Error: [400] Filters contains an invalid set of keys for object inside of field: filters root; can only have clauses or a single field name

[Hayden-NTW]

I'm trying to get filtered result from elastic/app-search.

Below is facets data from first search.

<h3>Brand</h3>
<input type="checkbox" name="brand1" value="brand1">
<input type="checkbox" name="brand2" value="brand2">

<h3>Price</h3>
<input type="checkbox" name="price1" value="price1">
<input type="checkbox" name="price2" value="price2">

When user click any checkbox, the value is contained to product_options's filter.
It's working if filter has one condition like this:

product_options {
    result_fields: {...},
    facets: {...},
    page: {...},
    sort: {...},
    filteres: {
        brand: ["brand1"] 
    }
}

And it still working when there's 2 or more brands. like this:

product_options {
    result_fields: {...},
    facets: {...},
    page: {...},
    sort: {...},
    filteres: {
        brand: ["brand1", "brand2"...] 
    }
}

but, when the filters object has 2 or more conditions in its root, the error occurred like this:

Error: [400] Filters contains an invalid set of keys for object inside of field: filters root; can only have clauses or a single field name

If I want to use multi condition like below:

filters: {
    brand: ["brand1"],
    price: ["price1"]
}

What should I do?

Thank you for reading and helping!

[JasonStoltz (Jason Stoltzfus)]

When applying one filter you can use the shorthand syntax as you have above.

When applying multiple filters, you need to use the full filter syntax documented here: https://swiftype.com/documentation/app-search/api/search/filters#combining-filters

"filters": {
  "all": [
    { "brand": ["brand1"] },
    { "price": ["price1"] }
  ]
]}