![]() JS Async JS Callbacks JS Asynchronous JS Promises JS Async/Await JS Classes Class Intro Class Inheritance Class Static JS Functions Function Definitions Function Parameters Function Invocation Function Call Function Apply Function Bind Function Closures JS Objects Object Definitions Object Properties Object Methods Object Display Object Accessors Object Constructors Object Prototypes Object Iterables Object Sets Object Maps Object Reference Using join: queries for filtering based on relationships, preload: queries for included resources and select: lists for sparse fieldsets, the generated queries are as efficient as what you would write by hand.JS Tutorial JS HOME JS Introduction JS Where To JS Output JS Statements JS Syntax JS Comments JS Variables JS Let JS Const JS Operators JS Arithmetic JS Assignment JS Data Types JS Functions JS Objects JS Events JS Strings JS String Methods JS String Search JS String Templates JS Numbers JS BigInt JS Number Methods JS Number Properties JS Arrays JS Array Methods JS Array Sort JS Array Iteration JS Array Const JS Dates JS Date Formats JS Date Get Methods JS Date Set Methods JS Math JS Random JS Booleans JS Comparisons JS If Else JS Switch JS Loop For JS Loop For In JS Loop For Of JS Loop While JS Break JS Iterables JS Sets JS Maps JS Typeof JS Type Conversion JS Bitwise JS RegExp JS Precedence JS Errors JS Scope JS Hoisting JS Strict Mode JS this Keyword JS Arrow Function JS Classes JS Modules JS JSON JS Debugging JS Style Guide JS Best Practices JS Mistakes JS Performance JS Reserved Words Render("index.json-api", data: articles, opts: [ ![]() # pass data and opts as expected by `ja_serializer` Then in an API request handler, use the query builder: defmodule ArticleController do User_query = from(User, select: ) |> (params)įrom a in query, join: u in ^subquery(user_query), on: a.user_id = JsonApiQueryBuilderĭef include(query, "comments", comment_params) doįrom query, preload: ĭef include(query, "author", author_params) doįrom query, select_merge:, preload: Relationships: ["author", JsonApiQueryBuilderĭef filter(query, "tag", value), do: from(a in query, where: ^value in a.tag_list)Ĭomment_query = from(Comment, select:, distinct: true) |> (params)įrom a in query, join: c in ^subquery(comment_query), on: a.id = c.article_id blog/users?include=articles&filter=animalsįor each Ecto schema, create a related query builder module: defmodule Article doīelongs_to :author, User, foreign_key: :user_id Get all users, including related articles that have the animals tag ![]() Get all users who have an article with the animals tag ![]() blog/articles/?include=author,comments,er Get all articles, including related author, comments and comments user Get all articles, sorted by category ascending and published descending Get all articles, including only the title and description fields JSON-API Query Builder can be used to construct an efficient Ecto query to handle the following kinds of requests, in arbitrary combinations. The package can be installed by adding json_api_query_builder to your list of dependencies in mix.exs: def deps do Build Ecto queries from JSON-API requests.
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