Add dip20 holder count and improve token show style

app/assets/stylesheets/tokens.sass

@@ -1,5 +1,6 @@
 .token-logo
   max-width: 100%
+  width: 4.20rem
 
 .table-container
   background: #39272799
@@ -12,3 +13,6 @@ table.token-index
   .token-logo
     max-width: 4rem
     vertical-align: middle
+
+.token-show
+  font-size: 1rem

app/controllers/tokens_controller.rb

@@ -26,11 +26,17 @@ class TokensController < ApplicationController
     # if call icrc1_metadata #icrc1
     metadata = `dfx canister --network ic call #{@token.canister_id} icrc1_metadata 2>&1`
     if metadata.scan(/no update method/).present?
+      # TODO: Use getTokenInfo instead of getMetadata
       metadata = `dfx canister --network ic call #{@token.canister_id} getMetadata 2>&1`
       if metadata.scan(/no update method/).present?
         @token.standard = :unknown
       else
         @token.standard = :dip20
+
+        # TODO: Use getTokenInfo instead of getMetadata
+        tokenInfo = `dfx canister --network ic call #{@token.canister_id} getTokenInfo 2>&1`
+        @token.holder_number = tokenInfo.lines[2].split[2]
+
         @token.transfer_fee = metadata.lines[2].split[2].to_i
         @token.decimals = metadata.lines[3].split[2]
         # @token.owner = metadata.lines[4].split[3]

app/models/token.rb

@@ -9,4 +9,13 @@ class Token < ActiveRecord::Base
       return nil
     end
   end
+
+  def get_holder_number
+    if self.standard == "dip20"
+      tokenInfo = `dfx canister --network ic call #{self.canister_id} getTokenInfo 2>&1`
+      tokenInfo.lines[2].split[2]
+    else
+      "Get holder number coming soon."
+    end
+  end
 end

app/views/tokens/show.html.haml

@@ -1,3 +1,6 @@
+.contain
+  %h1
+    = @token.name
 
   - if policy(@token).edit?
     = link_to 'Edit', edit_token_path(@token)
@@ -5,6 +8,7 @@
 
   = link_to "Refresh Data", refresh_token_path(@token)
 
+.token-show
   %p
     %b Canister:
     = @token.canister_id
@@ -32,4 +36,7 @@
   %p
     %b Transfer fee:
     = @token.transfer_fee_to_f
+  %p
+    %b Holders:
+    = @token.holder_number
 

db/migrate/20231208104330_add_holder_number_to_token.rb

@@ -0,0 +1,5 @@
+class AddHolderNumberToToken < ActiveRecord::Migration[7.1]
+  def change
+    add_column :tokens, :holder_number, :integer
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2023_12_04_083004) do
+ActiveRecord::Schema[7.1].define(version: 2023_12_08_104330) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -250,6 +250,7 @@ ActiveRecord::Schema[7.1].define(version: 2023_12_04_083004) do
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.string "logo_url"
+    t.integer "holder_number"
     t.index ["canister_id"], name: "index_tokens_on_canister_id", unique: true
   end