I did a straw bale garden the last 2 years, but will not be doing it this year. I have 2 acres that a former landscaper owned, and he let dwarf bamboo take over the whole area around the greenhouse. It seems impossible to kill so I was covering it with cardboard, weed block, old rugs, etc to be able to build up a raised bed garden, and the strawbale method seemed the easiest at the time so I didn't have to build beds and fill them with dirt.
I built a cattle panel arch for tomatoes and put 4 bales on each of the inside rows and one row of 4 bales on the outside row the first year, and last year just did the 8 inside the arch because I build a concrete block bed on the outside of the arch. My tomatoes and pole beans that I put in the bales did great both years, but last year I had difficulty finding bales and then realized when I got home with them that they were "baled wrong." Meaning that to have the strings off the ground and around the outside of the bale, the straw on top was then long ways instead of the end pieces sticking up. So the tomatoes did great until the bales drooped a few months later and literally pulled away from the plants, taking the roots with them. So if you do this, BE SURE that your straw bales are correct.
This year I've found a company that will deliver me a cubic yard of compost cheaper than I can buy bales or bagged dirt, so I've been mixing the leftover composted straw piles with the new compost in fabric grow bags to use on the arch.
This is when I originally set up the arch in early 2016. It's 3 12' cattle panels with 8 8' t-posts. I'm 5'10" and can walk under it with no problem, and it's about 6 foot wide so plenty of room for bales and a pathway to access everything.
This is probably late May 2017. These are the crappy bales that eventually collapsed, and you can see how grassy they were as well. I added solar torches (3 on each side) to be able to tell how much sun each end was getting. And my husband added a PVC irrigation system for me, which is very helpful when having to condition the bales initially.
Below is probably early July 2017. You can just barely make out the arch on the middle left, (the concrete block bed runs on the outside of it,) but you can see the tomato plants sticking out the top. I have Velcro support tape and just tape the plants to the wire as they grow, so some plants would go all the way across the arch and back to the other side. Then you just walk under the arch and pick what you want.

I'm still expanding the garden this year and cutting/tilling some of the bamboo to make room to plant corn. The area behind the greenhouse is the beehive yard, so I may get a few bales and put over there with pollinator seeds in them since that won't require supports and the bees would appreciate it.