The current pandemic has led to many changes in habits. One of which is that I like to be prepared when I go to the supermarket, especially when doing a big shop. Fine I may not last out the two to three weeks that Zeynep Tufekci flagged early on:

For food, you can just buy two or three weeks’ worth of shelf-stable food that you would eat anyway, and be done; this could include canned food like beans and vegetables, pasta, rice, cereals or oats, oils/fats, nuts and dried fruits. It’s really not that hard because we’re talking two-three weeks, so whatever you get is fine. It doesn’t have to be expensive or super healthy or specialized ready-to-eat meals in camo boxes guaranteed to survive the meteor strike! Rice, beans, salsa, ramen, some sort of cooking oil, oatmeal, nuts and dried or canned fruits and vegetables enough for two weeks can be had at relatively little cost and take up fairly little space.

Zeynep Tufekci https://blogs.scientificamerican.com/observations/preparing-for-coronavirus-to-strike-the-u-s/

However, I at least try and limit how often I go out. That is usually the intent of lockdown measures (Melbourne is currently in its fifth lockdown at the point of writing) used to hammer the virus. One strategy I have used is to be clear about what I might need at the shops split into different sections. As a part of this, I wrote out a list of essential items and have been using this to create the weekly shopping list. Today, I decided to have a go at turning this into a spreadsheet using Google Sheets that I could use to generate the list. Here then are my steps:

List of Items

I started by writing something of a complete list of items. Associated with this, I categorised each item in a separate column. To save from writing each category each time, I created a separate list of unique categories and then used this with data validation to create a dynamic drop-down list. This meant that if I added a new category it would then be added as an option. In a third column, I added a checkbox for each item to be used to produce the weekly list.

Switch the Category

Added to the category, I used the SWITCH formula to create a sort order.

=IFNA(ARRAYFORMULA(SWITCH(B2:B,"Veg",1,"Fruit",2,"Meat",3,"Dairy",4,"Bakery",5,"Sweets",6,"Non",7,"Freezer",8,"Other",9)))

Generating the Summary List

Once the items required were ticked, I wanted a summary that I could copy into a message. My initial iteration was a simple query: =QUERY(Sheet1!A2:D,"SELECT C WHERE D = TRUE ORDER BY A") The problem with this is that it did not put each item on a new line. To fix that, I used the JOIN function and the New Line character.

=JOIN(CHAR(10),QUERY(Sheet1!A2:D,"SELECT C WHERE D = TRUE ORDER BY A"))

Although this put each item on a new line, I then wondered about adding an emoji for each section to break up the information. To do this, I combined the new line and emoji characters, with a separate query for each category.

=""&CHAR(129477)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 1 and D = TRUE"))} &""&CHAR(10)&""&CHAR(10)&""&CHAR(127822)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 2 and D = TRUE"))} &""&CHAR(10)&""&CHAR(10)&""&CHAR(129385)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 3 and D = TRUE"))} &""&CHAR(10)&""&CHAR(10)&""&CHAR(129472)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 4 and D = TRUE"))} &""&CHAR(10)&""&CHAR(10)&""&CHAR(127838)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 5 and D = TRUE"))} &""&CHAR(10)&""&CHAR(10)&""&CHAR(127851)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 6 and D = TRUE"))} &""&CHAR(10)&""&CHAR(10)&""&CHAR(129387)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 7 and D = TRUE"))} &""&CHAR(10)&""&CHAR(10)&""&CHAR(129482)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 8 and D = TRUE"))} &""&CHAR(10)&""&CHAR(10)&""&CHAR(129531)&""&CHAR(10)&""& {JOIN(CHAR(10),QUERY(A2:D,"SELECT C WHERE A = 9 and D = TRUE"))}

Resetting Selections

The last task was to add a script to reset the checkboxes. For this, I added a script via app scripts I found here and created a button as a trigger.

You can make a copy of the whole spreadsheet here.

When it comes to coding, Clive Thompson talks about learning to code by doing something every day and doing so with purpose. Here is another example of a solution that is as much about learning as it is about the solution itself.

Comments and recommendations on improvements welcome.

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Shopping Sheet – Improving the Shopping Process During the Pandemic by Aaron Davis is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.