how to make condition statement after dot(.) or before property in any method or class

how to make condition statement after dont(.) or before property in any method or class

for example i have the following

bool a = true ;

    FirebaseFirestore.instance.collection('users')
            .limit(10)
            .where('visible', isEqualTo: true) // here i need to use a? isEqualTo : whereIn
    
             {.............}

or at least

a?.where('visible', isEqualTo: true) : .where('visible', whereIn: [1])
  

     

what is the best way to do it instead of making condition to the whole parent

>Solution :

There is no syntax supporting choosing between two different methods to call on the same receiver inside one expression.

Either:

var query = FirebaseFirestore.instance.collection('users')
            .limit(10);
query = a 
  ? query.where('visible', isEqualTo: true)
  : query.where('visible', whereIn: [1]);
query....the rest...

Alternatively, maybe, since the method you’re calling uses optional parameters, it might accept null as equivalent to not passing an argument.
In that case:

  FirebaseFirestore.instance.collection('users')
      .limit(10)
      .where('visible', isEqualTo: a ? true : null, whereIn: a ? null : [1])
      ...the rest ...