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Main => Technical Support => Topic started by: Victor118 on December 17, 2018, 09:13:17 am

Title: Bitshares JS market trade history
Post by: Victor118 on December 17, 2018, 09:13:17 am

Hi,
I would like to retrieve market history.
I'm trying with  :

Code: [Select]

Apis.instance().db_api().exec( "get_trade_history", [ base,quote,dateStart,dateEnd, 100 ] );
But i got an error :

Quote

basic_string::at: __n (which is 0) >= this->size() (which is 0): basic_string::at: __n (which is 0) >= this->size() (which is 0): unable to convert ISO-formatted string to fc::time_point_sec

Here is dateStart and dateEnd format :

Quote

2018-11-17 10:02:43
 2018-12-17 10:02:43

Someone can help me please ?

 Is there a better way to get history price for a chart, may be an OHLC format ?

Title: Re: Bitshares JS market trade history
Post by: xeroc on December 17, 2018, 02:10:55 pm

Try this format:

2018-12-17T15:00:00

note that **T** in the middle

Title: Re: Bitshares JS market trade history
Post by: Victor118 on December 17, 2018, 02:31:37 pm

Great, it works, thank you.

But I don't know why I have an empty array as result for :

Code: [Select]

Apis.instance().db_api().exec( "get_trade_history", [ "BTS","USD","2018-12-16T15:09:11","2018-12-17T15:09:11",100 ] );


Title: Re: Bitshares JS market trade history
Post by: xeroc on December 17, 2018, 04:14:36 pm

This is a query that returns a result for me:

{"method": "call", "params": [0, "get_trade_history", ["BTS", "USD", "2018-12-17T16:13:49", "2018-12-16T16:13:49", 10]], "jsonrpc": "2.0", "id": 3}

It requires the market_plugin to be enabled on the backend. Try against "wss://node.bitshares.eu"

Title: Re: Bitshares JS market trade history
Post by: Victor118 on December 18, 2018, 11:13:13 am

Ok I just found why I had an empty array, it seems that params order is dateEnd then dateStart like you did.
But the documentation of bitsharesjs-ws is :
https://github.com/bitshares/bitsharesjs-ws

Quote

get_trade_history   [string base, string quote, date start, date stop, int limit]

Thanks

Title: Re: Bitshares JS market trade history
Post by: Digital Lucifer on December 23, 2018, 07:46:00 am

Quote from: Victor118 on December 18, 2018, 11:13:13 am

Ok I just found why I had an empty array, it seems that params order is dateEnd then dateStart like you did.
But the documentation of bitsharesjs-ws is :
https://github.com/bitshares/bitsharesjs-ws

Quote

get_trade_history   [string base, string quote, date start, date stop, int limit]

Thanks

Keep in mind that repo and documentation is few months out-of-date :)))