24h', '365d': '7d'}
- DEFAULT_TIME = '7d'
+ DEFAULT_TIME = DEFAULT_CHART_TIME
 
  class Meta:
  abstract = True

openwisp_monitoring/settings.py

@@ -28,3 +28,4 @@ def get_settings_value(option, default=None):
  'CACHE_TIMEOUT',
  24 * 60 * 60, # 24 hours in seconds
 )
+DEFAULT_CHART_TIME = get_settings_value('DEFAULT_CHART_TIME', '7d')