Field type who are link to another node

Hello
Im searching a module to add a new type of field in my Drupal site.
I have books and authors.
In my books i want to add a field authors whos is linked to the author's node

So when i add a new books i need a dropdown with all the title's node of the content type Authors.
When the node of the books will apear. It will show the title with a link to the node of the authors

Tanks

Integration with CRM - small business drupal site planning for the longhaul

So I have my Drupal 7 site up and running, themed the way I want it and the first few essential modules installed. Half way through the project looking at our needs (yes it should have been done in planning phase) im seeing that a lot can be tied into customer relationship management systems already out there. Most of this is overkill for our small scale operation currently but looking at the long term it would be silly to settle on something that would require twice the work later on to port.

We currently use Zoho for our projects and am just trying zohoCRM as well, this currently has little or no Drupal support but does link with google quite nicely (and drupal has a plethora of mods for that). My eyes however have been landing frequently on civiCRM of late due to its Drupal compatibility.

The main short term requirements are:
- having a core database of customers (and their details) we can analyse
- the ability to host events via this system that our customers can sign up to (and analyse attendance from the CRM)
- eventual ubercart integration for these events

Adding tracking code before the end body html tag

I am a total newcomer to Drupal, so please forgive me if I am posting in the wrong place or violating any rules.

I need to add tracking code to all of our pages and it must go right before the end body html code. The problem is that I can't find the end body html code when I go to view or edit a page. How can I access all of the code for a page to add the tracking code? Also, is there a way to set up adding the tracking code globally to all pages without having to enter it manually page by page?

Thank you for your help!

Error on changing field type: "There is data for this field in the database. The field settings can no longer be changed."

There is data for this field in the database. The field settings can no longer be changed.

This is in Drupal 7, stock install, in a custom content type. Trying to convert from an Integer to Float. I know the appropriate MySQL statement to make the change to the column:

alter table field_data_field_bathrooms modify column field_bathrooms_value double;

That will give me the database storage I want.

But, when I try to enter a decimal/float value, Drupal gives me the following error:

How to handle updates and upgrades for modules??

Question on upgrading modules say i am using module ABC7.xbeta that uses views for configurations then developer makes ABC7.xfull will i end up having to delete the view and installed module and reconfigure everything and lose the data attached to the views. I am trying to understand drupals upgrade processes and some modules move quickly especially right now when D7 is in heavy development if there is a better way to handle upgrades and updates Thanks

Serial Tracker

Hello Everyone,

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