Laravel : Search by min and max value from the table - laravel

Question

I am confuse about search with min-max value.In my posts table there is a two field min_price and max_price, on my search there is a couple of thing which I need to covered in search query.
If user search with only max_value, it shows all the posts which price is less than or equal to max_value.
If user search with only min_value, it shows all the posts which price is less than or equal to min_value.
If user search with min_value and max_value, it shows all the posts which price is between min_value and max_value.
If both null, return all posts.
How can I do this ?
My code:
$searchablePost = Post::with(['product','postattribute.attribute.category','user.userDetails'])
->whereIn('product_id', $userApprovalProductIDs)
->whereIn('demand_or_supply', $demand_or_supply);
// skip my search query code
$searchedPost = $searchablePost->offset($offset)->limit($limit)->orderBy('id','desc')->get();
How can I do t

Answer 1

Check:
1. if both (min & max values) are available (i.e. not null):
2. if min value is available:
3. if max value is available:
// if none of them is null
if (! (is_null($min_value) && is_null($max_value))) {
// fetch all between min & max values
$searchablePost = $searchablePost->whereBetween('price', [$min_value, $max_value]);
}
// if just min_value is available (is not null)
elseif (! is_null($min_value)) {
// fetch all greater than or equal to min_value
$searchablePost = $searchablePost->where('price', '>=', $min_value);
}
// if just max_value is available (is not null)
elseif (! is_null($max_value)) {
// fetch all lesser than or equal to max_value
$searchablePost = $searchablePost->where('price', '<=', $max_value);
}
If you have separate fields for min_price & max_price, as mentioned in comment, just change the code as following:
if (! (is_null($min_value) && is_null($max_value))) {
$searchablePost = $searchablePost
->where('min_price', '>=', $min_value)
->where('max_price', '<=', $max_value);
}
elseif (! is_null($min_value)) {
$searchablePost = $searchablePost->where('min_price', '>=', $min_value);
}
elseif (! is_null($max_value)) {
$searchablePost = $searchablePost->where('max_price', '<=', $max_value);
}

Answer 2

You can set $min = 0; and $max = infinite_choosen_number; and append whereBetween method to your query, like the below code:
$searchablePost = Post::with(['product','postattribute.attribute.category','user.userDetails'])
->whereIn('product_id', $userApprovalProductIDs)
->whereIn('demand_or_supply', $demand_or_supply)
->whereBetween('price', ["$min", "$max"])->get();
Reference: https://laravel.com/docs/5.6/queries

Answer 3

You can't do that with a whereIn, you can do that with a where statement.
Something like this
`
$searchablePost = Post::with(['product','postattribute.attribute.category','user.userDetails'])
->whereIn('product_id', $userApprovalProductIDs)
->whereIn('demand_or_supply', $demand_or_supply)
->where('price', '>=', $minPrice)
`
Didn't try it so int might fail but here is the way to do it.