fix qr url

apps/block_scout_web/config/config.exs

@@ -38,6 +38,7 @@ config :block_scout_web, BlockScoutWeb.Counters.BlocksIndexedCounter, enabled: t
 config :block_scout_web, BlockScoutWeb.Endpoint,
   instrumenters: [BlockScoutWeb.Prometheus.Instrumenter, SpandexPhoenix.Instrumenter],
   url: [
+    scheme: System.get_env("BLOCKSCOUT_PROTOCOL") || "http",
     host: System.get_env("BLOCKSCOUT_HOST") || "localhost",
     path: System.get_env("NETWORK_PATH") || "/"
   ],

apps/block_scout_web/config/prod.exs

@@ -20,7 +20,7 @@ config :block_scout_web, BlockScoutWeb.Endpoint,
   check_origin: System.get_env("CHECK_ORIGIN") || false,
   http: [port: System.get_env("PORT")],
   url: [
-    scheme: "https",
+    scheme: System.get_env("BLOCKSCOUT_PROTOCOL") || "https",
     port: System.get_env("PORT"),
     host: System.get_env("BLOCKSCOUT_HOST") || "localhost",
     path: System.get_env("NETWORK_PATH") || "/"

apps/block_scout_web/lib/block_scout_web/views/tokens/instance/overview_view.ex

@@ -42,7 +42,7 @@ defmodule BlockScoutWeb.Tokens.Instance.OverviewView do
   def qr_code(conn, token_id, hash) do
     token_instance_path = token_instance_path(conn, :show, to_string(hash), to_string(token_id))
 
-    url = blockscout_url() <> token_instance_path
+    url = Path.join(blockscout_url(), token_instance_path)
 
     url
     |> QRCode.to_png()

docs/env-variables.md

@@ -68,3 +68,4 @@ $ export NETWORK=POA
 | `COIN_GECKO_ID` | | CoinGecko coin id required for fetching an exchange rate | poa-network | v2.0.4+ | | master |
 | `EMISSION_FORMAT` | | Should be set to `POA` if you have block emission indentical to POA Network. This env var is used only if `CHAIN_SPEC_PATH` is set | `STANDARD` | v2.0.4+ | | |
 | `REWARDS_CONTRACT_ADDRESS` | | Emission rewards contract address. This env var is used only if `EMISSION_FORMAT` is set to `POA` | `0xeca443e8e1ab29971a45a9c57a6a9875701698a5` | v2.0.4+ | | |
+| `BLOCKSCOUT_PROTOCOL` | | Url scheme for blockscout | in prod env `https` is used, in dev env `http` is used | master | | |