I have created a custom post type called products and need to associate multiple images with one product. The actual data already exists in a different non-wordpress database in a table called productimages that simply has a productid, imageurl, and image title. I need to convert this data into wordpress format so wordpress can display everything I need. This is something that will be done regularly using sql automatically deleting products and meta data related and re-adding from our main database which changes regularly.
From what I can tell, the best way to make this work is to manually use sql to insert the productimages as attachment posts just like wordpress does when you upload media to wordpress. Then to associate the image with a product I have to manually insert records into postmeta but the data in postmeta is serialized or something and I am unsure how I would insert the data in the correct serialize format using mysql. Is it even possible to do this with mysql?
Am I going about this wrong? Should I be doing something different? I was originally going to use custom fields till I realized a custom field can only have one value and I needed two values: imageurl and imagetitle for each image. So it seems programatically creating a post type of attachment for each image is the best way to go. yes?
I look forward to anyone's response to help in this matter.
Not an expert on serialization for wordpress but have you checked the wordpress php function maybe_serialize
Related
I have to migrate a complex TYPO3 v7.6.30 website to Drupal 8.
So far I have investigated how TYPO3's administration part works.
I've also been digging into the TYPO3 database to find the correct mapping pattern, but I just don't seem to be getting anywhere.
My question is if there is a nice way to map/join all of the content with it's images/files/categories, so I can get row by row all page content like:
title
description
text fields
images
documents
tables
...
So in the end I will end up with a joined table with all of the data for each page on a single row, which then I can map in the migration.
I need a smooth way to map the pages with their fields.
I need the same for users (haven't researched this one yet).
The same is for the nesting of the pages in order to recreate the menus in the new CMS.
Any help on this will be highly appreciated.
You need a detailed plan of the configuration and then much understanding how TYPO3 works.
Here a basic introduction:
All content is organized in records and the main table is pages, the pagetree.
For nearly all records you have some common fields:
uid unique identifier
pid page ID (in which 'page' is the record 'stored', important for editing) (even pages are stored in pages to build a page tree)
title name of record
hidden, deleted,starttime,endtime, fe_group for visibility
there are fields for
versioning and workspaces
language support
sorting
some records (especially tt_content) have type fields, which decide how the record and which fields of it are used
there are relations to files (which are represented by sys_file records, and other records like file metadata or categories).
Aside from the default content elments where the data is stored in the tt_content record itself you can have plugins which display other records, (e.g. news, addresses, events, ...) or which get their data from another application or server.
You need to understand the complete configuration to save all.
What you might need is a special rendering of the pages.
That is doable with TYPO3: aside from the default HTML-rendering you can define other page types where you can get the content in any kind you define. e.g. xml, json, CSV, ...
This needs detailed knowledge of the individual TYPO3 configuration. So nobody can give you a full detailed picture of your installation.
And of course you need a good knowledge of your drupal target installation to answer the question 'what information should be stored where?'
I've been trying to get my head around NoSQL, and I do see the benefits to embedding data in documents.
What I can't understand, and hope someone can clear up, is how to store data if it must be relational.
For example.
I have many users. They are all buying a product. So everytime that they buy a product, we add it under the users document in mongo, so its embedded and its all great.
The problem I have is when something in reference to that product changes.
Lets say user A buys a car called "Porsche". Then, we add a reference to that under the users profile. However, in a strange turn of events Porsche gets purchased by Ferrari.
What do you do now, update each and every record and change to name from Porsche to Ferrari?
Typically in SQL, we would create 3 tables. One for users, one for Cars (description, model etc) & one for mapping users to purchases.
Do you do the same thing for Mongo? It seems like if you go down this route, you are trying to make Mongo do things SQL way, which is not what its intended for.
I can understand how certain data is great for embedding (addresses, contact details, comments, etc) but what happens when you need to reference data that can and needs to change at a regular basis?
I hope this question is clear
DBRefs/Manual References were made specifically to solve this issue. Instead of manually adding the data to each document and then needing to update when something changes, you can store a reference to another collection. Here is the mongoDB documentation for details.
References in Mongo
Then all you would need to do is update the reference collection and the change would be reflected in all downstream locations.
When i used the mongoose library for node js it actually creates 3 tables similar to how you might do it in SQL, you can use object id's as foreign keys and enrich them either on the client side or on the backend, still no joining but you could do an 'in' query for the ID's then enrich the objects that way, mongoose can do this automatically by 'populating'
So I am looking at creating a very small app for the town I live in, I would like to offer people the ability to log into a website and create a business listing that would have things like (name, address, phone, opening hrs, logo -image).
I have limited knowledge in sql and creating Databases but am able to with abit of reading and time.. However I would like to know the best approach for storing images.
I am planning on just uploading the image to the webspace and then having a URL link stored in the DB... But not really sure if this is the best option?
So my question first of all, is this the best way to go about it? secondly how could I achieve this?
You've got everything right.
Yes, go for the plain table in the database, contains all the required fields.
Upon inserting another company data, get the autoincremented id, extract logo's filename extension and move uploaded file into a file called "$id.$ext" and you're all set.
How to achieve it - just try some online manuals.
There are plenty on working with database, while handling files is better to learn from the man page http://php.net/manual/en/features.file-upload.post-method.php
I have a custom list with a text field that set to append changes to the field. This uses versioning. The problem I have is that existing entries have been duplicated in versions. I'd like to go and clean up these programatically, but I don't see a way to pull this. The client object model gives me access to the list item, but there are no methods that I see there to even read past versions, let alone edit them. Or is this something that can only be done server side? Thanks for the help!
I got the answer I was looking for at How to delete versions without having column name in sharepoint list - It looks like it is not possible through the client model, only server side.
We have a CMS built entirely in house. I'm the new web developer guy with literally 4 weeks of ColdFusion Experience. What I want to do is add version control to our dynamic pages. Something like what Wordpress does. When you modify a page in Wordpress it makes some database entires and keeps a copy of each page when you save it. So if you create a page and modifiy it 6 times, all in one day you have 7 different versions to roll back if necessary. Is there a easy way to do something similar in Coldfusion?
Please note I'm not talking about source control or version control of actual CFM files, all pages are done on the backend dynamically using SQL.
sure you can. just stash the page content in another database table. you can do that with ColdFusion or via a trigger in the database.
One way (there are many) to do this is to add a column called "version" and a column called "live" in the table where you're storing all of your cms pages.
The column called live is option but might make it easier for your in some ways when starting out.
The column "version" will tell you what revision number of a document in the CMS you have. By a process of elimination you could say the newest one (highest version #) would be the latest and live one. However, you may need to override this some time and turn an old page live, which is what the "live" setting can be set to.
So when you click "edit" on a page, you would take that version that was clicked, and copy it into a new higher version number. It stays as a draft until you click publish (at which time it's written as 'live')..
I hope that helps. This kind of an approach should work okay with most schema designs but I can't say for sure either without seeing it.
Jas' solution works well if most of the changes are to one field, for example the full text of a page of content.
However, if you have many fields, and people only tend to change one or two at a time, a new entry in to the table for each version can quickly get out of hand, with many almost identical versions in the history.
In this case what i like to do is store the changes on a per field basis in a table ChangeHistory. I include the table name, row ID, field name, previous value, new value, and who made the change and when.
This acts as a complete change history for any field in any table. I'm also able to view changes by record, by user, or by field.
For realtime page generation from the database, your best bet are "live" and "versioned" tables. Reason being keeping all data, live and versioned, in one table will negatively impact performance. So if page generation relies on a single SELECT query from the live table you can easily version the result set using ColdFusion's Web Distributed Data eXchange format (wddx) via the tag <cfwddx>. WDDX is a serialized data format that works particularly well with ColdFusion data (sorta like Python's pickle, albeit without the ability to deal with objects).
The versioned table could be as such:
PageID
Created
Data
Where data is the column storing the WDDX.
Note, you could also use built-in JSON support as well for version serialization (serializeJSON & deserializeJSON), but cfwddx tends to be more stable.