Filtering array content using contains with a variable value

[donguinesjay]

Hi is there a way to make a condition to check if an array contains a specific variable value?

eg. {{ if { arr_data | in_array:'{title}' } }}

I want to check if the value of title variable is inside the arr_data.

[ryanmitchell]

Did you try:

{{ if arr_data | in_array:title }}

I believe it checks whether a variable with that name exists when you pass a string.

[donguinesjay]

I did try that. But it always says true. As you can see the title variable has a string value. But it always says true to all title value even though the its not actually in the arr_data

[donguinesjay]

Here's the content of arr_data:

And here's all the title value:

I want to only show the existing title that are inside the arr_data. But as you can see, the condition is always saying true, Thus all the title value is showing even though its not existing in the arr_data

Before the What's on it should say Not Found! as its not existing inside the arr_data.

[jasonvarga]

The in_array is backwards from what you want. The value is the needle and you pass the haystack array.
You want the contains modifier. The value is the array haystack and you pass in the needle.

[jasonvarga]

Try {{ if arr | contains:title }}

[donguinesjay]

Thanks, It's working now!