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(MODX)EvolutionCMS.snippets.ddStash

Save data as JSON or Query string, then extend if needed and use it later without database queries.

Requires

• PHP >= 5.6
• (MODX)EvolutionCMS >= 1.1
• (MODX)EvolutionCMS.libraries.ddTools >= 0.49.1

Documentation

Installation

Manually

1. Elements → Snippets: Create a new snippet with the following data

1. Snippet name: ddStash.
2. Description: <b>1.3</b> Save data as JSON or QueryString, then extend if needed and use it later without database queries..
3. Category: Core.
4. Parse DocBlock: no.
5. Snippet code (php): Insert content of the ddStash_snippet.php file from the archive.

2. Elements → Manage Files

1. Create a new folder assets/snippets/ddStash/.
2. Extract the archive to the folder (except ddStash_snippet.php).

Using (MODX)EvolutionCMS.libraries.ddInstaller

Just run the following PHP code in your sources or Console:

• If ddStash is not exist on your site, ddInstaller will just install it.
• If ddStash is already exist on your site, ddInstaller will check it version and update it if needed.

Parameters description

• save

  • Desctription: Data to save in stash. Nested objects are supported too, see examples below.
  • Valid values:
    • stringJsonObject — as JSON
    • stringHjsonObject — as HJSON
    • stringQueryFormated — as Query string
    • It can also be set as a native PHP object or array (e. g. for calls through $modx->runSnippet):
      • arrayAssociative
      • object
  • Default value: —

• save_extendExisting

  • Desctription: Extend an existing object instead of overwriting it.
  • Valid values:
    • 0
    • 1
  • Default value: 0

• save_extendExistingWithEmpty

  • Desctription: Overwrite fields with empty values (see examples below).
    The following values are considered to be empty:
    • "" — an empty string
    • [] — an empty array
    • {} — an empty object
    • null
  • Valid values:
    • 0
    • 1
  • Default value: 1

• get

  • Desctription: Data key for getting from stash.
  • Valid values: string
  • Default value: —

• get_tpl

  • Desctription: Output template.

    Available placeholders:

    • [+snippetResult+] — data from stash
  • Valid values:
    • stringChunkName
    • string — use inline templates starting with @CODE:
  • Default value: '@CODE:[+snippetResult+]'
• storage
  • Desctription: Data storage.
  • Valid values:
    • 'post' — $_POST
    • 'session' — $_SESSION
  • Default value: 'post'

Examples

Save some data

Get saved data

You can get field value in any depth

Returns someValue.

Returns John.

Returns Alice.

Also you can get objects in JSON

If field value is object or array, it will be returned in JSON format.

Get first John child

Returns:

Get all John children:

Returns:

Get all data about John

Returns:

Save: Extend an existing object instead of overwriting it (&save_extendExisting=`1`)

First you save some object:

Then if you just save object with the same key (userData):

The snippet will overwrite previous saved object completely:

Returns:

So, if you want to extend the first object just use the save_extendExisting parameter:

In this case the snippet will recursive extend the first object with the data from the second:

Returns:

Save: Extend without overwriting fields with empty values (&save_extendExistingWithEmpty=`0`)

By default, empty field values (e. g. '') are treated as other values and will replace non-empty ones.

Returns:

Empty lastName from the second object replaced non-empty lastName from the first.

If you want to ignore empty values, just use save_extendExistingWithEmpty == 0:

Returns:

Run the snippet through \DDTools\Snippet::runSnippet without DB and eval

Links

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