I have a dash app that rotates through each layout every 5 seconds. I want the data to update once a day at the minimum. I wrote a function UPDATE_DATA() that does that successfully, however no matter what I’ve done I can’t get the data to update without reloading the app.
from dash.dependencies import Input, Output
import csv
import dash
import dash_bootstrap_components as dbc
import dash_core_components as dcc
import dash_html_components as html
import pandas as pd
from sqlConn import DataUtility
import plotly.express as px
# noinspection DuplicatedCode
sql = DataUtility()
conn = 'DSN=keyvanTest;Database=Digitalization;TrustedConnection=yes;MARS_Connection=yes;UID=UserID;PWD=password'
DashboardValues = '''hold lengthy select statement '''
MTTR_MTBF = ''' holds lengthy select statement'''
update_interval = 20
# Change contents every (INTERVAL) seconds
INTERVAL = 5
def SQL_to_CSV(file_name: str, sql_str: str):
df = pd.DataFrame(sql.min_query(sql_str))
file_string = "assets/{}".format(file_name)
df.to_csv(file_string, index=False)
with open(file_string, 'r+') as newFile:
rd = csv.reader(newFile, delimiter=',', quotechar='"')
new_array = []
for row in rd:
new_array.append(row)
return new_array
def UPDATE_DATA():
SQL_to_CSV('test.csv', DashboardValues)
dash_data = pd.read_csv('assets/test.csv')
global so_data
so_data = dash_data['DashboardValues']
global mt_data
mt_data = SQL_to_CSV('MTTR_MTBF.csv', MTTR_MTBF)
UPDATE_DATA()
Total_Time_Scheduled = so_data[0]
Total_Time_Unscheduled = so_data[1]
Total_Time_ScheduledP = so_data[2]
Total_Time_UnscheduledP = so_data[3]
Leading_Scheduled = so_data[4]
Leading_Unscheduled = so_data[5]
MTTR = mt_data[1]
MTBF = mt_data[2]
MTTR_Definition = "This metric is the average time needed to restore an asset to its full operational capabilities " \
"after a loss of function "
MTBF_Definition = "This metric is the average length of operating time between failures for an asset or " \
"component"
colors = {'background': '#4f81bd', 'text': 'white'}
borders = {'border': '2px #073763 solid', 'border-radius': '15px'}
app = dash.Dash(__name__)
# noinspection DuplicatedCode
# app layouts to flip through
PAGES = [
dcc.Tab(label='Tab one', children=[
dbc.Row(html.H1('Hot Mill Maintenance KPI Dashboard (Total Score)'), style={
'height': 100,
'textAlign': 'center',
'color': colors['text'],
'backgroundColor': colors['background'],
'fontSize': 24,
'border': '2px #073763 solid',
'border-radius': '4px'
}, ),
dbc.Row(children=[
html.Span("Leading Indicators",
style={'textAlign': 'left',
'color': colors['text'],
'background': colors['background'],
'fontSize': 60,
'display': 'inline-block',
'margin-left': 150,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px'
}),
html.Span("Lagging Indicators",
style={'textAlign': 'right',
'color': colors['text'],
'background': colors['background'],
'fontSize': 60,
'display': 'inline-block',
'margin-left': 670,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px'
}),
]),
dbc.Row(children=[
html.Span("% Scheduled", style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
html.Span("% Unscheduled", style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
html.Span("% Scheduled", style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 400,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
html.Span("% Unscheduled", style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
]),
dbc.Row(children=[
html.Span(Leading_Scheduled, style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}),
html.Span(Leading_Unscheduled, style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
html.Span(MTTR, style={'textAlign': 'right',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 550,
'border': '4px #073763 solid',
'border-radius': '4px'
}, ),
html.Span(MTBF, style={'textAlign': 'right',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 250,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px'
}, )
]),
html.Div(html.Img(src=app.get_asset_url("NASLogo.jpg"),
style={'height': '25%',
'width': '25%',
}),
style={
'textAlign': 'center'
}
),
]),
dcc.Tab(label='Tab two', children=[
html.Div(children=[
dbc.Row(html.H1('May 2021: Scheduled vs Unscheduled Maintenance'),
style={
'height': 100,
'textAlign': 'center',
'color': colors['text'],
'backgroundColor': colors['background'],
'fontSize': 24,
'border': '2px #073763 solid',
'border-radius': '4px'
}, ),
dbc.Row(children=[
dbc.Col(html.Span("Total Time Hours"),
style={'textAlign': 'left',
'color': colors['text'],
'background': colors['background'],
'fontSize': 60,
'display': 'inline-block',
'margin-left': 200,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px'
}),
dbc.Col(html.Span("Total Time %"),
style={'textAlign': 'right',
'color': colors['text'],
'background': colors['background'],
'fontSize': 60,
'display': 'inline-block',
'margin-left': 700,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px'
}),
], ),
dbc.Row(children=[
html.Span("Scheduled", style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}),
html.Span("Unscheduled", style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
html.Span("% Scheduled", style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 400,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
html.Span("% Unscheduled", style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
]),
dbc.Row(id='row4', children=[
html.Span(Total_Time_Scheduled, style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}),
html.Span(Total_Time_Unscheduled, style={'textAlign': 'center',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 10,
'border': '4px #073763 solid',
'border-radius': '4px',
'width': 350
}, ),
html.Span(Total_Time_ScheduledP, style={'textAlign': 'right',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 550,
'border': '4px #073763 solid',
'border-radius': '4px'
}, ),
html.Span(Total_Time_UnscheduledP, style={'textAlign': 'right',
'color': colors['text'],
'background': colors['background'],
'fontSize': 50,
'display': 'inline-block',
'margin-left': 225,
'margin-top': 10,
'border': '4px #073763 solid',
'border-radius': '4px'
}, )
]),
html.Div(html.Img(src=app.get_asset_url("NASLogo.jpg"),
style={'height': '25%',
'width': '25%',
}),
style={
'textAlign': 'center'
}
),
])
]),
dcc.Tab(label='Tab three', children=[
html.Div(children=
[html.H1('Defining MTTR and MTBF',
style={
'height': 100,
'textAlign': 'center',
'color': colors['text'],
'backgroundColor': colors['background'],
'fontSize': 65,
'border': borders['border'],
'border-radius': borders['border-radius']}),
html.Div("MTTR-Mean Time to Repair:",
style={
'textAlign': 'center',
'color': colors['text'],
'backgroundColor': colors['background'],
'fontSize': 60,
'border': borders['border'],
'border-radius': borders['border-radius'],
'width': 800,
'margin-bottom': 3}),
dcc.Textarea(value=MTTR_Definition,
style={
'fontSize': 50,
'color': colors['text'],
'backgroundColor': colors['background'],
'border': borders['border'],
'border-radius': borders['border-radius'],
'width': '100%', 'height': 150
}),
html.Div("MTBF- Mean Time Between Failure:",
style={
'margin-top': 50,
'textAlign': 'center',
'color': colors['text'],
'backgroundColor': colors['background'],
'fontSize': 60,
'border': borders['border'],
'border-radius': borders['border-radius'],
'width': 1000,
'margin-bottom': 3
}),
dcc.Textarea(
value=MTBF_Definition,
style={
'fontSize': 50,
'color': colors['text'],
'backgroundColor': colors['background'],
'border': borders['border'],
'border-radius': borders['border-radius'],
'width': '100%', 'height': 150
}),
],
)
]),
dcc.Tab(label='Tab Four', children=[
html.Div(children=[
dbc.Row(dbc.Col(html.H1('Mean Time to Repair(MTTR): Mechanical Only May 2021')),
style={
'height': 100,
'textAlign': 'center',
'color': colors['text'],
'backgroundColor': colors['background'],
'fontSize': 24,
'border': '2px #073763 solid',
'border-radius': '4px'
}, ),
dbc.Row(dbc.Col(dcc.Graph(
id='Graph',
figure=px.bar(figure_df, y='MeanTime', x='OpCodeGroupCode',
title='testing',
)
)
),
)
])
]),
dcc.Tab(label='Tab Five', children=[
dcc.Graph(
figure={
'data': [
{'x': [1, 5, 3], 'y': [2, 4, 3],
'type': 'line', 'name': 'SF'},
{'x': [1, 2, 3], 'y': [5, 4, 3],
'type': 'line', 'name': u'Montréal'},
]
}
)
]),
]
# app.config.suppress_callback_exceptions = True
app.layout = html.Div(children=[
html.Div(id='app-container'),
dcc.Interval(
id='interval1',
interval=INTERVAL * 1000, # in milliseconds
n_intervals=0
),
], )
@app.callback(Output('app-container', 'children'),
[Input('interval1', 'n_intervals')])
def CHANGE_PAGE(n_intervals):
return PAGES[n_intervals % len(PAGES)]
if __name__ == '__main__':
app.run_server(debug=True)
2 posts - 2 participants
