data app with table (#231)

data_visualisation/.gitignore

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+*.db
+*.py[cod]
+.web
+alembic/
+alembic.ini
+reflex.db
+__pycache__/

data_visualisation/Readme.md

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+# Data App
+
+This app is used to showcase and edit tabular data live in an app. 
+
+## Use the app
+
+There are 4 custom database Models defined here `Customer`, `Cereals`, `Covid` and `Countries`. Three of these come with datasets that load data automatically into the table when the app is loaded and the last is an empty table, where the user can add data from scratch. For all of these tables the user can add, edit or delete data and this will update the data in the database itself. The data file types currently supported are `csv`, `xlsx` and `json`, but it is very easy to extend this to any data type by just writing your own `loading_data` function inside of the `data_loading.py` file. There is also in-built sorting based on any column heading. 
+
+
+To use the app, set the `MODEL` parameter to the table of your choice defined in the `models.py` file. If you wish to load data set the `data_file_path` parameter.
+
+
+## Add your own data file
+
+
+You can add your own data by creating an `rx.Model` class in the `models.py` file. It is critical that the names of the `keys` in the model match up EXACTLY to the names of the columns in your data source. Here are some examples:
+
+* Heading: `Name`, key must be `Name` and not `name`
+* Heading: `State/UT`, this name must be changed to something that can be written in python such as `state`.
+* Heading: `people count`, heading must be changed to be `people_count`
+
+You can load other data types by defining your own `loading_data` function inside of the `data_loading.py` file.

data_visualisation/data_sources/cereal.csv

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+name,mfr,type,calories,protein,fat,sodium,fiber,carbo,sugars,potass,vitamins,shelf,weight,cups,rating
+100% Bran,N,C,70,4,1,130,10,5,6,280,25,3,1,0.33,68.402973
+100% Natural Bran,Q,C,120,3,5,15,2,8,8,135,0,3,1,1,33.983679
+All-Bran,K,C,70,4,1,260,9,7,5,320,25,3,1,0.33,59.425505
+All-Bran with Extra Fiber,K,C,50,4,0,140,14,8,0,330,25,3,1,0.5,93.704912
+Almond Delight,R,C,110,2,2,200,1,14,8,-1,25,3,1,0.75,34.384843
+Apple Cinnamon Cheerios,G,C,110,2,2,180,1.5,10.5,10,70,25,1,1,0.75,29.509541
+Apple Jacks,K,C,110,2,0,125,1,11,14,30,25,2,1,1,33.174094
+Basic 4,G,C,130,3,2,210,2,18,8,100,25,3,1.33,0.75,37.038562
+Bran Chex,R,C,90,2,1,200,4,15,6,125,25,1,1,0.67,49.120253
+Bran Flakes,P,C,90,3,0,210,5,13,5,190,25,3,1,0.67,53.313813
+Cap'n'Crunch,Q,C,120,1,2,220,0,12,12,35,25,2,1,0.75,18.042851
+Cheerios,G,C,110,6,2,290,2,17,1,105,25,1,1,1.25,50.764999
+Cinnamon Toast Crunch,G,C,120,1,3,210,0,13,9,45,25,2,1,0.75,19.823573
+Clusters,G,C,110,3,2,140,2,13,7,105,25,3,1,0.5,40.400208
+Cocoa Puffs,G,C,110,1,1,180,0,12,13,55,25,2,1,1,22.736446
+Corn Chex,R,C,110,2,0,280,0,22,3,25,25,1,1,1,41.445019
+Corn Flakes,K,C,100,2,0,290,1,21,2,35,25,1,1,1,45.863324
+Corn Pops,K,C,110,1,0,90,1,13,12,20,25,2,1,1,35.782791
+Count Chocula,G,C,110,1,1,180,0,12,13,65,25,2,1,1,22.396513
+Cracklin' Oat Bran,K,C,110,3,3,140,4,10,7,160,25,3,1,0.5,40.448772
+Cream of Wheat (Quick),N,H,100,3,0,80,1,21,0,-1,0,2,1,1,64.533816
+Crispix,K,C,110,2,0,220,1,21,3,30,25,3,1,1,46.895644
+Crispy Wheat & Raisins,G,C,100,2,1,140,2,11,10,120,25,3,1,0.75,36.176196
+Double Chex,R,C,100,2,0,190,1,18,5,80,25,3,1,0.75,44.330856
+Froot Loops,K,C,110,2,1,125,1,11,13,30,25,2,1,1,32.207582
+Frosted Flakes,K,C,110,1,0,200,1,14,11,25,25,1,1,0.75,31.435973
+Frosted Mini-Wheats,K,C,100,3,0,0,3,14,7,100,25,2,1,0.8,58.345141
+Fruit & Fibre Dates; Walnuts; and Oats,P,C,120,3,2,160,5,12,10,200,25,3,1.25,0.67,40.917047
+Fruitful Bran,K,C,120,3,0,240,5,14,12,190,25,3,1.33,0.67,41.015492
+Fruity Pebbles,P,C,110,1,1,135,0,13,12,25,25,2,1,0.75,28.025765
+Golden Crisp,P,C,100,2,0,45,0,11,15,40,25,1,1,0.88,35.252444
+Golden Grahams,G,C,110,1,1,280,0,15,9,45,25,2,1,0.75,23.804043
+Grape Nuts Flakes,P,C,100,3,1,140,3,15,5,85,25,3,1,0.88,52.076897
+Grape-Nuts,P,C,110,3,0,170,3,17,3,90,25,3,1,0.25,53.371007
+Great Grains Pecan,P,C,120,3,3,75,3,13,4,100,25,3,1,0.33,45.811716
+Honey Graham Ohs,Q,C,120,1,2,220,1,12,11,45,25,2,1,1,21.871292
+Honey Nut Cheerios,G,C,110,3,1,250,1.5,11.5,10,90,25,1,1,0.75,31.072217
+Honey-comb,P,C,110,1,0,180,0,14,11,35,25,1,1,1.33,28.742414
+Just Right Crunchy  Nuggets,K,C,110,2,1,170,1,17,6,60,100,3,1,1,36.523683
+Just Right Fruit & Nut,K,C,140,3,1,170,2,20,9,95,100,3,1.3,0.75,36.471512
+Kix,G,C,110,2,1,260,0,21,3,40,25,2,1,1.5,39.241114
+Life,Q,C,100,4,2,150,2,12,6,95,25,2,1,0.67,45.328074
+Lucky Charms,G,C,110,2,1,180,0,12,12,55,25,2,1,1,26.734515
+Maypo,A,H,100,4,1,0,0,16,3,95,25,2,1,1,54.850917
+Muesli Raisins; Dates; & Almonds,R,C,150,4,3,95,3,16,11,170,25,3,1,1,37.136863
+Muesli Raisins; Peaches; & Pecans,R,C,150,4,3,150,3,16,11,170,25,3,1,1,34.139765
+Mueslix Crispy Blend,K,C,160,3,2,150,3,17,13,160,25,3,1.5,0.67,30.313351
+Multi-Grain Cheerios,G,C,100,2,1,220,2,15,6,90,25,1,1,1,40.105965
+Nut&Honey Crunch,K,C,120,2,1,190,0,15,9,40,25,2,1,0.67,29.924285
+Nutri-Grain Almond-Raisin,K,C,140,3,2,220,3,21,7,130,25,3,1.33,0.67,40.692320
+Nutri-grain Wheat,K,C,90,3,0,170,3,18,2,90,25,3,1,1,59.642837
+Oatmeal Raisin Crisp,G,C,130,3,2,170,1.5,13.5,10,120,25,3,1.25,0.5,30.450843
+Post Nat. Raisin Bran,P,C,120,3,1,200,6,11,14,260,25,3,1.33,0.67,37.840594
+Product 19,K,C,100,3,0,320,1,20,3,45,100,3,1,1,41.503540
+Puffed Rice,Q,C,50,1,0,0,0,13,0,15,0,3,0.5,1,60.756112
+Puffed Wheat,Q,C,50,2,0,0,1,10,0,50,0,3,0.5,1,63.005645
+Quaker Oat Squares,Q,C,100,4,1,135,2,14,6,110,25,3,1,0.5,49.511874
+Quaker Oatmeal,Q,H,100,5,2,0,2.7,-1,-1,110,0,1,1,0.67,50.828392
+Raisin Bran,K,C,120,3,1,210,5,14,12,240,25,2,1.33,0.75,39.259197
+Raisin Nut Bran,G,C,100,3,2,140,2.5,10.5,8,140,25,3,1,0.5,39.703400
+Raisin Squares,K,C,90,2,0,0,2,15,6,110,25,3,1,0.5,55.333142
+Rice Chex,R,C,110,1,0,240,0,23,2,30,25,1,1,1.13,41.998933
+Rice Krispies,K,C,110,2,0,290,0,22,3,35,25,1,1,1,40.560159
+Shredded Wheat,N,C,80,2,0,0,3,16,0,95,0,1,0.83,1,68.235885
+Shredded Wheat 'n'Bran,N,C,90,3,0,0,4,19,0,140,0,1,1,0.67,74.472949
+Shredded Wheat spoon size,N,C,90,3,0,0,3,20,0,120,0,1,1,0.67,72.801787
+Smacks,K,C,110,2,1,70,1,9,15,40,25,2,1,0.75,31.230054
+Special K,K,C,110,6,0,230,1,16,3,55,25,1,1,1,53.131324
+Strawberry Fruit Wheats,N,C,90,2,0,15,3,15,5,90,25,2,1,1,59.363993
+Total Corn Flakes,G,C,110,2,1,200,0,21,3,35,100,3,1,1,38.839746
+Total Raisin Bran,G,C,140,3,1,190,4,15,14,230,100,3,1.5,1,28.592785
+Total Whole Grain,G,C,100,3,1,200,3,16,3,110,100,3,1,1,46.658844
+Triples,G,C,110,2,1,250,0,21,3,60,25,3,1,0.75,39.106174
+Trix,G,C,110,1,1,140,0,13,12,25,25,2,1,1,27.753301
+Wheat Chex,R,C,100,3,1,230,3,17,3,115,25,1,1,0.67,49.787445
+Wheaties,G,C,100,3,1,200,3,17,3,110,25,1,1,1,51.592193
+Wheaties Honey Gold,G,C,110,2,1,200,1,16,8,60,25,1,1,0.75,36.187559