lookup in Sharepoint, query SP list in workflow - sharepoint

I have two Sharepoint lists - ListA and ListB.
ListA has columns productName, productType. ProductType is made of choices (TypeA, TypeB, TypeC). Each product must belong to only one type. He gives Product Name and ProductType(from Selection) during adding products to ListA. ListB has columns RequestName, RequestDate, ProductName. ProductName is simply lookup to the ListA.
In ListB while adding new item,I first want to select productType and then display products of this type only. But, I couldn't find any ways to do this. Is there any way to do this, even programmatically.
OR alternatively, actually I don't need productType information in ListB. I am making workflow that uses ListB and that starts automatically when I add requests to ListB (he selects productName, and give RequestName and RequestDate). Then, in workflow, I have to check if the productName is of typeA or typeB or typeC, since I need this productType information to make some decisions in Workflow. Is there any way to get productType information from only productName using ListA and ListB.
Since this productName is unique, in Sql, it would be something like this
select productType from ListA where productName="selectedProduct"
but I have no clue if I can do some query in Lists in SP and get this result, store it in variable and use this later on.
Thanks
Note : For someone interested in cascading lookups in Sharepoint using Infopath forms, look here http://blog.libinuko.com/2010/07/21/sharepoint-2010-how-to-create-cascading-lookup-field/

If you have medium to advanced programming skills, you can achieve this by creating a custom field type. The basics are outlined in this article: http://msdn.microsoft.com/en-us/library/gg132914.aspx
Basically, a custom field type is made of:
an xml file defining the field name, properties and some other settings
a class inheriting from SPField (this is the actual field)
a field control (this is what you see on the new/edit listitem forms)
a field editor control (this is what you see when you create or modify the field, where you set the field properties)
a field value class
Some of those components are optional. In your case, you'll probably want to create a field that inherits from SPFieldLookup and create a custom field control and a custom field editor control. There's no need for a custom field value class, since you'll use the SPFieldLookupValue class.
A quick search on Google (or the search engine of your choice) can give you lots of detailed information and tutorials about the art of creating custom field types.

I would suggest using one of the cascading lookup fields available as 3rd party products, such as this one (i admit, this one is made by our company). Then you can have your product name column filtered by the Product Type column. No custom development required, you will just need to make some small changes to your lists (such as create a Product Types list and look it up, instead of using a choice column)

Related

Finding Lookup item numerical values in MS Dynamics

I have a site powered by ExpressionEngine 2.5.x, using Freeform, integrated to post form data to MS Dynamics CRM 2011. The extension is nicely scalable, I can change the mapping, all that excellent stuff. My problem is how to find mapping values for Lookup fields in MS Dynamics.
I am trying to map form fields from the site forms, into MS Dynamics. Some of the fields are Lookups, in MS Dynamics. Our mapping calls out the numerical value of the Lookup item, rather than its name. (Which is good, because ppl can change the text names in the MS Dynamics console without breaking the mapping.)
My question is: I know how to find the actual back-end field names of form fields within MS Dynamics. But how to I find the numerical values of the picklist items and lookup fields? Say I have a Lookup field, for Lead Source (called campaignid). The items are:
web
online
radio ad
flyer
word of mouth
other
I know that when I edit options in an option set, I can see their numerical value. Where can I edit options in a lookup field? I've tried looking under Settings > Customizations > Customize the System, but didn't see anything called lookup.
Lookups are pointers to entities. They do not have numerical values like regular option sets. So I guess that you will have entity called Campaign (or lead) so you can check which campaigns exist in the crm DB where each entity will have view in the DB.
Let's see if i understand your question. You don't have a Lookup option like Option Set because a lookup is consequence of a relationship 1:N between two entities. So for edit a lookup you need edit a record of a entity. In lookup fields you don't have numerical values, you have guid that represent individually a record, so in a record a lookup is stored in database as a guid. Check this video.
Check here how find this guid with the record open.
A look-up field is, roughly speaking a pointer to en entity (in C# it's referred to as EntityReference instead of Entity) and it consist mainly of a guid and logical name of something.
Usually, in the code, when you have an entity, in order to access the fields of its lookup-connected entity, you'll need to make an extra query for that.
So, if you have a Contact instance and need to see the address of its parent customer, you'll have to get the guid and logical name (in this case it'll be Account) and retrieve the data for it separately.
EDIT:
Suppose that you have created an instance of Contact entity and you'd like to access its lastName field. Then you can simply refer to it as follows.
var value = Xrm.Page.getAttribute(“lastName”).getValue();
On the same form, there's also a field that refers to an Account instance (its name is parentCustomerId. Suppose now that you'd like to get the fullName field of the Account. One could expect the following to work.
var account = Xrm.Page.getAttribute("parentCusomterId").getValue();
var name = account.getAttribute("fullName").getValue();
However, that's not going to work, because the parentCutomerId is a look-up field. It means that it only contains a guid (a pointer, a reference) identifying an other entity. You'll have to use it (the guid) in order to fetch the instance that the look-up is "mentioning". Then you'll be able to check it's properties.

Is it possible to create a Custom Column that will take values from a specific view of a list?

I have a list of products that has two columns, product and product family.
I want to create another list that uses this first list as a lookup for one of the columns. This I can do, i.e. I create a custom column and then use the "Add from existing site columns" linko the "List Settings" page of the second list.
However, what I'd really like is that the custom column only proposes products that belong to a specific product family. I can create a View in the first list which allows me to display only the products in a specific family. However I don't see any way to specify only this view when I create the custom column.
Anyone have any ideas ?
Best regards,
Colm
If I understood you correctly you are trying to make a dynamic select field that will populate based on what the user has chosen in a select field before it. You will not be able to configure this with out of the box SharePoint. It is possible to add some javascript to a form to achieve this. I believe you can also do this in InfoPath but I am double checking that.

Dynamics CRM 2011: Extended lookup for a field in "Create New" form

I have the following scenario:
A user wants to create a new record of entity CustomEntity1. One of the fields on the "Create New" form is a reference to the entity of type CustomEntity2.
Now, there is a built in lookup where thety can search by name, or filter the options to a predefined view. This doesn't help, because the user needs to get the name (or names) of CustomEntity2 which satisfies a set of criteria based on the fields in CustomEntity2.
Is there a way to incorporate this in "Create New" form for CustomEntity1?
And the question again, a bit less abstract:
The user needs to create a new record of type CustomerAccount. In doing this he/she needs to fill a field called Group. This should be looked up in a list of existing groups, based on several criteria - Type, Region, Budget and so on. Is there a way for the user to enter this criteria while creating the new record, and not go separately to the list of Groups and run a report to find the candidates?
You can use the addCustomView method of the lookup control to filter the options based on the fetchXML and layoutXML that you provide.
One way to supply the right conditions to your custom fetchXML is to duplicate the Type, Region, and Budget fields in the CustomerAccount form, so that when the lookup dialog is opened, it filters the existing Groups based on the values you've selected in the CustomerAccount form.

InfoPath won't let me customize forms for list

When i try to create a custom InfoPath form on my Orders List I get the following error:
The SharePoint list form can't be customized with InfoPath because fields of an unsupported data type are marked as required, or because fields are corrupted. In SharePoint, try deleting the columns or editing the column properties to remove the required attribute. - Product (Lookup)
Additional information:
The Site contains;
Two Site Content types Product and Order. Order does have a lookup field to product, it is a optional field so NOT required.
Two Lists. A Products list with Product as Content Type and an Orders list with Order as Content type.
The Site Collection has the SharePoint Server Enterprise Site Collection features activated. Creating custom InfoPath forms for the Products lists works without any problem.
I tried to delete my List and recreate it but it i still get the same error. Hope someone can help me with this issue.
Thanks
Apperantly this was due to to the Title field in the Content Type being a required value. Changing the lookup to the items ID solved it.
This worked for me. But if you don't want to use the ID field in your views or on the form, here are a couple tips to replace it with the Title (or other column) in your lookup field...
Replacing the IDs in the form:
In InfoPath, create a new data source for the lookup field. Follow through the prompts to find the list to lookup. Once it's added, change the Value to ID. This will now set the dropdown list in the form to display the Title values as well as properly link the IDs in the list.
Use Title (linked to item) in your list view without instead of the ID:
Create a new index in the list you're looking up for the field you want to be linked. Then go back to the main list and change the lookup back to Title (linked to item). Note that this will again break the ability to edit the form in InfoPath. Changing it back to ID will allow InfoPath editing again. Then just change it to Title (linked to item) again when done. There's probably a "right" way to do this but it works for me.
Apperantly this was due to to the Title field in the Content Type being a required value. Changing the lookup to the items ID solved it.
Simple solution to this is, create a lookup field using SharePoint List settings, and then edit the form with infopath for further design related changes. When you creates lookfield using infopath this gives above issue, i could resolve it by creating list column and then editing form with InfoPath.

Sharepoint: Integrity of lookup fields after a list import

I got a question about the behavior of lookup fields when importing data. I wonder how the lookup fields behave when the list they point to is being replaced/imported. To explain the issue, I will provide a quick example below:
As example, assume we have these two sharepoint lists:
Product Types
-------------
+ Type Name
+ Code Nr
+ etc
Products
--------
+ Product Name
+ Product Type (Lookup field to list "Product Types")
+ etc
In my scenario, the Products List contains production data on the production Sharepoint platform. It is filled with data by the business users.
However the Product Types list contains rather static data and is maintained by the developer.
Now after a development cycle, the developer wants to deploy his new webparts and his new data (product types list). The developer performs the following procedure:
On the dev machine: Export "product type" list using stsadm
On the production machine: Delete all items in the "product type" list
On the production machine: Import the "product type" list using stsadm
This means we basically replace the "product type" list on the production server while keeping the "product" list as it is.
Now the question:
Is this safe? Will the lookup references break under certain circumstances?
Any downside of this import/export procedure?
What happens if someone accesses a "product" during the import? Will the (now invalid) reference clear its own content (become a null value).
What happens if the schema of the "product type" list changes (new column)? Will this cause any troubles?
Thanks for all feedback and suggestions!
Update 1
The imported "product type" items have the same IDs as previously deleted ones.
Update 2
Started a bounty to get some more feedback/opinions.
We have had this exact same scenario before. This is a little tricky, depending upon how you will approach it.
1) Delete and Recreate Product Type list through UI
If you delete and recreate the lookup List(Product Type in your case) through UI, then you will lose the connections because the List's id GUID will change upon recreation. So do not go that route.
2) Delete and Recreate Product Type through a Feature
If you had created the Product Type list through a feature.xml file using the <ListInstance> element, then if you delete that list and then recreate it using the same feature (basically Id attribute of ListInstance remains the same, number of list items, i.e. the number of <Row> elements, may change), the association would be maintained. So if you were adding 5 more product types, then if you had created the list using a feature, you could just delete the list and provision the new one using the same feature with extra info for new items and everything would just work!
As a side note, this is the better approach because if you have to do the upgrade on a lot of servers, then rather than doing list export import via stsadm, feature deactivation and activation is a much more recommended solution. This is how we did it.
3)Deleting all list items from Product Type and adding new ones (list is never deleted)
If you are linking the lookup field (in Product List) to the ID field of the lookup list(Product Type), you have to remember that ID is auto-incrementing, so if you delete all items and then add new ones, then their ID's would be different. Say you had 5 items with ID's (ID field is not shown in UI while editing in Datasheet view) 1-5 in the list. If you delete them and add new items, their ID's would start from 6 and not 1 again. So if your lookup field had link to the item with ID 1 in it, then this method is not going to work because there is no item with ID 1 in the Product Type list anymore. So you might want to really try this out before going to production with this method.
4) Editing the list in place
If the list is not extraordinarily huge, and you only have to make this change to one or two instances, could you not just edit the list directly in the datasheet view on the prod server? When editing in datasheet view, do not delete the item, but just overwrite the values of its columns. And you can add more items if you want. This will make sure your ID's are valid.
I have mostly talked about adding new items to the list. Now if you were deleting existing items, then your lookup fields will be affected because assuming you linked the field by ID, the ID is not present anymore since the item has been deleted. Basically, any method you use, maintaining your ID's is critical.
Now regarding your doubts/questions:
I am not too sure about stsadm export import for a list (never done it myself), but stsadm can be tricky as some operations will work on certain scopes only. So you better try out your exact scenario on a dev env.
What happens during an import is tricky again depending on the exact timing. I am sure SP has its own concurrency mechanisms, but you cannot have a definitive answer as it might probably be different based on the stage of the import. If possible, recommended approach is to do the import during a planned downtime.
Regarding changing schema of the list, a change in the schema of a list will not affect the existing list instances (for the most part). If you do this through UI, I believe SP makes changes to the content DB directly. I am not certain how you intend to do this, but if you were to add a column to an existing list using a feature, the way to do this is during feature activation by adding a new content type to the list and adding your new column to this content type. This way you add the column but do not affect the existing list items.
Good luck...
There are two components to a particular lookup: the field, and the field value. The field value only contains the ID of the item(s) it refers to, and the display field. This information is meaningless without the field, which specifies what list to look at and what field to use as the display field.
The primary reason that a Lookup will break occurs on the field scope: either the list it referred to no longer exists, or the list does not contain the required field. These would generally happen if you deleted and recreated the list, but you aren't doing that. If you do break a lookup's list reference, then the only thing you can do is re-create the lookup, because you cannot configure the list reference for a lookup field once it is created.
The downside of your import/export procedure is that you lose the validity of all currently existing lookup values. A lookup maintains its integrity based on the ID of the item it references. So when the display field changes, it still refers to the same item. If you delete the item, then the lookup no longer references it, even if you create a new item that has the same value for the display field. So you would have to reassign all of the products to the new product types.
It should be noted that if you were to revert the deletion of that item, it would return to being on the lookup! The reference to that ID is kept until the actual lookup value is updated (such as by editing the Product).
All of your now invalid references will be null for purposes of interaction. You won't see anything on display forms, and you won't have the options when you try to update the product. When you do update the product, you update it to what you just set it to, which since you can't set the non-existent IDs, means that there are no more references to those IDs.
Any changes to the Product Type list's schema that do not affect the display field specified for the lookup will not have any effect on the lookup integrity. If you do change the display field in any fashion, and of course if you delete it, then it will break in the same fashion as with the list reference. However, you can set the display field, both in the UI and in the object model, so it is easy to fix this.

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