how to access postgresql database view using strongloop - postgresql

Question

Please help in accessing postgresql database view using strongloop.
im able to access table
{"name": "test",
"options": {
"idInjection": false,
"postgresql": {
"schema": "public",
"table": "test_data_v"
}
},
"properties": {
"assetid": {
"type": "String",
"required": false,
"length": 40,
"precision": null,
"scale": null,
"id": 1,
"postgresql": {
"columnName": "asset_id",
"dataType": "character varying",
"dataLength": 40,
"dataPrecision": null,
"dataScale": null,
"nullable": "YES"
}
}
}}
in same way please suggest me how to access view
Thanks
Divya

Answer 1

I am not installed postgresql but I tried in mysql, Its working fine.
IN your model you can do directly see this Example
In database I have created view that is
CREATE VIEW shareviews AS
SELECT id,name
FROM share where id = 1;
In model you can call viewname directly like this example
module.exports = function(Share) {
var server = require('../../server/server');
var ds = server.dataSources.MySQL; // use server.dataSources.postgres;
Share.list = function(optionalparam, cb) {
var sql = 'select * from shareviews';
ds.connector.execute(sql, function(err, data)
{
if(err) return err;
console.log(err);
console.log("data",data);
cb(null, data);
});
}
Share.remoteMethod(
'list',
{
accepts: {arg: 'param', type: 'string'},
returns: {arg: 'result', type: 'object'},
http: {path: '/list', verb: 'get'}
}
);
};
You need to set data source in datasource.json
{
"db": {
"name": "db",
"connector": "memory"
},
"postgres": {
"host": "localhost",
"port": 5432,
"database": "postgres",
"username": "postgres",
"password": "*******",
"name": "postgres",
"connector": "postgresql"
}
}
Then in model-config.json you need to assign data source name to each
model.
That is
{
"_meta": {
"sources": [
"loopback/common/models",
"loopback/server/models",
"../common/models",
"./models"
],
"mixins": [
"loopback/common/mixins",
"loopback/server/mixins",
"../common/mixins",
"./mixins"
]
},
"User": {
"dataSource": "db"
},
"AccessToken": {
"dataSource": "db",
"public": false
},
"ACL": {
"dataSource": "db",
"public": false
},
"RoleMapping": {
"dataSource": "db",
"public": false
},
"Role": {
"dataSource": "db",
"public": false
},
"yourmodelname": {
"dataSource": "postgres",
"public": true
},
"yourmodelname": {
"dataSource": "postgres",
"public": true
}
}
then you can access database in you model.js or Rest call(example localhost:3000/explorer) For Example my
model name Grocerylist
module.exports = function(Grocerylist) {
Grocerylist.beforeRemote('create', function(context, user, next) {
var req = context.req;
req.body.date = Date.now();
req.body.shopperId = req.accessToken.userId;
next();
});
Grocerylist.complete = function(shopperId, cb) {
Grocerylist.find({
where: {
purchased:false,
shopperId: shopperId,
}
}, function(err, list) {
var response;
if (typeof list === 'undefined' || list.length === 0) {
response = "All done shopping!"
}
else {
response = "Shopping is not done.";
}
cb(null, response);
});
};
Grocerylist.remoteMethod(
'complete',
{
accepts: {
arg: 'shopperId', type: 'string'
},
http: {
path: '/complete',
verb: 'get'
},
returns: {
arg: 'complete',
type: 'string'
}
}
);
};