How to Query the API with .NET
prismic.io natively supports Custom types. Custom types allow you to define and configure fields for your content. Define custom types for pages, posts, events, authors, products, places, …
A productive way to build pages with prismic.io, is to follow an iterative cycle of defining fields for your custom type, querying its content, and then integrating it into templates.
Queries allow you to retrieve content to be displayed in your pages.
Queries in prismic.io are based on predicates. Some predicates apply to any custom type, and some are field-specific. You can also combine multiple predicates to express your query.
Here is an example query for retrieving a basic page through its UID:
// String uid comes from the querystring Document document = api.GetByUID("basic-page", uid);
The following example retrieves all blog posts:
Response response = api.query(Predicates.at("document.type", "blog-post")) .PageSize(10) .Orderings("my.blog-post.date desc") .Submit();
A full-text search on all blog posts is done combining two predicates:
Response response = api.Query( Predicates.at("document.type", "blog-post"), Predicates.fulltext("document", terms) // terms is a String ).Submit(); IList<Document> documents = response.Results;
The at operator is the equality operator, checking that the fragment matches the described value exactly.
It takes a value for a field or an array (only for tags).
The not operator is the different operator, checking that the fragment doesn't match the described value exactly.
It takes a value for a field.
The any operator takes an array of strings as a value. It works exactly the same way as the at operator, but checks whether the fragment matches either one of the values in the array. You can use it with all fragment types.
The in operator is used to retrieve documents using an Array of IDs or UIDs. This operator is much more performant than the any operator. This operator is more performant than any to query document by UID or ID. This operator return the documents in the same order as the passed Array.
The fulltext operator provides two capabilities: either you want to check if a certain string is anywhere inside a document (this is what you should use to make your project's search engine feature), or if the string is contained inside a specific document's structured text fragment. In the example you want to search the term banana in the document
If you want to check in a given structured text fragment you will use something like the second example.
The has operator check whether a fragment has a value.
The missing operator check if a fragment doesn't have a value. Note that the missing operator will restrict the results to the type implied in the fragment path.
The similar operator is especially smart, since it takes an ID of a document, and returns a list of documents whose contents are similar. This allows to build an automated content discovery feature (for instance, a "Related posts" block) at almost no cost.
Also, remember that you can combine it with other predicates, and search for the "similar blog posts" for instance, of even the "similar blog posts that mention chocolate".