JsonView.render_relationships

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render_relationships(struct, relationships)

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Render relationship field for struct. relationships is a list of {field, view} for mapping render. For each field, call function View.render() to render json for relation object.

Example relationships:

relationships = [comments: CommentView, author: UserView]
# or use a custom template instead of default template "user.json" in this case
relationships = [comments: CommentView, author: {UserView, "basic_info.json}]

Result of render_relationships(post, relationships) equal to output of below code

%{
    comments: CommentView.render_many(comments, CommentView, "comment.json"),
    author: UserView.render_one(author, UserView, "user.json")
}