Add endpoint to list issues for a specific board list

app/controllers/projects/board_issues_controller.rb

+class Projects::BoardIssuesController < Projects::ApplicationController
+  respond_to :json
+
+  rescue_from ActiveRecord::RecordNotFound, with: :record_not_found
+
+  def index
+    issues = Boards::Issues::ListService.new(project, current_user, filter_params).execute
+    issues = issues.page(params[:page])
+
+    render json: issues.as_json(only: [:id, :title, :confidential], include: { labels: { only: [:id, :title, :color] } })
+  end
+
+  private
+
+  def filter_params
+    params.permit(:list_id)
+  end
+
+  def record_not_found(exception)
+    render json: { error: exception.message }, status: :not_found
+  end
+end

config/routes.rb

@@ -857,6 +857,7 @@ Rails.application.routes.draw do
         end
 
         resource :board, only: [:show] do
+          resources :issues, only: [:index], controller: :board_issues
           resources :lists, only: [:create, :update, :destroy], controller: :board_lists
         end
 

spec/controllers/projects/board_issues_controller_spec.rb

+require 'spec_helper'
+
+describe Projects::BoardIssuesController do
+  let(:project) { create(:project_with_board) }
+  let(:user)    { create(:user) }
+
+  before do
+    project.team << [user, :master]
+    sign_in(user)
+  end
+
+  describe 'GET #index' do
+    context 'with valid list id' do
+      it 'returns issues that have the list label applied' do
+        label1 = create(:label, project: project, name: 'Planning')
+        label2 = create(:label, project: project, name: 'Development')
+
+        create(:labeled_issue, project: project, labels: [label1])
+        create(:labeled_issue, project: project, labels: [label2])
+        create(:labeled_issue, project: project, labels: [label2])
+
+        create(:list, board: project.board, label: label1, position: 1)
+        development = create(:list, board: project.board, label: label2, position: 2)
+
+        get :index, namespace_id: project.namespace.to_param,
+                    project_id: project.to_param,
+                    list_id: development.to_param
+
+        parsed_response = JSON.parse(response.body)
+
+        expect(response).to match_response_schema('issue', array: true)
+        expect(parsed_response.length).to eq 2
+      end
+    end
+
+    context 'with invalid list id' do
+      it 'returns a not found 404 response' do
+        get :index, namespace_id: project.namespace.to_param,
+                    project_id: project.to_param,
+                    id: 999
+
+        expect(response).to have_http_status(404)
+      end
+    end
+  end
+end

spec/fixtures/api/schemas/issue.json

+{
+  "type": "object",
+  "required" : [
+    "id",
+    "title",
+    "confidential"
+  ],
+  "properties" : {
+    "id": { "type": "integer" },
+    "title": { "type": "string" },
+    "confidential": { "type": "boolean" },
+    "labels": {
+      "type": ["array"],
+      "required": [
+        "id",
+        "color",
+        "title"
+      ],
+      "properties": {
+        "id": { "type": "integer" },
+        "color": {
+          "type": "string",
+          "pattern": "^#[0-9A-Fa-f]{3}{1,2}+$"
+        },
+        "title": { "type": "string" }
+      }
+    }
+  },
+  "additionalProperties": false
+}