Categories:

Create a table called “real_estate_categories“, and any document in this table should have the following attributes with the same names and types:

id: String // same value as the document id
photo: String
name: String 
order: String // the category display order

it should look like this on firebase :

Note: make sure that the document id and inner id field have the same value.

Filters:

Create a table called “real_estate_filters“, and any document in this table should have the following attributes with the same names and types:

id: String  // same value as the document id
name: String
options: ArrayList<String> 

it should look like this on firebase

Note: make sure that the document id and inner id field have the same value.