I'm newbie in ZF and have some stupid question:
What's the best solution to calculate rows in the table if I work with inherited object of Zend_Db_Table_Abstract class?
For my first web application I use QuickStart tutorial (link text) so if I want to calculate count of rows in the table in controller the simplest solution will be something like that:
$guestbooks = new Default_Model_GuestBook();
$count = count($guestbooks->fetchAll());
But I don't think that fetchAll() is the best solution just to calculate rows in the table because GuestBook table can be really huge. May be it is possible to use something much more easy and simple?
I found in manual that it is possible to work direct with DB Adapter (like $db->query("SELECT COUNT(*) FROM GuestBook");), but in QuickStart tutorial I haven't got that object in controller and I really don't want to create it only for one simple action.
Will be waiting for suggestions!
Thanks
Your model already contains DB Adapter because it also works with DB. You can get access to DB Adapter using getAdapter() method.
$questbooks->getAdapter()->query("SELECT COUNT(*) FROM GuestBook");
Related
In my model I want to loop through the database which contains multiple columns (see example) by an event. The idea behind it is that I want to create dynamic events based on the rows in the database.
But I've no clue how to iterate through a database in anylogic and also was not able to find an example of a loop with a database.
The dummycode of my problem would look something like this:
For order in orderdatabase:
Create order based on (order.name, order.quantity, order.arrivaltime, order.deliverylocation)
Where order in the loop is every row of the database, and the value on which the creation is based based on the different column values of that specific row.
Can somebody give me a simple example of how to create such a loop for this specific problem.
Thanks in advance.
Use the database query wizard:
put your cursor into a code field
this will allow you to open the database wizard
select what you need (in your case, you want the "iterate over returned rows and do something" option
Click ok
adjust the dummy code to make it do what you want
For details and examples, check the example models and the AnyLogic help, explaining all options in detail.
I have firestore data structure like this:
How to achieve to get ts_app_theme with name default only?
I already try query like this
SELECT * FROM ts_app_theme WHERE __key__ HAS ANCESTOR KEY(ts_app_config, '$merchant_key') AND __key__ = KEY(ts_app_theme, 'default')
it didn't work..
I can do this
SELECT * FROM ts_app_theme WHERE __key__ HAS ANCESTOR KEY(ts_app_config, '$merchant_key')
but will return another document in ts_app_theme if I have more document other than default later..
Thank you..
GQL is for Firestore in Datastore mode. You can find it in Google docs here and here. Datastore data model has kind which that might be compared to SQL table and entity which can be compared to SQL row. Due to this structure it's possible to use SQL like querying.
While Firestore in general, like on your screenshot, is NoSQL database. As of it concept it does not contain schema which is could be use in building SQL queries. BTW I wonder where you run those queries, possible there is some nice tool I don't know of.
Regarding querying Firestore I found nice tutorial series starting with this.
I have been struggling for some time now and I can't really find anyone having done the same thing before.
I'm creating a backend module in TYPO3 7.6 which belongs to a shop extension.
The shop extension with the backend module was created with the extension builder. The shop has the following three models:
Product (products which can be ordered through the shop)
Productsorder (link to the customer)
ProductsorderPosition (the ordered product, the ordered amount and size and the link to the Productsorder)
The customers are of a model type from a different extension. These customers are linked to fe_users.
Now what I wanna do in my backend module is getting an overview to all these orders listed with the customer, some information about the fe_user and of course the product. I have created a sql-query, which does exactly that:
SELECT p.productname, p.productpriceperpiece,
pop.amount, pop.size,
h.name, h.address, h.zipcode, h.city, h.email, h.phone,
f.first_name, f.last_name, f.email
FROM `tx_gipdshop_domain_model_productorderposition` AS pop
JOIN `tx_gipdshop_domain_model_product` AS p ON pop.products = p.uid
JOIN `tx_gipdshop_domain_model_productsorder` AS po ON pop.productorder = po.uid
JOIN `tx_gipleasedisturbhotels_domain_model_hotel` AS h ON po.hotel = h.uid
JOIN `fe_users` AS f ON h.feuser = f.uid
If I use this query from the product repository it gives back the right amount of data records but they're of type product and the products are all "empty" (uid = 0 etc).
I've added an additional action for this in the product controller (getOrdersAction) and in the repository containing the query I've added a method findAllOrders.
I'm still rather a beginner in TYPO3 but I can somehow understand why it returns data sets of type Product when the query is called from the ProductRepository. But what I do not know is how I can get all the information from the query above and list it in the backend module.
I've already thought about moving the query to the ProductsorderPositionRepository but I would probably be faced with a similar problem, it would only return the information from the ProductsorderPosition and everything else would be left out.
Can someone point me to the right direction?
Would I need to create another model with separate repository and controller? Isn't there an easier way?
If you need more information, just ask! ;)
First of all, you are doing a joined query with subsets of data mixed from multiple tables. There is nothing against this.
Because of this, there is no "model" which has the mixed datasets.
If you are using the default query thing in a repository, the magic behind the repository assumes that the result of the query statement reflects the defined base model for this repository.
Moving the query function to another repository does not solve the problem.
You have not provided the code snippet you are executing the sql statement, so I assume you have used the query thing in the repository to execute the statement. Something like this:
$result = $query->statement('
SELECT p.productname, p.productpriceperpiece,
pop.amount, pop.size,
h.name, h.address, h.zipcode, h.city, h.email, h.phone,
f.first_name, f.last_name, f.email
FROM `tx_gipdshop_domain_model_productorderposition` AS pop
JOIN `tx_gipdshop_domain_model_product` AS p ON pop.products = p.uid
JOIN `tx_gipdshop_domain_model_productsorder` AS po ON pop.productorder = po.uid
JOIN `tx_gipleasedisturbhotels_domain_model_hotel` AS h ON po.hotel = h.uid
JOIN `fe_users` AS f ON h.feuser = f.uid', NULL);
or have used the query building stuff.
First solution
The first and simpliest solution would be to retrieve the result as plain php array. Before TYPO3 7.0 you could have done this by using this:
$query->getQuerySettings()->setReturnRawQueryResult(TRUE);
With TYPO3 7.0 this deprecated method was removed from the core.
The only way is to define the query and call $query->execute(TRUE); for now.
This should return the data in pure array form.
This is the simpliest one, but as we are in the extbase context this should not be suffering enough.
Second Solution - no, just an idea that I would try next
The second solution means that you have some work to do and is for now only a suggestion, because I have not tried this by myself.
Create a model with the properties and getter/setters for the result columns of your query
Create a corresponding repository
Third solution
Not nice, but if nothing else works, fall back to the old TYPO3 v4 query methods:
$GLOBALS['TYPO3_DB']->exec_SELECTgetRows([...]))
and replace this with the QueryBuilder in/for TYPO3 v8.
This is really not nice.
I hope I could direct you to the right way, even if not giving a full solving solution.
I have a large table which inserts data into the database. The problem is when the user edits the table I have to:
run the query
use lots of lines like value="<cfoutput>getData.firstname#</cfoutput> in the input boxes.
Is there a way to bind the form input boxes to the database via a cfc or cfm file?
Many Thanks,
R
Query objects include the columnList, which is a comma-delimited list of returned columns.
If security and readability aren't an issue, you can always loop over this. However, it basically removes your opportunity to do things like locking certain columns, reduces your ability to do any validation, and means you either just label the form boxes with the column names or you find a way to store labels for each column.
You can then do an insert/update/whatever with them.
I don't recommend this, as it would be nearly impossible to secure, but it might get you where you are going.
If you are using CF 9 you can use the ORM (Object Relation Management) functionality (via CFCs)
as described in this online chapter
https://www.packtpub.com/sites/default/files/0249-chapter-4-ORM-Database-Interaction.pdf
(starting on page 6 of the pdf)
Take a look at <cfgrid>, it will be the easiest if you're editing table and it can fire 1 update per row.
For security against XSS, you should use <input value="#xmlFormat(getData.firstname)#">, minimize # of <cfoutput> tags. XmlFormat() not needed if you use <cfinput>.
If you are looking for an easy way to not have to specify all the column names in the insert query cfinsert will try to map all the form names you submit to the database column names.
http://help.adobe.com/en_US/ColdFusion/9.0/CFMLRef/WSc3ff6d0ea77859461172e0811cbec22c24-7c78.html
This is indeed a very good question. I have no doubt that the answers given so far are helpful. I was faced with the same problem, only my table does not have that many fields though.
Per the docs EntityNew() the syntax shows that you can include the data when instantiating the object:
artistObj = entityNew("Artists",{FirstName="Tom",LastName="Ron"});
instead of having to instantiate and then add the data field by field. In my case all I had to do is:
artistObj = entityNew( "Artists", FORM );
EntitySave( artistObj );
ORMFlush();
NOTE
It does appear from your question that you may be running insert or update queries. When using ORM you do not need to do that. But I may be mistaken.
i am wondering how can i select specific number of child objects instead of taking them all with include?
lets say i have object 'Group' and i need to select last ten students that joined the group.
When i use '.Include("Students"), EF includes all students. I was trying to use Take(10), but i am pretty new to EF and programming as well, so i couldn't figure it out.
Any suggestions?
UPDATED:
ok, i have Group object already retrieved from db like this:
Group group = db.Groups.FirstOrDefault(x=>x.GroupId == id)
I know that i can add Include("Students") statement, but that would bring ALL students, and their number could be quite big whether i need only freshest 10 students. Can i do something like this: var groupWithStudents = group.Students.OrderByDescending(//...).Take(10);?
The problem with this is that Take<> no longer appears in intellisense. Is this clear enough? Thanks for responses
I believe Take(10) would be correct.
var Students= (from c in Groups
orderby c.DateAdded descending
select c).Take(10);
My experience with Take though is that it generates some awful sql.
EDIT:
see if this blog post helps, it talks of conditional includes.
http://blogs.msdn.com/b/alexj/archive/2009/10/13/tip-37-how-to-do-a-conditional-include.aspx
Couldn't make Gratzy's suggestion with conditional include work... and found the solution here: http://msdn.microsoft.com/en-us/library/bb896249.aspx
Query would look like this:
group.Students.Attach(group.Students
.CreateSourceQuery()
.OrderByDescending(x=>x.JoinDate)
.Take(10));
This is exactly what i was looking for!
Thanks for all responses anyway!