wernerlaude

wernerlaude

Json View problem - Could not render / please define a matching clause for render/2 or define a template

I try to render a view as json.
router:

pipeline :api do
  plug :accepts, ["json"]
end

scope "/api", MyAppWeb do
 pipe_through :api

 get "/networking", PageController, :networking
end

controller:

def networking(conn, _params) do
 q = from m in Meeting, where: m.is_active == true
 meetings = Repo.all(q)
  render(conn, "networking.json", meetings: meetings)
end

view:

def render("networking.json", %{meetings: meetings}) do
 %{data: render_many(meetings, PageView, "networking.json")}
end

def render("networking.json", %{meeting: meeting}) do
   %{id: meeting.id,
   title: meeting.title}
end

But I get: Could not render "networking.json for MyAppWeb.PageView, please define a matching clause for render/2 or define a template…
Did I forget something? Thanks for support.

Most Liked

pureyoda

pureyoda

def render("networking.json", %{meetings: meetings}) do
 %{data: render_many(meetings, PageView, "networking.json")}
end

def render("networking.json", %{meeting: meeting}) do
   %{id: meeting.id,
   title: meeting.title}
end

The root key of the second parameter of the function below must match the view’s name.

views/page_view.ex
def render(“networking.json”, %{page: meeting}) do

acrolink

acrolink

I guess the problemscan be solved like this:

def render("index.json", %{meetings: meetings}) do
  %{data: render_many(meetings, PageView, "networking.json")}
end

def render("networking.json", %{meeting: meeting}) do
   %{id: meeting.id,
   title: meeting.title}
end

and in controller:

render(conn, "index.json", meetings: meetings)

kokolegorille

kokolegorille

The plug is here as it is defined in the router in the OP.

I would try to add a catch all clause in the view, just to see what params are sent. Like so…

def render("networking.json", params) do
   IO.inspect params
end

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