Meteor.startup(function () {
  // Reset Database only in environment dev
  if (process.env.NODE_ENV === 'development') {
    KSessions.remove({});
    Books.remove({});

    // Specific insert for Books
    Fixtures.books.forEach(function(rec) {
      if (Books.findOne(rec._id)) {
        Books.update(rec._id, rec);
      }
      else {
        Books.insert(rec);
      }
    });

    Meteor.publish("all_books", function() {
      return Books.find();
    });

    // Specific insert for KSessions
    Fixtures.ksessions.forEach(function(rec) {
      if (KSessions.findOne(rec._id)) {
        KSessions.update(rec._id, rec);
      }
      else {
        KSessions.insert(rec);
      }
    });

    Meteor.publish("all_ksessions", function() {
      return KSessions.find();
    });

    // Specific insert for users
    Fixtures.users.forEach(function(user) {
      if (! Meteor.users.findOne({username: user.username})) {
        Accounts.createUser(user);
      }

    });
  }
});
Meteor.startup(function () {
  // Reset Database only in environment dev
  if (process.env.NODE_ENV === 'development') {
    KSessions.remove({});
    Books.remove({});
    datas = Fixtures; // Specific datas for dev environment
  }
  else if (process.env.NODE_ENV === 'production') {
    datas = Datas; // Specific datas for prod environment
  }

  // Specific insert for Books
  datas.books.forEach(function(record) {
    if (Books.findOne(record._id)) {
      Books.update(record._id, record);
    }
    else {
      Books.insert(record);
    }
  });
  
  Meteor.publish("all_books", function() {
    return Books.find();
  });
  
  // Specific insert for KSessions
  datas.ksessions.forEach(function(record) {
    if (KSessions.findOne(record._id)) {
      KSessions.update(record._id, record);
    }
    else {
      KSessions.insert(record);
    }
  });
  
  Meteor.publish("all_ksessions", function() {
    return KSessions.find();
  });
  
  // Specific insert for users
  datas.users.forEach(function(user) {
    if (! Meteor.users.findOne({username: user.username})) {
      Accounts.createUser(user);
    }
  });
});

--- 
+++ 
@@ -3,44 +3,41 @@
   if (process.env.NODE_ENV === 'development') {
     KSessions.remove({});
     Books.remove({});
-    datas = Fixtures; // Specific datas for dev environment
+
+    // Specific insert for Books
+    Fixtures.books.forEach(function(rec) {
+      if (Books.findOne(rec._id)) {
+        Books.update(rec._id, rec);
+      }
+      else {
+        Books.insert(rec);
+      }
+    });
+
+    Meteor.publish("all_books", function() {
+      return Books.find();
+    });
+
+    // Specific insert for KSessions
+    Fixtures.ksessions.forEach(function(rec) {
+      if (KSessions.findOne(rec._id)) {
+        KSessions.update(rec._id, rec);
+      }
+      else {
+        KSessions.insert(rec);
+      }
+    });
+
+    Meteor.publish("all_ksessions", function() {
+      return KSessions.find();
+    });
+
+    // Specific insert for users
+    Fixtures.users.forEach(function(user) {
+      if (! Meteor.users.findOne({username: user.username})) {
+        Accounts.createUser(user);
+      }
+
+    });
   }
-  else if (process.env.NODE_ENV === 'production') {
-    datas = Datas; // Specific datas for prod environment
-  }
-
-  // Specific insert for Books
-  datas.books.forEach(function(record) {
-    if (Books.findOne(record._id)) {
-      Books.update(record._id, record);
-    }
-    else {
-      Books.insert(record);
-    }
-  });
-  
-  Meteor.publish("all_books", function() {
-    return Books.find();
-  });
-  
-  // Specific insert for KSessions
-  datas.ksessions.forEach(function(record) {
-    if (KSessions.findOne(record._id)) {
-      KSessions.update(record._id, record);
-    }
-    else {
-      KSessions.insert(record);
-    }
-  });
-  
-  Meteor.publish("all_ksessions", function() {
-    return KSessions.find();
-  });
-  
-  // Specific insert for users
-  datas.users.forEach(function(user) {
-    if (! Meteor.users.findOne({username: user.username})) {
-      Accounts.createUser(user);
-    }
-  });
 });
Disable data change in prod and pre-prod environment
