How to use a condition in Squib with If or Case?

[LouisDeconinck]

The following code always returns 'No sun' even if the SunUp variable contains 1 or 2. I noticed that this is because data['SunUp'] is always an array. How can I change certain elements on the cards if a certain condition is met? Using ranges (https://squib.readthedocs.io/en/v0.18.0/arrays.html) seems a lot less flexible.

 case data['SunUp']
  when "1"
    png file: 'images/Sun-256.png', x: 300, width: 100, height: :scale
  when "2"
    png file: 'images/Sun-256.png', x: 300, width: 100, height: :scale
    png file: 'images/Sun-256.png', x: 420, width: 100, height: :scale
  else
    text str: 'No sun', x: 300
  end
  
  text str: data['SunUp']

In the example (https://squib.readthedocs.io/en/v0.18.0/arrays.html#examples), this code is used to identify the Thief and Grifter: text range: 0..1, str: 'Thief and Grifter only!!', x: 25, y:200 Wouldn't it be a lot more logical to check if the name of the card matches Thief or Grifter? That way, if the cards change position in your data, the code still works.

Is there any possibility of using case or if when using Squib? If not this would seem like a very useful function.

EDIT: For now I solved the problem by generating new image files for each combination of Sun and other powers my cards can have. This is very inefficient because I have to create images for each combination of 3 elements with 5 varieties. Then I dynamically generate the file name in my spreadsheet. So, still looking for a more elegant solution, even if this did work.

[andymeneely]

You want to apply the conditional on each element of the array, so it needs to be inside of an iterator. I tend to use map a lot more often than ranges. So something like this:

png file: data['SunUp'].map {|s| ... } 

There's an example of doing a different number of images given a number on that array page, starting at line 52.

I've seen some folks use the text and icon embedding. So something like this:

suns = data['SunUp'].map { |s| s.to_i * ":sun:" }
text str: suns, key: ':sun:' do |embed|
  embed.png ...
end

[LouisDeconinck]

This seems like a solution I'll test it out. I also went through one of your projects and it seemed like you used ENV to accomplish the same, what does that do?

[LouisDeconinck]

I'm still struggling with this

png file: data['SunUp'].map {|s| ... } 

How would this work if I nil was a possibility? I tried using:
png file: data['Effect1'].map { |t| "images/#{t.downcase}1.png"}, x: 100, y: 800, width: :scale, height: 150

This gives me the error: "downcase does not work for nil". If I add .compact that results in effects shifting from one card to another card. I just want the script to ignore and not put an image when the value is nil. How to accomplish this?

Is there really no way of adding an if statement to check if certain conditions are met for each iteration over the array?

[andymeneely]

Oops put my response in a separate answer. See below

[andymeneely]

There's always a way!

Ruby's nil has the to_s method and it returns '', so I would do "images/#{t.to_s.downcase}1.png"

Ruby also has the &. operator as well. So t&.downcase would return nil if t was nil. https://ruby-doc.org/core-2.6/doc/syntax/calling_methods_rdoc.html

Either of those options along with the new placeholder option to png would be good.

You can do if-statements inside of map. So things like

data.effect1.map do |e|
  if something
    foo
  else 
    bar
end

Uglier option is the ternary operator... so like data.effect1.map { |e| e.something ? foo : bar }

[LouisDeconinck]

Using the to_s with placeholder method works. As a placeholder, I put a random "a". While it does work, it does not look like clean programming, on top of that, it also throws a bunch of warnings. Any possibility of preventing this?

The if method works as well, but also gives me warnings when it tries to display an image using nil. However, I do not understand that. This is my code:

data['Effect1'].map do |e|
 if data['Effect1'] != nil
  png file: data['Effect1'].map { |t| "images/#{t.to_s.downcase}1.png"}, x: 110, y: 800, width: :scale , height: 150
 end
end

How come, that if Effect1 contains nil it still tries to generate an image? I just want it to skip over it.

Another strange thing I noticed, is that I get this warning about nil, 3 times (3 cards), even though only one card has this as nil.

[LouisDeconinck]

@andymeneely If you would find some time to help me out, that would be great!

[LouisDeconinck]

I did not fully understand how mapping worked, in the example above I did a check on the entire array instead of one element of the array. I should have used e instead of data['Effect1].

The following code did work for me:

png file: data['Effect1'].map { |t| t.nil? ? nil : "images/#{t.to_s.downcase}.png"}, x: 105, y: 800, width: :scale , height: 150