Mongo REST Query String

REST query string parsing for MongoDB.

Query String Options

Option	Description	Example
$limit	Limit the number of items	?$limit=10
$skip	Skip the given number of items	?$skip=20
$fields	Return only specified fields	?$fields=name,description
$sort	Sort on specified fields	?$sort=name,-description
$count	Return the total count header	?$count
$embed	Embed the specified items	?$embed=owner
$paginate	Return pagination header	?$paginate
$findOne	Return only the first item	?$findOne
$replaceOne	Replace the first item	?$replaceOne

Query String Filtering

Operation	Query String	Mongo Query
field exists	?foo	{ foo: { $exists: true } }
field does not exist	?!foo	{ foo: { $exists: false } }
field equals string	?foo=bar	{ foo: { $eq: 'bar' } }
field does not equal string	?foo!=bar	{ foo: { $ne: 'bar' } }
field greater than string	?foo>10	{ foo: { $gt: '10' } }
field less than string	?foo<10	{ foo: { $lt: '10' } }
field greater than or equal to string	?foo>=10	{ foo: { $gte: '10' } }
field less than or equal to string	?foo<=10	{ foo: { $lte: '10' } }
field contains case-insensitive string	?foo~=bar	{ foo: { $regex: 'bar', $options: 'i' } }
field starts with case-insensitive string	?foo^=bar	{ foo: { $regex: '^bar', $options: 'i' } }
field ends with case-insensitive string	?foo$=bar	{ foo: { $regex: 'bar$', $options: 'i' } }
field contains case-sensitive string	?foo~==bar	{ foo: { $regex: 'bar' } }
field starts with case-sensitive string	?foo^==bar	{ foo: { $regex: '^bar' } }
field ends with case-sensitive string	?foo$==bar	{ foo: { $regex: 'bar$' } }
field equals any of strings	?foo=bar&foo=baz	{ foo: { $in: ['bar','baz'] } }
field does not equal any of strings	?foo!=bar&foo!=baz	{ foo: { $nin: ['bar','baz'] } }
field equals number	?foo#=10	{ foo: { $eq: 10 } }
field does not equal number	?foo#!=10	{ foo: { $ne: 10 } }
field greater than number	?foo#>10	{ foo: { $gt: 10 } }
field less than number	?foo#<10	{ foo: { $lt: 10 } }
field greater than or equal to number	?foo#>=10	{ foo: { $gte: 10 } }
field less than or equal to number	?foo#<=10	{ foo: { $lte: 10 } }
field equals any of numbers	?foo#=10&foo#=20	{ foo: { $in: [10,20] } }
field does not equal any of numbers	?foo#!=10&foo#!=20	{ foo: { $nin: [10,20] } }
field equals boolean	?foo==true	{ foo: { $eq: true } }
field does not equals boolean	?foo!==true	{ foo: { $ne: true } }