2.7 KiB
Filters
See the filters' concepts for details.
::: tip
by default, the filters can only be used from find endpoints generated by the Content Type Builder and the CLI. If you need to implement a filters system somewhere else, read the programmatic usage section.
:::
Available operators
The available operators are separated in four different categories:
Filters
Easily filter results according to fields values.
=: Equals_ne: Not equals_lt: Lower than_gt: Greater than_lte: Lower than or equal to_gte: Greater than or equal to_contains: Contains_containss: Contains case sensitive_in: Matches any value in the array of values_nin: Doesn't match any value in the array of values
Examples
Find users having John as first name.
GET /user?firstName=John
Find products having a price equal or greater than 3.
GET /product?price_gte=3
Sort
Sort according to a specific field.
Example
Sort users by email.
- ASC:
GET /user?_sort=email:asc - DESC:
GET /user?_sort=email:desc
Limit
Limit the size of the returned results.
Example
Limit the result length to 30.
GET /user?_limit=30
Start
Skip a specific number of entries (especially useful for pagination).
Example
Get the second page of results.
GET /user?_start=10&_limit=10
Programmatic usage
Requests system can be implemented in custom code sections.
Extracting requests filters
To extract the filters from an JavaScript object or a request, you need to call the strapi.utils.models.convertParams helper.
::: tip The returned objects is formatted according to the ORM used by the model. :::
Example
Path — ./api/user/controllers/User.js.
// Define a list of params.
const params = {
_limit: 20,
_sort: 'email',
};
// Convert params.
const formattedParams = strapi.utils.models.convertParams('user', params); // { limit: 20, sort: 'email' }
Query usage
Example
Path — ./api/user/controllers/User.js.
module.exports = {
find: async (ctx) => {
// Convert params.
const formattedParams = strapi.utils.models.convertParams('user', ctx.request.query);
// Get the list of users according to the request query.
const filteredUsers = await User
.find()
.where(formattedParams.where)
.sort(formattedParams.sort)
.skip(formattedParams.start)
.limit(formattedParams.limit);
// Finally, send the results to the client.
ctx.body = filteredUsers;
};
};