Contents (OrchardCore.Contents)¶
This module provides Content Management services.
Liquid¶
You can access content items from liquid views and templates by using the Content
property.
By default, you can retrieve content by alias or content item ID.
Other modules (such as Alias
and Autoroute
) allow you to retrieve content by other identifiers.
Loading from an alias¶
{% assign my_content = Content["alias:main-menu"] %}
Aliases can be in various forms, like when using Autoroute, with the slug
prefix.
{% assign my_content = Content["slug:my-blog/my-blog-post"] %}
Aliases are provided by implementing
IContentAliasProvider
.
Loading the latest version of a content item¶
You can use the Latest
property to retrieve the latest version of a content item (whether that's the published version or the latest draft version) by alias:
{% assign my_content = Content.Latest["alias:main-menu"] %}
Loading from a content item id¶
{% assign my_content = Content.ContentItemId["417qsjrgv97e74wvp149h4da53"] %}
When a list of content item ids is available, the content_item_id
filter should be preferred:
{% assign posts = postIds | content_item_id %}
Loading from a content item version id¶
{% assign my_content = Content.ContentItemVersionId["49gq8g6zndfc736x0az3zsp4w3"] %}
Rendering a content item from an alias¶
{% contentitem alias:"alias:test" display_type="Detail" %}
Razor Helper¶
The following methods are available from the Razor helper.
Method | Parameters | Description |
---|---|---|
GetContentItemIdByAliasAsync |
string alias |
Returns the content item id from its alias. |
GetContentItemByAliasAsync |
string alias, bool latest = false |
Loads a content item from its alias, seeking the latest version or not. |
GetContentItemByIdAsync |
string contentItemId, bool latest = false |
Loads a content item from its id, seeking the latest version or not. |
GetContentItemsByIdAsync |
IEnumerable<string> contentItemIds, bool latest = false |
Loads a list of content items by ids, seeking the latest version or not. |
GetContentItemByVersionIdAsync |
string contentItemVersionId |
Loads a content item from its version id. |
The Razor Helper is accessible on the
Orchard
property if the view is using Orchard Core's Razor base class, or by injectingOrchardCore.IOrchardHelper
in all other cases.
GraphQL¶
The contents module provides a feature to provide GraphQL queries for content items. For more information about how to send GraphQL queries, please refer to this section.
Content Type Queries¶
You can use content queries to fetch either a single content item, or a list of content items for a certain content type.
Here, we use the blogPost
query to fetch a list of BlogPost
content items. In the response, we include only the contentItemId
and displayText
of each BlogPost
content item:
query { blogPost { contentItemId displayText } }
We can also query a specific BlogPost
content item using the blogPost
query. Note that we're using the where
argument to select the content item:
query { blosPost(where: { contentItemId: "417qsjrgv97e74wvp149h4da53" }) { contentItemId displayText publishedUtc } }
Available fields¶
These fields are available at the content item level:
Property |
---|
contentItemId |
contentItemVersionId |
contentType |
displayText |
published |
latest |
modifiedUtc |
publishedUtc |
createdUtc |
owner |
author |
In addition, all the content parts can also be retrieved like this:
{ blogPost { displayText autoroutePart { path } } }
Query arguments¶
Different types of query arguments can be composed to filter the results:
- Ordering: Sorting content items by any field value using
orderBy
- Filtering: Selecting content items in a query by scalar or relational filters using
where
- Pagination: Slicing content items in a query using
first
andskip
Ordering¶
When querying all content items of a type you can supply the orderBy
argument for every scalar field of the type: orderBy: { <field>: ASC }
or orderBy: { <field>: DESC }
.
Order the list of all BlogPost
content items ascending by displayText
:
query { blogPost(orderBy: { displayText: ASC }) { contentItemId displayText publishedUtc } }
Order the list of all BlogPost
content items descending by publishedUtc
and then ascending by displayText
:
query { blogPost(orderBy: { publishedUtc: DESC, displayText: ASC }) { contentItemId displayText publishedUtc } }
The field you are ordering by does not have to be selected in the actual query.
It's also not currently possible to order responses by their parts or custom fields.
Filtering¶
When querying all content items of a type you can supply different parameters to the where argument to constrain the data in the response according to your requirements. The available options depend on the scalar and part fields defined on the type in question.
Single Filters¶
If you supply exactly one parameter to the where
argument, the query response will only contain content items that adhere to this constraint.
Multiple filters can be combined using AND
and/or OR
, see below for more details.
Filtering by a publication status¶
By default only the published content items are returned. You can select either DRAFT
, LATEST
or ALL
versions of a content item.
query { blogPost(status: DRAFT) { contentItemId displayText publishedUtc } }
Filtering by a concrete value¶
The easiest way to filter a query response is by supplying a concrete value for a certain field to filter by.
Query all BlogPost
content items with a specific display text:
query { blogPost(where: { displayText: "About" }) { contentItemId } }
Advanced filter criteria¶
Depending on the type of the field you want to filter by, you have access to different advanced criteria you can use to filter your query response.
Query all BlogPost
content items whose displayText
is in a given list of strings:
query { blogPost(where: { displayText_in: ["My biggest Adventure", "My latest Hobbies"] }) { contentItemId displayText publishedUtc } }
Query all BlogPost
content items whose creation date is less than a specific date:
query { blogPost(where: { creationgUtc_lt: "2011-11-13T07:45:00" }) { contentItemId displayText publishedUtc } }
Content Part Filters¶
For content parts, you can define conditions on the part by nesting the according argument in where
.
Query all BlogPost
content items where the autoroutePart
has a specific value in its path
:
query { blogPost(where: { autoroutePart { path_contains: "/about" } }) { contentItemId displayText publishedUtc } }
Combining Multiple Filters¶
You can use the filter combinators OR
, AND
and NOT
to create an arbitrary logical combination of filter conditions:
For an AND
-filter to evaluate to true
, all of the nested conditions have to be true
.
For an OR
-filter to evaluate to true
, at least one of the nested conditions has to be true
.
For a NOT
-filter to evaluate to true
, all of the nested conditions have to be false
.
Using OR
, AND
and NOT
Let's start with an easy example:
Query all BlogPost
content items that are created in 2018
and whose displayText
is in a given list of strings:
query { blogPost(where: { AND: { displayText_in: ["My biggest Adventure", "My latest Hobbies"] }, { publishedUtc_gt: "2018" } }) { contentItemId displayText publishedUtc } }
Arbitrary combination of filters with AND
, OR
and NOT
¶
You can combine and even nest the filter combinators AND
, OR
and NOT
to create arbitrary logical combinations of filter conditions.
Query all BlogPost
content items that are created in 2018
and whose displayText
is in a given list of strings, or have the specific contentItemId
we supply:
query { blogPost(where: { OR: { AND: { displayText_in: ["My biggest Adventure", "My latest Hobbies"], publishedUtc_gt: "2018" }, contentItemId: "417qsjrgv97e74wvp149h4da53" } }) { contentItemId displayText publishedUtc } }
Notice how we nest the AND
combinator inside the OR
combinator.
Pagination¶
When querying all content items of a specific content type, you can supply arguments that allow you to paginate the query response.
Limiting the number of results¶
To limit the number of results, use first
.
Skipping elements with skip¶
To skip a number of results, use skip
.
Examples¶
Query the first 3 content items:
query { posts(first: 3) { contentItemId displayText publishedUtc } }
Query the content items from position 6 to position 10:
query { posts( first: 5 skip: 5 ) { contentItemId displayText publishedUtc } }