The latest update to Pages.app allows docs to be exported in the ePub format. ePub is one of the formats that can be read by the iBooks app. Now, in order for documents to get onto your iPhone/iPad you have to add them to iTunes. By hand? No! Automatically with a Folder Action! Below is a script which you should save to your /Library/Scripts/Folder Action Scripts folder. Attach the script as a folder action to a designated "ePub Export" folder, which you will create. Whenever you "Export..." a Pages doc to that "ePub Export" folder, it will automatically be added to iTunes' Books library and eventually sync to your iPhone/iPad.
If your iTunes is set to "Copy files to iTunes Media folder when adding to library", then you may want to delete the original from the "ePub Export" folder; just un-comment the (* *) section in the script by removing the (* and *) and saving the script.
on adding folder items to my_folder after receiving the_files repeat with i from 1 to number of items in the_files set this_file to (item i of the_files) tell application "Finder" if (get name extension of this_file) is not "epub" then return end tell tell application "iTunes" try add this_file (* -- if you have iTunes set to --"Copy files to iTunes Media folder when adding to library" -- then you might want to delete the original file... -- if so, remove comments from this block and -- use the UNIX commands below to delete the file do shell script ("rm -f " & quoted form of POSIX path of (this_file as text)) *) end try end tell end repeat end adding folder items to
More info on Folder Actions for iTunes is located here.