[FIX]

app/helpers/projects_helper.rb

@@ -52,6 +52,7 @@ module ProjectsHelper
       type: project.numerical_for_project_type,
       author: render_owner(project),
       is_secret: project.is_secret,
+      is_member: !project.members.where(user_id: user.id).blank?,
       user_apply_signatures: project.apply_signatures.with_user_id(user.id).collect{|s| {id: s.id, status: s.status}}
     }).compact
 

app/queries/projects/list_my_query.rb

@@ -49,7 +49,7 @@ class Projects::ListMyQuery < ApplicationQuery
       
     q = projects.ransack(name_or_identifier_cont: params[:search])
 
-    scope = q.result.includes(:project_category, :project_language,:owner, :repository)
+    scope = q.result.includes(:project_category, :project_language,:owner, :repository, :members)
 
     sort = params[:sort_by] || "updated_on"
     sort_direction = params[:sort_direction] || "desc"

app/views/projects/_project_detail.json.jbuilder

@@ -53,7 +53,7 @@ json.category do
     end
   end
 end
-
+json.is_member !project.members.where(user_id: current_user.id).blank?
 user_apply_signatures = project.apply_signatures.with_user_id(current_user.id)
 json.user_apply_signatures user_apply_signatures do |signature|
   json.id signature.id