# `PhoenixKitWeb.Dashboard.ContextProvider`
[🔗](https://github.com/BeamLabEU/phoenix_kit/blob/v1.7.71/lib/phoenix_kit_web/dashboard/context_provider.ex#L1)

LiveView on_mount hook for loading dashboard contexts.

This module provides an on_mount hook that loads available contexts for the
current user and sets socket assigns for the context selector.

## Usage

Add to your live_session:

    live_session :dashboard,
      on_mount: [
        {PhoenixKitWeb.Users.Auth, :phoenix_kit_ensure_authenticated_scope},
        {PhoenixKitWeb.Dashboard.ContextProvider, :default}
      ]

## Assigns Set (Single Selector - Legacy)

- `@dashboard_contexts` - List of all contexts available to the user
- `@current_context` - The currently selected context (or nil)
- `@show_context_selector` - Boolean, true only if user has 2+ contexts
- `@context_selector_config` - The ContextSelector config struct
- `@current_contexts_map` - Map with single entry `%{key => current_context}` for badge compatibility
- `@dashboard_contexts_map` - Map with single entry `%{key => contexts}` for consistency
- `@show_context_selectors_map` - Map with single entry `%{key => show_selector}`
- `@dashboard_tabs` - (Optional) List of Tab structs when `tab_loader` is configured

Note: The `key` used in maps is `config.key` if set, otherwise `:default`.
This ensures context-aware badges work correctly with legacy single-selector configs.

## Assigns Set (Multiple Selectors)

- `@dashboard_contexts_map` - Map of key => list of contexts
- `@current_contexts_map` - Map of key => current context item
- `@show_context_selectors_map` - Map of key => boolean
- `@context_selector_configs` - List of all ContextSelector configs

Note: Legacy assigns are also set for backward compatibility when using
multiple selectors. The first selector's data populates the legacy assigns.

## Accessing in LiveViews

    def mount(_params, _session, socket) do
      # Single selector (legacy)
      context = socket.assigns.current_context

      # Multiple selectors
      org = socket.assigns.current_contexts_map[:organization]
      project = socket.assigns.current_contexts_map[:project]

      if context do
        items = MyApp.Items.list_for_context(context.id)
        {:ok, assign(socket, items: items)}
      else
        {:ok, assign(socket, items: [])}
      end
    end

# `on_mount`
[🔗](https://github.com/BeamLabEU/phoenix_kit/blob/v1.7.71/lib/phoenix_kit_web/dashboard/context_provider.ex#L77)

On mount hook that loads contexts and sets assigns.

## Options

- `:default` - Standard behavior, loads contexts for authenticated user
- `:optional` - Same as default, but doesn't require authentication

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*Consult [api-reference.md](api-reference.md) for complete listing*