documentation/content/en/methods/filters.md

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---
title: filters API methods
description: Create and manage filters.
menu:
docs:
weight: 60
name: filters
parent: methods-accounts
identifier: methods-filters
aliases: [
"/methods/filters",
"/api/methods/filters",
"/methods/accounts/filters",
]
---
## Server-side (v2) methods {#v2}
Since Mastodon 3.6, filters can contain multiple keywords and are matched server-side. Clients apply the filter action based on [the status's `filtered` attribute]({{< relref "entities/Status#filtered" >}}).
---
### View all filters {#get}
```http
GET /api/v2/filters HTTP/1.1
```
Obtain a list of all filter groups for the current user.
**Returns:** Array of [Filter]({{< relref "entities/Filter" >}})\
**OAuth:** User token + `read:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
```json
[
{
"id": "20060",
"title": "Remove Twitter crossposts from public timeline",
"context": [
"public"
],
"expires_at": null,
"filter_action": "hide",
"keywords": [
{
"id": "1311",
"keyword": "from birdsite",
"whole_word": true
},
{
"id": "1324",
"keyword": "@twitter.com",
"whole_word": false
},
{
"id": "1325",
"keyword": "https://t.co/",
"whole_word": false
}
],
"statuses": []
},
// ...
]
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
---
### View a specific filter {#get-one}
```http
GET /api/v2/filters/:id HTTP/1.1
```
Obtain a single filter group owned by the current user.
**Returns:** [Filter]({{< relref "entities/Filter" >}})\
**OAuth:** User token + `read:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the Filter in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
```json
{
"id": "20060",
"title": "Remove Twitter crossposts from public timeline",
"context": [
"public"
],
"expires_at": null,
"filter_action": "hide",
"keywords": [
{
"id": "1311",
"keyword": "from birdsite",
"whole_word": true
},
{
"id": "1324",
"keyword": "@twitter.com",
"whole_word": false
},
{
"id": "1325",
"keyword": "https://t.co/",
"whole_word": false
}
],
"statuses": []
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter is not owned by you or does not exist
```json
{
"error": "Record not found"
}
```
---
### Create a filter {#create}
```http
POST /api/v2/filters HTTP/1.1
```
Create a filter group with the given parameters.
**Returns:** [Filter]({{< relref "entities/Filter" >}})\
**OAuth:** User token + `write:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
##### Form data parameters
title
: {{<required>}} String. The name of the filter group.
context[]
: {{<required>}} Array of String. Where the filter should be applied. Specify at least one of `home`, `notifications`, `public`, `thread`, `account`.
filter_action
: String. The policy to be applied when the filter is matched. Specify `warn` or `hide`.
expires_in
: Integer. How many seconds from now should the filter expire?
keywords_attributes[][keyword]
: String. A keyword to be added to the newly-created filter group.
keywords_attributes[][whole_word]
: String. Whether the keyword should consider word boundaries.
<!-- TODO: Remove when https://github.com/mastodon/mastodon/issues/21727 is fixed
keywords_attributes[][id]
: String. Will cause a 404 error if provided.
keywords_attributes[][_destroy]
: Boolean. Will cause the keyword to not be attached if provided.
-->
#### Response
##### 200: OK
Sample of a Filter created by the call:
```text
POST https://mastodon.example/api/v2/filters
?title=test
&context[]=public
&keywords_attributes[][keyword]=foo
&keywords_attributes[][whole_word]=false
&keywords_attributes[][keyword]=bar
&keywords_attributes[][whole_word]=true
```
```json
{
"id": "25933",
"title": "test",
"context": [
"public"
],
"expires_at": null,
"filter_action": "warn",
"keywords": [
{
"id": "34978",
"keyword": "foo",
"whole_word": false
},
{
"id": "34979",
"keyword": "bar",
"whole_word": true
}
],
"statuses": []
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter keyword ID was specified
```json
{
"error": "Record not found"
}
```
##### 422: Unprocessable entity
```json
{
"error": "Validation failed: Title can't be blank, Context can't be blank, Context None or invalid context supplied"
}
```
---
### Update a filter {#update}
```http
PUT /api/v2/filters/:id HTTP/1.1
```
Update a filter group with the given parameters.
**Returns:** [Filter]({{< relref "entities/Filter" >}})\
**OAuth:** User token + `write:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the Filter in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
##### Form data parameters
title
: String. The name of the filter group.
context[]
: Array of String. Where the filter should be applied. Specify at least one of `home`, `notifications`, `public`, `thread`, `account`.
filter_action
: String. The policy to be applied when the filter is matched. Specify `warn` or `hide`.
expires_in
: Integer. How many seconds from now should the filter expire?
keywords_attributes[][keyword]
: String. A keyword to be added to the newly-created filter group.
keywords_attributes[][whole_word]
: String. Whether the keyword should consider word boundaries.
keywords_attributes[][id]
: String. Provide the ID of an existing keyword to modify it, instead of creating a new keyword.
keywords_attributes[][_destroy]
: Boolean. If true, will remove the keyword with the given ID.
#### Response
##### 200: OK
Sample call:
```
PUT /api/v2/filters/25933
?keywords_attributes[][id]=34978
&keywords_attributes[][_destroy]=true
&keywords_attributes[][id]=34979
&keywords_attributes[][keyword]=baz
```
This will remove keyword 34978 ("foo") and will replace keyword 34979 ("bar") with a new keyword ("baz")
```json
{
"id": "25933",
"title": "test",
"context": [
"public"
],
"expires_at": null,
"filter_action": "warn",
"keywords": [
{
"id": "34979",
"keyword": "baz",
"whole_word": true
}
],
"statuses": []
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter is not owned by you or does not exist. Alternatively, `keywords_attributes[][id]` was provided, there is no keyword with given id within this Filter.
```json
{
"error": "Record not found"
}
```
---
### Delete a filter {#delete}
```http
DELETE /api/v2/filters/:id HTTP/1.1
```
Delete a filter group with the given id.
**Returns:** empty object\
**OAuth:** User token + `write:filters`\
**Version history:**\
4.0.0 - added
##### Path parameters
:id
: {{<required>}} String. The ID of the Filter in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
Filter successfully deleted
```json
{}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter is not owned by you or does not exist
```json
{
"error": "Record not found"
}
```
---
### View keywords added to a filter {#keywords-get}
```http
GET /api/v2/filters/:filter_id/keywords HTTP/1.1
```
List all keywords attached to the current filter group.
**Returns:** Array of [FilterKeyword]({{< relref "entities/FilterKeyword" >}})\
**OAuth:** User token + `read:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:filter_id
: {{<required>}} String. The ID of the Filter in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
```json
[
{
"id": "34979",
"keyword": "baz",
"whole_word": true
},
// ...
]
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter is not owned by you, or does not exist
```json
{
"error": "Record not found"
}
```
---
### Add a keyword to a filter {#keywords-create}
```http
POST /api/v2/filters/:filter_id/keywords HTTP/1.1
```
Add the given keyword to the specified filter group
**Returns:** [FilterKeyword]({{< relref "entities/FilterKeyword" >}})\
**OAuth:** User token + `write:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:filter_id
: {{<required>}} String. The ID of the Filter in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
##### Form data parameters
keyword
: {{<required>}} String. The keyword to be added to the filter group.
whole_word
: Boolean. Whether the keyword should consider word boundaries.
#### Response
##### 200: OK
```json
{
"id": "35583",
"keyword": "some",
"whole_word": false
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter is not owned by you, or does not exist
```json
{
"error": "Record not found"
}
```
##### 422: Unprocessable entity
No keyword was provided
```json
{
"error": "Validation failed: Keyword can't be blank"
}
```
---
### View a single keyword {#keywords-get-one}
```http
GET /api/v2/filters/keywords/:id HTTP/1.1
```
Get one filter keyword by the given id.
**Returns:** [FilterKeyword]({{< relref "entities/FilterKeyword" >}})\
**OAuth:** User token + `read:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the FilterKeyword in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
```json
{
"id": "34979",
"keyword": "baz",
"whole_word": true
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter is not owned by you, or the filter or filter keyword does not exist
```json
{
"error": "Record not found"
}
```
---
### Edit a keyword within a filter {#keywords-update}
```http
PUT /api/v2/filters/keywords/:id HTTP/1.1
```
Update the given filter keyword.
**Returns:** [FilterKeyword]({{< relref "entities/FilterKeyword" >}})\
**OAuth:** User token + `write:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the FilterKeyword in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
##### Form data parameters
keyword
: {{<required>}} String. The keyword to be added to the filter group.
whole_word
: Boolean. Whether the keyword should consider word boundaries.
#### Response
##### 200: OK
The keyword "some" was updated to the keyword "other"
```json
{
"id": "35583",
"keyword": "other",
"whole_word": false
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
FilterKeyword is not owned by you, or does not exist
```json
{
"error": "Record not found"
}
```
##### 422: Unprocessable entity
No keyword was provided
```json
{
"error": "Validation failed: Keyword can't be blank"
}
```
---
### Remove keywords from a filter {#keywords-delete}
```http
DELETE /api/v2/filters/keywords/:id HTTP/1.1
```
Deletes the given filter keyword.
**Returns:** empty object\
**OAuth:** User token + `write:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the FilterKeyword in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
FilterKeyword was deleted successfully
```json
{}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
FilterKeyword is not owned by you or does not exist
```json
{
"error": "Record not found"
}
```
---
### View all status filters {#statuses-get}
```http
GET /api/v2/filters/:filter_id/statuses HTTP/1.1
```
Obtain a list of all status filters within this filter group.
**Returns:** Array of [FilterStatus]({{< relref "entities/FilterStatus" >}})\
**OAuth:** User token + `read:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:filter_id
: {{<required>}} String. The ID of the Filter in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
```json
[
{
"id": "897",
"status_id": "109416512469928632"
},
// ...
]
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter is not owned by you or does not exist
```json
{
"error": "Record not found"
}
```
---
### Add a status to a filter group {#statuses-add}
```http
POST /api/v2/filters/:filter_id/statuses HTTP/1.1
```
Add a status filter to the current filter group.
**Returns:** [FilterStatus]({{< relref "entities/FilterStatus" >}})\
**OAuth:** User token + `write:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:filter_id
: {{<required>}} String. The ID of the Filter in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
FilterStatus created successfully within the current Filter
```json
{
"id": "897",
"status_id": "109416512469928632"
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter is not owned by you or does not exist
```json
{
"error": "Record not found"
}
```
---
### View a single status filter {#statuses-get-one}
```http
GET /api/v2/filters/statuses/:id HTTP/1.1
```
Obtain a single status filter.
**Returns:** [FilterStatus]({{< relref "entities/FilterStatus" >}})\
**OAuth:** User token + `read:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the FilterStatus in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
```json
{
"id": "897",
"status_id": "109416512469928632"
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
FilterStatus is not owned by you or does not exist
```json
{
"error": "Record not found"
}
```
---
### Remove a status from a filter group {#statuses-remove}
```http
DELETE /api/v2/filters/statuses/:id HTTP/1.1
```
Add a status filter to the current filter group.
**Returns:** [FilterStatus]({{< relref "entities/FilterStatus" >}})\
**OAuth:** User token + `write:filters`\
**Version history:**\
4.0.0 - added
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the FilterStatus in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
FilterStatus deleted successfully
```json
{}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
FilterStatus is not owned by you or does not exist
```json
{
"error": "Record not found"
}
```
---
## Client-side (v1) methods {#v1}
Prior to Mastodon 3.6, matching filters was done client-size and filters could only contain one phrase to filter against.
---
### View your filters {#get-v1}
```http
GET /api/v1/filters HTTP/1.1
```
**Returns:** List of [V1::Filter]({{< relref "entities/V1_Filter" >}})\
**OAuth:** User token + `read:filters`\
**Version history:**\
2.4.3 - added\
4.0.0 - deprecated. For compatibility purposes, now returns a List of V1::Filter, with each V1::Filter representing one FilterKeyword (with the `keyword` being presented in the `phrase` attribute)
#### Request
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
Excerpts of various filters in different contexts.
```json
[
{
"id": "6191",
"phrase": ":eurovision2019:",
"context": [
"home"
],
"whole_word": true,
"expires_at": "2019-05-21T13:47:31.333Z",
"irreversible": false
},
// ...
{
"id": "5580",
"phrase": "@twitter.com",
"context": [
"home",
"notifications",
"public",
"thread"
],
"whole_word": false,
"expires_at": null,
"irreversible": true
},
// ...
]
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
---
### View a single filter {#get-one-v1}
```http
GET /api/v1/filters/:id HTTP/1.1
```
**Returns:** [V1::Filter]({{< relref "entities/V1_Filter" >}})\
**OAuth:** User token + `read:filters`\
**Version history:**\
2.4.3 - added\
4.0.0 - deprecated. For compatibility purposes, now returns a V1::Filter representing one FilterKeyword (with the `keyword` being presented in the `phrase` attribute)
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the FilterKeyword in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
```json
{
"id": "8449",
"phrase": "test",
"context": [
"home",
"notifications",
"public",
"thread"
],
"whole_word": false,
"expires_at": "2019-11-26T09:08:06.254Z",
"irreversible": true
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter ID does not exist, or is not owned by you
```json
{
"error": "Record not found"
}
```
---
### Create a filter {#create-v1}
```http
POST /api/v1/filters HTTP/1.1
```
**Returns:** [V1::Filter]({{< relref "entities/V1_Filter" >}})\
**OAuth:** User token + `write:filters`\
**Version history:**\
2.4.3 - added\
3.1.0 - added `account` context to filter in profile views\
4.0.0 - deprecated. For compatibility purposes, now returns a V1::Filter representing one FilterKeyword (with the `keyword` being presented in the `phrase` attribute). This method will create a Filter that contains only one FilterKeyword. The `title` of the Filter and the `keyword` of the FilterKeyword will be set equal to the `phrase` provided.
#### Request
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
##### Form data parameters
phrase
: {{<required>}} String. The text to be filtered.
context[]
: {{<required>}} Array of String. Where the filter should be applied. Specify at least one of `home`, `notifications`, `public`, `thread`, `account`.
irreversible
: Boolean. Should the server irreversibly drop matching entities from home and notifications? Defaults to false.
whole_word
: Boolean. Should the filter consider word boundaries for this keyword? Defaults to false.
expires_in
: Integer. Number of seconds from now that the filter should expire. Otherwise, `null` for a filter that doesn't expire.
#### Response
##### 200: OK
The newly-created filter will be returned.
```json
{
"id": "8449",
"phrase": "test",
"context": [
"home",
"notifications",
"public",
"thread"
],
"whole_word": false,
"expires_at": "2019-11-26T09:08:06.254Z",
"irreversible": true
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 422: Unprocessable entity
If phrase is not provided properly:
```json
{
"error": "Validation failed: Phrase can't be blank"
}
```
If context is not provided properly:
```json
{
"error": "Validation failed: Context can't be blank, Context None or invalid context supplied"
}
```
---
### Update a filter {#update-v1}
```http
PUT /api/v1/filters/:id HTTP/1.1
```
Replaces a filter's parameters in-place.
**Returns:** [V1::Filter]({{< relref "entities/V1_Filter" >}})\
**OAuth:** User token + `write:filters`\
**Version history:**\
2.4.3 - added\
3.1.0 - added `account` context to filter in profile views\
4.0.0 - deprecated. or compatibility purposes, now returns a V1::Filter representing one FilterKeyword (with the `keyword` being presented in the `phrase` attribute). This method will return an error if you attempt to change `expires_in`, `irreversible`, or `context` for a filter with multiple keywords. Changing `phrase` and `whole_word` is always safe.
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the FilterKeyword in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
##### Form data parameters
phrase
: {{<required>}} String. The text to be filtered.
context[]
: {{<required>}} Array of String. Specify at least one of `home`, `notifications`, `public`, `thread`, `account`.
irreversible
: Boolean. Should the server irreversibly drop matching entities from home and notifications? Defaults to false.
whole_word
: Boolean. Should the filter consider word boundaries? Defaults to false.
expires_in
: Integer. Number of seconds from now that the filter should expire. Otherwise, `null` for a filter that doesn't expire.
#### Response
##### 200: OK
Filter updated
```json
{
"id": "8449",
"phrase": "test",
"context": [
"home",
"notifications",
"public",
"thread"
],
"whole_word": false,
"expires_at": null,
"irreversible": true
}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter does not exist or is not owned by you
```json
{
"error": "Record not found"
}
```
##### 422: Unprocessable entity
If phrase is not provided properly:
```json
{
"error": "Validation failed: Phrase can't be blank"
}
```
If context is not provided properly:
```json
{
"error": "Validation failed: Context can't be blank, Context None or invalid context supplied"
}
```
---
### Remove a filter {#delete-v1}
```http
DELETE /api/v1/filters/:id HTTP/1.1
```
**Returns:** empty object\
**OAuth:** User token + `write:filters`\
**Version history:**\
2.4.3 - added\
4.0.0 - deprecated. This method will delete only the FilterKeyword from its parent Filter. To delete the parent Filter, you must use the v2 filters API.
#### Request
##### Path parameters
:id
: {{<required>}} String. The ID of the Filter in the database.
##### Headers
Authorization
: {{<required>}} Provide this header with `Bearer <user token>` to gain authorized access to this API method.
#### Response
##### 200: OK
The filter has been deleted successfully, so an empty object will be returned.
```json
{}
```
##### 401: Unauthorized
Invalid or missing Authorization header.
```json
{
"error": "The access token is invalid"
}
```
##### 404: Not found
Filter does not exist or is not owned by you
```json
{
"error": "Record not found"
}
```
---
## See also
{{< page-relref ref="api/guidelines#filters" caption="Implementation guidelines for filters" >}}
{{< caption-link url="https://github.com/mastodon/mastodon/blob/main/app/controllers/api/v2/filters_controller.rb" caption="app/controllers/api/v2/filters_controller.rb" >}}
{{< caption-link url="https://github.com/mastodon/mastodon/blob/main/app/controllers/api/v1/filters/keywords_controller.rb" caption="app/controllers/api/v1/filters/keywords_controller.rb" >}}
{{< caption-link url="https://github.com/mastodon/mastodon/blob/main/app/controllers/api/v1/filters/statuses_controller.rb" caption="app/controllers/api/v1/filters/statuses_controller.rb" >}}
{{< caption-link url="https://github.com/mastodon/mastodon/blob/main/app/controllers/api/v1/filters_controller.rb" caption="app/controllers/api/v1/filters_controller.rb" >}}