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reference image file and change the location

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    #1

    reference image file and change the location

    Hi,

    I have a client that he use my inventory database, is working also with the images. For semplify the database I used on the table the IMAGE FILE REFERENCE ; now he decided to change the phisical path of these images. As the Image file reference store the path of the images it ,is possible for me rewrite that path without insert all images and how ?


    Thank you for your help or comment

    Cristiano
    Cristiano
    [email protected]

    Skype: cris-do
    Tags: None
    #2
    Re: reference image file and change the location

    Hi Cristiano,

    Just a quick thought, create a new C field with the new path. Use Update Operation to put in Path value.

    Create another new C field which would be calculated. The result is value of new field + Image field. Run Recalc.

    Change the image on the layout to the new field.

    This should not take more than 10 minutes.
    Regards
    Keith Hubert
    Alpha Guild Member
    London.
    KHDB Management Systems
    Skype = keith.hubert


    For your day-to-day Needs, you Need an Alpha Database!

    Comment

      #3
      Re: reference image file and change the location

      Originally posted by Keith Hubert View Post
      Hi Cristiano,

      Just a quick thought, create a new C field with the new path. Use Update Operation to put in Path value.

      Create another new C field which would be calculated. The result is value of new field + Image field. Run Recalc.

      Change the image on the layout to the new field.

      This should not take more than 10 minutes.
      Hi Keith,

      sorry but I do not understand create a new C ?? maybe is a new character Field ?
      and also, when I use the IMAGE FILE REFERENCE on the table I do not see the path but the image, could you make a sample ?

      thank you

      Cristiano
      Cristiano
      [email protected]

      Skype: cris-do

      Comment

        #4
        Re: reference image file and change the location

        Hi Cristiano,

        Yes that is Character field. And yes you are correct the image is displayed in the record, not the path. Which means my quick idea was not so good.

        How many records are there with images?
        Regards
        Keith Hubert
        Alpha Guild Member
        London.
        KHDB Management Systems
        Skype = keith.hubert


        For your day-to-day Needs, you Need an Alpha Database!

        Comment

          #5
          Re: reference image file and change the location

          Originally posted by Keith Hubert View Post
          Hi Cristiano,

          Yes that is Character field. And yes you are correct the image is displayed in the record, not the path. Which means my quick idea was not so good.

          How many records are there with images?
          Hi Keith there are more then 10.000 aricles and all with images.
          Cristiano
          [email protected]

          Skype: cris-do

          Comment

            #6
            Re: reference image file and change the location

            Hi Cristiano

            Add a field to your table that is a character field called for example "ifname"

            Using the filename parse functions extract just the filename into that new field from the image file reference field.

            (see FILE.FILENAME_PARSE() in the help file)


            Supposing your image reference for the original location is

            z:\shared\images\picture123.jpg

            and you wish to move the images to

            y:\images\inventory\picture123.jpg

            Use an update operation reset the image reference field content to "y:\images\inventory"+chr(92)+trim(ifname)

            In that way you can relocate your 10,000 images in a few seconds.

            For what its worth if I am building a table that I know will have image file reference field(s) I always add a field for each reference field that is a calculated field using the FILE.FILENAME_PARSE() function so the stripped down image file name is always available.

            Hope the above makes sense.

            Bob Whitaker.
            Bob Whitaker

            Comment

              #7
              Re: reference image file and change the location

              This help page on aliases may be of help
              Tim Kiebert
              Eagle Creek Citrus
              A complex system that does not work is invariably found to have evolved from a simpler system that worked just fine.

              Comment

                #8
                Re: reference image file and change the location

                Originally posted by Bob Whitaker View Post
                Hi Cristiano

                Add a field to your table that is a character field called for example "ifname"

                Using the filename parse functions extract just the filename into that new field from the image file reference field.

                (see FILE.FILENAME_PARSE() in the help file)


                Supposing your image reference for the original location is

                z:\shared\images\picture123.jpg

                and you wish to move the images to

                y:\images\inventory\picture123.jpg

                Use an update operation reset the image reference field content to "y:\images\inventory"+chr(92)+trim(ifname)

                In that way you can relocate your 10,000 images in a few seconds.

                For what its worth if I am building a table that I know will have image file reference field(s) I always add a field for each reference field that is a calculated field using the FILE.FILENAME_PARSE() function so the stripped down image file name is always available.

                Hope the above makes sense.

                Bob Whitaker.
                Hi Bob,
                I tried but I failed to get what I wanted, could you please send me a sample to better understand where I wrong ?

                Thank you
                Cristiano
                [email protected]

                Skype: cris-do

                Comment

                  #9
                  Re: reference image file and change the location

                  To go along with Tim's post....use the alias route. It is not native when the image reference fields records are added. All subsequent adds need to be coded to use an Alias if you want to avoid this in the future as well. That means a custom routine to encode the Alias when adding records. This problem also occurs if you have a non network opttimized app with image ref fields and then optimize it. The workstations will no longer be able to see the photos because the optimization routine makes the workstations think the photos are on the local machine in the same relative path. Below is an example.


                  Code:
                  'Get pointer to table
dim tbl as p
'This is my photo table
tbl=table.open("mmp_photos")

tbl.fetch_first()
DIM vimageref as C
DIM vthumbref as C
DIM vnewimagepath as C
DIM vnewthumbpath as C
tbl.batch_begin()
while .not. tbl.fetch_eof()
	
	'This gets the "Text" string of the photo location - there are 2 image refs in this table
	vimageref=a5_eval_expression(tbl.imagereff)
	vthumbref=a5_eval_expression(tbl.thumbreff)
''**************  For MMP Photos ****************************************
	'Now strip out the part that is directory dependendent (see the Q:\QRplus below)
	'That's what I need to get rid of make make it an alias
	'The example below was for my needs - you will have to tweak to suit your directories
	IF substr(vimageref,1,9)="Q:\QRPlus"
		vnewimagepath="[MMPPhotos]"+substr(vimageref,21,len(vimageref))
		vnewthumbpath="[MMPPhotos]"+substr(vthumbref,21,len(vthumbref))
	ELSE
		vnewimagepath="[MMPPhotos]"+substr(vimageref,27,len(vimageref))
		vnewthumbpath="[MMPPhotos]"+substr(vthumbref,27,len(vthumbref))	
	end if
''****************** End MMP Photos **************************************
'Now encode the image ref back but with an Alias
'Use the following settings for the MMP PHotos Table - Notice the different Alias from WO Photos

	tbl.change_begin()
	tbl.Imagereff=filename_encode(vnewimagepath)
	tbl.Thumbreff=filename_encode(vnewthumbpath)
	tbl.change_end()
	
	
	tbl.fetch_next()
	end while
tbl.batch_end()
tbl.close()
                  Make sure you setup your alias prior to running this in the Setup menu in Alpha. After doing this if you ever wanted to change the location again - just change the alias (the subdirectory structure under the alias must remain the same however).

                  Regards,

                  Jeff

                  Comment

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