Well, source-code is the best documentation:
(defn category []
((model/create :model {:name "category"
:fields [{:name "Label" :type "string"}]})
(let [category-model-id (model/models :category :id)]
(model/update :model category-model-id {:name "category"
:fields [{:name "parent-category"
:type "part"
:target-id prod-model-id
:reciprocal-name
"sub-categories"}]}))))
Documentation of caribou.model/create and caribou.model/update describes it
all!
Have a nice day!
Am Dienstag, 4. Februar 2014 10:11:06 UTC+1 schrieb David Baldin:
>
> Hey!
>
> i hope this is the right place to ask this question! Here it goes: I want
> to create a simple model with cariou that references itself to generate a
> tree-structure. Like this:
>
> (defn category []
> (model/create :model {:name "category"
> :fields [{:name "Label" :type "string"}
> {:name "related-categories" :type "link"
> :target-id (model/models :category :id)
> :reciprocal-name
> "relating-categories"}]}))
>
> This results in a:
>
> DEBUG :db insert into field values dependent = false, slug =
> 'relating-categories', position = 201, map = false, localized = false, name
> = 'relating-categories', locked = false, model-id = '', target-id = 22,
> uuid = '13776b59-7359-4412-850f-ffaa619665e0', type = 'link', updated-at =
> '2014-02-04 09:53:48.578', model-position = 201, link-id = 380,
> status-position = 139
> Exception in thread "main" org.h2.jdbc.JdbcSQLException: NULL not allowed
> for column "MODEL_ID"; SQL statement:
> INSERT INTO field
> (dependent,slug,position,map,localized,name,locked,model_id,target_id,uuid,type,updated_at,model_position,link_id,status_position)
>
> VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?) [23502-170]
> at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
> at org.h2.message.DbException.get(DbException.java:169)
> at org.h2.message.DbException.get(DbException.java:146)
> at org.h2.table.Column.validateConvertUpdateSequence(Column.java:293)...
>
> Because the category to be reference is not yet available. Is there a way
> to create a model and afterwards update it with constraints (Like you would
> do in SQL)!?
>
> Btw. naturally the other way around will dont work either:
>
> (defn category []
> (model/create :model {:name "category"
> :fields [{:name "Label" :type "string"}
> {:name "keywords" :type "string"}
> {:name "parent-category" :type "part"
> :target-id (model/models :category :id)
> :reciprocal-name "child-categories"}]}))
>
> And the bidirectional (or in caribou-speech: "reciprocal") also not:
>
> (defn category []
> (model/create :model {:name "category"
> :fields [{:name "Label" :type "string"}
> {:name "keywords" :type "string"}
> {:name "parent-category" :type "link"
> :target-id (model/models :category
> :id)}]}))
>
> Any hints? Btw. Caribou is really pragmatic, fast and clean, love it!
> NoSQL/Riak support would awesome too!
>
> Thanks and regards,
> David
>
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