I'm making a website with two different databases. Let's say one is DB1, and the other is DB2. I've set up my database.php in the config folder, so they each have the correct host/password/username/database etc with db['DB1']['hostname'] and the other db['DB2']['hostname'] etc, so I'm pretty sure I've got that part right.
According to CodeIgniter docs, I'm supposed to do $this->load->database('DB1') to get that one to work within my model. First, I put it in my constructor for my model, and it didn't work. Then I tried putting that line as the first line of every function in the model, and that didn't work. I'm still getting this error:
Error Number: 1146
Table 'DB2.stores' doesn't exist
When I'm trying to use DB1, and have done $this->load->database('DB1') as the first line of the model's function. Does anyone know what I'm doing wrong? Thanks!
There are a couple of caveats I ran into when I last tried to do that.
In your model constructor, load DB1 and DB2 as
$this->DB1=$this->load->database('DB1',true) //<-- notice the true parameter
$this->DB2=$this->load->database('DB2',true) //<-- notice the true parameter
and then use $this->DB1->get()->where()->result_array() etc.etc.
Caveat 2
make sure persistent connections are off... they are on by default in CI
$db['DB2']['pconnect'] = FALSE;
and
$db['DB2']['pconnect'] = FALSE;
in your application/config/database.php file
hope that helps...
Related
I'm trying to modify one of the FireDAC sample projects in order to use an existing SQLite file as the database source. The sample works fine unmodified and connects to its database. However, I can't figure out where the database it connects to is specified, in order to change it.
According to the documentation, there should be a Database property on the TFDPhysSQLiteDriverLink component. There isn't: it doesn't exist. I even converted the form to text and looked through all components' customized properties, and there's no path defined anywhere. Nor is there in code - the sample is very small and there's no path defined at all.
The other option on the documentation is to include the FireDAC.Phys.SQLite unit, although that doesn't explain how to set the database, since as far as I can tell that unit just includes the component. And when I search for Database properties (see attached image) none of them in any class in that unit seem to be quite what I'm after. The closest is a string that's for a backup component - I doubt that's what I need. There is a SQLiteDatabase property in the TFDPhysSQLiteConnection class but that's read-only.
List of all Database properties defined in the FireDAC.Phys.SQLite unit
I also tried creating a temporary connection definition at runtime, by double-clicking the TFDConnection component. That only gives an exception:
Exception double-clicking the TFDConnection component
The only solution to this I found is in the XE5 documentation, where it says to set the $(PUBLICDOCUMENTSDIR) environment variable. I already had to do that to get the demo to run (previously, it threw the same exception on the line FDConnection1.Connected := True;; it doesn't now, the demo runs perfectly at runtime.) That change obviously hasn't affected the designer, and I don't even know if I'm looking in the right place, since after all the documentation talks about setting the Database property.
So I'm stumped. Where does it set the database? It's not in the DFM or any streamed properties; it's not in the property defined by the documentation (TFDPhysSQLiteDriverLink.Database doesn't exist, nor does anything that looks like it); it's not in the TFDConnection designtime editor (even though it throws an exception, a file specified as a property here would appear in the streamed DFM, I'd think); it's not in code; ...where else can it be?
(I have never used FireDAC before so am a complete noob, btw. I'm self-teaching via the documentation and samples.)
You don't actually need a TFDPhysSQLiteDriverLink for a minimalist FireDAC project, and using one rather confuses the issue if you're trying to make a connection to a database for the first time.
Try this:
Make a note of the name including path of a Sqlite db.
Start a new VCL project and drop a TFDconnection, TFDQuery, TDataSource & TDBGrid onto its form and connection them up. Set the TDFQuery's Sql to select * from some table you know exists in the db.
Right-click the TFDConnection and select Connection editor from the pop-up.
Set the DriverID to SQLite and insert your db name into the Database Value box.
Open the FDQuery.
If you compile and run the project, you'll get an exception telling you a class factory for a TFDGUIxWaitCursor is missing (this is the sort of thing I love about FireDAC), but that's easily fixed by dropping one onto your form. Notice that you don't have to connect it using the Object Inspector to any of the other FD components.
After that, you can add a TFDPhysSQLiteDriverLink and set its DriverID to the same as for the TFDConnection.
I ussualy roll my own class and handle the OnBeforeConnect event
Something like this
procedure TSQLiteConnection.SQLiteConnectionBeforeConnect(Sender: TObject);
begin
if not(TFile.Exists(DatabaseFilePath)) then
Params.Values['OpenMode'] := 'CreateUTF16'
else
Params.Values['OpenMode'] := 'ReadWrite';
Params.Values['Database'] := DatabaseFilePath;
DriverName := 'SQLite';
end;
The DatabaseFilePath is just a string field of the class, so basically you can put any file path there
TSQLiteConnection is, of course, a TFDConnection descendant
I'm new in CakePhp but experienced in CodeIgniter. I created a controller in "WelcomeController.php" in controller directory and run the page. I got two errors
1. Error: The view for WelcomeController::index() was not found.
2. Error: Confirm you have created the file: C:\xampp\htdocs\myc\app\View\Welcome\index.ctp.
My question
Why I am getting this error even though I have supplied index() function?
In codeigniter we may not create a directory for a view. I don't want to create a directory "Welcome" in view. I there any provision provided?
In Cakephp you have to create view for function or here it called action. In your case, Create index.ctp on App->View->Welcome folder. This Getting Start
will give you a basic idea.
1) You're getting that error because your missing the view, not the controller function. To fix, do what the error suggested:
Confirm you have created the file: C:\xampp\htdocs\myc\app\View\Welcome\index.ctp.
2) "I don't want to create a directory "Welcome" in view. I there any provision provided?".
Not really... I mean, no if you want that action to have a correspondent view to put the content. Otherwise you can use $this->autoRender = false to not show anything... But that'll mean the url localhost/welcomes/index will be blank.
I recommend you read the basics as Fazal said. I know every framework can give us "quirks" and we end up expecting every other framework to work the same way we are used to, but try to adapt to the cake-way.
Btw, should be "WelcomesController", according to cake conventions
Be sure that you have all the files and directories necessary for the modal, controller and view to link up correctly i.e.: Create the folder called welcome(s) in your views directory with an index.ctp file. This should get rid of that error.
Check out this brilliant blog tutorial: Link
I think I screwed up somewhere while trying to create a django-cms plugin and now I am unable to go back. The plugin (called sbbplugin) seems to be "working" (it gets displayed) but whenever I try to publish the site I get the following error:
DatabaseError at /admin/cms/page/18/publish/
relation "cmsplugin_sbbmodel" does not exist
LINE 1: ...id", "cmsplugin_sbbmodel"."cmsplugin_ptr_id" FROM "cmsplugin...
^
I tried removing the plugin but I can not do it because the page is not published. My plugin has no models or anything. Also I'm unable to remove the plugin from the page by clicking delete. Seems like the database is broken. Since I am not experienced enough to know what information you need I would appreciate it, if you could give me further instructions on what I should do.
Update: I think the problem is that I tried to use a model (sbbmodel) which I deleted. Should I try to add the model again? If so what should I do to fix the database? Do I have to run a migration for my app? Do I even have to register the plugin as an app?
Update2: So I tried to add the model again and migrate the app but I get the following error:
CommandError: One or more models did not validate:
sbbplugin.sbbmodel: Accessor for field 'cmsplugin_ptr' clashes with related field 'CMSPlugin.sbbmodel'. Add a related_name argument to the definition for 'cmsplugin_ptr'.
sbbplugin.sbbmodel: Reverse query name for field 'cmsplugin_ptr' clashes with related field 'CMSPlugin.sbbmodel'. Add a related_name argument to the definition for 'cmsplugin_ptr'.
S.sbbmodel: Accessor for field 'cmsplugin_ptr' clashes with related field 'CMSPlugin.sbbmodel'. Add a related_name argument to the definition for 'cmsplugin_ptr'.
S.sbbmodel: Reverse query name for field 'cmsplugin_ptr' clashes with related field 'CMSPlugin.sbbmodel'. Add a related_name argument to the definition for 'cmsplugin_ptr'.
which I do not really understand because I never specified a foreign key. I assume it is because I inherit from CMSPlugin. Any help?
I finally fixed it. First I removed every file that I created for my plugin. Then I deleted every instance of my plugin that was saved in the database. Unfortunately that did not solve the problem and I was still getting the same error even after restarting the server.
What did the trick was to go into phpPgAdmin and select all tables than choose "correct". It did not tell me what exactly the issue was but afterwards everything was back to normal again. So if you somehow run into the same problem, just "correct" your database automatically.
I am using the cake bake command to create my fixture and Test models. I have done it successfully with one of my models but i am having troubles with another one.
I dont know why, it tries to work with the default DB instead with the test one that i have already defined and that is the one used by the first model i tested.
Both Test models, the one which works well and this 2nd one which doesn't, have been created with cake bake and they look exactly the same.
Both of them have this in their fixture class:
public $import = array('records' => true, 'connection' => 'test');
Test defines the connection to my test database.
What can be the problem?
I have experiment something weird. In my test model if i use the singluar instead of the plural, it works with the default DB BUT if i change it to plural it works with the test DataBase. (but it can not call any method from the model, just defined methods such as find()).
For example:
public function setUp() {
parent::setUp();
//uses the default DB (i dont know why)
$this->Post = ClassRegistry::init('Post');
print_r($this->User->find('all'));
$this->Post->updatePostsStatus(1); //works well
//uses the default Test Database (i dont know why either)
$this->Post = ClassRegistry::init('Posts');
print_r($this->User->find('all'));
$this->Post->updatePostsStatus(1); //doesn't work. No function found.
/*SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'updatePostsStatus' at line 1*/
}
Thanks.
I HAVE UPDATED IT.
LAST UPDATE AND SOLUTION
The problem was the bad initialization of the Post Model constructor.
Using the plural was not relevant. It is like using any non existent model. It will always get the test database.
The answer for the good initialization of the constructor is here:
How to override model's constructor correctly in CakePHP
That sort of MySQL error can be very misleading in CakePHP.
Basically the actual problem is with the line $this->Post->updatePostsStatus(1); Specifically it's that eitherthe Post model or updatePostsStatus() method of the posts model doesn't exist.
You basically have a typo on this line, check the method name. Should it be updatePostStatus? (no plural on posts?)
For some reason, if you try to call an undefined method on a model in CakePHP, instead of reporting the method is not found, the "automagicness" of CakePHP kicks in and bizarrely it tries to push the unfound method name straight into MySQL.
Basically, because CakePHP cannot find the $this->Post->updatePostsStatus(1); method, it is actually trying to execute a MySQL query of updatePostsStatus ie mysql_query("updatePostsStatus');, which is why we are seeing this wierd database error. Chances are you've just misspelled the method name.
If the method name is still not the problem, it's something to do with the Posts model not being instantiated correctly. Although that seems doubtful as long as you got all the names right. It is definitely not a database issue, just Cakes lame way of handling unknown class methods automagically.
For some reason my cakephp application is not showing any of the queries made to the database. It prints the table fine, but there are not records. What could cause this?
Check to make sure you are pulling the records correctly.
$models = $this->Model->find('all');
// or
$this->Model->recursive = 0;
$this->set('models', $this->paginate());
Then when you add them in the view, be sure you are looping through them correctly:
foreach ($models as $model) {
echo $model['Model']['field_name'];
}
UPDATE
To show the SQL statements, be sure you have the following set in core.php
Configure::write('debug', 2);
Also, in the Layout, besure you have this included someone between the <body> and </body> tags:
<?php echo $this->element('sql_dump'); ?>
I assume that you are getting an empty table with just the "Nr","Query","Error", etc. column headers?
You are getting the empty table because you have "Configure::write('debug',0);" set somewhere before you have "Configure::write('debug',2);" set. Find the first instance of it and delete it or change it to "2".
I know that you have long since fixed this problem but hopefully it helps somebody else in the future.
The CakePHP debug kit can help you. After you install it, you will notice a small (pie-chart) icon on the top right of your CakePHP pages. Clicking on that will allow you to see various useful information, and most importantly for this issue, all the SQL queries that occurred in the back-end upon the page loading.
I faced a similar problem in cakephp. I found that debug($variable) has limitation to the content size. Since you are fetching huge sized content from database, it is not able to print. Try doing print_r($variable) instead. To format it properly, you can do like this
echo "<pre>".print_r($variable)."</pre>";