Method as_sql

django/contrib/postgres/search.py:484–497

(self, compiler, connection)

        super().__init__(value, output_field=output_field)

    def as_sql(self, compiler, connection):
        param = quote_lexeme(self.value)
        label = ""
        if self.prefix:
            label += "*"
        if self.weight:
            label += self.weight

        if label:
            param = f"{param}:{label}"
        if self.invert:
            param = f"!{param}"

        return "%s", (param,)

    def __invert__(self):
        cloned = self.copy()