Leveraging dual style.bind declarations in Aurelia

I'm facing an issue with utilizing two style.bind in Aurelia as it doesn't seem to be functioning properly. Alternatively, I could attempt using just one style.bind and applying the desired styles, but I am unsure of how to proceed.

Here is the code snippet:

<span repeat.for="source of item.data.sources | sort: 'weight' : 'asc'" 
  if.bind="source.weight" 
  class="weight" 
  style.bind="source.weight | fontWeight" 
  style.bind="source.is_italic && 'font-style: italic;'"
>
  ${source.name}
</span>

The purpose of my fontWeight valueConverter is simply to return the font-weight in CSS format:

export class FontWeightValueConverter {
  toView(weight) {
    return 'font-weight: ' + weight;
  }
}

I opted for this approach because using

style="font-weight: ${ source.weight }"

did not yield the expected results... possibly due to weight being a reserved term?

Ultimately, my goal is to assign the font-weight based on the source.weight value and add font-style: italic; if the is_italic flag is true.

Any suggestions or insights on how to achieve this?

Answer №1

To achieve the desired styling, you can utilize the css attribute in your code. By including string interpolated styles within the value of the css attribute, you can customize the appearance of your elements.

In the specific scenario mentioned, consider implementing the following code snippet:

<span repeat.for="source of item.data.sources | sort: 'weight' : 'asc'" 
  if.bind="source.weight" 
  class="weight" 
  css="font-weight: ${source.weight}; ${source.is_italic ? 'font-style: italic;' : ''}"
>
  ${source.name}
</span>

If you're interested in delving deeper into style binding techniques, I recommend checking out this informative article.

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