Asking about layout on apex page

Hai all, i'm newbie on web programming especially on apex,
is there tutorial or information about design region layout on page, because my region so crowd and not looks solid, especially about width region and centering contains on region
thank you

5f97ccbf-340e-4ea9-b68d-3878e2d2dbc8 wrote:
Please update your forum profile with a real handle instead of "5f97ccbf-340e-4ea9-b68d-3878e2d2dbc8".
Hai all, i'm newbie on web programming especially on apex,
is there tutorial or information about design region layout on page, because my region so crowd and not looks solid, especially about width region and centering contains on region
In APEX page layout is controlled using a combination of HTML and CSS via themes and templates. You need to have an understanding of these web technologies to make best use of APEX. If you're not familiar with them you're advised to get at least a basic understanding by spending some time on the tutorials here: start with HTML, then HTML5 and CSS. To modify behaviour as well as structure and presentation, Javascript, the HTML DOM and jQuery are also required.

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I want to share my experience, creating AJAX procedures in APEX 4.0.
LIMITATIONS
•     How Can I Hide UPDATE button while I press NEW button. ??
•     How Can I Hide CREATE button while I’m UPDATING A RECORD. ??
•     How can I avoid multiple Inserts or Updates. ??
Here are the steps to create an AJAX Updatable Form using the sample table DEPTS. You can see the demo here: [http://apex.oracle.com/pls/apex/f?p=15488:1]
1)     Create a blank page
2)     Add a Report Region for departments (It shows the columns deptno, dname and loc).
3)     Add an HTML Region and create the elements to edit a Department.
a.     P1_DEPTNO (Hidden to store PK)
b.     P1_DNAME (Text Field)
c.     P1_LOC (Text Field)
4)     You also have to create a hidden element called P1_ACTION. This will help to trigger dynamic actions to perform DMLs.
5)     Open Page Attributes and in the HTML Header Section include the following code.
<script>
     function doSelect(pId){
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          $x_Value(‘P1_ACTION’,’SELECT’);
</script>
6)     Modify the column DEPTNO in the report, to add column link. In the link text you can use #DEPTNO# , in target you must select ‘URL ‘ and in the URL field write javascript:doSelect(#DEPTNO#);
7)     Create the following Buttons in the Form Region.
CANCEL     Redirects to URL: javascript:$x_Value(‘P150_ACTION’,’CANCEL’);
NEW          Redirects to URL: javascript:$x_Value(‘P150_ACTION’,’NEW’);
SAVE          Redirects to URL: javascript:$x_Value(‘P150_ACTION’,’UPDATE’);
CREATE          Redirects to URL: javascript:$x_Value(‘P150_ACTION’,’CREATE’);
8)     Create the following Dynamic Action to Select a Department
Name:     Select Dept
Event:     Change
Selection Type:     Item(s)
Item(s):     P1_ACTION
Condition:     equal to
Value:     SELECT
Action:     Execute PL/SQL Code
PL/SQL Code:
SELECT dname, loc
INTO :P1_DNAME, :P1_LOC
FROM dept
WHERE deptno = :P1_DEPTNO;
Page Items to Submit:     P1_DEPTNO, P1_DNAME, P1_LOC
Don’t include any false action and create the Dynamic Action.
The first limitation, the value of page elements don’t do refresh so I added the following true actions to the dynamic action AFTER Execute PL/SQL Code.
Action:     Set Value
Unmark *‘Fire on page load’* and *‘Stop execution on error’*
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_DNAME
Page Items to submit:     (none) (leave it blank)
Affected Elements: Item P1_DNAME
Action:     Set Value
Unmark *‘Fire on page load’* and *‘Stop execution on error’*
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_LOC
Page Items to submit:     (none) (leave it blank)
Affected Elements: Item P1_LOC
These actions allow refresh the items display value.
9)     Create the following Dynamic Action to Update a Department
Name:     Update Dept
Event:     Change
Selection Type:     Item(s)
Item(s):     P1_ACTION
Condition:     equal to
Value:     CREATE
Action:     Execute PL/SQL Code
PL/SQL Code:
UPDATE dept SET
dname = :P1_DNAME,
loc = :P1_LOC
WHERE deptno = :P1_DEPTNO;
Page Items to Submit:     P1_DEPTNO, P1_DNAME, P1_LOC
Don’t include any false action and create the Dynamic Action.
Include the following True Actions BEFORE the Execute PL/SQL Code true Action.
Action:     Set Value
Unmark ‘Fire on page load’ and ‘Stop execution on error’
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_DNAME
Page Items to submit:     P1_DNAME
Affected Elements: Item P1_DNAME
Action:     Set Value
Unmark *‘Fire on page load’* and *‘Stop execution on error’*
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_LOC
Page Items to submit:     P1_LOC
Affected Elements: Item P1_LOC
These actions allow refresh the items display value.
Finally to refresh the Departments report, add the following true action at the end
Action:     Refresh
Affected Elements: Region Departments
10)     Create the following Dynamic Action to Create a Department
Name:     Create Dept
Event:     Change
Selection Type:     Item(s)
Item(s):     P1_ACTION
Condition:     equal to
Value:     CREATE
Action:     Execute PL/SQL Code
PL/SQL Code:
INSERT INTO dept(deptno,dname,loc)
VALUES (:P1_DEPTNO,:P1_DNAME,:P1_LOC);
Page Items to Submit:     P1_DEPTNO, P1_DNAME, P1_LOC
Don’t include any false action and create the Dynamic Action.
Include the following True Actions BEFORE the Execute PL/SQL Code true Action.
Action:     Set Value
Unmark *‘Fire on page load’* and *‘Stop execution on error’*
Set Type:     PL/SQL Function Body
PL/SQL Function Body:
DECLARE
v_pk NUMBER;
BEGIN
SELECT DEPT_SEQ.nextval INTO v_pk FROM DUAL;; -- or any other existing sequence
RETURN v_pk;
END;
Page Items to submit:     P1_DEPTNO
Affected Elements: Item P1_DEPTNO
Action:     Set Value
Unmark *‘Fire on page load’* and *‘Stop execution on error’*
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_DNAME
Page Items to submit:     P1_DNAME
Affected Elements: Item P1_DNAME
Action:     Set Value
Unmark ‘Fire on page load’ and ‘Stop execution on error’
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_LOC
Page Items to submit:     P1_LOC
Affected Elements: Item P1_LOC
These actions allow refresh the items display value.
Finally to refresh the Departments report, add the following true action at the end
Action:     Refresh
Affected Elements: Region Departments
11)     Create the following Dynamic Action to delete a department
Name:     Delete Dept
Event:     Change
Selection Type:     Item(s)
Item(s):     P1_ACTION
Condition:     equal to
Value:     DELETE
Action:     Execute PL/SQL Code
PL/SQL Code:
DELETE dept
WHERE deptno = :P1_DEPTNO;
Page Items to Submit:     P1_DEPTNO
Don’t include any false action and create the Dynamic Action.
Include the following True Actions AFTER the Execute PL/SQL Code true Action.
Action:     Refresh
Affected Elements: Region Departments
Action:     Clear
Unmark ‘Fire on page load’
Affected Elements: Items P1_DEPTNO, P1_DNAME, P1_LOC
12)     Finally Create the following Dynamic Action for the NEW event
Name:     New Dept
Event:     Change
Selection Type:     Item(s)
Item(s):     P1_ACTION
Condition:     equal to
Value:     NEW
Action:     Clear
Unmark *‘Fire on page load’*
Affected Elements: Items P1_DEPTNO, P1_DNAME, P1_LOC

I need some help to solve this issues
•     How Can I Hide UPDATE button while I press NEW button. ??
•     How Can I Hide CREATE button while I’m UPDATING A RECORD. ??
•     How can I avoid multiple Inserts or Updates. ??

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If that's the case the approach I would take:
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Hi,
I want to know critics of Layout Mode feature in DW. Seems
like a wonder tool to me, and apparently solves many of the
problems i had when laying out pages, all you have to do is drag
and drop tables or cells here and there and add content to them!
Is there any disadvantage or inconvenience with this
approach? Why isn't it the typical workflow in town (CSS seems to
be the dominant approach, despite obvious more steps and workforce
than layout mode).
Thank you in advance for your opinions, i appreciate.

Hello,
If the web were static like print media, layout mode would be
fine.
In many graphics applications like Photoshop, you can drag
elements (layers)
around until you get your design exactly how you want it.
Then, you simply save your design in whatever image format
you'd like. All
of the layers are merged into one, static image,
All of the parts have merged into one element, no longer the
multiple parts
you were dragging around.
When a user sees your image, either on a piece of paper or on
their computer
screen, it looks the same to everyone.
Overall, it might be bigger or smaller in whole dependant on
print size or
monitor resolution, but the layout itself can't change.
A web page, unless the page is one giant image, remains
multiple parts after
you publish it and some of these parts the user can change,
such as text
size.
Any area of your design with text in it will look different
on their screens
than on yours, but the images won't change size.
This is how the web works, and this is where layout mode
fails.
As you drag things around in layout mode, DW writes code to
try to keep the
elements exactly where you want them in relation to other
objects.
It merges cells which fills the code with colspans and
rowspans, and it adds
spacer images by the tens or hundreds in an effort to keep
everything "stuck
together" exactly where you dropped the elements.
The more things your drag and drop, the more complex the
code.
When you are done, your layout looks like you want it to on
your screen but
behind it is code that is very fragile and cumbersome.
With this code, if any part of your layout changes size in
someone's browser
(like a text area), everything else in the layout that is so
tightly tied to
it
will be affected as well.
This usually results in things shifting and not lining up any
more, the page
"breaking" and filling up with gaps and misalignments
throughout the page.
The one change ripples throughout the whole page, because
every element is
so tightly connected by the code Layout Mode wrote.
In essence, Layout Mode wrote such stringent and unforgiving
code that your
design will only work reliably at 1 text size and 1 browser
viewport size.
Those sizes are the sizes your browser was set at when you
designed the
page.
Think of it this way.
You have 100 playing cards and you lay them out on a table in
10 rows of 10
columns each.
You make sure all of the edges are touching.
It's a nice, tight layout.
On one of the cards in the center, you write some words in
marker.
If you saved this as an image, it would look the same to
everyone.
A hundred cards with all the edges touching and text written
on one of them.
If someone enlarges the image to read the text on the single
card, all the
other cards grow equally and the layout looks exactly the
same, only bigger.
However, if you saved this as a website and someone enlarges
the text to
read it, only the card with the text gets bigger.
All the others stay the same size. But you wanted all the
edges touching.
You'd like to keep as many cards as neatly arranged as
possible, but layout
mode doesn't care about that.
It's trying to keep every card edge touching, just like you
did when you
dragged and dropped them..
What happens to the neat rows and columns of cards if the
single card with
text on it doubles in size?
Cards all around it move and nothing lines up anymore. Gaps
appear between
every card.
Changing the size of that one piece of the layout ripples
through the rest
of the page because of that really complex, cumbersome code
Layout Mode
wrote. It really wants to keep everything just like you
wanted it, all the
edges touching and it doesn't care what the layout looks
like.
If you had used standard mode instead of layout mode, the
page would be
dynamic in that the elements (the cards) can freely flow in a
logical manner
under different user's settings.
When this single card doubles in size, the group of cards
above wouldn't be
affected. They would stay neatly arranged in rows with all
their edges
touching as would the group of cards below the enlarged card.
You'd keep a nice, neat layout of cards with just one row of
cards in the
center taller than the other rows because of the single
bigger card.
Instead of being filled with gaps and misalignments all over
the place that
Layout Mode's code caused, the page would still look good.
Layout Mode wrote such bad code as it tried to keep a layout
static in a
dynamic environment, that it has been removed from
Dreamweaver.
Here's more very good info, including a graphic example of a
common problem
Layout Mode creates for the unsuspecting....
http://apptools.com/rants/spans.php
There's something arguably as bad as layout mode you should
also stay way
from.
They, too, offer the ease of drag and drop but at a huge
price when you
realize all the troubles and then have to completely rebuild
your site.
Please read this:
http://apptools.com/examples/pagelayout101.php
Particularly, the section entitled "The trouble with layers"
(AP Divs)
Take care,
Tim
"mballom3" <[email protected]> wrote in
message
news:[email protected]...
> Hi,
>
> I want to know critics of Layout Mode feature in DW.
Seems like a wonder
> tool
> to me, and apparently solves many of the problems i had
when laying out
> pages,
> all you have to do is drag and drop tables or cells here
and there and add
> content to them!
>
> Is there any disadvantage or inconvenience with this
approach? Why isn't
> it
> the typical workflow in town (CSS seems to be the
dominant approach,
> despite
> obvious more steps and workforce than layout mode).
>
> Thank you in advance for your opinions, i appreciate.
>

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Thanks!!!
Best regards
Detlev

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JWS shows a dialog asking about updating new shortcut. But the "Yes" and
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Miki
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I have a table with html content that contains url's to apex pages similar to
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I don't have much control on how the url is generated, only the base path.
I also thought about building my own procedure to change the link value and then call the original f procedure, similar to:
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mwooldridge wrote:
I have a table with html content that contains url's to apex pages similar to
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<a href="f?p=115:300:???:PAGE:::P300_PAGE_NAME:another_test_page>another test page</a>
Always post HTML code using <tt>\...\</tt> tags to prevent it being rendered by the forum software.
Where ??? needs to be the session id.
I could use wwv_flow.do_substitutions to render the content and use &SESSION. in place of the question marks.How do you retrieve and render the content?
Did not like this option as my content is in a CLOB and didn't want to parse all the content if the links are never clicked, also the content could be very large.I don't like that option because it uses an undocumented, unsupported API call.

Asking about layout on apex page

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