Home » RADICORE » How To » Update 4
| Update 4 [message #888] |
Thu, 28 June 2007 13:02  |
danpoleary
Messages: 49
Registered: February 2007
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A little lost,
I have a 3 tasks based on tablename(upd4).php, that I would like to use to update multiple records. I have read the "update 4" in the dialog-types, which says perform the modifications within the table class, but am not sure how to proceed.
The three I have are tablename_task1(upd4).php, tablename_task2(upd4).php and tablename_task3(upd4).php. I want to be able to detect which one is called inside the table class, and update certain fields accordingly. Any examples of using update 4, that I can refer to?
Thanks in advance,
Dan
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| Re: Update 4 [message #891 is a reply to message #890] |
Fri, 29 June 2007 10:24  |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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If you want to find a working example of any transaction pattern the the best place to look is Home->Menu System->List Pattern, choose the pattern you want, then press the 'List Task' button. This will show you all the tasks in the system which follow that pattern.
If you try this with UPD4 you will see the following tasks:
- dict_database(export)
- dict_table(export)
- mnu_subsystem(build)
- mnu_subsystem(export)
If you want to see which methods are used by a particular patter then you need to look at http://www.tonymarston.net/php-mysql/dialog-types.html, pick a pattern, then scroll down till you see the heading 'Object Calls'. If you do this for UPD4 you will see the following sequence of method calls:
- initialise()
- getData()
- startTransaction()
- updateMultiple()
- commit()
Each one of these is a hyperlink that will take you to http://www.tonymarston.net/php-mysql/functions-and-variables .html for a more detailed explanation as some of these methods may call other methods.
Once you realise which methods are called in which sequence it should be easy to identify where your code should go.
If you want to introduce a popup form in this sequence so that the user can choose a value then you should not be using the UPD4 pattern as this does not allow any dialog with the user. If you want any user dialog before the update you should be using the UPD1 pattern
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #893 is a reply to message #892] |
Fri, 29 June 2007 12:42 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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If you need to perform the same update on multiple records it sounds like you need to use the updateSelection() method instead of the updateRecord() method. The updateSelection() method uses two arguments, $selection and $replace, and will issue an SQL query in the format "UPDATE <table> SET $replace WHERE $selection". If you also want to call a popup to obtain a key from a foreign table to include in the update then take a look at the UPDATE 2 pattern.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #895 is a reply to message #894] |
Fri, 29 June 2007 15:32 |
AJM
Messages: 2371
Registered: April 2006
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When you bring up the list of files from the chosen source, is it your intention to process all of them, or just a selection of them? Are you moving them to a different destination, or is other processing involved?
When you are attempting something which is rather complicated it may appear that there is not a pattern which fits the job 100%, but in that case you must try the nearest match then insert custom code which can override the default behaviour of that pattern. Every different pattern executes a different set of methods in a predeterined sequence. All of the methods which begin with '_cm_' are customisable, which means that you can copy the empty stub from 'std.table.class.inc' into your table class, then insert your own code which will be executed when that method is called. You should find a '_cm_pre_' and '_cm_post_' method either side of each standard method, so you have the opportunity to execute your own code before and after each standard method.
Once you become more familiar with the framework you should realise that the ability to have your own code executed in several different places along the processing flow is a really powerful tool. The biggest difficulty is being able to pick the most appropriate pattern, then knowing what code to put where. It gets easier with experience (or so I'm told) 
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #897 is a reply to message #895] |
Tue, 03 July 2007 11:47 |
danpoleary
Messages: 49
Registered: February 2007
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Hi,
Tried a few things, but not sure if my final logic will work.
If I am on the sources table screen, and select (lets say source1), then click "update multiple files". The update multiple screen, will provide a list of all files, from the files table, from that source.
I then select the files I want to set to "publish", then click on "publish selected". At this point, in the publish selected script (inside the custom table class that extends the "files" table class) I then use a call to scriptNext, to call a popup that lets me select the "destination" key from the destination table.
After I call scriptPrevious, and now back inside my publish script, I set the boolean value of publish to "true" and the destination key value to the the return value.
Will this logic work, or am I heading in the wrong direction?
Thanks,
Dan
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| Re: Update 4 [message #898 is a reply to message #897] |
Tue, 03 July 2007 13:14 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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You could always try it and see, but my personal approach would be different. After selecting the source I would activate a MULTI4 screen which would show me the source directory at the top (outer/parent) with the files within that directory at the bottom (inner/child). The interesting aspect to the MULTI4 is that it allows updates to both the parent and child entities, so in the source area you could also select the destination.
After selecting entries from the files (inner/child) area I would then have a navigation button which used an UPDATE4 to perform a specific action on the selected files.
This is made possible by the following tricks you can use within custom methods:
- in order to be able to have a "destination" field in the "source" area you can have code in the _cm_changeConfig() method which alters the contents of $this->fieldspec. You could have this as a popup or a dropdown depending on the number of possible entries.
- in order to make the contents of "destination" available in the "files" area as well as the "source" area when a button is pressed you would also need to add it to $this->fieldspec of the "files" class.
- when you press a navigation button the default behaviour is to pass the values from the primary keys of the selected records to the child screen, which I think in this case would be "source" and "filename". You can use the _cm_getPkeyNames() method to add "destination" to the list of primary key fields so that its value can be included in the selection string which is passed to the UPDATE4 script, which then has all the information it needs to perform the necessary processing.
How does that sound?
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #900 is a reply to message #899] |
Wed, 04 July 2007 12:42 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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All information about popups is avalable in the FAQ:
The value for 'foreign_field' can be any value from the foreign table - either the primary key, or any non-key field. It's up to you what you want displayed.
If you add 'destination' to $this->fieldspec in the 'files' object as well as the 'source' object, then the value for 'destination' should be given to both objects when a submit button is pressed. Once the value is avalaible in $this->fieldarray it can be made to appear in the selection string by adding it to the array in _cm_getPkeyNames.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #901 is a reply to message #900] |
Wed, 04 July 2007 13:50 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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I've just run a test and discovered that the value from the outer entity is not being loaded into the inner entity, so I've made a little change to the array_update_indexed() function inside file include.general.inc which solves the problem.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #908 is a reply to message #901] |
Thu, 05 July 2007 09:56 |
danpoleary
Messages: 49
Registered: February 2007
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Hi Tony,
Before you sent that update, I did get something to work. When I clicked on the multi4 after choosing a source, I get the screen with the source data editable at the top as expected, but the field for the destination_key/desc does not appear.
When I replaced my include.general.inc with the updated one, everything stopped working, blank screen on login. I then reverted the include file, and only incorporated the changed function. Now I can log in, but my call to multi4 brings up a blank screen.
In the popup faq's above, do I need to update the dict file for the source table? If I do, will that not appear on the standard source list1 screen all the time?
and, should I add the field description to the screen.inc file used for my multi4?
Thanks,
Dan
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| Re: Update 4 [message #909 is a reply to message #908] |
Thu, 05 July 2007 10:31 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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I do not understand why your MULTI4 starts off with a blank screen as the change I made to the array_update_indexed() function is only used after the form has been displayed and a button is pressed.
The field for destination_key/desc will not appear in the 'source' area unless it has an entry in the $fieldspec array within the 'source' object which identifies the type of HTML control which is to be used. It must also have an entry in $fieldarray which can either be blank or set to an initial value.
You do not need to create a relationship between 'source' and 'destination' in the dictionary unless there is a true relationship. The only reason for reading the foreign table in a relationship is to obtain a non-key description field which is to be displayed in the popup control instead of the foreign key. If you are happy to show the foreign key then you do not need any reference to a foreign table. If you do wish to read the foreign table to obtain a non-key field, and a true relationship has not been defined in the dictionary, you can always insert code in the _cm_getForeignData() method to read the table manually and insert the non-key field into $fieldarray.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #910 is a reply to message #909] |
Thu, 05 July 2007 11:00 |
danpoleary
Messages: 49
Registered: February 2007
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Member |
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Hi,
Found my mistake, and fixed the blank screen problem (ftp problem).
Anyway, I did the following:
1. created a new class (sources_destination) derived from the original (sources) class.
2. added the function _cm_changeConfig to this new class:
| Quote: |
function _cm_changeConfig ($where, $fieldarray)
{
$this->fieldspec['publish_key'] = array('type' => 'string',
'size' => 1024,
'required' => 'y',
'control' => 'popup',
'task_id' => 'destination_list(popup)',
'foreign_field' => 'Collection_destination');
return $fieldarray;
}
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3. In my filelist(multi4).php, I use (sources_destination) as the outer table. Should this stay as sources?
I did all this first, to ensure that after I pick a source, and select multi4, that I get the screen as described with the extra field displayed in the outer. What I get though, is just the list of files! I think I got myself a little tangled...
Dan
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| Re: Update 4 [message #911 is a reply to message #910] |
Thu, 05 July 2007 11:30 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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If you have changed your 'filelist(multi4).php' script to use 'sources_destination' as the outer table instead of 'source' then have you also changed your screen structure file so that the entry for the outer table also reads 'sources_destination'? If you have not then the XSL sylesheet is still looking for data with the 'source' tablename, and as it cannot find anything with that name it cannot display anything, thus leaving the whole area blank.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #913 is a reply to message #912] |
Thu, 05 July 2007 12:35 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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In order to display a field with a particular HTML control you must have an entry in $this->fieldspec which identifies which control to use. You must also have an entry in the screen structure file which identifies where that field is to be displayed. You must also have an entry in $fieldarray, even if it is blank, otherwise the XSL stylesheet will ignore that entry. Remember that the names must be identical.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #914 is a reply to message #913] |
Thu, 05 July 2007 12:48 |
danpoleary
Messages: 49
Registered: February 2007
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I got the first two already, in my sources_destination.class.inc, I have:
| Quote: |
function _cm_changeConfig ($where, $fieldarray)
{
$this->fieldspec['publish_key'] = array('type' => 'string',
'size' => 1024,
'required' => 'y',
'control' => 'popup',
'task_id' => 'collection_list(popup1)',
'foreign_field' => 'publish_key');
return $fieldarray;
}
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In the filelist.multi4.screen.inc, I have:
| Quote: |
$structure['outer']['fields'][] = array('source_key' => 'Source Key');
$structure['outer']['fields'][] = array('source_url' => 'Source Url');
$structure['outer']['fields'][] = array('contact' => 'Contact');
$structure['outer']['fields'][] = array('phone' => 'Phone');
$structure['outer']['fields'][] = array('email' => 'Email');
$structure['outer']['fields'][] = array('region' => 'Region');
$structure['outer']['fields'][] = array('source_root' => 'Source Root');
$structure['outer']['fields'][] = array('parent_source_key' => 'Parent Source Key');
$structure['outer']['fields'][] = array('publish_key' => 'Publish Key');
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But where does the $fieldarray come into play?
I looked through the code, and the FAQ's, and am not sure where this should be applied.
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| Re: Update 4 [message #915 is a reply to message #914] |
Thu, 05 July 2007 13:12 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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$fieldarray (or $this->fieldarray) is the array of data which is exported to the XML file which is used by the XSL stylesheet to build the HTML document. It displays the values for named fields in specified places, so if there is nothing in $fieldarray for a field called 'publish_key' then it will be ignored by the XSL stylesheet.
The contents of $fieldarray is initially populated by a call to getData() - except for input screens where getInitialData() is used instead - so you need to insert a value for 'publish_key' in _cm_post_getData() so that the XSL stylesheet has something to work with.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #920 is a reply to message #919] |
Fri, 06 July 2007 13:12 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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Senior Member |
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The MULTI4 pattern has an outer (top) entity which shows a single occurrence and an inner (bottom) entity which shows multiple occurrences. You have a popup in the outer entity which supplies a value for 'sel_publish_key'. When you select occurences of the inner entity and press the navigation button to activate the UPDATE4 function you want the value for 'sel_publish_key' included in the selection string which is passed to that function.
As the selection string will be extracted from the inner entity you need to do the following:
- include 'sel_publish_key' in the $fieldspec array of the inner entity so that the value selected in the outer entity will also appear in the POST array for the inner entity.
- add 'sel_publish_key' to the pkey array in the _cm_getPkeyNames() method within the inner entity so that it can be included in the selection string. Without this only those fields in the primary key will be used.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #922 is a reply to message #921] |
Mon, 09 July 2007 12:14 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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What is this line?
$fieldarray['sel_publish_key'] = $_SESSION['san_filelist(multi4)']['sel_publish_key'];
I have never suggested that you use anything like this.
The contents of 'sel_publish_key' in the outer entity will not appear in the inner entity until AFTER the navigation button has been pressed. The contents of the $_POST array will then contain a single occurrence from the outer entity, plus one or more occurrences from the inner entity. A field in the $_POST array for the outer entity will not be merged with the data for the inner entity UNLESS a field with that name is found in the inner entity's $fieldspec array.
In order to get the value for 'sel_publish_key' included in the selection string which is passed from the inner entity to the UPDATE4 function you will need to add 'sel_publish_key' to $pkey_array in the _cm_getPkeyNames() method of the inner entity.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #925 is a reply to message #922] |
Mon, 09 July 2007 15:16 |
danpoleary
Messages: 49
Registered: February 2007
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Member |
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Hi Tony,
Sorry, I based that call on something on say in the existing code.
I now have the following in the inner entity (filelist_auto.class.inc file) which extends the filelist.class.inc. This extended class is used in both the multi4, and in the update4.
| Quote: |
function _cm_pre_updateRecord($rowdata)
{
$rowdata['autopublish'] = TRUE;
// what was select in the popup during _cm_initialize
$rowdata['publish_key'] = $rowdata['sel_publish_key'];
return $rowdata;
}
function _cm_changeConfig ($where, $fieldarray)
{
$fieldarray['sel_publish_key'] = '';
$this->fieldspec['sel_publish_key'] = array('type' => 'string',
'size' => 32);
return $fieldarray;
}
function _cm_getInitialData ($fieldarray)
// Perform custom processing for the getInitialData method.
// $fieldarray contains data from the initial $where clause.
{
$fieldarray['sel_publish_key'] = $_POST['sel_publish_key'];
return $fieldarray;
} // _cm_getInitialData
function _cm_getPkeyNames ($pkey, $task_id, $pattern_id)
{
$pkey_array[] = 'sel_publish_key';
return $pkey_array;
}
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Where else could I try? I can see the post of the sel_publish_key, but I am not sure in which function to set it!
I have looked for many examples, but have yet to find one that works in this multi4, update4 fashion.
Thanks,
dan
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| Re: Update 4 [message #927 is a reply to message #925] |
Mon, 09 July 2007 16:11 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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Step through with your debugger to see what happens when you press the navigation button. You should see the contents of the $_POST array being merged wth both the outer and inner entities, then the $selection string is built using the details of the selected entries before being passed to the UPDATE4 function.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #933 is a reply to message #932] |
Tue, 10 July 2007 04:58 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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No. The code in _cm_getInitialData() is redundant as you do not access the $_POST array directly in that manner. The contents of the $_POST array will be inserted into the inner entity's $fieldarray by code that is in the MULTI4 controller - that is what the change I made to the array_update_indexed() function is for.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #938 is a reply to message #937] |
Tue, 10 July 2007 13:54 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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Senior Member |
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I have just tried modifying a MULTI4 transaction to reproduce the solution I have described, and it works exactly as I expected. I tested it using Radicore version 1.25.0 plus the updated version of 'include.general.inc' which I attached to an earlier post in this thread.
To make sure you are not missing something simple this is what I did:
- the outer entity of the MULTI4 function contains a field called 'sel_publish_key' which appears on the screen and is amendable by the user. This means that when a button is pressed the $_POST array will contain the current value for 'sel_publish_key'.
- when I select entries from the inner entity of the MULTI4 function and press a navigation button, the contents of the $_POST array is then merged with the contents of both the outer and inner entities before the button is processed.
- the inner entity of the MULTI4 function does not contain a field called 'sel_publish_key', so its value will not, by default, be added to $fieldarray within the inner entity. I can change this behaviour by adding the following code to the inner entity:
function _cm_changeConfig ($where, $fieldarray)
{
$this->fieldspec['sel_publish_key'] = array('type' => 'string', 'nondb' => 'y');
return $fieldarray;
} // _cm_changeConfig
- when the navigation button is pressed the following lines in 'std.multi4.inc' will be executed:
116: $inner_post = getPostArray($_POST, $dbinner->getFieldSpec());
117: $inner_data = array_update_indexed($inner_data, $inner_post);
You need to inspect this with your debugger to ensure that $_POST contains a value for 'sel_publish_key', and that $inner_data is updated so that every row now contains the value for 'sel_publish_key'.
- the next line in 'std.multi4.inc' calls the childform() function, which will pass control to the form associated with the navigation button which has been pressed. The processing should go through the code appearing at line 179:
if (isset($post['select'])) {
// convert selection into SQL where format
$pkey_array = $dbobject->getPkeyArray(null, $task_array);
$selection = selection2where($pkey_array, $post['select']);
} else {
The call to getPeyArray() contains the call to _cm_getPkeyNames() which should contain the following:
function _cm_getPkeyNames ($pkey_array, $task_id, $pattern_id)
{
$pkey_array[] = 'sel_publish_key';
return $pkey_array;
} // _cm_getPkeyNames
This ensures that when the $selection string is built it will contain the value for 'sel_publish_key'. This string will then be passed to whatever function was activated by the navigation button.
All I had to do to get this to work was include 'sel_publish_key' in the _cm_changeConfig() and _cm_getPkeyNames() methods of the inner entity, so unless you are doing something really peculiar it should be just as easy for you.
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #939 is a reply to message #938] |
Wed, 11 July 2007 11:15 |
danpoleary
Messages: 49
Registered: February 2007
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Member |
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Hi Tony,
Thanks,
I rebuilt the whole thing. The following describes what I have right now.
In the multi4 , I access an extended outer class of sources_destination which extends sources, by adding the sel_publish_key field, and allows me to select a value.
for the inner class (filelist), I have exactly what you have above, and that part works well, except my debugger will not allow me to see the contents of $inner_data (komodo problem)
$_POST does contain the value I selected for that key.
When the update4 is processes, I can see the value being passed in, but I get this error:
| Quote: |
2007-07-11 11:11:15
Fatal Error: MySQL error: 1054 - Unknown column 'sel_publish_key' in 'where clause' (# 1054).
SQL query: SELECT SQL_CALC_FOUND_ROWS * FROM filelist WHERE ( unique_sequence='1323' AND sel_publish_key='IFC' ) ORDER BY filename asc
Error in line 407 of file 'C:\apache\htdocs\search\includes\dml.mysqli.class.inc'.
Host Info: localhost via TCP/IP
Server Version: 5.0.27-community-nt
Client Info: 5.0.22, Client Encoding: latin1
Script: /search/search/filelist_autopublish(upd4).php
User Id: MGR
Remote Address: 127.0.0.1
Request URI: /search/search/filelist_autopublish(upd4).php?session_name=m enu2
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So how do I get rid of the sel_publish_key from within the select statement of the filelist for this method?
Thanks, I am much closer, not sure why it did not work before, but it may have been because I was 4 versions behind of Radicore.
Dan
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| Re: Update 4 [message #940 is a reply to message #939] |
Wed, 11 July 2007 12:08 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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Senior Member |
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This means that the table class you are using in the UPDATE4 function contains a reference to 'sel_publish_key' in its $fieldspec array, and this reference must have been added manually in that class.
If you remove this reference then 'sel_publish_key' will automatically be removed from the $where string during the processing of the initialise() method.
Presuming that you want to use the value for 'sel_publish_key' in the updateMultiple() method but not the getData() method you will have to save the value as a member variable and remove it from the $where clause before $DML->getData() is performed. You can do this either in the _cm_initialise() method or the _cm_pre_getData() method. Here is an example:
function _cm_pre_getData ($where, $where_array, $fieldarray=null)
{
$this->sel_publish_key = $where_array['sel_publish_key'];
unset($where_array['sel_publish_key']);
$where = array2where($where_array);
return $where;
} // _cm_pre_getData
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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| Re: Update 4 [message #941 is a reply to message #940] |
Wed, 11 July 2007 12:32 |
danpoleary
Messages: 49
Registered: February 2007
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Member |
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Yes, success,
Git it, thank you. It appears my root problem in trying to figure it out was that I was to many versions back in Radicore. Once I solved that, things started to fall into place.
One last question, When I select one record from the inner, the update works fine, but when I select multiple records, only the first one gets updated.
I checked the sql, and it only has the first records unique_sequence value in the 'where'. Should the update4, not pass all selections into the POST?
Dan
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| Re: Update 4 [message #943 is a reply to message #942] |
Wed, 11 July 2007 13:34 |
AJM
Messages: 2371
Registered: April 2006
Location: Surrey, UK
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Senior Member |
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The _cm_pre_updateMultiple() method is called just once so that you can manipulate ALL the occurrences in $fieldarray. Each occurrence is then passed to the updateRecord() method, so the _cm_pre_updateRecord() method is called separately for each occurrence.
It is up to you to decide which is the most appropriate place to put your code.
Are you sure that the selection string being passed from the MULTI4 to the UPDATE4 contains references to all the records which you selected? It should be in the format (selection1='..') OR (selection2='..') OR (selection3='..')
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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