Tag field Content relations Query Type

This Query Type is used to build queries that fetch Content tag field relations from selected tag fields of a given Content.

Hint

Tag field Content relations are Content items tagged with a tag contained in a tag field of a given Content.

Hint

This query type assumes Netgen’s TagsBundle is used for tagging functionality.

Identifier SiteAPI:Content/Relations/TagFields
Own conditions
Common Content conditions
Common query parameters

Examples

Your project is a web shop, where Content of type product is tagged with tags that define product’s market. Specific tag field named market is used for that. For example, you could have a wireless keyboard product tagged with market tag components. Various other Content is also tagged with that tag, for example we could have files and articles using that same tag.

On the full view for Content of type product, fetch articles from the same market, sort them by their publication date and paginate them by 10 per page using URL query parameter page:

ezpublish:
    system:
        frontend_group:
            ngcontent_view:
                full:
                    product:
                        template: '@ezdesign/content/full/product.html.twig'
                        match:
                            Identifier\ContentType: product
                        queries:
                            market_articles:
                                query_type: SiteAPI:Content/Relations/TagFields
                                max_per_page: 10
                                page: '@=queryParam("page", 1)'
                                parameters:
                                    relation_field: market
                                    content_type: article
                                    sort: published desc
{% set articles = ng_query( 'market_articles' ) %}

<h3>Related market articles</h3>

<ul>
{% for article in articles %}
    <li>{{ article.name }}</li>
{% endfor %}
</ul>

{{ pagerfanta( articles, 'twitter_bootstrap' ) }}

Own conditions

content

Defines the source (from) relation Content, which is the one containing tag fields.

Note

This condition is required. It’s also automatically set to the Content instance resolved by the view builder if the query is defined in the view builder configuration.

  • value type: Content
  • value format: single
  • operators: none
  • target: none
  • required: true
  • default: not defined

Examples:

# this is also automatically set when using from view builder configuration
location: '@=content'
# fetch relations from Content's main Location parent Location's Content
location: '@=content.mainLocation.parent.content'
# fetch relations from Content's main Location parent Location's parent Location's Content
location: '@=content.mainLocation.parent.parent.content'

exclude_self

Defines whether to include Content defined by the content condition in the result set.

  • value type: boolean
  • value format: single
  • operators: none
  • target: none
  • required: false
  • default: true

Examples:

# do not include the source relation Content, this is also the default behaviour
exclude_self: true
# include the source relation Content
exclude_self: false

relation_field

Defines Content fields to take into account for determining relations.

  • value type: string
  • value format: single, array
  • operators: none
  • target: none
  • required: true
  • default: not defined

Examples:

relation_field: appellation
relation_field: [head, heart, base]

Common Content conditions

content_type

Defines ContentType of the Content by the identifier.

  • value type: string
  • value format: single, array
  • operators: eq, in
  • target: string ContentType identifier
  • required: false
  • default: not defined

Examples:

# identical to the example below
content_type: article
content_type:
    eq: article
# identical to the example below
content_type: [image, video]
content_type:
    in: [image, video]

field

Defines conditions on Content fields.

  • value type: integer, string, boolean
  • value format: single, array
  • operators: eq, in, gt, gte, lt, lte, between, like, contains
  • target: string Field identifier
  • required: false
  • default: not defined

Examples:

field:
    date_field:
        not:
            gt: 'today +5 days'
    price:
        between: [100, 200]
        not: 155

is_field_empty

Defines conditions on whether the Content fields are empty or not.

Note

IsEmptyField criterion is upported only by Solr search engine, so this condition can be used only with the FindService. In order to use it configure the query with parameter use_filter set to false.

  • value type: boolean
  • value format: single
  • operators: eq
  • target: string Field identifier
  • required: false
  • default: not defined

Examples:

is_field_empty:
    image: false
    video: true

publication_date

Defines the publication date of the Content as a timestamp.

  • value type: integer
  • value format: single, array
  • operators: eq, in, gt, gte, lt, lte, between
  • target: none
  • required: false
  • default: not defined

Examples:

# identical to the example below
publication_date: 1535117737
depth:
    eq: 1535117737
# identical to the example below
publication_date: [1435117737, 1535117737]
publication_date:
    in: [1435117737, 1535117737]
# multiple operators are combined with logical AND
publication_date:
    gt: '29 June 1991'
    lte: '5 August 1995'
publication_date:
    gt: 'today'
publication_date:
    between: ['today', '+1 week 2 days 4 hours 2 seconds']

section

Defines Section of the Content by the identifier.

  • value type: string
  • value format: single, array
  • operators: eq, in
  • target: none
  • required: false
  • default: not defined

Examples:

# identical to the example below
section: standard
section:
    eq: standard
# identical to the example below
section: [standard, restricted]
section:
    in: [standard, restricted]

state

Defines ObjectState of the Content by the ObjectStateGroup and ObjectState identifiers.

Note

Content can only exist in single ObjectState from the same ObjectStateGroup.

  • value type: string ObjectState identifier
  • value format: single
  • operators: eq
  • target: string ObjectStateGroup identifier
  • required: false
  • default: not defined

Examples:

# identical to the example below
state:
    ez_lock: not_locked
state:
    ez_lock:
        eq: not_locked
# multiple states are combined with logical AND
# identical to the example below
state:
    ez_lock: locked
    approval: rejected
state:
    ez_lock:
        eq: locked
    approval:
        eq: rejected

Common query parameters

limit

Defines the maximum number of items to return.

Note

This parameter will not be used if you execute the query from Twig using ng_query function. In that case Pargerfanta pager is used with semantic parameters page and max_per_page. To execute the query directly use ng_raw_query Twig function instead.

  • value type: integer
  • value format: single
  • required: false
  • default: 25

Examples:

limit: 10

offset

Defines the offset for search hits, used for paging the results.

Note

This parameter will not be used if you execute the query from Twig using ng_query function. In that case Pargerfanta pager is used with semantic parameters page and max_per_page. To execute the query directly use ng_raw_query Twig function instead.

  • value type: integer
  • value format: single
  • required: false
  • default: 0

Examples:

offset: 20

sort

  • value type: string, SortClause
  • value format: single, array
  • required: false
  • default: not defined

Here you can use any SortClause implementation. However, if you define the query in the view configuration, you won’t be able to instantiate the SortClause there. For that reason we provide a way to define the sort clause as a string instead. We this format a subset of commonly used SortClauses is supported. Sort direction is defined as asc for ascending and desc for descending. In can be omitted, in which case it will default to asc.

Strings can be used to define multiple sort clauses through an array of definitions:

sort:
    - depth asc
    - modified desc

Following sort clauses are available through string definition:

Location depth

String depth enables sorting by Location’s depth:

sort: depth
sort: depth asc
sort: depth desc

Content Field

String in form of of field/[content_type]/[field] enables sorting by any Content Field. For example by Field with identifier title in ContentType with identifier article:

sort: field/article/title
sort: field/article/title asc
sort: field/article/title desc

Content modification date

String modified enables sorting by the Content modification date:

sort: modified
sort: modified asc
sort: modified desc

Content name

String name enables sorting by the Content name:

sort: name
sort: name asc
sort: name desc

Location priority

String priority enables sorting by the Location priority:

sort: priority
sort: priority asc
sort: priority desc

Content publication date

String published enables sorting by the Content publication/creation date:

sort: published
sort: published asc
sort: published desc