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I’m working through Chris Anderson’s Couchdb Definitive Guide. I thought I would expand a little on the content of chapter 6.
The chapter starts with 3 documents: “biking”, “bought-a-cat”, “hello-world”.
First, I had to create the database:
curl -X PUT http://127.0.0.1:5984/basic
Then I copied and pasted document content from the guide into 3 .json documents (eg1.json, eg2.json, eg3.json) that I PUT to the database. The content of the “biking” document looks like this.
{
"title":"Biking",
"body":"My biggest hobby is mountainbiking. The other day...",
"date":"2009/01/30 18:04:11"
}
I asked couchdb for a UUID:
curl -X GET http://127.0.0.1:5984/_uuids
And received a new UUID as .json
{"uuids":["381795b3958bbdd47f1879e8ff000e84"]}
This allowed me to construct a PUT for each egX.json as follows (a new UUID was needed for each document):
curl -X PUT http://127.0.0.1:5984/basic/bd26423be3847a6b7b14e50f36048563 \ -d @egX.json -H 'Content-Type: application/json'
Or, you can let couchdb assign the UUID by using POST:
curl -X POST http://127.0.0.1:5984/basic -d @./CouchApps/egX.json \ -H 'Content-Type: application/json'
Next came the _design/example document. I initially saved a version 1 and then updated to a version 2 _design/example document. This is version 1:
{
"_id" : "_design/example",
"views" : {
"foo" : {
"map" : "function(doc){ emit(doc._id, doc._rev)}"
}
}
}
This was PUT to the database:
curl -X PUT http://127.0.0.1:5984/basic/_design/example --data-binary @mydesign.json
Couchdb automatically assigns a revision number to the document that appears within the .json.
And the function foo can be called using:
curl -X GET http://127.0.0.1:5984/basic/_design/example/_view/foo
The next step was to update _design/example with a new function called bar. The revision number of _design/example was needed:
curl -X GET http://127.0.0.1:5984/basic/_design/example
And this was entered into the _design/example document
{
"_id" : "_design/example",
"_rev" : "1-230141dfa7e07c3dbfef0789bf11773a",
"views" : {
"foo" : {
"map" : "function(doc){ emit(doc._id, doc._rev)}"
},
"bar" : {
"map" : "function(doc) {if(doc.date && doc.title){emit(doc.date, doc.title);}}"
}
}
}
_design/example was then updated
curl -vX PUT http://127.0.0.1:5984/basic/_design/example \ -d @./CouchApps/mydesign.json -H 'Content-Type: application/json'
In this example I have used the -d switch, which I think is synonymous with –data-binary, but if an error gets thrown, use –data-binary. The Content-Type is also required.
Call the bar function like foo before:
curl -X GET http://127.0.0.1:5984/basic/_design/example/_view/bar
Euroside 